From 9c071493c5b8946f954111b6cfeecb57b646a71d Mon Sep 17 00:00:00 2001 From: light7734 Date: Sun, 20 Jul 2025 05:20:43 +0330 Subject: [PATCH] refactor: imgui as conan module instead of git submodule --- .gitmodules | 4 - CMakeLists.txt | 4 +- conanfile.py | 1 + external/CMakeLists.txt | 52 - external/imgui | 1 - modules/input/CMakeLists.txt | 2 +- .../mirror/private/panels/asset_browser.cpp | 32 +- modules/mirror/private/panels/properties.cpp | 4 +- modules/ui/CMakeLists.txt | 2 +- modules/ui/private/gl/backend.cpp | 1077 ++++++++++++ modules/ui/private/gl/backend.hpp | 70 + modules/ui/private/gl/loader.hpp | 923 ++++++++++ modules/ui/private/gl/ui.cpp | 4 +- modules/ui/private/glfw/glfw.cpp | 1547 +++++++++++++++++ modules/ui/private/glfw/glfw.h | 74 + modules/ui/private/ui.cpp | 2 +- tools/ci/images/leak_sanitizer/Dockerfile | 9 +- tools/cmake/dependencies.cmake | 9 + 18 files changed, 3722 insertions(+), 95 deletions(-) delete mode 100644 external/CMakeLists.txt delete mode 160000 external/imgui create mode 100644 modules/ui/private/gl/backend.cpp create mode 100644 modules/ui/private/gl/backend.hpp create mode 100644 modules/ui/private/gl/loader.hpp create mode 100644 modules/ui/private/glfw/glfw.cpp create mode 100644 modules/ui/private/glfw/glfw.h diff --git a/.gitmodules b/.gitmodules index 3d9f11c..e69de29 100644 --- a/.gitmodules +++ b/.gitmodules @@ -1,4 +0,0 @@ -[submodule "external/imgui"] - path = external/imgui - url = https://github.com/ocornut/imgui - branch = docking diff --git a/CMakeLists.txt b/CMakeLists.txt index 0520205..1a88bf5 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -12,5 +12,5 @@ if (ENABLE_STATIC_ANALYSIS) endif () add_option(ENABLE_TESTS "Enables the building of the test modules") -add_subdirectory(./modules) -add_subdirectory(./external) +add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/modules) +add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/external/glad) diff --git a/conanfile.py b/conanfile.py index f1d04ba..47348bc 100644 --- a/conanfile.py +++ b/conanfile.py @@ -25,6 +25,7 @@ class LightRecipe(ConanFile): } def requirements(self): + self.requires("imgui/1.92.0-docking") self.requires("entt/3.15.0") self.requires("glfw/3.4") self.requires("stb/cci.20240531") diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt deleted file mode 100644 index 8494433..0000000 --- a/external/CMakeLists.txt +++ /dev/null @@ -1,52 +0,0 @@ -# GLAD # -add_subdirectory(./glad) - -set(MIRROR_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../modules/mirror/) -set(DEPENDENCIES_DIR ${CMAKE_CURRENT_SOURCE_DIR}/) - -if (CMAKE_COMPILER_IS_GNUCC) - add_compile_options(-w) -endif() -if(MSVC) - add_compile_options(/MP) - add_compile_options(/W0) -endif() - -file(GLOB IMGUI_FILES true ABSOLUTE - ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui.cpp - ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_tables.cpp - ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_widgets.cpp - ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_draw.cpp - ${CMAKE_CURRENT_SOURCE_DIR}/imgui/imgui_demo.cpp -) - -set(BACKENDS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/imgui/backends/) - - -file(GLOB IMGUI_BACKEND_FILES true ABSOLUTE - ${BACKENDS_DIR}imgui_impl_opengl3.cpp - ${BACKENDS_DIR}imgui_impl_glfw.cpp - # ${BACKENDS_DIR}imgui_impl_vulkan.cpp ${BACKENDS_DIR}imgui_impl_vulkan.h -) - -if(WIN32) - file(GLOB IMGUI_WINDOWS_BACKEND_FILES true ABSOLUTE ${CMAKE_CURRENT_SOURCE_DIR}/backends/ - ${BACKENDS_DIR}imgui_impl_dx11.cpp - ${BACKENDS_DIR}imgui_impl_win32.cpp -) - - list(APPEND IMGUI_BACKEND_FILES ${IMGUI_WINDOWS_BACKEND_FILES}) -endif() - -add_compile_definitions(IMGUI_IMPL_OPENGL_LOADER_GLAD) -include_directories(${DEPENDENCIES_DIR}GLFW/include) - -add_library(imgui STATIC ${IMGUI_FILES} ${IMGUI_BACKEND_FILES}) - -target_include_directories(imgui PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/imgui) -target_link_libraries( - imgui - PUBLIC glad - PUBLIC opengl::opengl - PUBLIC glfw -) diff --git a/external/imgui b/external/imgui deleted file mode 160000 index 250333d..0000000 --- a/external/imgui +++ /dev/null @@ -1 +0,0 @@ -Subproject commit 250333d895b1067533533dcfab137512745b9689 diff --git a/modules/input/CMakeLists.txt b/modules/input/CMakeLists.txt index dbf7a96..992fb84 100644 --- a/modules/input/CMakeLists.txt +++ b/modules/input/CMakeLists.txt @@ -1,2 +1,2 @@ add_library_module(input input.cpp) -target_link_libraries(input PUBLIC math imgui logger) +target_link_libraries(input PUBLIC math imgui::imgui logger) diff --git a/modules/mirror/private/panels/asset_browser.cpp b/modules/mirror/private/panels/asset_browser.cpp index a59fc8b..cd04799 100644 --- a/modules/mirror/private/panels/asset_browser.cpp +++ b/modules/mirror/private/panels/asset_browser.cpp @@ -89,13 +89,9 @@ void AssetBrowserPanel::on_user_interface_update() // Directory case AssetType::directory: if (ImGui::ImageButton( + path.c_str(), m_directory_texture->get_texture(), - ImVec2(m_file_size, m_file_size), - ImVec2 { 0.0f, 0.0f }, - ImVec2 { 1.0f, 1.0f }, - 0, - ImVec4 { 0.0f, 0.0f, 0.0f, 0.0f }, - ImVec4 { 1.0f, 1.0f, 1.0f, 1.0f } + ImVec2(m_file_size, m_file_size) )) { m_current_directory /= path.filename(); @@ -105,13 +101,9 @@ void AssetBrowserPanel::on_user_interface_update() // Scene case AssetType::scene: if (ImGui::ImageButton( + path.c_str(), m_scene_texture->get_texture(), - ImVec2(m_file_size, m_file_size), - ImVec2 { 0.0f, 0.0f }, - ImVec2 { 1.0f, 1.0f }, - 0, - ImVec4 { 0.0f, 0.0f, 0.0f, 0.0f }, - ImVec4 { 1.0f, 1.0f, 1.0f, 1.0f } + ImVec2(m_file_size, m_file_size) )) { auto serializer = SceneSerializer { m_active_scene }; @@ -123,13 +115,9 @@ void AssetBrowserPanel::on_user_interface_update() // Image case AssetType::image: if (ImGui::ImageButton( + path.c_str(), m_image_texture->get_texture(), - ImVec2(m_file_size, m_file_size), - ImVec2 { 0.0f, 0.0f }, - ImVec2 { 1.0f, 1.0f }, - 0, - ImVec4 { 0.0f, 0.0f, 0.0f, 0.0f }, - ImVec4 { 1.0f, 1.0f, 1.0f, 1.0f } + ImVec2(m_file_size, m_file_size) )) { } @@ -138,13 +126,9 @@ void AssetBrowserPanel::on_user_interface_update() // Text case AssetType::text: if (ImGui::ImageButton( + path.c_str(), m_text_texture->get_texture(), - ImVec2(m_file_size, m_file_size), - ImVec2 { 0.0f, 0.0f }, - ImVec2 { 1.0f, 1.0f }, - 0, - ImVec4 { 0.0f, 0.0f, 0.0f, 0.0f }, - ImVec4 { 1.0f, 1.0f, 1.0f, 1.0f } + ImVec2(m_file_size, m_file_size) )) { } diff --git a/modules/mirror/private/panels/properties.cpp b/modules/mirror/private/panels/properties.cpp index 9e29837..8fd0902 100644 --- a/modules/mirror/private/panels/properties.cpp +++ b/modules/mirror/private/panels/properties.cpp @@ -198,7 +198,7 @@ void PropertiesPanel::draw_vec3_control( ImGui::PushMultiItemsWidths(3, ImGui::CalcItemWidth()); ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2 { 0, 0 }); - auto line_height = GImGui->Font->FontSize + GImGui->Style.FramePadding.y * 2.0f; + auto line_height = GImGui->Font->LegacySize + GImGui->Style.FramePadding.y * 2.0f; auto button_size = ImVec2 { line_height + 3.0f, line_height }; ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.8f, 0.1f, 0.15f, 1.0f)); @@ -276,7 +276,7 @@ void PropertiesPanel::draw_component( | ImGuiTreeNodeFlags_FramePadding; ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, { 4, 4 }); - auto lineHeight = GImGui->Font->FontSize + GImGui->Style.FramePadding.y * 2.0f; + auto lineHeight = GImGui->Font->LegacySize + GImGui->Style.FramePadding.y * 2.0f; ImGui::Separator(); // NOLINTNEXTLINE diff --git a/modules/ui/CMakeLists.txt b/modules/ui/CMakeLists.txt index 5108325..a4de64c 100644 --- a/modules/ui/CMakeLists.txt +++ b/modules/ui/CMakeLists.txt @@ -1,2 +1,2 @@ -add_library_module(ui ui.cpp gl/ui.cpp) +add_library_module(ui ui.cpp gl/ui.cpp gl/backend.cpp glfw/glfw.cpp) target_link_libraries(ui PUBLIC imgui renderer logger lt_debug) diff --git a/modules/ui/private/gl/backend.cpp b/modules/ui/private/gl/backend.cpp new file mode 100644 index 0000000..0f5c4f0 --- /dev/null +++ b/modules/ui/private/gl/backend.cpp @@ -0,0 +1,1077 @@ +// clang-format off +// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline +// - Desktop GL: 2.x 3.x 4.x +// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0) +// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..) + +// Implemented features: +// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! +// [x] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset) [Desktop OpenGL only!] +// [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures). +// [X] Renderer: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'. + +// About WebGL/ES: +// - You need to '#define IMGUI_IMPL_OPENGL_ES2' or '#define IMGUI_IMPL_OPENGL_ES3' to use WebGL or OpenGL ES. +// - This is done automatically on iOS, Android and Emscripten targets. +// - For other targets, the define needs to be visible from the imgui_impl_opengl3.cpp compilation unit. If unsure, define globally or in imconfig.h. + +// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. +// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need. +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2025-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface. +// 2025-06-11: OpenGL: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplOpenGL3_CreateFontsTexture() and ImGui_ImplOpenGL3_DestroyFontsTexture(). +// 2025-06-04: OpenGL: Made GLES 3.20 contexts not access GL_CONTEXT_PROFILE_MASK nor GL_PRIMITIVE_RESTART. (#8664) +// 2025-02-18: OpenGL: Lazily reinitialize embedded GL loader for when calling backend from e.g. other DLL boundaries. (#8406) +// 2024-10-07: OpenGL: Changed default texture sampler to Clamp instead of Repeat/Wrap. +// 2024-06-28: OpenGL: ImGui_ImplOpenGL3_NewFrame() recreates font texture if it has been destroyed by ImGui_ImplOpenGL3_DestroyFontsTexture(). (#7748) +// 2024-05-07: OpenGL: Update loader for Linux to support EGL/GLVND. (#7562) +// 2024-04-16: OpenGL: Detect ES3 contexts on desktop based on version string, to e.g. avoid calling glPolygonMode() on them. (#7447) +// 2024-01-09: OpenGL: Update GL3W based imgui_impl_opengl3_loader.h to load "libGL.so" and variants, fixing regression on distros missing a symlink. +// 2023-11-08: OpenGL: Update GL3W based imgui_impl_opengl3_loader.h to load "libGL.so" instead of "libGL.so.1", accommodating for NetBSD systems having only "libGL.so.3" available. (#6983) +// 2023-10-05: OpenGL: Rename symbols in our internal loader so that LTO compilation with another copy of gl3w is possible. (#6875, #6668, #4445) +// 2023-06-20: OpenGL: Fixed erroneous use glGetIntegerv(GL_CONTEXT_PROFILE_MASK) on contexts lower than 3.2. (#6539, #6333) +// 2023-05-09: OpenGL: Support for glBindSampler() backup/restore on ES3. (#6375) +// 2023-04-18: OpenGL: Restore front and back polygon mode separately when supported by context. (#6333) +// 2023-03-23: OpenGL: Properly restoring "no shader program bound" if it was the case prior to running the rendering function. (#6267, #6220, #6224) +// 2023-03-15: OpenGL: Fixed GL loader crash when GL_VERSION returns NULL. (#6154, #4445, #3530) +// 2023-03-06: OpenGL: Fixed restoration of a potentially deleted OpenGL program, by calling glIsProgram(). (#6220, #6224) +// 2022-11-09: OpenGL: Reverted use of glBufferSubData(), too many corruptions issues + old issues seemingly can't be reproed with Intel drivers nowadays (revert 2021-12-15 and 2022-05-23 changes). +// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11. +// 2022-09-27: OpenGL: Added ability to '#define IMGUI_IMPL_OPENGL_DEBUG'. +// 2022-05-23: OpenGL: Reworking 2021-12-15 "Using buffer orphaning" so it only happens on Intel GPU, seems to cause problems otherwise. (#4468, #4825, #4832, #5127). +// 2022-05-13: OpenGL: Fixed state corruption on OpenGL ES 2.0 due to not preserving GL_ELEMENT_ARRAY_BUFFER_BINDING and vertex attribute states. +// 2021-12-15: OpenGL: Using buffer orphaning + glBufferSubData(), seems to fix leaks with multi-viewports with some Intel HD drivers. +// 2021-08-23: OpenGL: Fixed ES 3.0 shader ("#version 300 es") use normal precision floats to avoid wobbly rendering at HD resolutions. +// 2021-08-19: OpenGL: Embed and use our own minimal GL loader (imgui_impl_opengl3_loader.h), removing requirement and support for third-party loader. +// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). +// 2021-06-25: OpenGL: Use OES_vertex_array extension on Emscripten + backup/restore current state. +// 2021-06-21: OpenGL: Destroy individual vertex/fragment shader objects right after they are linked into the main shader. +// 2021-05-24: OpenGL: Access GL_CLIP_ORIGIN when "GL_ARB_clip_control" extension is detected, inside of just OpenGL 4.5 version. +// 2021-05-19: OpenGL: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement) +// 2021-04-06: OpenGL: Don't try to read GL_CLIP_ORIGIN unless we're OpenGL 4.5 or greater. +// 2021-02-18: OpenGL: Change blending equation to preserve alpha in output buffer. +// 2021-01-03: OpenGL: Backup, setup and restore GL_STENCIL_TEST state. +// 2020-10-23: OpenGL: Backup, setup and restore GL_PRIMITIVE_RESTART state. +// 2020-10-15: OpenGL: Use glGetString(GL_VERSION) instead of glGetIntegerv(GL_MAJOR_VERSION, ...) when the later returns zero (e.g. Desktop GL 2.x) +// 2020-09-17: OpenGL: Fix to avoid compiling/calling glBindSampler() on ES or pre-3.3 context which have the defines set by a loader. +// 2020-07-10: OpenGL: Added support for glad2 OpenGL loader. +// 2020-05-08: OpenGL: Made default GLSL version 150 (instead of 130) on OSX. +// 2020-04-21: OpenGL: Fixed handling of glClipControl(GL_UPPER_LEFT) by inverting projection matrix. +// 2020-04-12: OpenGL: Fixed context version check mistakenly testing for 4.0+ instead of 3.2+ to enable ImGuiBackendFlags_RendererHasVtxOffset. +// 2020-03-24: OpenGL: Added support for glbinding 2.x OpenGL loader. +// 2020-01-07: OpenGL: Added support for glbinding 3.x OpenGL loader. +// 2019-10-25: OpenGL: Using a combination of GL define and runtime GL version to decide whether to use glDrawElementsBaseVertex(). Fix building with pre-3.2 GL loaders. +// 2019-09-22: OpenGL: Detect default GL loader using __has_include compiler facility. +// 2019-09-16: OpenGL: Tweak initialization code to allow application calling ImGui_ImplOpenGL3_CreateFontsTexture() before the first NewFrame() call. +// 2019-05-29: OpenGL: Desktop GL only: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag. +// 2019-04-30: OpenGL: Added support for special ImDrawCallback_ResetRenderState callback to reset render state. +// 2019-03-29: OpenGL: Not calling glBindBuffer more than necessary in the render loop. +// 2019-03-15: OpenGL: Added a GL call + comments in ImGui_ImplOpenGL3_Init() to detect uninitialized GL function loaders early. +// 2019-03-03: OpenGL: Fix support for ES 2.0 (WebGL 1.0). +// 2019-02-20: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN even if defined by the headers/loader. +// 2019-02-11: OpenGL: Projecting clipping rectangles correctly using draw_data->FramebufferScale to allow multi-viewports for retina display. +// 2019-02-01: OpenGL: Using GLSL 410 shaders for any version over 410 (e.g. 430, 450). +// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window. +// 2018-11-13: OpenGL: Support for GL 4.5's glClipControl(GL_UPPER_LEFT) / GL_CLIP_ORIGIN. +// 2018-08-29: OpenGL: Added support for more OpenGL loaders: glew and glad, with comments indicative that any loader can be used. +// 2018-08-09: OpenGL: Default to OpenGL ES 3 on iOS and Android. GLSL version default to "#version 300 ES". +// 2018-07-30: OpenGL: Support for GLSL 300 ES and 410 core. Fixes for Emscripten compilation. +// 2018-07-10: OpenGL: Support for more GLSL versions (based on the GLSL version string). Added error output when shaders fail to compile/link. +// 2018-06-08: Misc: Extracted imgui_impl_opengl3.cpp/.h away from the old combined GLFW/SDL+OpenGL3 examples. +// 2018-06-08: OpenGL: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle. +// 2018-05-25: OpenGL: Removed unnecessary backup/restore of GL_ELEMENT_ARRAY_BUFFER_BINDING since this is part of the VAO state. +// 2018-05-14: OpenGL: Making the call to glBindSampler() optional so 3.2 context won't fail if the function is a nullptr pointer. +// 2018-03-06: OpenGL: Added const char* glsl_version parameter to ImGui_ImplOpenGL3_Init() so user can override the GLSL version e.g. "#version 150". +// 2018-02-23: OpenGL: Create the VAO in the render function so the setup can more easily be used with multiple shared GL context. +// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplSdlGL3_RenderDrawData() in the .h file so you can call it yourself. +// 2018-01-07: OpenGL: Changed GLSL shader version from 330 to 150. +// 2017-09-01: OpenGL: Save and restore current bound sampler. Save and restore current polygon mode. +// 2017-05-01: OpenGL: Fixed save and restore of current blend func state. +// 2017-05-01: OpenGL: Fixed save and restore of current GL_ACTIVE_TEXTURE. +// 2016-09-05: OpenGL: Fixed save and restore of current scissor rectangle. +// 2016-07-29: OpenGL: Explicitly setting GL_UNPACK_ROW_LENGTH to reduce issues because SDL changes it. (#752) + +//---------------------------------------- +// OpenGL GLSL GLSL +// version version string +//---------------------------------------- +// 2.0 110 "#version 110" +// 2.1 120 "#version 120" +// 3.0 130 "#version 130" +// 3.1 140 "#version 140" +// 3.2 150 "#version 150" +// 3.3 330 "#version 330 core" +// 4.0 400 "#version 400 core" +// 4.1 410 "#version 410 core" +// 4.2 420 "#version 410 core" +// 4.3 430 "#version 430 core" +// ES 2.0 100 "#version 100" = WebGL 1.0 +// ES 3.0 300 "#version 300 es" = WebGL 2.0 +//---------------------------------------- + +#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS) +#define _CRT_SECURE_NO_WARNINGS +#endif + +#include "imgui.h" +#ifndef IMGUI_DISABLE +#include "ui/gl/backend.hpp" +#include +#include // intptr_t +#if defined(__APPLE__) +#include +#endif + +// Clang/GCC warnings with -Weverything +#if defined(__clang__) +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: ignore unknown flags +#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast +#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness +#pragma clang diagnostic ignored "-Wunused-macros" // warning: macro is not used +#pragma clang diagnostic ignored "-Wnonportable-system-include-path" +#pragma clang diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types (for loader) +#endif +#if defined(__GNUC__) +#pragma GCC diagnostic push +#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind +#pragma GCC diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' +#pragma GCC diagnostic ignored "-Wcast-function-type" // warning: cast between incompatible function types (for loader) +#pragma GCC diagnostic ignored "-Wstrict-overflow" // warning: assuming signed overflow does not occur when simplifying division / ..when changing X +- C1 cmp C2 to X cmp C2 -+ C1 +#endif + +// GL includes +#if defined(IMGUI_IMPL_OPENGL_ES2) +#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) +#include // Use GL ES 2 +#else +#include // Use GL ES 2 +#endif +#if defined(__EMSCRIPTEN__) +#ifndef GL_GLEXT_PROTOTYPES +#define GL_GLEXT_PROTOTYPES +#endif +#include +#endif +#elif defined(IMGUI_IMPL_OPENGL_ES3) +#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) +#include // Use GL ES 3 +#else +#include // Use GL ES 3 +#endif +#elif !defined(IMGUI_IMPL_OPENGL_LOADER_CUSTOM) +// Modern desktop OpenGL doesn't have a standard portable header file to load OpenGL function pointers. +// Helper libraries are often used for this purpose! Here we are using our own minimal custom loader based on gl3w. +// In the rest of your app/engine, you can use another loader of your choice (gl3w, glew, glad, glbinding, glext, glLoadGen, etc.). +// If you happen to be developing a new feature for this backend (imgui_impl_opengl3.cpp): +// - You may need to regenerate imgui_impl_opengl3_loader.h to add new symbols. See https://github.com/dearimgui/gl3w_stripped +// Typically you would run: python3 ./gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt +// - You can temporarily use an unstripped version. See https://github.com/dearimgui/gl3w_stripped/releases +// Changes to this backend using new APIs should be accompanied by a regenerated stripped loader version. +#define IMGL3W_IMPL +#define IMGUI_IMPL_OPENGL_LOADER_IMGL3W +#include "ui/gl/loader.hpp" +#endif + +// Vertex arrays are not supported on ES2/WebGL1 unless Emscripten which uses an extension +#ifndef IMGUI_IMPL_OPENGL_ES2 +#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY +#elif defined(__EMSCRIPTEN__) +#define IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY +#define glBindVertexArray glBindVertexArrayOES +#define glGenVertexArrays glGenVertexArraysOES +#define glDeleteVertexArrays glDeleteVertexArraysOES +#define GL_VERTEX_ARRAY_BINDING GL_VERTEX_ARRAY_BINDING_OES +#endif + +// Desktop GL 2.0+ has extension and glPolygonMode() which GL ES and WebGL don't have.. +// A desktop ES context can technically compile fine with our loader, so we also perform a runtime checks +#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) +#define IMGUI_IMPL_OPENGL_HAS_EXTENSIONS // has glGetIntegerv(GL_NUM_EXTENSIONS) +#define IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE // may have glPolygonMode() +#endif + +// Desktop GL 2.1+ and GL ES 3.0+ have glBindBuffer() with GL_PIXEL_UNPACK_BUFFER target. +#if !defined(IMGUI_IMPL_OPENGL_ES2) +#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK +#endif + +// Desktop GL 3.1+ has GL_PRIMITIVE_RESTART state +#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_1) +#define IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART +#endif + +// Desktop GL 3.2+ has glDrawElementsBaseVertex() which GL ES and WebGL don't have. +#if !defined(IMGUI_IMPL_OPENGL_ES2) && !defined(IMGUI_IMPL_OPENGL_ES3) && defined(GL_VERSION_3_2) +#define IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET +#endif + +// Desktop GL 3.3+ and GL ES 3.0+ have glBindSampler() +#if !defined(IMGUI_IMPL_OPENGL_ES2) && (defined(IMGUI_IMPL_OPENGL_ES3) || defined(GL_VERSION_3_3)) +#define IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER +#endif + +// [Debugging] +//#define IMGUI_IMPL_OPENGL_DEBUG +#ifdef IMGUI_IMPL_OPENGL_DEBUG +#include +#define GL_CALL(_CALL) do { _CALL; GLenum gl_err = glGetError(); if (gl_err != 0) fprintf(stderr, "GL error 0x%x returned from '%s'.\n", gl_err, #_CALL); } while (0) // Call with error check +#else +#define GL_CALL(_CALL) _CALL // Call without error check +#endif + +// OpenGL Data +struct ImGui_ImplOpenGL3_Data +{ + GLuint GlVersion; // Extracted at runtime using GL_MAJOR_VERSION, GL_MINOR_VERSION queries (e.g. 320 for GL 3.2) + char GlslVersionString[32]; // Specified by user or detected based on compile time GL settings. + bool GlProfileIsES2; + bool GlProfileIsES3; + bool GlProfileIsCompat; + GLint GlProfileMask; + GLint MaxTextureSize; + GLuint ShaderHandle; + GLint AttribLocationTex; // Uniforms location + GLint AttribLocationProjMtx; + GLuint AttribLocationVtxPos; // Vertex attributes location + GLuint AttribLocationVtxUV; + GLuint AttribLocationVtxColor; + unsigned int VboHandle, ElementsHandle; + GLsizeiptr VertexBufferSize; + GLsizeiptr IndexBufferSize; + bool HasPolygonMode; + bool HasClipOrigin; + bool UseBufferSubData; + ImVector TempBuffer; + + ImGui_ImplOpenGL3_Data() { memset((void*)this, 0, sizeof(*this)); } +}; + +// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts +// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts. +static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData() +{ + return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr; +} + +// Forward Declarations +static void ImGui_ImplOpenGL3_InitMultiViewportSupport(); +static void ImGui_ImplOpenGL3_ShutdownMultiViewportSupport(); + +// OpenGL vertex attribute state (for ES 1.0 and ES 2.0 only) +#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY +struct ImGui_ImplOpenGL3_VtxAttribState +{ + GLint Enabled, Size, Type, Normalized, Stride; + GLvoid* Ptr; + + void GetState(GLint index) + { + glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_ENABLED, &Enabled); + glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_SIZE, &Size); + glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_TYPE, &Type); + glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_NORMALIZED, &Normalized); + glGetVertexAttribiv(index, GL_VERTEX_ATTRIB_ARRAY_STRIDE, &Stride); + glGetVertexAttribPointerv(index, GL_VERTEX_ATTRIB_ARRAY_POINTER, &Ptr); + } + void SetState(GLint index) + { + glVertexAttribPointer(index, Size, Type, (GLboolean)Normalized, Stride, Ptr); + if (Enabled) glEnableVertexAttribArray(index); else glDisableVertexAttribArray(index); + } +}; +#endif + +// Not static to allow third-party code to use that if they want to (but undocumented) +bool ImGui_ImplOpenGL3_InitLoader(); +bool ImGui_ImplOpenGL3_InitLoader() +{ + // Initialize our loader +#ifdef IMGUI_IMPL_OPENGL_LOADER_IMGL3W + if (glGetIntegerv == nullptr && imgl3wInit() != 0) + { + fprintf(stderr, "Failed to initialize OpenGL loader!\n"); + return false; + } +#endif + return true; +} + +// Functions +bool ImGui_ImplOpenGL3_Init(const char* glsl_version) +{ + ImGuiIO& io = ImGui::GetIO(); + IMGUI_CHECKVERSION(); + IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!"); + + // Initialize loader + if (!ImGui_ImplOpenGL3_InitLoader()) + return false; + + // Setup backend capabilities flags + ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)(); + io.BackendRendererUserData = (void*)bd; + io.BackendRendererName = "imgui_impl_opengl3"; + + // Query for GL version (e.g. 320 for GL 3.2) + const char* gl_version_str = (const char*)glGetString(GL_VERSION); +#if defined(IMGUI_IMPL_OPENGL_ES2) + // GLES 2 + bd->GlVersion = 200; + bd->GlProfileIsES2 = true; + IM_UNUSED(gl_version_str); +#else + // Desktop or GLES 3 + GLint major = 0; + GLint minor = 0; + glGetIntegerv(GL_MAJOR_VERSION, &major); + glGetIntegerv(GL_MINOR_VERSION, &minor); + if (major == 0 && minor == 0) + sscanf(gl_version_str, "%d.%d", &major, &minor); // Query GL_VERSION in desktop GL 2.x, the string will start with "." + bd->GlVersion = (GLuint)(major * 100 + minor * 10); + glGetIntegerv(GL_MAX_TEXTURE_SIZE, &bd->MaxTextureSize); + +#if defined(IMGUI_IMPL_OPENGL_ES3) + bd->GlProfileIsES3 = true; +#else + if (strncmp(gl_version_str, "OpenGL ES 3", 11) == 0) + bd->GlProfileIsES3 = true; +#endif + +#if defined(GL_CONTEXT_PROFILE_MASK) + if (!bd->GlProfileIsES3 && bd->GlVersion >= 320) + glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &bd->GlProfileMask); + bd->GlProfileIsCompat = (bd->GlProfileMask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT) != 0; +#endif + + bd->UseBufferSubData = false; + /* + // Query vendor to enable glBufferSubData kludge +#ifdef _WIN32 + if (const char* vendor = (const char*)glGetString(GL_VENDOR)) + if (strncmp(vendor, "Intel", 5) == 0) + bd->UseBufferSubData = true; +#endif + */ +#endif + +#ifdef IMGUI_IMPL_OPENGL_DEBUG + printf("GlVersion = %d, \"%s\"\nGlProfileIsCompat = %d\nGlProfileMask = 0x%X\nGlProfileIsES2/IsEs3 = %d/%d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", bd->GlVersion, gl_version_str, bd->GlProfileIsCompat, bd->GlProfileMask, bd->GlProfileIsES2, bd->GlProfileIsES3, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG] +#endif + +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET + if (bd->GlVersion >= 320) + io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes. +#endif + io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures; // We can honor ImGuiPlatformIO::Textures[] requests during render. + io.BackendFlags |= ImGuiBackendFlags_RendererHasViewports; // We can create multi-viewports on the Renderer side (optional) + + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = (int)bd->MaxTextureSize; + + // Store GLSL version string so we can refer to it later in case we recreate shaders. + // Note: GLSL version is NOT the same as GL version. Leave this to nullptr if unsure. + if (glsl_version == nullptr) + { +#if defined(IMGUI_IMPL_OPENGL_ES2) + glsl_version = "#version 100"; +#elif defined(IMGUI_IMPL_OPENGL_ES3) + glsl_version = "#version 300 es"; +#elif defined(__APPLE__) + glsl_version = "#version 150"; +#else + glsl_version = "#version 130"; +#endif + } + IM_ASSERT((int)strlen(glsl_version) + 2 < IM_ARRAYSIZE(bd->GlslVersionString)); + strcpy(bd->GlslVersionString, glsl_version); + strcat(bd->GlslVersionString, "\n"); + + // Make an arbitrary GL call (we don't actually need the result) + // IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know! + GLint current_texture; + glGetIntegerv(GL_TEXTURE_BINDING_2D, ¤t_texture); + + // Detect extensions we support +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE + bd->HasPolygonMode = (!bd->GlProfileIsES2 && !bd->GlProfileIsES3); +#endif + bd->HasClipOrigin = (bd->GlVersion >= 450); +#ifdef IMGUI_IMPL_OPENGL_HAS_EXTENSIONS + GLint num_extensions = 0; + glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions); + for (GLint i = 0; i < num_extensions; i++) + { + const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i); + if (extension != nullptr && strcmp(extension, "GL_ARB_clip_control") == 0) + bd->HasClipOrigin = true; + } +#endif + + ImGui_ImplOpenGL3_InitMultiViewportSupport(); + + return true; +} + +void ImGui_ImplOpenGL3_Shutdown() +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?"); + ImGuiIO& io = ImGui::GetIO(); + + ImGui_ImplOpenGL3_ShutdownMultiViewportSupport(); + ImGui_ImplOpenGL3_DestroyDeviceObjects(); + io.BackendRendererName = nullptr; + io.BackendRendererUserData = nullptr; + io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures | ImGuiBackendFlags_RendererHasViewports); + IM_DELETE(bd); +} + +void ImGui_ImplOpenGL3_NewFrame() +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplOpenGL3_Init()?"); + + ImGui_ImplOpenGL3_InitLoader(); // Lazily init loader if not already done for e.g. DLL boundaries. + + if (!bd->ShaderHandle) + if (!ImGui_ImplOpenGL3_CreateDeviceObjects()) + IM_ASSERT(0 && "ImGui_ImplOpenGL3_CreateDeviceObjects() failed!"); +} + +static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object) +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + + // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, polygon fill + glEnable(GL_BLEND); + glBlendEquation(GL_FUNC_ADD); + glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA); + glDisable(GL_CULL_FACE); + glDisable(GL_DEPTH_TEST); + glDisable(GL_STENCIL_TEST); + glEnable(GL_SCISSOR_TEST); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART + if (!bd->GlProfileIsES3 && bd->GlVersion >= 310) + glDisable(GL_PRIMITIVE_RESTART); +#endif +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE + if (bd->HasPolygonMode) + glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); +#endif + + // Support for GL 4.5 rarely used glClipControl(GL_UPPER_LEFT) +#if defined(GL_CLIP_ORIGIN) + bool clip_origin_lower_left = true; + if (bd->HasClipOrigin) + { + GLenum current_clip_origin = 0; glGetIntegerv(GL_CLIP_ORIGIN, (GLint*)¤t_clip_origin); + if (current_clip_origin == GL_UPPER_LEFT) + clip_origin_lower_left = false; + } +#endif + + // Setup viewport, orthographic projection matrix + // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps. + GL_CALL(glViewport(0, 0, (GLsizei)fb_width, (GLsizei)fb_height)); + float L = draw_data->DisplayPos.x; + float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x; + float T = draw_data->DisplayPos.y; + float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y; +#if defined(GL_CLIP_ORIGIN) + if (!clip_origin_lower_left) { float tmp = T; T = B; B = tmp; } // Swap top and bottom if origin is upper left +#endif + const float ortho_projection[4][4] = + { + { 2.0f/(R-L), 0.0f, 0.0f, 0.0f }, + { 0.0f, 2.0f/(T-B), 0.0f, 0.0f }, + { 0.0f, 0.0f, -1.0f, 0.0f }, + { (R+L)/(L-R), (T+B)/(B-T), 0.0f, 1.0f }, + }; + glUseProgram(bd->ShaderHandle); + glUniform1i(bd->AttribLocationTex, 0); + glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]); + +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER + if (bd->GlVersion >= 330 || bd->GlProfileIsES3) + glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 and GL ES 3.0 may set that otherwise. +#endif + + (void)vertex_array_object; +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + glBindVertexArray(vertex_array_object); +#endif + + // Bind vertex/index buffers and setup attributes for ImDrawVert + GL_CALL(glBindBuffer(GL_ARRAY_BUFFER, bd->VboHandle)); + GL_CALL(glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, bd->ElementsHandle)); + GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxPos)); + GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxUV)); + GL_CALL(glEnableVertexAttribArray(bd->AttribLocationVtxColor)); + GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxPos, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)offsetof(ImDrawVert, pos))); + GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxUV, 2, GL_FLOAT, GL_FALSE, sizeof(ImDrawVert), (GLvoid*)offsetof(ImDrawVert, uv))); + GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)offsetof(ImDrawVert, col))); +} + +// OpenGL3 Render function. +// Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly. +// This is in order to be able to run within an OpenGL engine that doesn't do so. +void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data) +{ + // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates) + int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x); + int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y); + if (fb_width <= 0 || fb_height <= 0) + return; + + ImGui_ImplOpenGL3_InitLoader(); // Lazily init loader if not already done for e.g. DLL boundaries. + + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + + // Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do. + // (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates). + if (draw_data->Textures != nullptr) + for (ImTextureData* tex : *draw_data->Textures) + if (tex->Status != ImTextureStatus_OK) + ImGui_ImplOpenGL3_UpdateTexture(tex); + + // Backup GL state + GLenum last_active_texture; glGetIntegerv(GL_ACTIVE_TEXTURE, (GLint*)&last_active_texture); + glActiveTexture(GL_TEXTURE0); + GLuint last_program; glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&last_program); + GLuint last_texture; glGetIntegerv(GL_TEXTURE_BINDING_2D, (GLint*)&last_texture); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER + GLuint last_sampler; if (bd->GlVersion >= 330 || bd->GlProfileIsES3) { glGetIntegerv(GL_SAMPLER_BINDING, (GLint*)&last_sampler); } else { last_sampler = 0; } +#endif + GLuint last_array_buffer; glGetIntegerv(GL_ARRAY_BUFFER_BINDING, (GLint*)&last_array_buffer); +#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + // This is part of VAO on OpenGL 3.0+ and OpenGL ES 3.0+. + GLint last_element_array_buffer; glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING, &last_element_array_buffer); + ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_pos; last_vtx_attrib_state_pos.GetState(bd->AttribLocationVtxPos); + ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_uv; last_vtx_attrib_state_uv.GetState(bd->AttribLocationVtxUV); + ImGui_ImplOpenGL3_VtxAttribState last_vtx_attrib_state_color; last_vtx_attrib_state_color.GetState(bd->AttribLocationVtxColor); +#endif +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + GLuint last_vertex_array_object; glGetIntegerv(GL_VERTEX_ARRAY_BINDING, (GLint*)&last_vertex_array_object); +#endif +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE + GLint last_polygon_mode[2]; if (bd->HasPolygonMode) { glGetIntegerv(GL_POLYGON_MODE, last_polygon_mode); } +#endif + GLint last_viewport[4]; glGetIntegerv(GL_VIEWPORT, last_viewport); + GLint last_scissor_box[4]; glGetIntegerv(GL_SCISSOR_BOX, last_scissor_box); + GLenum last_blend_src_rgb; glGetIntegerv(GL_BLEND_SRC_RGB, (GLint*)&last_blend_src_rgb); + GLenum last_blend_dst_rgb; glGetIntegerv(GL_BLEND_DST_RGB, (GLint*)&last_blend_dst_rgb); + GLenum last_blend_src_alpha; glGetIntegerv(GL_BLEND_SRC_ALPHA, (GLint*)&last_blend_src_alpha); + GLenum last_blend_dst_alpha; glGetIntegerv(GL_BLEND_DST_ALPHA, (GLint*)&last_blend_dst_alpha); + GLenum last_blend_equation_rgb; glGetIntegerv(GL_BLEND_EQUATION_RGB, (GLint*)&last_blend_equation_rgb); + GLenum last_blend_equation_alpha; glGetIntegerv(GL_BLEND_EQUATION_ALPHA, (GLint*)&last_blend_equation_alpha); + GLboolean last_enable_blend = glIsEnabled(GL_BLEND); + GLboolean last_enable_cull_face = glIsEnabled(GL_CULL_FACE); + GLboolean last_enable_depth_test = glIsEnabled(GL_DEPTH_TEST); + GLboolean last_enable_stencil_test = glIsEnabled(GL_STENCIL_TEST); + GLboolean last_enable_scissor_test = glIsEnabled(GL_SCISSOR_TEST); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART + GLboolean last_enable_primitive_restart = (!bd->GlProfileIsES3 && bd->GlVersion >= 310) ? glIsEnabled(GL_PRIMITIVE_RESTART) : GL_FALSE; +#endif + + // Setup desired GL state + // Recreate the VAO every time (this is to easily allow multiple GL contexts to be rendered to. VAO are not shared among GL contexts) + // The renderer would actually work without any VAO bound, but then our VertexAttrib calls would overwrite the default one currently bound. + GLuint vertex_array_object = 0; +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + GL_CALL(glGenVertexArrays(1, &vertex_array_object)); +#endif + ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object); + + // Will project scissor/clipping rectangles into framebuffer space + ImVec2 clip_off = draw_data->DisplayPos; // (0,0) unless using multi-viewports + ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2) + + // Render command lists + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* draw_list = draw_data->CmdLists[n]; + + // Upload vertex/index buffers + // - OpenGL drivers are in a very sorry state nowadays.... + // During 2021 we attempted to switch from glBufferData() to orphaning+glBufferSubData() following reports + // of leaks on Intel GPU when using multi-viewports on Windows. + // - After this we kept hearing of various display corruptions issues. We started disabling on non-Intel GPU, but issues still got reported on Intel. + // - We are now back to using exclusively glBufferData(). So bd->UseBufferSubData IS ALWAYS FALSE in this code. + // We are keeping the old code path for a while in case people finding new issues may want to test the bd->UseBufferSubData path. + // - See https://github.com/ocornut/imgui/issues/4468 and please report any corruption issues. + const GLsizeiptr vtx_buffer_size = (GLsizeiptr)draw_list->VtxBuffer.Size * (int)sizeof(ImDrawVert); + const GLsizeiptr idx_buffer_size = (GLsizeiptr)draw_list->IdxBuffer.Size * (int)sizeof(ImDrawIdx); + if (bd->UseBufferSubData) + { + if (bd->VertexBufferSize < vtx_buffer_size) + { + bd->VertexBufferSize = vtx_buffer_size; + GL_CALL(glBufferData(GL_ARRAY_BUFFER, bd->VertexBufferSize, nullptr, GL_STREAM_DRAW)); + } + if (bd->IndexBufferSize < idx_buffer_size) + { + bd->IndexBufferSize = idx_buffer_size; + GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, bd->IndexBufferSize, nullptr, GL_STREAM_DRAW)); + } + GL_CALL(glBufferSubData(GL_ARRAY_BUFFER, 0, vtx_buffer_size, (const GLvoid*)draw_list->VtxBuffer.Data)); + GL_CALL(glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, idx_buffer_size, (const GLvoid*)draw_list->IdxBuffer.Data)); + } + else + { + GL_CALL(glBufferData(GL_ARRAY_BUFFER, vtx_buffer_size, (const GLvoid*)draw_list->VtxBuffer.Data, GL_STREAM_DRAW)); + GL_CALL(glBufferData(GL_ELEMENT_ARRAY_BUFFER, idx_buffer_size, (const GLvoid*)draw_list->IdxBuffer.Data, GL_STREAM_DRAW)); + } + + for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++) + { + const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i]; + if (pcmd->UserCallback != nullptr) + { + // User callback, registered via ImDrawList::AddCallback() + // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.) + if (pcmd->UserCallback == ImDrawCallback_ResetRenderState) + ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object); + else + pcmd->UserCallback(draw_list, pcmd); + } + else + { + // Project scissor/clipping rectangles into framebuffer space + ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y); + ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y); + if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y) + continue; + + // Apply scissor/clipping rectangle (Y is inverted in OpenGL) + GL_CALL(glScissor((int)clip_min.x, (int)((float)fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y))); + + // Bind texture, Draw + GL_CALL(glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID())); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET + if (bd->GlVersion >= 320) + GL_CALL(glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset)); + else +#endif + GL_CALL(glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)))); + } + } + } + + // Destroy the temporary VAO +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + GL_CALL(glDeleteVertexArrays(1, &vertex_array_object)); +#endif + + // Restore modified GL state + // This "glIsProgram()" check is required because if the program is "pending deletion" at the time of binding backup, it will have been deleted by now and will cause an OpenGL error. See #6220. + if (last_program == 0 || glIsProgram(last_program)) glUseProgram(last_program); + glBindTexture(GL_TEXTURE_2D, last_texture); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER + if (bd->GlVersion >= 330 || bd->GlProfileIsES3) + glBindSampler(0, last_sampler); +#endif + glActiveTexture(last_active_texture); +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + glBindVertexArray(last_vertex_array_object); +#endif + glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); +#ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, last_element_array_buffer); + last_vtx_attrib_state_pos.SetState(bd->AttribLocationVtxPos); + last_vtx_attrib_state_uv.SetState(bd->AttribLocationVtxUV); + last_vtx_attrib_state_color.SetState(bd->AttribLocationVtxColor); +#endif + glBlendEquationSeparate(last_blend_equation_rgb, last_blend_equation_alpha); + glBlendFuncSeparate(last_blend_src_rgb, last_blend_dst_rgb, last_blend_src_alpha, last_blend_dst_alpha); + if (last_enable_blend) glEnable(GL_BLEND); else glDisable(GL_BLEND); + if (last_enable_cull_face) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE); + if (last_enable_depth_test) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST); + if (last_enable_stencil_test) glEnable(GL_STENCIL_TEST); else glDisable(GL_STENCIL_TEST); + if (last_enable_scissor_test) glEnable(GL_SCISSOR_TEST); else glDisable(GL_SCISSOR_TEST); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_PRIMITIVE_RESTART + if (!bd->GlProfileIsES3 && bd->GlVersion >= 310) { if (last_enable_primitive_restart) glEnable(GL_PRIMITIVE_RESTART); else glDisable(GL_PRIMITIVE_RESTART); } +#endif + +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE + // Desktop OpenGL 3.0 and OpenGL 3.1 had separate polygon draw modes for front-facing and back-facing faces of polygons + if (bd->HasPolygonMode) { if (bd->GlVersion <= 310 || bd->GlProfileIsCompat) { glPolygonMode(GL_FRONT, (GLenum)last_polygon_mode[0]); glPolygonMode(GL_BACK, (GLenum)last_polygon_mode[1]); } else { glPolygonMode(GL_FRONT_AND_BACK, (GLenum)last_polygon_mode[0]); } } +#endif // IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE + + glViewport(last_viewport[0], last_viewport[1], (GLsizei)last_viewport[2], (GLsizei)last_viewport[3]); + glScissor(last_scissor_box[0], last_scissor_box[1], (GLsizei)last_scissor_box[2], (GLsizei)last_scissor_box[3]); + (void)bd; // Not all compilation paths use this +} + +static void ImGui_ImplOpenGL3_DestroyTexture(ImTextureData* tex) +{ + GLuint gl_tex_id = (GLuint)(intptr_t)tex->TexID; + glDeleteTextures(1, &gl_tex_id); + + // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running) + tex->SetTexID(ImTextureID_Invalid); + tex->SetStatus(ImTextureStatus_Destroyed); +} + +void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex) +{ + if (tex->Status == ImTextureStatus_WantCreate) + { + // Create and upload new texture to graphics system + //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height); + IM_ASSERT(tex->TexID == 0 && tex->BackendUserData == nullptr); + IM_ASSERT(tex->Format == ImTextureFormat_RGBA32); + const void* pixels = tex->GetPixels(); + GLuint gl_texture_id = 0; + + // Upload texture to graphics system + // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling) + GLint last_texture; + GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture)); + GL_CALL(glGenTextures(1, &gl_texture_id)); + GL_CALL(glBindTexture(GL_TEXTURE_2D, gl_texture_id)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE)); + GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE)); +#ifdef GL_UNPACK_ROW_LENGTH // Not on WebGL/ES + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0)); +#endif + GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex->Width, tex->Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels)); + + // Store identifiers + tex->SetTexID((ImTextureID)(intptr_t)gl_texture_id); + tex->SetStatus(ImTextureStatus_OK); + + // Restore state + GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture)); + } + else if (tex->Status == ImTextureStatus_WantUpdates) + { + // Update selected blocks. We only ever write to textures regions which have never been used before! + // This backend choose to use tex->Updates[] but you can use tex->UpdateRect to upload a single region. + GLint last_texture; + GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture)); + + GLuint gl_tex_id = (GLuint)(intptr_t)tex->TexID; + GL_CALL(glBindTexture(GL_TEXTURE_2D, gl_tex_id)); +#if 0// GL_UNPACK_ROW_LENGTH // Not on WebGL/ES + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->Width)); + for (ImTextureRect& r : tex->Updates) + GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, r.x, r.y, r.w, r.h, GL_RGBA, GL_UNSIGNED_BYTE, tex->GetPixelsAt(r.x, r.y))); + GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0)); +#else + // GL ES doesn't have GL_UNPACK_ROW_LENGTH, so we need to (A) copy to a contiguous buffer or (B) upload line by line. + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + for (ImTextureRect& r : tex->Updates) + { + const int src_pitch = r.w * tex->BytesPerPixel; + bd->TempBuffer.resize(r.h * src_pitch); + char* out_p = bd->TempBuffer.Data; + for (int y = 0; y < r.h; y++, out_p += src_pitch) + memcpy(out_p, tex->GetPixelsAt(r.x, r.y + y), src_pitch); + IM_ASSERT(out_p == bd->TempBuffer.end()); + GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, r.x, r.y, r.w, r.h, GL_RGBA, GL_UNSIGNED_BYTE, bd->TempBuffer.Data)); + } +#endif + tex->SetStatus(ImTextureStatus_OK); + GL_CALL(glBindTexture(GL_TEXTURE_2D, last_texture)); // Restore state + } + else if (tex->Status == ImTextureStatus_WantDestroy && tex->UnusedFrames > 0) + ImGui_ImplOpenGL3_DestroyTexture(tex); +} + +// If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file. +static bool CheckShader(GLuint handle, const char* desc) +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + GLint status = 0, log_length = 0; + glGetShaderiv(handle, GL_COMPILE_STATUS, &status); + glGetShaderiv(handle, GL_INFO_LOG_LENGTH, &log_length); + if ((GLboolean)status == GL_FALSE) + fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to compile %s! With GLSL: %s\n", desc, bd->GlslVersionString); + if (log_length > 1) + { + ImVector buf; + buf.resize((int)(log_length + 1)); + glGetShaderInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin()); + fprintf(stderr, "%s\n", buf.begin()); + } + return (GLboolean)status == GL_TRUE; +} + +// If you get an error please report on GitHub. You may try different GL context version or GLSL version. +static bool CheckProgram(GLuint handle, const char* desc) +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + GLint status = 0, log_length = 0; + glGetProgramiv(handle, GL_LINK_STATUS, &status); + glGetProgramiv(handle, GL_INFO_LOG_LENGTH, &log_length); + if ((GLboolean)status == GL_FALSE) + fprintf(stderr, "ERROR: ImGui_ImplOpenGL3_CreateDeviceObjects: failed to link %s! With GLSL %s\n", desc, bd->GlslVersionString); + if (log_length > 1) + { + ImVector buf; + buf.resize((int)(log_length + 1)); + glGetProgramInfoLog(handle, log_length, nullptr, (GLchar*)buf.begin()); + fprintf(stderr, "%s\n", buf.begin()); + } + return (GLboolean)status == GL_TRUE; +} + +bool ImGui_ImplOpenGL3_CreateDeviceObjects() +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + + // Backup GL state + GLint last_texture, last_array_buffer; + glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture); + glGetIntegerv(GL_ARRAY_BUFFER_BINDING, &last_array_buffer); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK + GLint last_pixel_unpack_buffer = 0; + if (bd->GlVersion >= 210) { glGetIntegerv(GL_PIXEL_UNPACK_BUFFER_BINDING, &last_pixel_unpack_buffer); glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0); } +#endif +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + GLint last_vertex_array; + glGetIntegerv(GL_VERTEX_ARRAY_BINDING, &last_vertex_array); +#endif + + // Parse GLSL version string + int glsl_version = 130; + sscanf(bd->GlslVersionString, "#version %d", &glsl_version); + + const GLchar* vertex_shader_glsl_120 = + "uniform mat4 ProjMtx;\n" + "attribute vec2 Position;\n" + "attribute vec2 UV;\n" + "attribute vec4 Color;\n" + "varying vec2 Frag_UV;\n" + "varying vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " Frag_UV = UV;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" + "}\n"; + + const GLchar* vertex_shader_glsl_130 = + "uniform mat4 ProjMtx;\n" + "in vec2 Position;\n" + "in vec2 UV;\n" + "in vec4 Color;\n" + "out vec2 Frag_UV;\n" + "out vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " Frag_UV = UV;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" + "}\n"; + + const GLchar* vertex_shader_glsl_300_es = + "precision highp float;\n" + "layout (location = 0) in vec2 Position;\n" + "layout (location = 1) in vec2 UV;\n" + "layout (location = 2) in vec4 Color;\n" + "uniform mat4 ProjMtx;\n" + "out vec2 Frag_UV;\n" + "out vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " Frag_UV = UV;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" + "}\n"; + + const GLchar* vertex_shader_glsl_410_core = + "layout (location = 0) in vec2 Position;\n" + "layout (location = 1) in vec2 UV;\n" + "layout (location = 2) in vec4 Color;\n" + "uniform mat4 ProjMtx;\n" + "out vec2 Frag_UV;\n" + "out vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " Frag_UV = UV;\n" + " Frag_Color = Color;\n" + " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n" + "}\n"; + + const GLchar* fragment_shader_glsl_120 = + "#ifdef GL_ES\n" + " precision mediump float;\n" + "#endif\n" + "uniform sampler2D Texture;\n" + "varying vec2 Frag_UV;\n" + "varying vec4 Frag_Color;\n" + "void main()\n" + "{\n" + " gl_FragColor = Frag_Color * texture2D(Texture, Frag_UV.st);\n" + "}\n"; + + const GLchar* fragment_shader_glsl_130 = + "uniform sampler2D Texture;\n" + "in vec2 Frag_UV;\n" + "in vec4 Frag_Color;\n" + "out vec4 Out_Color;\n" + "void main()\n" + "{\n" + " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" + "}\n"; + + const GLchar* fragment_shader_glsl_300_es = + "precision mediump float;\n" + "uniform sampler2D Texture;\n" + "in vec2 Frag_UV;\n" + "in vec4 Frag_Color;\n" + "layout (location = 0) out vec4 Out_Color;\n" + "void main()\n" + "{\n" + " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" + "}\n"; + + const GLchar* fragment_shader_glsl_410_core = + "in vec2 Frag_UV;\n" + "in vec4 Frag_Color;\n" + "uniform sampler2D Texture;\n" + "layout (location = 0) out vec4 Out_Color;\n" + "void main()\n" + "{\n" + " Out_Color = Frag_Color * texture(Texture, Frag_UV.st);\n" + "}\n"; + + // Select shaders matching our GLSL versions + const GLchar* vertex_shader = nullptr; + const GLchar* fragment_shader = nullptr; + if (glsl_version < 130) + { + vertex_shader = vertex_shader_glsl_120; + fragment_shader = fragment_shader_glsl_120; + } + else if (glsl_version >= 410) + { + vertex_shader = vertex_shader_glsl_410_core; + fragment_shader = fragment_shader_glsl_410_core; + } + else if (glsl_version == 300) + { + vertex_shader = vertex_shader_glsl_300_es; + fragment_shader = fragment_shader_glsl_300_es; + } + else + { + vertex_shader = vertex_shader_glsl_130; + fragment_shader = fragment_shader_glsl_130; + } + + // Create shaders + const GLchar* vertex_shader_with_version[2] = { bd->GlslVersionString, vertex_shader }; + GLuint vert_handle; + GL_CALL(vert_handle = glCreateShader(GL_VERTEX_SHADER)); + glShaderSource(vert_handle, 2, vertex_shader_with_version, nullptr); + glCompileShader(vert_handle); + if (!CheckShader(vert_handle, "vertex shader")) + return false; + + const GLchar* fragment_shader_with_version[2] = { bd->GlslVersionString, fragment_shader }; + GLuint frag_handle; + GL_CALL(frag_handle = glCreateShader(GL_FRAGMENT_SHADER)); + glShaderSource(frag_handle, 2, fragment_shader_with_version, nullptr); + glCompileShader(frag_handle); + if (!CheckShader(frag_handle, "fragment shader")) + return false; + + // Link + bd->ShaderHandle = glCreateProgram(); + glAttachShader(bd->ShaderHandle, vert_handle); + glAttachShader(bd->ShaderHandle, frag_handle); + glLinkProgram(bd->ShaderHandle); + if (!CheckProgram(bd->ShaderHandle, "shader program")) + return false; + + glDetachShader(bd->ShaderHandle, vert_handle); + glDetachShader(bd->ShaderHandle, frag_handle); + glDeleteShader(vert_handle); + glDeleteShader(frag_handle); + + bd->AttribLocationTex = glGetUniformLocation(bd->ShaderHandle, "Texture"); + bd->AttribLocationProjMtx = glGetUniformLocation(bd->ShaderHandle, "ProjMtx"); + bd->AttribLocationVtxPos = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Position"); + bd->AttribLocationVtxUV = (GLuint)glGetAttribLocation(bd->ShaderHandle, "UV"); + bd->AttribLocationVtxColor = (GLuint)glGetAttribLocation(bd->ShaderHandle, "Color"); + + // Create buffers + glGenBuffers(1, &bd->VboHandle); + glGenBuffers(1, &bd->ElementsHandle); + + // Restore modified GL state + glBindTexture(GL_TEXTURE_2D, last_texture); + glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer); +#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_BUFFER_PIXEL_UNPACK + if (bd->GlVersion >= 210) { glBindBuffer(GL_PIXEL_UNPACK_BUFFER, last_pixel_unpack_buffer); } +#endif +#ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY + glBindVertexArray(last_vertex_array); +#endif + + return true; +} + +void ImGui_ImplOpenGL3_DestroyDeviceObjects() +{ + ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData(); + if (bd->VboHandle) { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; } + if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; } + if (bd->ShaderHandle) { glDeleteProgram(bd->ShaderHandle); bd->ShaderHandle = 0; } + + // Destroy all textures + for (ImTextureData* tex : ImGui::GetPlatformIO().Textures) + if (tex->RefCount == 1) + ImGui_ImplOpenGL3_DestroyTexture(tex); +} + +//-------------------------------------------------------------------------------------------------------- +// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT +// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously. +// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first.. +//-------------------------------------------------------------------------------------------------------- + +static void ImGui_ImplOpenGL3_RenderWindow(ImGuiViewport* viewport, void*) +{ + if (!(viewport->Flags & ImGuiViewportFlags_NoRendererClear)) + { + ImVec4 clear_color = ImVec4(0.0f, 0.0f, 0.0f, 1.0f); + glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w); + glClear(GL_COLOR_BUFFER_BIT); + } + ImGui_ImplOpenGL3_RenderDrawData(viewport->DrawData); +} + +static void ImGui_ImplOpenGL3_InitMultiViewportSupport() +{ + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + platform_io.Renderer_RenderWindow = ImGui_ImplOpenGL3_RenderWindow; +} + +static void ImGui_ImplOpenGL3_ShutdownMultiViewportSupport() +{ + ImGui::DestroyPlatformWindows(); +} + +//----------------------------------------------------------------------------- + +#if defined(__GNUC__) +#pragma GCC diagnostic pop +#endif +#if defined(__clang__) +#pragma clang diagnostic pop +#endif + +#endif // #ifndef IMGUI_DISABLE diff --git a/modules/ui/private/gl/backend.hpp b/modules/ui/private/gl/backend.hpp new file mode 100644 index 0000000..624d79e --- /dev/null +++ b/modules/ui/private/gl/backend.hpp @@ -0,0 +1,70 @@ +// clang-format off +// dear imgui: Renderer Backend for modern OpenGL with shaders / programmatic pipeline +// - Desktop GL: 2.x 3.x 4.x +// - Embedded GL: ES 2.0 (WebGL 1.0), ES 3.0 (WebGL 2.0) +// This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..) + +// Implemented features: +// [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! +// [x] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset) [Desktop OpenGL only!] +// [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures). +// [X] Renderer: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'. + +// About WebGL/ES: +// - You need to '#define IMGUI_IMPL_OPENGL_ES2' or '#define IMGUI_IMPL_OPENGL_ES3' to use WebGL or OpenGL ES. +// - This is done automatically on iOS, Android and Emscripten targets. +// - For other targets, the define needs to be visible from the imgui_impl_opengl3.cpp compilation unit. If unsure, define globally or in imconfig.h. + +// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. +// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need. +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +// About GLSL version: +// The 'glsl_version' initialization parameter should be nullptr (default) or a "#version XXX" string. +// On computer platform the GLSL version default to "#version 130". On OpenGL ES 3 platform it defaults to "#version 300 es" +// Only override if your GL version doesn't handle this GLSL version. See GLSL version table at the top of imgui_impl_opengl3.cpp. + +#pragma once +#include "imgui.h" // IMGUI_IMPL_API +#ifndef IMGUI_DISABLE + +// Follow "Getting Started" link and check examples/ folder to learn about using backends! +IMGUI_IMPL_API bool ImGui_ImplOpenGL3_Init(const char* glsl_version = nullptr); +IMGUI_IMPL_API void ImGui_ImplOpenGL3_Shutdown(); +IMGUI_IMPL_API void ImGui_ImplOpenGL3_NewFrame(); +IMGUI_IMPL_API void ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data); + +// (Optional) Called by Init/NewFrame/Shutdown +IMGUI_IMPL_API bool ImGui_ImplOpenGL3_CreateDeviceObjects(); +IMGUI_IMPL_API void ImGui_ImplOpenGL3_DestroyDeviceObjects(); + +// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = NULL to handle this manually. +IMGUI_IMPL_API void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex); + +// Configuration flags to add in your imconfig file: +//#define IMGUI_IMPL_OPENGL_ES2 // Enable ES 2 (Auto-detected on Emscripten) +//#define IMGUI_IMPL_OPENGL_ES3 // Enable ES 3 (Auto-detected on iOS/Android) + +// You can explicitly select GLES2 or GLES3 API by using one of the '#define IMGUI_IMPL_OPENGL_LOADER_XXX' in imconfig.h or compiler command-line. +#if !defined(IMGUI_IMPL_OPENGL_ES2) \ + && !defined(IMGUI_IMPL_OPENGL_ES3) + +// Try to detect GLES on matching platforms +#if defined(__APPLE__) +#include +#endif +#if (defined(__APPLE__) && (TARGET_OS_IOS || TARGET_OS_TV)) || (defined(__ANDROID__)) +#define IMGUI_IMPL_OPENGL_ES3 // iOS, Android -> GL ES 3, "#version 300 es" +#elif defined(__EMSCRIPTEN__) || defined(__amigaos4__) +#define IMGUI_IMPL_OPENGL_ES2 // Emscripten -> GL ES 2, "#version 100" +#else +// Otherwise imgui_impl_opengl3_loader.h will be used. +#endif + +#endif + +#endif // #ifndef IMGUI_DISABLE diff --git a/modules/ui/private/gl/loader.hpp b/modules/ui/private/gl/loader.hpp new file mode 100644 index 0000000..ee4cc65 --- /dev/null +++ b/modules/ui/private/gl/loader.hpp @@ -0,0 +1,923 @@ +// clang-format off +//----------------------------------------------------------------------------- +// About imgui_impl_opengl3_loader.h: +// +// We embed our own OpenGL loader to not require user to provide their own or to have to use ours, +// which proved to be endless problems for users. +// Our loader is custom-generated, based on gl3w but automatically filtered to only include +// enums/functions that we use in our imgui_impl_opengl3.cpp source file in order to be small. +// +// YOU SHOULD NOT NEED TO INCLUDE/USE THIS DIRECTLY. THIS IS USED BY imgui_impl_opengl3.cpp ONLY. +// THE REST OF YOUR APP SHOULD USE A DIFFERENT GL LOADER: ANY GL LOADER OF YOUR CHOICE. +// +// IF YOU GET BUILD ERRORS IN THIS FILE (commonly macro redefinitions or function redefinitions): +// IT LIKELY MEANS THAT YOU ARE BUILDING 'imgui_impl_opengl3.cpp' OR INCLUDING 'imgui_impl_opengl3_loader.h' +// IN THE SAME COMPILATION UNIT AS ONE OF YOUR FILE WHICH IS USING A THIRD-PARTY OPENGL LOADER. +// (e.g. COULD HAPPEN IF YOU ARE DOING A UNITY/JUMBO BUILD, OR INCLUDING .CPP FILES FROM OTHERS) +// YOU SHOULD NOT BUILD BOTH IN THE SAME COMPILATION UNIT. +// BUT IF YOU REALLY WANT TO, you can '#define IMGUI_IMPL_OPENGL_LOADER_CUSTOM' and imgui_impl_opengl3.cpp +// WILL NOT BE USING OUR LOADER, AND INSTEAD EXPECT ANOTHER/YOUR LOADER TO BE AVAILABLE IN THE COMPILATION UNIT. +// +// Regenerate with: +// python3 gl3w_gen.py --output ../imgui/backends/imgui_impl_opengl3_loader.h --ref ../imgui/backends/imgui_impl_opengl3.cpp ./extra_symbols.txt +// +// More info: +// https://github.com/dearimgui/gl3w_stripped +// https://github.com/ocornut/imgui/issues/4445 +//----------------------------------------------------------------------------- + +/* + * This file was generated with gl3w_gen.py, part of imgl3w + * (hosted at https://github.com/dearimgui/gl3w_stripped) + * + * This is free and unencumbered software released into the public domain. + * + * Anyone is free to copy, modify, publish, use, compile, sell, or + * distribute this software, either in source code form or as a compiled + * binary, for any purpose, commercial or non-commercial, and by any + * means. + * + * In jurisdictions that recognize copyright laws, the author or authors + * of this software dedicate any and all copyright interest in the + * software to the public domain. We make this dedication for the benefit + * of the public at large and to the detriment of our heirs and + * successors. We intend this dedication to be an overt act of + * relinquishment in perpetuity of all present and future rights to this + * software under copyright law. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __gl3w_h_ +#define __gl3w_h_ + +// Adapted from KHR/khrplatform.h to avoid including entire file. +#ifndef __khrplatform_h_ +typedef float khronos_float_t; +typedef signed char khronos_int8_t; +typedef unsigned char khronos_uint8_t; +typedef signed short int khronos_int16_t; +typedef unsigned short int khronos_uint16_t; +#ifdef _WIN64 +typedef signed long long int khronos_intptr_t; +typedef signed long long int khronos_ssize_t; +#else +typedef signed long int khronos_intptr_t; +typedef signed long int khronos_ssize_t; +#endif + +#if defined(_MSC_VER) && !defined(__clang__) +typedef signed __int64 khronos_int64_t; +typedef unsigned __int64 khronos_uint64_t; +#elif (defined(__clang__) || defined(__GNUC__)) && (__cplusplus < 201100) +#include +typedef int64_t khronos_int64_t; +typedef uint64_t khronos_uint64_t; +#else +typedef signed long long khronos_int64_t; +typedef unsigned long long khronos_uint64_t; +#endif +#endif // __khrplatform_h_ + +#ifndef __gl_glcorearb_h_ +#define __gl_glcorearb_h_ 1 +#ifdef __cplusplus +extern "C" { +#endif +/* +** Copyright 2013-2020 The Khronos Group Inc. +** SPDX-License-Identifier: MIT +** +** This header is generated from the Khronos OpenGL / OpenGL ES XML +** API Registry. The current version of the Registry, generator scripts +** used to make the header, and the header can be found at +** https://github.com/KhronosGroup/OpenGL-Registry +*/ +#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__) +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN 1 +#endif +#include +#endif +#ifndef APIENTRY +#define APIENTRY +#endif +#ifndef APIENTRYP +#define APIENTRYP APIENTRY * +#endif +#ifndef GLAPI +#define GLAPI extern +#endif +/* glcorearb.h is for use with OpenGL core profile implementations. +** It should should be placed in the same directory as gl.h and +** included as . +** +** glcorearb.h includes only APIs in the latest OpenGL core profile +** implementation together with APIs in newer ARB extensions which +** can be supported by the core profile. It does not, and never will +** include functionality removed from the core profile, such as +** fixed-function vertex and fragment processing. +** +** Do not #include both and either of or +** in the same source file. +*/ +/* Generated C header for: + * API: gl + * Profile: core + * Versions considered: .* + * Versions emitted: .* + * Default extensions included: glcore + * Additional extensions included: _nomatch_^ + * Extensions removed: _nomatch_^ + */ +#ifndef GL_VERSION_1_0 +typedef void GLvoid; +typedef unsigned int GLenum; + +typedef khronos_float_t GLfloat; +typedef int GLint; +typedef int GLsizei; +typedef unsigned int GLbitfield; +typedef double GLdouble; +typedef unsigned int GLuint; +typedef unsigned char GLboolean; +typedef khronos_uint8_t GLubyte; +#define GL_COLOR_BUFFER_BIT 0x00004000 +#define GL_FALSE 0 +#define GL_TRUE 1 +#define GL_TRIANGLES 0x0004 +#define GL_ONE 1 +#define GL_SRC_ALPHA 0x0302 +#define GL_ONE_MINUS_SRC_ALPHA 0x0303 +#define GL_FRONT 0x0404 +#define GL_BACK 0x0405 +#define GL_FRONT_AND_BACK 0x0408 +#define GL_POLYGON_MODE 0x0B40 +#define GL_CULL_FACE 0x0B44 +#define GL_DEPTH_TEST 0x0B71 +#define GL_STENCIL_TEST 0x0B90 +#define GL_VIEWPORT 0x0BA2 +#define GL_BLEND 0x0BE2 +#define GL_SCISSOR_BOX 0x0C10 +#define GL_SCISSOR_TEST 0x0C11 +#define GL_UNPACK_ROW_LENGTH 0x0CF2 +#define GL_PACK_ALIGNMENT 0x0D05 +#define GL_MAX_TEXTURE_SIZE 0x0D33 +#define GL_TEXTURE_2D 0x0DE1 +#define GL_UNSIGNED_BYTE 0x1401 +#define GL_UNSIGNED_SHORT 0x1403 +#define GL_UNSIGNED_INT 0x1405 +#define GL_FLOAT 0x1406 +#define GL_RGBA 0x1908 +#define GL_FILL 0x1B02 +#define GL_VENDOR 0x1F00 +#define GL_RENDERER 0x1F01 +#define GL_VERSION 0x1F02 +#define GL_EXTENSIONS 0x1F03 +#define GL_LINEAR 0x2601 +#define GL_TEXTURE_MAG_FILTER 0x2800 +#define GL_TEXTURE_MIN_FILTER 0x2801 +#define GL_TEXTURE_WRAP_S 0x2802 +#define GL_TEXTURE_WRAP_T 0x2803 +#define GL_REPEAT 0x2901 +typedef void (APIENTRYP PFNGLPOLYGONMODEPROC) (GLenum face, GLenum mode); +typedef void (APIENTRYP PFNGLSCISSORPROC) (GLint x, GLint y, GLsizei width, GLsizei height); +typedef void (APIENTRYP PFNGLTEXPARAMETERIPROC) (GLenum target, GLenum pname, GLint param); +typedef void (APIENTRYP PFNGLTEXIMAGE2DPROC) (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels); +typedef void (APIENTRYP PFNGLCLEARPROC) (GLbitfield mask); +typedef void (APIENTRYP PFNGLCLEARCOLORPROC) (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha); +typedef void (APIENTRYP PFNGLDISABLEPROC) (GLenum cap); +typedef void (APIENTRYP PFNGLENABLEPROC) (GLenum cap); +typedef void (APIENTRYP PFNGLFLUSHPROC) (void); +typedef void (APIENTRYP PFNGLPIXELSTOREIPROC) (GLenum pname, GLint param); +typedef void (APIENTRYP PFNGLREADPIXELSPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels); +typedef GLenum (APIENTRYP PFNGLGETERRORPROC) (void); +typedef void (APIENTRYP PFNGLGETINTEGERVPROC) (GLenum pname, GLint *data); +typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGPROC) (GLenum name); +typedef GLboolean (APIENTRYP PFNGLISENABLEDPROC) (GLenum cap); +typedef void (APIENTRYP PFNGLVIEWPORTPROC) (GLint x, GLint y, GLsizei width, GLsizei height); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glPolygonMode (GLenum face, GLenum mode); +GLAPI void APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height); +GLAPI void APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param); +GLAPI void APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels); +GLAPI void APIENTRY glClear (GLbitfield mask); +GLAPI void APIENTRY glClearColor (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha); +GLAPI void APIENTRY glDisable (GLenum cap); +GLAPI void APIENTRY glEnable (GLenum cap); +GLAPI void APIENTRY glFlush (void); +GLAPI void APIENTRY glPixelStorei (GLenum pname, GLint param); +GLAPI void APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void *pixels); +GLAPI GLenum APIENTRY glGetError (void); +GLAPI void APIENTRY glGetIntegerv (GLenum pname, GLint *data); +GLAPI const GLubyte *APIENTRY glGetString (GLenum name); +GLAPI GLboolean APIENTRY glIsEnabled (GLenum cap); +GLAPI void APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height); +#endif +#endif /* GL_VERSION_1_0 */ +#ifndef GL_VERSION_1_1 +typedef khronos_float_t GLclampf; +typedef double GLclampd; +#define GL_TEXTURE_BINDING_2D 0x8069 +typedef void (APIENTRYP PFNGLDRAWELEMENTSPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices); +typedef void (APIENTRYP PFNGLTEXSUBIMAGE2DPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels); +typedef void (APIENTRYP PFNGLBINDTEXTUREPROC) (GLenum target, GLuint texture); +typedef void (APIENTRYP PFNGLDELETETEXTURESPROC) (GLsizei n, const GLuint *textures); +typedef void (APIENTRYP PFNGLGENTEXTURESPROC) (GLsizei n, GLuint *textures); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const void *indices); +GLAPI void APIENTRY glTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels); +GLAPI void APIENTRY glBindTexture (GLenum target, GLuint texture); +GLAPI void APIENTRY glDeleteTextures (GLsizei n, const GLuint *textures); +GLAPI void APIENTRY glGenTextures (GLsizei n, GLuint *textures); +#endif +#endif /* GL_VERSION_1_1 */ +#ifndef GL_VERSION_1_2 +#define GL_CLAMP_TO_EDGE 0x812F +#endif /* GL_VERSION_1_2 */ +#ifndef GL_VERSION_1_3 +#define GL_TEXTURE0 0x84C0 +#define GL_ACTIVE_TEXTURE 0x84E0 +typedef void (APIENTRYP PFNGLACTIVETEXTUREPROC) (GLenum texture); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glActiveTexture (GLenum texture); +#endif +#endif /* GL_VERSION_1_3 */ +#ifndef GL_VERSION_1_4 +#define GL_BLEND_DST_RGB 0x80C8 +#define GL_BLEND_SRC_RGB 0x80C9 +#define GL_BLEND_DST_ALPHA 0x80CA +#define GL_BLEND_SRC_ALPHA 0x80CB +#define GL_FUNC_ADD 0x8006 +typedef void (APIENTRYP PFNGLBLENDFUNCSEPARATEPROC) (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha); +typedef void (APIENTRYP PFNGLBLENDEQUATIONPROC) (GLenum mode); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glBlendFuncSeparate (GLenum sfactorRGB, GLenum dfactorRGB, GLenum sfactorAlpha, GLenum dfactorAlpha); +GLAPI void APIENTRY glBlendEquation (GLenum mode); +#endif +#endif /* GL_VERSION_1_4 */ +#ifndef GL_VERSION_1_5 +typedef khronos_ssize_t GLsizeiptr; +typedef khronos_intptr_t GLintptr; +#define GL_ARRAY_BUFFER 0x8892 +#define GL_ELEMENT_ARRAY_BUFFER 0x8893 +#define GL_ARRAY_BUFFER_BINDING 0x8894 +#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895 +#define GL_STREAM_DRAW 0x88E0 +typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer); +typedef void (APIENTRYP PFNGLDELETEBUFFERSPROC) (GLsizei n, const GLuint *buffers); +typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers); +typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const void *data, GLenum usage); +typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const void *data); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glBindBuffer (GLenum target, GLuint buffer); +GLAPI void APIENTRY glDeleteBuffers (GLsizei n, const GLuint *buffers); +GLAPI void APIENTRY glGenBuffers (GLsizei n, GLuint *buffers); +GLAPI void APIENTRY glBufferData (GLenum target, GLsizeiptr size, const void *data, GLenum usage); +GLAPI void APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const void *data); +#endif +#endif /* GL_VERSION_1_5 */ +#ifndef GL_VERSION_2_0 +typedef char GLchar; +typedef khronos_int16_t GLshort; +typedef khronos_int8_t GLbyte; +typedef khronos_uint16_t GLushort; +#define GL_BLEND_EQUATION_RGB 0x8009 +#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622 +#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623 +#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624 +#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625 +#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645 +#define GL_BLEND_EQUATION_ALPHA 0x883D +#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A +#define GL_FRAGMENT_SHADER 0x8B30 +#define GL_VERTEX_SHADER 0x8B31 +#define GL_COMPILE_STATUS 0x8B81 +#define GL_LINK_STATUS 0x8B82 +#define GL_INFO_LOG_LENGTH 0x8B84 +#define GL_CURRENT_PROGRAM 0x8B8D +#define GL_UPPER_LEFT 0x8CA2 +typedef void (APIENTRYP PFNGLBLENDEQUATIONSEPARATEPROC) (GLenum modeRGB, GLenum modeAlpha); +typedef void (APIENTRYP PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader); +typedef void (APIENTRYP PFNGLCOMPILESHADERPROC) (GLuint shader); +typedef GLuint (APIENTRYP PFNGLCREATEPROGRAMPROC) (void); +typedef GLuint (APIENTRYP PFNGLCREATESHADERPROC) (GLenum type); +typedef void (APIENTRYP PFNGLDELETEPROGRAMPROC) (GLuint program); +typedef void (APIENTRYP PFNGLDELETESHADERPROC) (GLuint shader); +typedef void (APIENTRYP PFNGLDETACHSHADERPROC) (GLuint program, GLuint shader); +typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYPROC) (GLuint index); +typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYPROC) (GLuint index); +typedef GLint (APIENTRYP PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const GLchar *name); +typedef void (APIENTRYP PFNGLGETPROGRAMIVPROC) (GLuint program, GLenum pname, GLint *params); +typedef void (APIENTRYP PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog); +typedef void (APIENTRYP PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params); +typedef void (APIENTRYP PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog); +typedef GLint (APIENTRYP PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const GLchar *name); +typedef void (APIENTRYP PFNGLGETVERTEXATTRIBIVPROC) (GLuint index, GLenum pname, GLint *params); +typedef void (APIENTRYP PFNGLGETVERTEXATTRIBPOINTERVPROC) (GLuint index, GLenum pname, void **pointer); +typedef GLboolean (APIENTRYP PFNGLISPROGRAMPROC) (GLuint program); +typedef void (APIENTRYP PFNGLLINKPROGRAMPROC) (GLuint program); +typedef void (APIENTRYP PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length); +typedef void (APIENTRYP PFNGLUSEPROGRAMPROC) (GLuint program); +typedef void (APIENTRYP PFNGLUNIFORM1IPROC) (GLint location, GLint v0); +typedef void (APIENTRYP PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); +typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha); +GLAPI void APIENTRY glAttachShader (GLuint program, GLuint shader); +GLAPI void APIENTRY glCompileShader (GLuint shader); +GLAPI GLuint APIENTRY glCreateProgram (void); +GLAPI GLuint APIENTRY glCreateShader (GLenum type); +GLAPI void APIENTRY glDeleteProgram (GLuint program); +GLAPI void APIENTRY glDeleteShader (GLuint shader); +GLAPI void APIENTRY glDetachShader (GLuint program, GLuint shader); +GLAPI void APIENTRY glDisableVertexAttribArray (GLuint index); +GLAPI void APIENTRY glEnableVertexAttribArray (GLuint index); +GLAPI GLint APIENTRY glGetAttribLocation (GLuint program, const GLchar *name); +GLAPI void APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint *params); +GLAPI void APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufSize, GLsizei *length, GLchar *infoLog); +GLAPI void APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint *params); +GLAPI void APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog); +GLAPI GLint APIENTRY glGetUniformLocation (GLuint program, const GLchar *name); +GLAPI void APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint *params); +GLAPI void APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, void **pointer); +GLAPI GLboolean APIENTRY glIsProgram (GLuint program); +GLAPI void APIENTRY glLinkProgram (GLuint program); +GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar *const*string, const GLint *length); +GLAPI void APIENTRY glUseProgram (GLuint program); +GLAPI void APIENTRY glUniform1i (GLint location, GLint v0); +GLAPI void APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value); +GLAPI void APIENTRY glVertexAttribPointer (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void *pointer); +#endif +#endif /* GL_VERSION_2_0 */ +#ifndef GL_VERSION_2_1 +#define GL_PIXEL_UNPACK_BUFFER 0x88EC +#define GL_PIXEL_UNPACK_BUFFER_BINDING 0x88EF +#endif /* GL_VERSION_2_1 */ +#ifndef GL_VERSION_3_0 +typedef khronos_uint16_t GLhalf; +#define GL_MAJOR_VERSION 0x821B +#define GL_MINOR_VERSION 0x821C +#define GL_NUM_EXTENSIONS 0x821D +#define GL_FRAMEBUFFER_SRGB 0x8DB9 +#define GL_VERTEX_ARRAY_BINDING 0x85B5 +typedef void (APIENTRYP PFNGLGETBOOLEANI_VPROC) (GLenum target, GLuint index, GLboolean *data); +typedef void (APIENTRYP PFNGLGETINTEGERI_VPROC) (GLenum target, GLuint index, GLint *data); +typedef const GLubyte *(APIENTRYP PFNGLGETSTRINGIPROC) (GLenum name, GLuint index); +typedef void (APIENTRYP PFNGLBINDVERTEXARRAYPROC) (GLuint array); +typedef void (APIENTRYP PFNGLDELETEVERTEXARRAYSPROC) (GLsizei n, const GLuint *arrays); +typedef void (APIENTRYP PFNGLGENVERTEXARRAYSPROC) (GLsizei n, GLuint *arrays); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI const GLubyte *APIENTRY glGetStringi (GLenum name, GLuint index); +GLAPI void APIENTRY glBindVertexArray (GLuint array); +GLAPI void APIENTRY glDeleteVertexArrays (GLsizei n, const GLuint *arrays); +GLAPI void APIENTRY glGenVertexArrays (GLsizei n, GLuint *arrays); +#endif +#endif /* GL_VERSION_3_0 */ +#ifndef GL_VERSION_3_1 +#define GL_VERSION_3_1 1 +#define GL_PRIMITIVE_RESTART 0x8F9D +#endif /* GL_VERSION_3_1 */ +#ifndef GL_VERSION_3_2 +#define GL_VERSION_3_2 1 +typedef struct __GLsync *GLsync; +typedef khronos_uint64_t GLuint64; +typedef khronos_int64_t GLint64; +#define GL_CONTEXT_COMPATIBILITY_PROFILE_BIT 0x00000002 +#define GL_CONTEXT_PROFILE_MASK 0x9126 +typedef void (APIENTRYP PFNGLDRAWELEMENTSBASEVERTEXPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex); +typedef void (APIENTRYP PFNGLGETINTEGER64I_VPROC) (GLenum target, GLuint index, GLint64 *data); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glDrawElementsBaseVertex (GLenum mode, GLsizei count, GLenum type, const void *indices, GLint basevertex); +#endif +#endif /* GL_VERSION_3_2 */ +#ifndef GL_VERSION_3_3 +#define GL_VERSION_3_3 1 +#define GL_SAMPLER_BINDING 0x8919 +typedef void (APIENTRYP PFNGLBINDSAMPLERPROC) (GLuint unit, GLuint sampler); +#ifdef GL_GLEXT_PROTOTYPES +GLAPI void APIENTRY glBindSampler (GLuint unit, GLuint sampler); +#endif +#endif /* GL_VERSION_3_3 */ +#ifndef GL_VERSION_4_1 +typedef void (APIENTRYP PFNGLGETFLOATI_VPROC) (GLenum target, GLuint index, GLfloat *data); +typedef void (APIENTRYP PFNGLGETDOUBLEI_VPROC) (GLenum target, GLuint index, GLdouble *data); +#endif /* GL_VERSION_4_1 */ +#ifndef GL_VERSION_4_3 +typedef void (APIENTRY *GLDEBUGPROC)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam); +#endif /* GL_VERSION_4_3 */ +#ifndef GL_VERSION_4_5 +#define GL_CLIP_ORIGIN 0x935C +typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint *param); +typedef void (APIENTRYP PFNGLGETTRANSFORMFEEDBACKI64_VPROC) (GLuint xfb, GLenum pname, GLuint index, GLint64 *param); +#endif /* GL_VERSION_4_5 */ +#ifndef GL_ARB_bindless_texture +typedef khronos_uint64_t GLuint64EXT; +#endif /* GL_ARB_bindless_texture */ +#ifndef GL_ARB_cl_event +struct _cl_context; +struct _cl_event; +#endif /* GL_ARB_cl_event */ +#ifndef GL_ARB_clip_control +#define GL_ARB_clip_control 1 +#endif /* GL_ARB_clip_control */ +#ifndef GL_ARB_debug_output +typedef void (APIENTRY *GLDEBUGPROCARB)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const void *userParam); +#endif /* GL_ARB_debug_output */ +#ifndef GL_EXT_EGL_image_storage +typedef void *GLeglImageOES; +#endif /* GL_EXT_EGL_image_storage */ +#ifndef GL_EXT_direct_state_access +typedef void (APIENTRYP PFNGLGETFLOATI_VEXTPROC) (GLenum pname, GLuint index, GLfloat *params); +typedef void (APIENTRYP PFNGLGETDOUBLEI_VEXTPROC) (GLenum pname, GLuint index, GLdouble *params); +typedef void (APIENTRYP PFNGLGETPOINTERI_VEXTPROC) (GLenum pname, GLuint index, void **params); +typedef void (APIENTRYP PFNGLGETVERTEXARRAYINTEGERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, GLint *param); +typedef void (APIENTRYP PFNGLGETVERTEXARRAYPOINTERI_VEXTPROC) (GLuint vaobj, GLuint index, GLenum pname, void **param); +#endif /* GL_EXT_direct_state_access */ +#ifndef GL_NV_draw_vulkan_image +typedef void (APIENTRY *GLVULKANPROCNV)(void); +#endif /* GL_NV_draw_vulkan_image */ +#ifndef GL_NV_gpu_shader5 +typedef khronos_int64_t GLint64EXT; +#endif /* GL_NV_gpu_shader5 */ +#ifndef GL_NV_vertex_buffer_unified_memory +typedef void (APIENTRYP PFNGLGETINTEGERUI64I_VNVPROC) (GLenum value, GLuint index, GLuint64EXT *result); +#endif /* GL_NV_vertex_buffer_unified_memory */ +#ifdef __cplusplus +} +#endif +#endif + +#ifndef GL3W_API +#define GL3W_API +#endif + +#ifndef __gl_h_ +#define __gl_h_ +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#define GL3W_OK 0 +#define GL3W_ERROR_INIT -1 +#define GL3W_ERROR_LIBRARY_OPEN -2 +#define GL3W_ERROR_OPENGL_VERSION -3 + +typedef void (*GL3WglProc)(void); +typedef GL3WglProc (*GL3WGetProcAddressProc)(const char *proc); + +/* gl3w api */ +GL3W_API int imgl3wInit(void); +GL3W_API int imgl3wInit2(GL3WGetProcAddressProc proc); +GL3W_API int imgl3wIsSupported(int major, int minor); +GL3W_API GL3WglProc imgl3wGetProcAddress(const char *proc); + +/* gl3w internal state */ +union ImGL3WProcs { + GL3WglProc ptr[60]; + struct { + PFNGLACTIVETEXTUREPROC ActiveTexture; + PFNGLATTACHSHADERPROC AttachShader; + PFNGLBINDBUFFERPROC BindBuffer; + PFNGLBINDSAMPLERPROC BindSampler; + PFNGLBINDTEXTUREPROC BindTexture; + PFNGLBINDVERTEXARRAYPROC BindVertexArray; + PFNGLBLENDEQUATIONPROC BlendEquation; + PFNGLBLENDEQUATIONSEPARATEPROC BlendEquationSeparate; + PFNGLBLENDFUNCSEPARATEPROC BlendFuncSeparate; + PFNGLBUFFERDATAPROC BufferData; + PFNGLBUFFERSUBDATAPROC BufferSubData; + PFNGLCLEARPROC Clear; + PFNGLCLEARCOLORPROC ClearColor; + PFNGLCOMPILESHADERPROC CompileShader; + PFNGLCREATEPROGRAMPROC CreateProgram; + PFNGLCREATESHADERPROC CreateShader; + PFNGLDELETEBUFFERSPROC DeleteBuffers; + PFNGLDELETEPROGRAMPROC DeleteProgram; + PFNGLDELETESHADERPROC DeleteShader; + PFNGLDELETETEXTURESPROC DeleteTextures; + PFNGLDELETEVERTEXARRAYSPROC DeleteVertexArrays; + PFNGLDETACHSHADERPROC DetachShader; + PFNGLDISABLEPROC Disable; + PFNGLDISABLEVERTEXATTRIBARRAYPROC DisableVertexAttribArray; + PFNGLDRAWELEMENTSPROC DrawElements; + PFNGLDRAWELEMENTSBASEVERTEXPROC DrawElementsBaseVertex; + PFNGLENABLEPROC Enable; + PFNGLENABLEVERTEXATTRIBARRAYPROC EnableVertexAttribArray; + PFNGLFLUSHPROC Flush; + PFNGLGENBUFFERSPROC GenBuffers; + PFNGLGENTEXTURESPROC GenTextures; + PFNGLGENVERTEXARRAYSPROC GenVertexArrays; + PFNGLGETATTRIBLOCATIONPROC GetAttribLocation; + PFNGLGETERRORPROC GetError; + PFNGLGETINTEGERVPROC GetIntegerv; + PFNGLGETPROGRAMINFOLOGPROC GetProgramInfoLog; + PFNGLGETPROGRAMIVPROC GetProgramiv; + PFNGLGETSHADERINFOLOGPROC GetShaderInfoLog; + PFNGLGETSHADERIVPROC GetShaderiv; + PFNGLGETSTRINGPROC GetString; + PFNGLGETSTRINGIPROC GetStringi; + PFNGLGETUNIFORMLOCATIONPROC GetUniformLocation; + PFNGLGETVERTEXATTRIBPOINTERVPROC GetVertexAttribPointerv; + PFNGLGETVERTEXATTRIBIVPROC GetVertexAttribiv; + PFNGLISENABLEDPROC IsEnabled; + PFNGLISPROGRAMPROC IsProgram; + PFNGLLINKPROGRAMPROC LinkProgram; + PFNGLPIXELSTOREIPROC PixelStorei; + PFNGLPOLYGONMODEPROC PolygonMode; + PFNGLREADPIXELSPROC ReadPixels; + PFNGLSCISSORPROC Scissor; + PFNGLSHADERSOURCEPROC ShaderSource; + PFNGLTEXIMAGE2DPROC TexImage2D; + PFNGLTEXPARAMETERIPROC TexParameteri; + PFNGLTEXSUBIMAGE2DPROC TexSubImage2D; + PFNGLUNIFORM1IPROC Uniform1i; + PFNGLUNIFORMMATRIX4FVPROC UniformMatrix4fv; + PFNGLUSEPROGRAMPROC UseProgram; + PFNGLVERTEXATTRIBPOINTERPROC VertexAttribPointer; + PFNGLVIEWPORTPROC Viewport; + } gl; +}; + +GL3W_API extern union ImGL3WProcs imgl3wProcs; + +/* OpenGL functions */ +#define glActiveTexture imgl3wProcs.gl.ActiveTexture +#define glAttachShader imgl3wProcs.gl.AttachShader +#define glBindBuffer imgl3wProcs.gl.BindBuffer +#define glBindSampler imgl3wProcs.gl.BindSampler +#define glBindTexture imgl3wProcs.gl.BindTexture +#define glBindVertexArray imgl3wProcs.gl.BindVertexArray +#define glBlendEquation imgl3wProcs.gl.BlendEquation +#define glBlendEquationSeparate imgl3wProcs.gl.BlendEquationSeparate +#define glBlendFuncSeparate imgl3wProcs.gl.BlendFuncSeparate +#define glBufferData imgl3wProcs.gl.BufferData +#define glBufferSubData imgl3wProcs.gl.BufferSubData +#define glClear imgl3wProcs.gl.Clear +#define glClearColor imgl3wProcs.gl.ClearColor +#define glCompileShader imgl3wProcs.gl.CompileShader +#define glCreateProgram imgl3wProcs.gl.CreateProgram +#define glCreateShader imgl3wProcs.gl.CreateShader +#define glDeleteBuffers imgl3wProcs.gl.DeleteBuffers +#define glDeleteProgram imgl3wProcs.gl.DeleteProgram +#define glDeleteShader imgl3wProcs.gl.DeleteShader +#define glDeleteTextures imgl3wProcs.gl.DeleteTextures +#define glDeleteVertexArrays imgl3wProcs.gl.DeleteVertexArrays +#define glDetachShader imgl3wProcs.gl.DetachShader +#define glDisable imgl3wProcs.gl.Disable +#define glDisableVertexAttribArray imgl3wProcs.gl.DisableVertexAttribArray +#define glDrawElements imgl3wProcs.gl.DrawElements +#define glDrawElementsBaseVertex imgl3wProcs.gl.DrawElementsBaseVertex +#define glEnable imgl3wProcs.gl.Enable +#define glEnableVertexAttribArray imgl3wProcs.gl.EnableVertexAttribArray +#define glFlush imgl3wProcs.gl.Flush +#define glGenBuffers imgl3wProcs.gl.GenBuffers +#define glGenTextures imgl3wProcs.gl.GenTextures +#define glGenVertexArrays imgl3wProcs.gl.GenVertexArrays +#define glGetAttribLocation imgl3wProcs.gl.GetAttribLocation +#define glGetError imgl3wProcs.gl.GetError +#define glGetIntegerv imgl3wProcs.gl.GetIntegerv +#define glGetProgramInfoLog imgl3wProcs.gl.GetProgramInfoLog +#define glGetProgramiv imgl3wProcs.gl.GetProgramiv +#define glGetShaderInfoLog imgl3wProcs.gl.GetShaderInfoLog +#define glGetShaderiv imgl3wProcs.gl.GetShaderiv +#define glGetString imgl3wProcs.gl.GetString +#define glGetStringi imgl3wProcs.gl.GetStringi +#define glGetUniformLocation imgl3wProcs.gl.GetUniformLocation +#define glGetVertexAttribPointerv imgl3wProcs.gl.GetVertexAttribPointerv +#define glGetVertexAttribiv imgl3wProcs.gl.GetVertexAttribiv +#define glIsEnabled imgl3wProcs.gl.IsEnabled +#define glIsProgram imgl3wProcs.gl.IsProgram +#define glLinkProgram imgl3wProcs.gl.LinkProgram +#define glPixelStorei imgl3wProcs.gl.PixelStorei +#define glPolygonMode imgl3wProcs.gl.PolygonMode +#define glReadPixels imgl3wProcs.gl.ReadPixels +#define glScissor imgl3wProcs.gl.Scissor +#define glShaderSource imgl3wProcs.gl.ShaderSource +#define glTexImage2D imgl3wProcs.gl.TexImage2D +#define glTexParameteri imgl3wProcs.gl.TexParameteri +#define glTexSubImage2D imgl3wProcs.gl.TexSubImage2D +#define glUniform1i imgl3wProcs.gl.Uniform1i +#define glUniformMatrix4fv imgl3wProcs.gl.UniformMatrix4fv +#define glUseProgram imgl3wProcs.gl.UseProgram +#define glVertexAttribPointer imgl3wProcs.gl.VertexAttribPointer +#define glViewport imgl3wProcs.gl.Viewport + +#ifdef __cplusplus +} +#endif + +#endif + +#ifdef IMGL3W_IMPL +#ifdef __cplusplus +extern "C" { +#endif + +#include + +#define GL3W_ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) + +#if defined(_WIN32) +#ifndef WIN32_LEAN_AND_MEAN +#define WIN32_LEAN_AND_MEAN 1 +#endif +#include + +static HMODULE libgl; +typedef PROC(__stdcall* GL3WglGetProcAddr)(LPCSTR); +static GL3WglGetProcAddr wgl_get_proc_address; + +static int open_libgl(void) +{ + libgl = LoadLibraryA("opengl32.dll"); + if (!libgl) + return GL3W_ERROR_LIBRARY_OPEN; + wgl_get_proc_address = (GL3WglGetProcAddr)GetProcAddress(libgl, "wglGetProcAddress"); + return GL3W_OK; +} + +static void close_libgl(void) { FreeLibrary(libgl); } +static GL3WglProc get_proc(const char *proc) +{ + GL3WglProc res; + res = (GL3WglProc)wgl_get_proc_address(proc); + if (!res) + res = (GL3WglProc)GetProcAddress(libgl, proc); + return res; +} +#elif defined(__APPLE__) +#include + +static void *libgl; +static int open_libgl(void) +{ + libgl = dlopen("/System/Library/Frameworks/OpenGL.framework/OpenGL", RTLD_LAZY | RTLD_LOCAL); + if (!libgl) + return GL3W_ERROR_LIBRARY_OPEN; + return GL3W_OK; +} + +static void close_libgl(void) { dlclose(libgl); } + +static GL3WglProc get_proc(const char *proc) +{ + GL3WglProc res; + *(void **)(&res) = dlsym(libgl, proc); + return res; +} +#else +#include + +static void* libgl; // OpenGL library +static void* libglx; // GLX library +static void* libegl; // EGL library +static GL3WGetProcAddressProc gl_get_proc_address; + +static void close_libgl(void) +{ + if (libgl) { + dlclose(libgl); + libgl = NULL; + } + if (libegl) { + dlclose(libegl); + libegl = NULL; + } + if (libglx) { + dlclose(libglx); + libglx = NULL; + } +} + +static int is_library_loaded(const char* name, void** lib) +{ + *lib = dlopen(name, RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD); + return *lib != NULL; +} + +static int open_libs(void) +{ + // On Linux we have two APIs to get process addresses: EGL and GLX. + // EGL is supported under both X11 and Wayland, whereas GLX is X11-specific. + + libgl = NULL; + libegl = NULL; + libglx = NULL; + + // First check what's already loaded, the windowing library might have + // already loaded either EGL or GLX and we want to use the same one. + + if (is_library_loaded("libEGL.so.1", &libegl) || + is_library_loaded("libGLX.so.0", &libglx)) { + libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL); + if (libgl) + return GL3W_OK; + else + close_libgl(); + } + + if (is_library_loaded("libGL.so", &libgl)) + return GL3W_OK; + if (is_library_loaded("libGL.so.1", &libgl)) + return GL3W_OK; + if (is_library_loaded("libGL.so.3", &libgl)) + return GL3W_OK; + + // Neither is already loaded, so we have to load one. Try EGL first + // because it is supported under both X11 and Wayland. + + // Load OpenGL + EGL + libgl = dlopen("libOpenGL.so.0", RTLD_LAZY | RTLD_LOCAL); + libegl = dlopen("libEGL.so.1", RTLD_LAZY | RTLD_LOCAL); + if (libgl && libegl) + return GL3W_OK; + else + close_libgl(); + + // Fall back to legacy libGL, which includes GLX + // While most systems use libGL.so.1, NetBSD seems to use that libGL.so.3. See https://github.com/ocornut/imgui/issues/6983 + libgl = dlopen("libGL.so", RTLD_LAZY | RTLD_LOCAL); + if (!libgl) + libgl = dlopen("libGL.so.1", RTLD_LAZY | RTLD_LOCAL); + if (!libgl) + libgl = dlopen("libGL.so.3", RTLD_LAZY | RTLD_LOCAL); + + if (libgl) + return GL3W_OK; + + return GL3W_ERROR_LIBRARY_OPEN; +} + +static int open_libgl(void) +{ + int res = open_libs(); + if (res) + return res; + + if (libegl) + *(void**)(&gl_get_proc_address) = dlsym(libegl, "eglGetProcAddress"); + else if (libglx) + *(void**)(&gl_get_proc_address) = dlsym(libglx, "glXGetProcAddressARB"); + else + *(void**)(&gl_get_proc_address) = dlsym(libgl, "glXGetProcAddressARB"); + + if (!gl_get_proc_address) { + close_libgl(); + return GL3W_ERROR_LIBRARY_OPEN; + } + + return GL3W_OK; +} + +static GL3WglProc get_proc(const char* proc) +{ + GL3WglProc res = NULL; + + // Before EGL version 1.5, eglGetProcAddress doesn't support querying core + // functions and may return a dummy function if we try, so try to load the + // function from the GL library directly first. + if (libegl) + *(void**)(&res) = dlsym(libgl, proc); + + if (!res) + res = gl_get_proc_address(proc); + + if (!libegl && !res) + *(void**)(&res) = dlsym(libgl, proc); + + return res; +} +#endif + +static struct { int major, minor; } version; + +static int parse_version(void) +{ + if (!glGetIntegerv) + return GL3W_ERROR_INIT; + glGetIntegerv(GL_MAJOR_VERSION, &version.major); + glGetIntegerv(GL_MINOR_VERSION, &version.minor); + if (version.major == 0 && version.minor == 0) + { + // Query GL_VERSION in desktop GL 2.x, the string will start with "." + if (const char* gl_version = (const char*)glGetString(GL_VERSION)) + sscanf(gl_version, "%d.%d", &version.major, &version.minor); + } + if (version.major < 2) + return GL3W_ERROR_OPENGL_VERSION; + return GL3W_OK; +} + +static void load_procs(GL3WGetProcAddressProc proc); + +int imgl3wInit(void) +{ + int res = open_libgl(); + if (res) + return res; + atexit(close_libgl); + return imgl3wInit2(get_proc); +} + +int imgl3wInit2(GL3WGetProcAddressProc proc) +{ + load_procs(proc); + return parse_version(); +} + +int imgl3wIsSupported(int major, int minor) +{ + if (major < 2) + return 0; + if (version.major == major) + return version.minor >= minor; + return version.major >= major; +} + +GL3WglProc imgl3wGetProcAddress(const char *proc) { return get_proc(proc); } + +static const char *proc_names[] = { + "glActiveTexture", + "glAttachShader", + "glBindBuffer", + "glBindSampler", + "glBindTexture", + "glBindVertexArray", + "glBlendEquation", + "glBlendEquationSeparate", + "glBlendFuncSeparate", + "glBufferData", + "glBufferSubData", + "glClear", + "glClearColor", + "glCompileShader", + "glCreateProgram", + "glCreateShader", + "glDeleteBuffers", + "glDeleteProgram", + "glDeleteShader", + "glDeleteTextures", + "glDeleteVertexArrays", + "glDetachShader", + "glDisable", + "glDisableVertexAttribArray", + "glDrawElements", + "glDrawElementsBaseVertex", + "glEnable", + "glEnableVertexAttribArray", + "glFlush", + "glGenBuffers", + "glGenTextures", + "glGenVertexArrays", + "glGetAttribLocation", + "glGetError", + "glGetIntegerv", + "glGetProgramInfoLog", + "glGetProgramiv", + "glGetShaderInfoLog", + "glGetShaderiv", + "glGetString", + "glGetStringi", + "glGetUniformLocation", + "glGetVertexAttribPointerv", + "glGetVertexAttribiv", + "glIsEnabled", + "glIsProgram", + "glLinkProgram", + "glPixelStorei", + "glPolygonMode", + "glReadPixels", + "glScissor", + "glShaderSource", + "glTexImage2D", + "glTexParameteri", + "glTexSubImage2D", + "glUniform1i", + "glUniformMatrix4fv", + "glUseProgram", + "glVertexAttribPointer", + "glViewport", +}; + +GL3W_API union ImGL3WProcs imgl3wProcs; + +static void load_procs(GL3WGetProcAddressProc proc) +{ + size_t i; + for (i = 0; i < GL3W_ARRAY_SIZE(proc_names); i++) + imgl3wProcs.ptr[i] = proc(proc_names[i]); +} + +#ifdef __cplusplus +} +#endif +#endif diff --git a/modules/ui/private/gl/ui.cpp b/modules/ui/private/gl/ui.cpp index b668491..a04238d 100644 --- a/modules/ui/private/gl/ui.cpp +++ b/modules/ui/private/gl/ui.cpp @@ -1,9 +1,9 @@ #include -#include -#include #include #include +#include #include +#include namespace lt { diff --git a/modules/ui/private/glfw/glfw.cpp b/modules/ui/private/glfw/glfw.cpp new file mode 100644 index 0000000..4686073 --- /dev/null +++ b/modules/ui/private/glfw/glfw.cpp @@ -0,0 +1,1547 @@ +// clang-format off +// dear imgui: Platform Backend for GLFW +// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..) +// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.) +// (Requires: GLFW 3.1+. Prefer GLFW 3.3+ or GLFW 3.4+ for full feature support.) + +// Implemented features: +// [X] Platform: Clipboard support. +// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen (Windows only). +// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values are obsolete since 1.87 and not supported since 1.91.5] +// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. +// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Resizing cursors requires GLFW 3.4+! Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. +// [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'. +// [X] Multiple Dear ImGui contexts support. +// Missing features or Issues: +// [ ] Touch events are only correctly identified as Touch on Windows. This create issues with some interactions. GLFW doesn't provide a way to identify touch inputs from mouse inputs, we cannot call io.AddMouseSourceEvent() to identify the source. We provide a Windows-specific workaround. +// [ ] Missing ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress cursors. +// [ ] Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor). + +// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. +// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need. +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +// About Emscripten support: +// - Emscripten provides its own GLFW (3.2.1) implementation (syntax: "-sUSE_GLFW=3"), but Joystick is broken and several features are not supported (multiple windows, clipboard, timer, etc.) +// - A third-party Emscripten GLFW (3.4.0) implementation (syntax: "--use-port=contrib.glfw3") fixes the Joystick issue and implements all relevant features for the browser. +// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Comparison.md for details. + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2025-XX-XX: Platform: Added support for multiple windows via the ImGuiPlatformIO interface. +// 2025-06-18: Added support for multiple Dear ImGui contexts. (#8676, #8239, #8069) +// 2025-06-11: Added ImGui_ImplGlfw_GetContentScaleForWindow(GLFWwindow* window) and ImGui_ImplGlfw_GetContentScaleForMonitor(GLFWmonitor* monitor) helper to facilitate making DPI-aware apps. +// 2025-05-15: [Docking] Add Platform_GetWindowFramebufferScale() handler, to allow varying Retina display density on multiple monitors. +// 2025-04-26: [Docking] Disable multi-viewports under Wayland. (#8587) +// 2025-03-10: Map GLFW_KEY_WORLD_1 and GLFW_KEY_WORLD_2 into ImGuiKey_Oem102. +// 2025-03-03: Fixed clipboard handler assertion when using GLFW <= 3.2.1 compiled with asserts enabled. +// 2025-02-21: [Docking] Update monitors and work areas information every frame, as the later may change regardless of monitor changes. (#8415) +// 2024-11-05: [Docking] Added Linux workaround for spurious mouse up events emitted while dragging and creating new viewport. (#3158, #7733, #7922) +// 2024-08-22: Moved some OS/backend related function pointers from ImGuiIO to ImGuiPlatformIO: +// - io.GetClipboardTextFn -> platform_io.Platform_GetClipboardTextFn +// - io.SetClipboardTextFn -> platform_io.Platform_SetClipboardTextFn +// - io.PlatformOpenInShellFn -> platform_io.Platform_OpenInShellFn +// 2024-07-31: Added ImGui_ImplGlfw_Sleep() helper function for usage by our examples app, since GLFW doesn't provide one. +// 2024-07-08: *BREAKING* Renamed ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback to ImGui_ImplGlfw_InstallEmscriptenCallbacks(), added GLFWWindow* parameter. +// 2024-07-08: Emscripten: Added support for GLFW3 contrib port (GLFW 3.4.0 features + bug fixes): to enable, replace -sUSE_GLFW=3 with --use-port=contrib.glfw3 (requires emscripten 3.1.59+) (https://github.com/pongasoft/emscripten-glfw) +// 2024-07-02: Emscripten: Added io.PlatformOpenInShellFn() handler for Emscripten versions. +// 2023-12-19: Emscripten: Added ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback() to register canvas selector and auto-resize GLFW window. +// 2023-10-05: Inputs: Added support for extra ImGuiKey values: F13 to F24 function keys. +// 2023-07-18: Inputs: Revert ignoring mouse data on GLFW_CURSOR_DISABLED as it can be used differently. User may set ImGuiConfigFLags_NoMouse if desired. (#5625, #6609) +// 2023-06-12: Accept glfwGetTime() not returning a monotonically increasing value. This seems to happens on some Windows setup when peripherals disconnect, and is likely to also happen on browser + Emscripten. (#6491) +// 2023-04-04: Inputs: Added support for io.AddMouseSourceEvent() to discriminate ImGuiMouseSource_Mouse/ImGuiMouseSource_TouchScreen/ImGuiMouseSource_Pen on Windows ONLY, using a custom WndProc hook. (#2702) +// 2023-03-16: Inputs: Fixed key modifiers handling on secondary viewports (docking branch). Broken on 2023/01/04. (#6248, #6034) +// 2023-03-14: Emscripten: Avoid using glfwGetError() and glfwGetGamepadState() which are not correctly implemented in Emscripten emulation. (#6240) +// 2023-02-03: Emscripten: Registering custom low-level mouse wheel handler to get more accurate scrolling impulses on Emscripten. (#4019, #6096) +// 2023-01-18: Handle unsupported glfwGetVideoMode() call on e.g. Emscripten. +// 2023-01-04: Inputs: Fixed mods state on Linux when using Alt-GR text input (e.g. German keyboard layout), could lead to broken text input. Revert a 2022/01/17 change were we resumed using mods provided by GLFW, turns out they were faulty. +// 2022-11-22: Perform a dummy glfwGetError() read to cancel missing names with glfwGetKeyName(). (#5908) +// 2022-10-18: Perform a dummy glfwGetError() read to cancel missing mouse cursors errors. Using GLFW_VERSION_COMBINED directly. (#5785) +// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11. +// 2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported). +// 2022-09-01: Inputs: Honor GLFW_CURSOR_DISABLED by not setting mouse position *EDIT* Reverted 2023-07-18. +// 2022-04-30: Inputs: Fixed ImGui_ImplGlfw_TranslateUntranslatedKey() for lower case letters on OSX. +// 2022-03-23: Inputs: Fixed a regression in 1.87 which resulted in keyboard modifiers events being reported incorrectly on Linux/X11. +// 2022-02-07: Added ImGui_ImplGlfw_InstallCallbacks()/ImGui_ImplGlfw_RestoreCallbacks() helpers to facilitate user installing callbacks after initializing backend. +// 2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion. +// 2021-01-20: Inputs: calling new io.AddKeyAnalogEvent() for gamepad support, instead of writing directly to io.NavInputs[]. +// 2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+). +// 2022-01-17: Inputs: always update key mods next and before key event (not in NewFrame) to fix input queue with very low framerates. +// 2022-01-12: *BREAKING CHANGE*: Now using glfwSetCursorPosCallback(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetCursorPosCallback() and forward it to the backend via ImGui_ImplGlfw_CursorPosCallback(). +// 2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range. +// 2022-01-05: Inputs: Converting GLFW untranslated keycodes back to translated keycodes (in the ImGui_ImplGlfw_KeyCallback() function) in order to match the behavior of every other backend, and facilitate the use of GLFW with lettered-shortcuts API. +// 2021-08-17: *BREAKING CHANGE*: Now using glfwSetWindowFocusCallback() to calling io.AddFocusEvent(). If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() and forward it to the backend via ImGui_ImplGlfw_WindowFocusCallback(). +// 2021-07-29: *BREAKING CHANGE*: Now using glfwSetCursorEnterCallback(). MousePos is correctly reported when the host platform window is hovered but not focused. If you called ImGui_ImplGlfw_InitXXX() with install_callbacks = false, you MUST install glfwSetWindowFocusCallback() callback and forward it to the backend via ImGui_ImplGlfw_CursorEnterCallback(). +// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). +// 2020-01-17: Inputs: Disable error callback while assigning mouse cursors because some X11 setup don't have them and it generates errors. +// 2019-12-05: Inputs: Added support for new mouse cursors added in GLFW 3.4+ (resizing cursors, not allowed cursor). +// 2019-10-18: Misc: Previously installed user callbacks are now restored on shutdown. +// 2019-07-21: Inputs: Added mapping for ImGuiKey_KeyPadEnter. +// 2019-05-11: Inputs: Don't filter value from character callback before calling AddInputCharacter(). +// 2019-03-12: Misc: Preserve DisplayFramebufferScale when main window is minimized. +// 2018-11-30: Misc: Setting up io.BackendPlatformName so it can be displayed in the About Window. +// 2018-11-07: Inputs: When installing our GLFW callbacks, we save user's previously installed ones - if any - and chain call them. +// 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls. +// 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor. +// 2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples. +// 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag. +// 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()). +// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. +// 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. +// 2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set. +// 2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set). +// 2018-01-20: Inputs: Added Horizontal Mouse Wheel support. +// 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert. +// 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1). +// 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers. + +#include "imgui.h" +#ifndef IMGUI_DISABLE +#include "ui/glfw/glfw.h" + +// Clang warnings with -Weverything +#if defined(__clang__) +#pragma clang diagnostic push +#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast +#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness +#elif defined(__GNUC__) +#pragma GCC diagnostic ignored "-Wfloat-equal" // warning: comparing floating-point with '==' or '!=' is unsafe +#endif + +// GLFW +#include + +#ifdef _WIN32 +#undef APIENTRY +#ifndef GLFW_EXPOSE_NATIVE_WIN32 +#define GLFW_EXPOSE_NATIVE_WIN32 +#endif +#include // for glfwGetWin32Window() +#endif +#ifdef __APPLE__ +#ifndef GLFW_EXPOSE_NATIVE_COCOA +#define GLFW_EXPOSE_NATIVE_COCOA +#endif +#include // for glfwGetCocoaWindow() +#endif +#ifndef _WIN32 +#include // for usleep() +#endif +#include // for snprintf() + +#ifdef __EMSCRIPTEN__ +#include +#include +#ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 +#include +#else +#define EMSCRIPTEN_USE_EMBEDDED_GLFW3 +#endif +#endif + +// We gather version tests as define in order to easily see which features are version-dependent. +#define GLFW_VERSION_COMBINED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 + GLFW_VERSION_REVISION) +#define GLFW_HAS_WINDOW_TOPMOST (GLFW_VERSION_COMBINED >= 3200) // 3.2+ GLFW_FLOATING +#define GLFW_HAS_WINDOW_HOVERED (GLFW_VERSION_COMBINED >= 3300) // 3.3+ GLFW_HOVERED +#define GLFW_HAS_WINDOW_ALPHA (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwSetWindowOpacity +#define GLFW_HAS_PER_MONITOR_DPI (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetMonitorContentScale +#if defined(__EMSCRIPTEN__) || defined(__SWITCH__) // no Vulkan support in GLFW for Emscripten or homebrew Nintendo Switch +#define GLFW_HAS_VULKAN (0) +#else +#define GLFW_HAS_VULKAN (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwCreateWindowSurface +#endif +#define GLFW_HAS_FOCUS_WINDOW (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwFocusWindow +#define GLFW_HAS_FOCUS_ON_SHOW (GLFW_VERSION_COMBINED >= 3300) // 3.3+ GLFW_FOCUS_ON_SHOW +#define GLFW_HAS_MONITOR_WORK_AREA (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetMonitorWorkarea +#define GLFW_HAS_OSX_WINDOW_POS_FIX (GLFW_VERSION_COMBINED >= 3301) // 3.3.1+ Fixed: Resizing window repositions it on MacOS #1553 +#ifdef GLFW_RESIZE_NESW_CURSOR // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2019-11-29 (cursors defines) // FIXME: Remove when GLFW 3.4 is released? +#define GLFW_HAS_NEW_CURSORS (GLFW_VERSION_COMBINED >= 3400) // 3.4+ GLFW_RESIZE_ALL_CURSOR, GLFW_RESIZE_NESW_CURSOR, GLFW_RESIZE_NWSE_CURSOR, GLFW_NOT_ALLOWED_CURSOR +#else +#define GLFW_HAS_NEW_CURSORS (0) +#endif +#ifdef GLFW_MOUSE_PASSTHROUGH // Let's be nice to people who pulled GLFW between 2019-04-16 (3.4 define) and 2020-07-17 (passthrough) +#define GLFW_HAS_MOUSE_PASSTHROUGH (GLFW_VERSION_COMBINED >= 3400) // 3.4+ GLFW_MOUSE_PASSTHROUGH +#else +#define GLFW_HAS_MOUSE_PASSTHROUGH (0) +#endif +#define GLFW_HAS_GAMEPAD_API (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetGamepadState() new api +#define GLFW_HAS_GETKEYNAME (GLFW_VERSION_COMBINED >= 3200) // 3.2+ glfwGetKeyName() +#define GLFW_HAS_GETERROR (GLFW_VERSION_COMBINED >= 3300) // 3.3+ glfwGetError() +#define GLFW_HAS_GETPLATFORM (GLFW_VERSION_COMBINED >= 3400) // 3.4+ glfwGetPlatform() + +// Map GLFWWindow* to ImGuiContext*. +// - Would be simpler if we could use glfwSetWindowUserPointer()/glfwGetWindowUserPointer(), but this is a single and shared resource. +// - Would be simpler if we could use e.g. std::map<> as well. But we don't. +// - This is not particularly optimized as we expect size to be small and queries to be rare. +struct ImGui_ImplGlfw_WindowToContext { GLFWwindow* Window; ImGuiContext* Context; }; +static ImVector g_ContextMap; +static void ImGui_ImplGlfw_ContextMap_Add(GLFWwindow* window, ImGuiContext* ctx) { g_ContextMap.push_back(ImGui_ImplGlfw_WindowToContext{ window, ctx }); } +static void ImGui_ImplGlfw_ContextMap_Remove(GLFWwindow* window) { for (ImGui_ImplGlfw_WindowToContext& entry : g_ContextMap) if (entry.Window == window) { g_ContextMap.erase_unsorted(&entry); return; } } +static ImGuiContext* ImGui_ImplGlfw_ContextMap_Get(GLFWwindow* window) { for (ImGui_ImplGlfw_WindowToContext& entry : g_ContextMap) if (entry.Window == window) return entry.Context; return nullptr; } + +// GLFW data +enum GlfwClientApi +{ + GlfwClientApi_Unknown, + GlfwClientApi_OpenGL, + GlfwClientApi_Vulkan, +}; + +struct ImGui_ImplGlfw_Data +{ + ImGuiContext* Context; + GLFWwindow* Window; + GlfwClientApi ClientApi; + double Time; + GLFWwindow* MouseWindow; + GLFWcursor* MouseCursors[ImGuiMouseCursor_COUNT]; + bool MouseIgnoreButtonUpWaitForFocusLoss; + bool MouseIgnoreButtonUp; + ImVec2 LastValidMousePos; + GLFWwindow* KeyOwnerWindows[GLFW_KEY_LAST]; + bool InstalledCallbacks; + bool CallbacksChainForAllWindows; + char BackendPlatformName[32]; +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 + const char* CanvasSelector; +#endif + + // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. + GLFWwindowfocusfun PrevUserCallbackWindowFocus; + GLFWcursorposfun PrevUserCallbackCursorPos; + GLFWcursorenterfun PrevUserCallbackCursorEnter; + GLFWmousebuttonfun PrevUserCallbackMousebutton; + GLFWscrollfun PrevUserCallbackScroll; + GLFWkeyfun PrevUserCallbackKey; + GLFWcharfun PrevUserCallbackChar; + GLFWmonitorfun PrevUserCallbackMonitor; +#ifdef _WIN32 + WNDPROC PrevWndProc; +#endif + + ImGui_ImplGlfw_Data() { memset((void*)this, 0, sizeof(*this)); } +}; + +// Backend data stored in io.BackendPlatformUserData to allow support for multiple Dear ImGui contexts +// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts. +// FIXME: multi-context support is not well tested and probably dysfunctional in this backend. +// - Because glfwPollEvents() process all windows and some events may be called outside of it, you will need to register your own callbacks +// (passing install_callbacks=false in ImGui_ImplGlfw_InitXXX functions), set the current dear imgui context and then call our callbacks. +// - Otherwise we may need to store a GLFWWindow* -> ImGuiContext* map and handle this in the backend, adding a little bit of extra complexity to it. +// FIXME: some shared resources (mouse cursor shape, gamepad) are mishandled when using multi-context. +namespace ImGui { extern ImGuiIO& GetIO(ImGuiContext*); } +static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData() +{ + // Get data for current context + return ImGui::GetCurrentContext() ? (ImGui_ImplGlfw_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr; +} +static ImGui_ImplGlfw_Data* ImGui_ImplGlfw_GetBackendData(GLFWwindow* window) +{ + // Get data for a given GLFW window, regardless of current context (since GLFW events are sent together) + ImGuiContext* ctx = ImGui_ImplGlfw_ContextMap_Get(window); + return (ImGui_ImplGlfw_Data*)ImGui::GetIO(ctx).BackendPlatformUserData; +} + +// Forward Declarations +static void ImGui_ImplGlfw_UpdateMonitors(); +static void ImGui_ImplGlfw_InitMultiViewportSupport(); +static void ImGui_ImplGlfw_ShutdownMultiViewportSupport(); + +// Functions + +// Not static to allow third-party code to use that if they want to (but undocumented) +ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int keycode, int scancode); +ImGuiKey ImGui_ImplGlfw_KeyToImGuiKey(int keycode, int scancode) +{ + IM_UNUSED(scancode); + switch (keycode) + { + case GLFW_KEY_TAB: return ImGuiKey_Tab; + case GLFW_KEY_LEFT: return ImGuiKey_LeftArrow; + case GLFW_KEY_RIGHT: return ImGuiKey_RightArrow; + case GLFW_KEY_UP: return ImGuiKey_UpArrow; + case GLFW_KEY_DOWN: return ImGuiKey_DownArrow; + case GLFW_KEY_PAGE_UP: return ImGuiKey_PageUp; + case GLFW_KEY_PAGE_DOWN: return ImGuiKey_PageDown; + case GLFW_KEY_HOME: return ImGuiKey_Home; + case GLFW_KEY_END: return ImGuiKey_End; + case GLFW_KEY_INSERT: return ImGuiKey_Insert; + case GLFW_KEY_DELETE: return ImGuiKey_Delete; + case GLFW_KEY_BACKSPACE: return ImGuiKey_Backspace; + case GLFW_KEY_SPACE: return ImGuiKey_Space; + case GLFW_KEY_ENTER: return ImGuiKey_Enter; + case GLFW_KEY_ESCAPE: return ImGuiKey_Escape; + case GLFW_KEY_APOSTROPHE: return ImGuiKey_Apostrophe; + case GLFW_KEY_COMMA: return ImGuiKey_Comma; + case GLFW_KEY_MINUS: return ImGuiKey_Minus; + case GLFW_KEY_PERIOD: return ImGuiKey_Period; + case GLFW_KEY_SLASH: return ImGuiKey_Slash; + case GLFW_KEY_SEMICOLON: return ImGuiKey_Semicolon; + case GLFW_KEY_EQUAL: return ImGuiKey_Equal; + case GLFW_KEY_LEFT_BRACKET: return ImGuiKey_LeftBracket; + case GLFW_KEY_BACKSLASH: return ImGuiKey_Backslash; + case GLFW_KEY_WORLD_1: return ImGuiKey_Oem102; + case GLFW_KEY_WORLD_2: return ImGuiKey_Oem102; + case GLFW_KEY_RIGHT_BRACKET: return ImGuiKey_RightBracket; + case GLFW_KEY_GRAVE_ACCENT: return ImGuiKey_GraveAccent; + case GLFW_KEY_CAPS_LOCK: return ImGuiKey_CapsLock; + case GLFW_KEY_SCROLL_LOCK: return ImGuiKey_ScrollLock; + case GLFW_KEY_NUM_LOCK: return ImGuiKey_NumLock; + case GLFW_KEY_PRINT_SCREEN: return ImGuiKey_PrintScreen; + case GLFW_KEY_PAUSE: return ImGuiKey_Pause; + case GLFW_KEY_KP_0: return ImGuiKey_Keypad0; + case GLFW_KEY_KP_1: return ImGuiKey_Keypad1; + case GLFW_KEY_KP_2: return ImGuiKey_Keypad2; + case GLFW_KEY_KP_3: return ImGuiKey_Keypad3; + case GLFW_KEY_KP_4: return ImGuiKey_Keypad4; + case GLFW_KEY_KP_5: return ImGuiKey_Keypad5; + case GLFW_KEY_KP_6: return ImGuiKey_Keypad6; + case GLFW_KEY_KP_7: return ImGuiKey_Keypad7; + case GLFW_KEY_KP_8: return ImGuiKey_Keypad8; + case GLFW_KEY_KP_9: return ImGuiKey_Keypad9; + case GLFW_KEY_KP_DECIMAL: return ImGuiKey_KeypadDecimal; + case GLFW_KEY_KP_DIVIDE: return ImGuiKey_KeypadDivide; + case GLFW_KEY_KP_MULTIPLY: return ImGuiKey_KeypadMultiply; + case GLFW_KEY_KP_SUBTRACT: return ImGuiKey_KeypadSubtract; + case GLFW_KEY_KP_ADD: return ImGuiKey_KeypadAdd; + case GLFW_KEY_KP_ENTER: return ImGuiKey_KeypadEnter; + case GLFW_KEY_KP_EQUAL: return ImGuiKey_KeypadEqual; + case GLFW_KEY_LEFT_SHIFT: return ImGuiKey_LeftShift; + case GLFW_KEY_LEFT_CONTROL: return ImGuiKey_LeftCtrl; + case GLFW_KEY_LEFT_ALT: return ImGuiKey_LeftAlt; + case GLFW_KEY_LEFT_SUPER: return ImGuiKey_LeftSuper; + case GLFW_KEY_RIGHT_SHIFT: return ImGuiKey_RightShift; + case GLFW_KEY_RIGHT_CONTROL: return ImGuiKey_RightCtrl; + case GLFW_KEY_RIGHT_ALT: return ImGuiKey_RightAlt; + case GLFW_KEY_RIGHT_SUPER: return ImGuiKey_RightSuper; + case GLFW_KEY_MENU: return ImGuiKey_Menu; + case GLFW_KEY_0: return ImGuiKey_0; + case GLFW_KEY_1: return ImGuiKey_1; + case GLFW_KEY_2: return ImGuiKey_2; + case GLFW_KEY_3: return ImGuiKey_3; + case GLFW_KEY_4: return ImGuiKey_4; + case GLFW_KEY_5: return ImGuiKey_5; + case GLFW_KEY_6: return ImGuiKey_6; + case GLFW_KEY_7: return ImGuiKey_7; + case GLFW_KEY_8: return ImGuiKey_8; + case GLFW_KEY_9: return ImGuiKey_9; + case GLFW_KEY_A: return ImGuiKey_A; + case GLFW_KEY_B: return ImGuiKey_B; + case GLFW_KEY_C: return ImGuiKey_C; + case GLFW_KEY_D: return ImGuiKey_D; + case GLFW_KEY_E: return ImGuiKey_E; + case GLFW_KEY_F: return ImGuiKey_F; + case GLFW_KEY_G: return ImGuiKey_G; + case GLFW_KEY_H: return ImGuiKey_H; + case GLFW_KEY_I: return ImGuiKey_I; + case GLFW_KEY_J: return ImGuiKey_J; + case GLFW_KEY_K: return ImGuiKey_K; + case GLFW_KEY_L: return ImGuiKey_L; + case GLFW_KEY_M: return ImGuiKey_M; + case GLFW_KEY_N: return ImGuiKey_N; + case GLFW_KEY_O: return ImGuiKey_O; + case GLFW_KEY_P: return ImGuiKey_P; + case GLFW_KEY_Q: return ImGuiKey_Q; + case GLFW_KEY_R: return ImGuiKey_R; + case GLFW_KEY_S: return ImGuiKey_S; + case GLFW_KEY_T: return ImGuiKey_T; + case GLFW_KEY_U: return ImGuiKey_U; + case GLFW_KEY_V: return ImGuiKey_V; + case GLFW_KEY_W: return ImGuiKey_W; + case GLFW_KEY_X: return ImGuiKey_X; + case GLFW_KEY_Y: return ImGuiKey_Y; + case GLFW_KEY_Z: return ImGuiKey_Z; + case GLFW_KEY_F1: return ImGuiKey_F1; + case GLFW_KEY_F2: return ImGuiKey_F2; + case GLFW_KEY_F3: return ImGuiKey_F3; + case GLFW_KEY_F4: return ImGuiKey_F4; + case GLFW_KEY_F5: return ImGuiKey_F5; + case GLFW_KEY_F6: return ImGuiKey_F6; + case GLFW_KEY_F7: return ImGuiKey_F7; + case GLFW_KEY_F8: return ImGuiKey_F8; + case GLFW_KEY_F9: return ImGuiKey_F9; + case GLFW_KEY_F10: return ImGuiKey_F10; + case GLFW_KEY_F11: return ImGuiKey_F11; + case GLFW_KEY_F12: return ImGuiKey_F12; + case GLFW_KEY_F13: return ImGuiKey_F13; + case GLFW_KEY_F14: return ImGuiKey_F14; + case GLFW_KEY_F15: return ImGuiKey_F15; + case GLFW_KEY_F16: return ImGuiKey_F16; + case GLFW_KEY_F17: return ImGuiKey_F17; + case GLFW_KEY_F18: return ImGuiKey_F18; + case GLFW_KEY_F19: return ImGuiKey_F19; + case GLFW_KEY_F20: return ImGuiKey_F20; + case GLFW_KEY_F21: return ImGuiKey_F21; + case GLFW_KEY_F22: return ImGuiKey_F22; + case GLFW_KEY_F23: return ImGuiKey_F23; + case GLFW_KEY_F24: return ImGuiKey_F24; + default: return ImGuiKey_None; + } +} + +// X11 does not include current pressed/released modifier key in 'mods' flags submitted by GLFW +// See https://github.com/ocornut/imgui/issues/6034 and https://github.com/glfw/glfw/issues/1630 +static void ImGui_ImplGlfw_UpdateKeyModifiers(ImGuiIO& io, GLFWwindow* window) +{ + io.AddKeyEvent(ImGuiMod_Ctrl, (glfwGetKey(window, GLFW_KEY_LEFT_CONTROL) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_CONTROL) == GLFW_PRESS)); + io.AddKeyEvent(ImGuiMod_Shift, (glfwGetKey(window, GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_SHIFT) == GLFW_PRESS)); + io.AddKeyEvent(ImGuiMod_Alt, (glfwGetKey(window, GLFW_KEY_LEFT_ALT) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_ALT) == GLFW_PRESS)); + io.AddKeyEvent(ImGuiMod_Super, (glfwGetKey(window, GLFW_KEY_LEFT_SUPER) == GLFW_PRESS) || (glfwGetKey(window, GLFW_KEY_RIGHT_SUPER) == GLFW_PRESS)); +} + +static bool ImGui_ImplGlfw_ShouldChainCallback(ImGui_ImplGlfw_Data* bd, GLFWwindow* window) +{ + return bd->CallbacksChainForAllWindows ? true : (window == bd->Window); +} + +void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackMousebutton != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackMousebutton(window, button, action, mods); + + // Workaround for Linux: ignore mouse up events which are following an focus loss following a viewport creation + if (bd->MouseIgnoreButtonUp && action == GLFW_RELEASE) + return; + + ImGuiIO& io = ImGui::GetIO(bd->Context); + ImGui_ImplGlfw_UpdateKeyModifiers(io, window); + if (button >= 0 && button < ImGuiMouseButton_COUNT) + io.AddMouseButtonEvent(button, action == GLFW_PRESS); +} + +void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackScroll != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackScroll(window, xoffset, yoffset); + +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 + // Ignore GLFW events: will be processed in ImGui_ImplEmscripten_WheelCallback(). + return; +#endif + + ImGuiIO& io = ImGui::GetIO(bd->Context); + io.AddMouseWheelEvent((float)xoffset, (float)yoffset); +} + +// FIXME: should this be baked into ImGui_ImplGlfw_KeyToImGuiKey()? then what about the values passed to io.SetKeyEventNativeData()? +static int ImGui_ImplGlfw_TranslateUntranslatedKey(int key, int scancode) +{ +#if GLFW_HAS_GETKEYNAME && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) + // GLFW 3.1+ attempts to "untranslate" keys, which goes the opposite of what every other framework does, making using lettered shortcuts difficult. + // (It had reasons to do so: namely GLFW is/was more likely to be used for WASD-type game controls rather than lettered shortcuts, but IHMO the 3.1 change could have been done differently) + // See https://github.com/glfw/glfw/issues/1502 for details. + // Adding a workaround to undo this (so our keys are translated->untranslated->translated, likely a lossy process). + // This won't cover edge cases but this is at least going to cover common cases. + if (key >= GLFW_KEY_KP_0 && key <= GLFW_KEY_KP_EQUAL) + return key; + GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr); + const char* key_name = glfwGetKeyName(key, scancode); + glfwSetErrorCallback(prev_error_callback); +#if GLFW_HAS_GETERROR && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) // Eat errors (see #5908) + (void)glfwGetError(nullptr); +#endif + if (key_name && key_name[0] != 0 && key_name[1] == 0) + { + const char char_names[] = "`-=[]\\,;\'./"; + const int char_keys[] = { GLFW_KEY_GRAVE_ACCENT, GLFW_KEY_MINUS, GLFW_KEY_EQUAL, GLFW_KEY_LEFT_BRACKET, GLFW_KEY_RIGHT_BRACKET, GLFW_KEY_BACKSLASH, GLFW_KEY_COMMA, GLFW_KEY_SEMICOLON, GLFW_KEY_APOSTROPHE, GLFW_KEY_PERIOD, GLFW_KEY_SLASH, 0 }; + IM_ASSERT(IM_ARRAYSIZE(char_names) == IM_ARRAYSIZE(char_keys)); + if (key_name[0] >= '0' && key_name[0] <= '9') { key = GLFW_KEY_0 + (key_name[0] - '0'); } + else if (key_name[0] >= 'A' && key_name[0] <= 'Z') { key = GLFW_KEY_A + (key_name[0] - 'A'); } + else if (key_name[0] >= 'a' && key_name[0] <= 'z') { key = GLFW_KEY_A + (key_name[0] - 'a'); } + else if (const char* p = strchr(char_names, key_name[0])) { key = char_keys[p - char_names]; } + } + // if (action == GLFW_PRESS) printf("key %d scancode %d name '%s'\n", key, scancode, key_name); +#else + IM_UNUSED(scancode); +#endif + return key; +} + +void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int keycode, int scancode, int action, int mods) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackKey != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackKey(window, keycode, scancode, action, mods); + + if (action != GLFW_PRESS && action != GLFW_RELEASE) + return; + + ImGuiIO& io = ImGui::GetIO(bd->Context); + ImGui_ImplGlfw_UpdateKeyModifiers(io, window); + + if (keycode >= 0 && keycode < IM_ARRAYSIZE(bd->KeyOwnerWindows)) + bd->KeyOwnerWindows[keycode] = (action == GLFW_PRESS) ? window : nullptr; + + keycode = ImGui_ImplGlfw_TranslateUntranslatedKey(keycode, scancode); + + ImGuiKey imgui_key = ImGui_ImplGlfw_KeyToImGuiKey(keycode, scancode); + io.AddKeyEvent(imgui_key, (action == GLFW_PRESS)); + io.SetKeyEventNativeData(imgui_key, keycode, scancode); // To support legacy indexing (<1.87 user code) +} + +void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackWindowFocus != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackWindowFocus(window, focused); + + // Workaround for Linux: when losing focus with MouseIgnoreButtonUpWaitForFocusLoss set, we will temporarily ignore subsequent Mouse Up events + bd->MouseIgnoreButtonUp = (bd->MouseIgnoreButtonUpWaitForFocusLoss && focused == 0); + bd->MouseIgnoreButtonUpWaitForFocusLoss = false; + + ImGuiIO& io = ImGui::GetIO(bd->Context); + io.AddFocusEvent(focused != 0); +} + +void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackCursorPos != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackCursorPos(window, x, y); + + ImGuiIO& io = ImGui::GetIO(bd->Context); + if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) + { + int window_x, window_y; + glfwGetWindowPos(window, &window_x, &window_y); + x += window_x; + y += window_y; + } + io.AddMousePosEvent((float)x, (float)y); + bd->LastValidMousePos = ImVec2((float)x, (float)y); +} + +// Workaround: X11 seems to send spurious Leave/Enter events which would make us lose our position, +// so we back it up and restore on Leave/Enter (see https://github.com/ocornut/imgui/issues/4984) +void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackCursorEnter != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackCursorEnter(window, entered); + + ImGuiIO& io = ImGui::GetIO(bd->Context); + if (entered) + { + bd->MouseWindow = window; + io.AddMousePosEvent(bd->LastValidMousePos.x, bd->LastValidMousePos.y); + } + else if (!entered && bd->MouseWindow == window) + { + bd->LastValidMousePos = io.MousePos; + bd->MouseWindow = nullptr; + io.AddMousePosEvent(-FLT_MAX, -FLT_MAX); + } +} + +void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + if (bd->PrevUserCallbackChar != nullptr && ImGui_ImplGlfw_ShouldChainCallback(bd, window)) + bd->PrevUserCallbackChar(window, c); + + ImGuiIO& io = ImGui::GetIO(bd->Context); + io.AddInputCharacter(c); +} + +void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor*, int) +{ + // This function is technically part of the API even if we stopped using the callback, so leaving it around. +} + +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 +static EM_BOOL ImGui_ImplEmscripten_WheelCallback(int, const EmscriptenWheelEvent* ev, void* user_data) +{ + // Mimic Emscripten_HandleWheel() in SDL. + // Corresponding equivalent in GLFW JS emulation layer has incorrect quantizing preventing small values. See #6096 + ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data; + float multiplier = 0.0f; + if (ev->deltaMode == DOM_DELTA_PIXEL) { multiplier = 1.0f / 100.0f; } // 100 pixels make up a step. + else if (ev->deltaMode == DOM_DELTA_LINE) { multiplier = 1.0f / 3.0f; } // 3 lines make up a step. + else if (ev->deltaMode == DOM_DELTA_PAGE) { multiplier = 80.0f; } // A page makes up 80 steps. + float wheel_x = ev->deltaX * -multiplier; + float wheel_y = ev->deltaY * -multiplier; + ImGuiIO& io = ImGui::GetIO(bd->Context); + io.AddMouseWheelEvent(wheel_x, wheel_y); + //IMGUI_DEBUG_LOG("[Emsc] mode %d dx: %.2f, dy: %.2f, dz: %.2f --> feed %.2f %.2f\n", (int)ev->deltaMode, ev->deltaX, ev->deltaY, ev->deltaZ, wheel_x, wheel_y); + return EM_TRUE; +} +#endif + +#ifdef _WIN32 +static LRESULT CALLBACK ImGui_ImplGlfw_WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam); +#endif + +void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + IM_ASSERT(bd->InstalledCallbacks == false && "Callbacks already installed!"); + IM_ASSERT(bd->Window == window); + + bd->PrevUserCallbackWindowFocus = glfwSetWindowFocusCallback(window, ImGui_ImplGlfw_WindowFocusCallback); + bd->PrevUserCallbackCursorEnter = glfwSetCursorEnterCallback(window, ImGui_ImplGlfw_CursorEnterCallback); + bd->PrevUserCallbackCursorPos = glfwSetCursorPosCallback(window, ImGui_ImplGlfw_CursorPosCallback); + bd->PrevUserCallbackMousebutton = glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback); + bd->PrevUserCallbackScroll = glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback); + bd->PrevUserCallbackKey = glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback); + bd->PrevUserCallbackChar = glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback); + bd->PrevUserCallbackMonitor = glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback); + bd->InstalledCallbacks = true; +} + +void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(window); + IM_ASSERT(bd->InstalledCallbacks == true && "Callbacks not installed!"); + IM_ASSERT(bd->Window == window); + + glfwSetWindowFocusCallback(window, bd->PrevUserCallbackWindowFocus); + glfwSetCursorEnterCallback(window, bd->PrevUserCallbackCursorEnter); + glfwSetCursorPosCallback(window, bd->PrevUserCallbackCursorPos); + glfwSetMouseButtonCallback(window, bd->PrevUserCallbackMousebutton); + glfwSetScrollCallback(window, bd->PrevUserCallbackScroll); + glfwSetKeyCallback(window, bd->PrevUserCallbackKey); + glfwSetCharCallback(window, bd->PrevUserCallbackChar); + glfwSetMonitorCallback(bd->PrevUserCallbackMonitor); + bd->InstalledCallbacks = false; + bd->PrevUserCallbackWindowFocus = nullptr; + bd->PrevUserCallbackCursorEnter = nullptr; + bd->PrevUserCallbackCursorPos = nullptr; + bd->PrevUserCallbackMousebutton = nullptr; + bd->PrevUserCallbackScroll = nullptr; + bd->PrevUserCallbackKey = nullptr; + bd->PrevUserCallbackChar = nullptr; + bd->PrevUserCallbackMonitor = nullptr; +} + +// Set to 'true' to enable chaining installed callbacks for all windows (including secondary viewports created by backends or by user. +// This is 'false' by default meaning we only chain callbacks for the main viewport. +// We cannot set this to 'true' by default because user callbacks code may be not testing the 'window' parameter of their callback. +// If you set this to 'true' your user callback code will need to make sure you are testing the 'window' parameter. +void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + bd->CallbacksChainForAllWindows = chain_for_all_windows; +} + +#ifdef __EMSCRIPTEN__ +#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817 +void ImGui_ImplGlfw_EmscriptenOpenURL(const char* url) { if (url) emscripten::glfw3::OpenURL(url); } +#else +EM_JS(void, ImGui_ImplGlfw_EmscriptenOpenURL, (const char* url), { url = url ? UTF8ToString(url) : null; if (url) window.open(url, '_blank'); }); +#endif +#endif + +static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api) +{ + ImGuiIO& io = ImGui::GetIO(); + IMGUI_CHECKVERSION(); + IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!"); + //printf("GLFW_VERSION: %d.%d.%d (%d)", GLFW_VERSION_MAJOR, GLFW_VERSION_MINOR, GLFW_VERSION_REVISION, GLFW_VERSION_COMBINED); + + // Setup backend capabilities flags + ImGui_ImplGlfw_Data* bd = IM_NEW(ImGui_ImplGlfw_Data)(); + snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_glfw (%d)", GLFW_VERSION_COMBINED); + io.BackendPlatformUserData = (void*)bd; + io.BackendPlatformName = bd->BackendPlatformName; + io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional) + io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used) + + bool has_viewports = false; +#ifndef __EMSCRIPTEN__ + has_viewports = true; +#if GLFW_HAS_GETPLATFORM + if (glfwGetPlatform() == GLFW_PLATFORM_WAYLAND) + has_viewports = false; +#endif + if (has_viewports) + io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports; // We can create multi-viewports on the Platform side (optional) +#endif +#if GLFW_HAS_MOUSE_PASSTHROUGH || GLFW_HAS_WINDOW_HOVERED + io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can call io.AddMouseViewportEvent() with correct data (optional) +#endif + + bd->Context = ImGui::GetCurrentContext(); + bd->Window = window; + bd->Time = 0.0; + ImGui_ImplGlfw_ContextMap_Add(window, bd->Context); + + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); +#if GLFW_VERSION_COMBINED < 3300 + platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(ImGui_ImplGlfw_GetBackendData()->Window, text); }; + platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) { return glfwGetClipboardString(ImGui_ImplGlfw_GetBackendData()->Window); }; +#else + platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(nullptr, text); }; + platform_io.Platform_GetClipboardTextFn = [](ImGuiContext*) { return glfwGetClipboardString(nullptr); }; +#endif + +#ifdef __EMSCRIPTEN__ + platform_io.Platform_OpenInShellFn = [](ImGuiContext*, const char* url) { ImGui_ImplGlfw_EmscriptenOpenURL(url); return true; }; +#endif + + // Create mouse cursors + // (By design, on X11 cursors are user configurable and some cursors may be missing. When a cursor doesn't exist, + // GLFW will emit an error which will often be printed by the app, so we temporarily disable error reporting. + // Missing cursors will return nullptr and our _UpdateMouseCursor() function will use the Arrow cursor instead.) + GLFWerrorfun prev_error_callback = glfwSetErrorCallback(nullptr); + bd->MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR); +#if GLFW_HAS_NEW_CURSORS + bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_RESIZE_ALL_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_RESIZE_NESW_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_RESIZE_NWSE_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_NOT_ALLOWED_CURSOR); +#else + bd->MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); + bd->MouseCursors[ImGuiMouseCursor_NotAllowed] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); +#endif + glfwSetErrorCallback(prev_error_callback); +#if GLFW_HAS_GETERROR && !defined(__EMSCRIPTEN__) // Eat errors (see #5908) + (void)glfwGetError(nullptr); +#endif + + // Chain GLFW callbacks: our callbacks will call the user's previously installed callbacks, if any. + if (install_callbacks) + ImGui_ImplGlfw_InstallCallbacks(window); + + // Update monitor a first time during init + // (note: monitor callback are broken in GLFW 3.2 and earlier, see github.com/glfw/glfw/issues/784) + ImGui_ImplGlfw_UpdateMonitors(); + glfwSetMonitorCallback(ImGui_ImplGlfw_MonitorCallback); + + // Set platform dependent data in viewport + ImGuiViewport* main_viewport = ImGui::GetMainViewport(); + main_viewport->PlatformHandle = (void*)bd->Window; +#ifdef _WIN32 + main_viewport->PlatformHandleRaw = glfwGetWin32Window(bd->Window); +#elif defined(__APPLE__) + main_viewport->PlatformHandleRaw = (void*)glfwGetCocoaWindow(bd->Window); +#else + IM_UNUSED(main_viewport); +#endif + if (has_viewports) + ImGui_ImplGlfw_InitMultiViewportSupport(); + + // Windows: register a WndProc hook so we can intercept some messages. +#ifdef _WIN32 + HWND hwnd = (HWND)main_viewport->PlatformHandleRaw; + ::SetPropA(hwnd, "IMGUI_BACKEND_DATA", bd); + bd->PrevWndProc = (WNDPROC)::GetWindowLongPtrW(hwnd, GWLP_WNDPROC); + IM_ASSERT(bd->PrevWndProc != nullptr); + ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc); +#endif + + // Emscripten: the same application can run on various platforms, so we detect the Apple platform at runtime + // to override io.ConfigMacOSXBehaviors from its default (which is always false in Emscripten). +#ifdef __EMSCRIPTEN__ +#if EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 >= 34020240817 + if (emscripten::glfw3::IsRuntimePlatformApple()) + { + io.ConfigMacOSXBehaviors = true; + + // Due to how the browser (poorly) handles the Meta Key, this line essentially disables repeats when used. + // This means that Meta + V only registers a single key-press, even if the keys are held. + // This is a compromise for dealing with this issue in ImGui since ImGui implements key repeat itself. + // See https://github.com/pongasoft/emscripten-glfw/blob/v3.4.0.20240817/docs/Usage.md#the-problem-of-the-super-key + emscripten::glfw3::SetSuperPlusKeyTimeouts(10, 10); + } +#endif +#endif + + bd->ClientApi = client_api; + return true; +} + +bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks) +{ + return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL); +} + +bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks) +{ + return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan); +} + +bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks) +{ + return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Unknown); +} + +void ImGui_ImplGlfw_Shutdown() +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?"); + ImGuiIO& io = ImGui::GetIO(); + + ImGui_ImplGlfw_ShutdownMultiViewportSupport(); + + if (bd->InstalledCallbacks) + ImGui_ImplGlfw_RestoreCallbacks(bd->Window); +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 + if (bd->CanvasSelector) + emscripten_set_wheel_callback(bd->CanvasSelector, nullptr, false, nullptr); +#endif + + for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++) + glfwDestroyCursor(bd->MouseCursors[cursor_n]); + + // Windows: restore our WndProc hook +#ifdef _WIN32 + ImGuiViewport* main_viewport = ImGui::GetMainViewport(); + ::SetPropA((HWND)main_viewport->PlatformHandleRaw, "IMGUI_BACKEND_DATA", nullptr); + ::SetWindowLongPtrW((HWND)main_viewport->PlatformHandleRaw, GWLP_WNDPROC, (LONG_PTR)bd->PrevWndProc); + bd->PrevWndProc = nullptr; +#endif + + io.BackendPlatformName = nullptr; + io.BackendPlatformUserData = nullptr; + io.BackendFlags &= ~(ImGuiBackendFlags_HasMouseCursors | ImGuiBackendFlags_HasSetMousePos | ImGuiBackendFlags_HasGamepad | ImGuiBackendFlags_PlatformHasViewports | ImGuiBackendFlags_HasMouseHoveredViewport); + ImGui_ImplGlfw_ContextMap_Remove(bd->Window); + IM_DELETE(bd); +} + +static void ImGui_ImplGlfw_UpdateMouseData() +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGuiIO& io = ImGui::GetIO(); + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + + ImGuiID mouse_viewport_id = 0; + const ImVec2 mouse_pos_prev = io.MousePos; + for (int n = 0; n < platform_io.Viewports.Size; n++) + { + ImGuiViewport* viewport = platform_io.Viewports[n]; + GLFWwindow* window = (GLFWwindow*)viewport->PlatformHandle; + +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 + const bool is_window_focused = true; +#else + const bool is_window_focused = glfwGetWindowAttrib(window, GLFW_FOCUSED) != 0; +#endif + if (is_window_focused) + { + // (Optional) Set OS mouse position from Dear ImGui if requested (rarely used, only when io.ConfigNavMoveSetMousePos is enabled by user) + // When multi-viewports are enabled, all Dear ImGui positions are same as OS positions. + if (io.WantSetMousePos) + glfwSetCursorPos(window, (double)(mouse_pos_prev.x - viewport->Pos.x), (double)(mouse_pos_prev.y - viewport->Pos.y)); + + // (Optional) Fallback to provide mouse position when focused (ImGui_ImplGlfw_CursorPosCallback already provides this when hovered or captured) + if (bd->MouseWindow == nullptr) + { + double mouse_x, mouse_y; + glfwGetCursorPos(window, &mouse_x, &mouse_y); + if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) + { + // Single viewport mode: mouse position in client window coordinates (io.MousePos is (0,0) when the mouse is on the upper-left corner of the app window) + // Multi-viewport mode: mouse position in OS absolute coordinates (io.MousePos is (0,0) when the mouse is on the upper-left of the primary monitor) + int window_x, window_y; + glfwGetWindowPos(window, &window_x, &window_y); + mouse_x += window_x; + mouse_y += window_y; + } + bd->LastValidMousePos = ImVec2((float)mouse_x, (float)mouse_y); + io.AddMousePosEvent((float)mouse_x, (float)mouse_y); + } + } + + // (Optional) When using multiple viewports: call io.AddMouseViewportEvent() with the viewport the OS mouse cursor is hovering. + // If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the backend, Dear imGui will ignore this field and infer the information using its flawed heuristic. + // - [X] GLFW >= 3.3 backend ON WINDOWS ONLY does correctly ignore viewports with the _NoInputs flag (since we implement hit via our WndProc hook) + // On other platforms we rely on the library fallbacking to its own search when reporting a viewport with _NoInputs flag. + // - [!] GLFW <= 3.2 backend CANNOT correctly ignore viewports with the _NoInputs flag, and CANNOT reported Hovered Viewport because of mouse capture. + // Some backend are not able to handle that correctly. If a backend report an hovered viewport that has the _NoInputs flag (e.g. when dragging a window + // for docking, the viewport has the _NoInputs flag in order to allow us to find the viewport under), then Dear ImGui is forced to ignore the value reported + // by the backend, and use its flawed heuristic to guess the viewport behind. + // - [X] GLFW backend correctly reports this regardless of another viewport behind focused and dragged from (we need this to find a useful drag and drop target). + // FIXME: This is currently only correct on Win32. See what we do below with the WM_NCHITTEST, missing an equivalent for other systems. + // See https://github.com/glfw/glfw/issues/1236 if you want to help in making this a GLFW feature. +#if GLFW_HAS_MOUSE_PASSTHROUGH + const bool window_no_input = (viewport->Flags & ImGuiViewportFlags_NoInputs) != 0; + glfwSetWindowAttrib(window, GLFW_MOUSE_PASSTHROUGH, window_no_input); +#endif +#if GLFW_HAS_MOUSE_PASSTHROUGH || GLFW_HAS_WINDOW_HOVERED + if (glfwGetWindowAttrib(window, GLFW_HOVERED)) + mouse_viewport_id = viewport->ID; +#else + // We cannot use bd->MouseWindow maintained from CursorEnter/Leave callbacks, because it is locked to the window capturing mouse. +#endif + } + + if (io.BackendFlags & ImGuiBackendFlags_HasMouseHoveredViewport) + io.AddMouseViewportEvent(mouse_viewport_id); +} + +static void ImGui_ImplGlfw_UpdateMouseCursor() +{ + ImGuiIO& io = ImGui::GetIO(); + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(bd->Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED) + return; + + ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor(); + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + for (int n = 0; n < platform_io.Viewports.Size; n++) + { + GLFWwindow* window = (GLFWwindow*)platform_io.Viewports[n]->PlatformHandle; + if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor) + { + // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); + } + else + { + // Show OS mouse cursor + // FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here. + glfwSetCursor(window, bd->MouseCursors[imgui_cursor] ? bd->MouseCursors[imgui_cursor] : bd->MouseCursors[ImGuiMouseCursor_Arrow]); + glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); + } + } +} + +// Update gamepad inputs +static inline float Saturate(float v) { return v < 0.0f ? 0.0f : v > 1.0f ? 1.0f : v; } +static void ImGui_ImplGlfw_UpdateGamepads() +{ + ImGuiIO& io = ImGui::GetIO(); + if ((io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) == 0) // FIXME: Technically feeding gamepad shouldn't depend on this now that they are regular inputs, but see #8075 + return; + + io.BackendFlags &= ~ImGuiBackendFlags_HasGamepad; +#if GLFW_HAS_GAMEPAD_API && !defined(EMSCRIPTEN_USE_EMBEDDED_GLFW3) + GLFWgamepadstate gamepad; + if (!glfwGetGamepadState(GLFW_JOYSTICK_1, &gamepad)) + return; + #define MAP_BUTTON(KEY_NO, BUTTON_NO, _UNUSED) do { io.AddKeyEvent(KEY_NO, gamepad.buttons[BUTTON_NO] != 0); } while (0) + #define MAP_ANALOG(KEY_NO, AXIS_NO, _UNUSED, V0, V1) do { float v = gamepad.axes[AXIS_NO]; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0) +#else + int axes_count = 0, buttons_count = 0; + const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count); + const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count); + if (axes_count == 0 || buttons_count == 0) + return; + #define MAP_BUTTON(KEY_NO, _UNUSED, BUTTON_NO) do { io.AddKeyEvent(KEY_NO, (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS)); } while (0) + #define MAP_ANALOG(KEY_NO, _UNUSED, AXIS_NO, V0, V1) do { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); io.AddKeyAnalogEvent(KEY_NO, v > 0.10f, Saturate(v)); } while (0) +#endif + io.BackendFlags |= ImGuiBackendFlags_HasGamepad; + MAP_BUTTON(ImGuiKey_GamepadStart, GLFW_GAMEPAD_BUTTON_START, 7); + MAP_BUTTON(ImGuiKey_GamepadBack, GLFW_GAMEPAD_BUTTON_BACK, 6); + MAP_BUTTON(ImGuiKey_GamepadFaceLeft, GLFW_GAMEPAD_BUTTON_X, 2); // Xbox X, PS Square + MAP_BUTTON(ImGuiKey_GamepadFaceRight, GLFW_GAMEPAD_BUTTON_B, 1); // Xbox B, PS Circle + MAP_BUTTON(ImGuiKey_GamepadFaceUp, GLFW_GAMEPAD_BUTTON_Y, 3); // Xbox Y, PS Triangle + MAP_BUTTON(ImGuiKey_GamepadFaceDown, GLFW_GAMEPAD_BUTTON_A, 0); // Xbox A, PS Cross + MAP_BUTTON(ImGuiKey_GamepadDpadLeft, GLFW_GAMEPAD_BUTTON_DPAD_LEFT, 13); + MAP_BUTTON(ImGuiKey_GamepadDpadRight, GLFW_GAMEPAD_BUTTON_DPAD_RIGHT, 11); + MAP_BUTTON(ImGuiKey_GamepadDpadUp, GLFW_GAMEPAD_BUTTON_DPAD_UP, 10); + MAP_BUTTON(ImGuiKey_GamepadDpadDown, GLFW_GAMEPAD_BUTTON_DPAD_DOWN, 12); + MAP_BUTTON(ImGuiKey_GamepadL1, GLFW_GAMEPAD_BUTTON_LEFT_BUMPER, 4); + MAP_BUTTON(ImGuiKey_GamepadR1, GLFW_GAMEPAD_BUTTON_RIGHT_BUMPER, 5); + MAP_ANALOG(ImGuiKey_GamepadL2, GLFW_GAMEPAD_AXIS_LEFT_TRIGGER, 4, -0.75f, +1.0f); + MAP_ANALOG(ImGuiKey_GamepadR2, GLFW_GAMEPAD_AXIS_RIGHT_TRIGGER, 5, -0.75f, +1.0f); + MAP_BUTTON(ImGuiKey_GamepadL3, GLFW_GAMEPAD_BUTTON_LEFT_THUMB, 8); + MAP_BUTTON(ImGuiKey_GamepadR3, GLFW_GAMEPAD_BUTTON_RIGHT_THUMB, 9); + MAP_ANALOG(ImGuiKey_GamepadLStickLeft, GLFW_GAMEPAD_AXIS_LEFT_X, 0, -0.25f, -1.0f); + MAP_ANALOG(ImGuiKey_GamepadLStickRight, GLFW_GAMEPAD_AXIS_LEFT_X, 0, +0.25f, +1.0f); + MAP_ANALOG(ImGuiKey_GamepadLStickUp, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, -0.25f, -1.0f); + MAP_ANALOG(ImGuiKey_GamepadLStickDown, GLFW_GAMEPAD_AXIS_LEFT_Y, 1, +0.25f, +1.0f); + MAP_ANALOG(ImGuiKey_GamepadRStickLeft, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, -0.25f, -1.0f); + MAP_ANALOG(ImGuiKey_GamepadRStickRight, GLFW_GAMEPAD_AXIS_RIGHT_X, 2, +0.25f, +1.0f); + MAP_ANALOG(ImGuiKey_GamepadRStickUp, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, -0.25f, -1.0f); + MAP_ANALOG(ImGuiKey_GamepadRStickDown, GLFW_GAMEPAD_AXIS_RIGHT_Y, 3, +0.25f, +1.0f); + #undef MAP_BUTTON + #undef MAP_ANALOG +} + +static void ImGui_ImplGlfw_UpdateMonitors() +{ + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + + int monitors_count = 0; + GLFWmonitor** glfw_monitors = glfwGetMonitors(&monitors_count); + if (monitors_count == 0) // Preserve existing monitor list if there are none. Happens on macOS sleeping (#5683) + return; + + platform_io.Monitors.resize(0); + for (int n = 0; n < monitors_count; n++) + { + ImGuiPlatformMonitor monitor; + int x, y; + glfwGetMonitorPos(glfw_monitors[n], &x, &y); + const GLFWvidmode* vid_mode = glfwGetVideoMode(glfw_monitors[n]); + if (vid_mode == nullptr) + continue; // Failed to get Video mode (e.g. Emscripten does not support this function) + monitor.MainPos = monitor.WorkPos = ImVec2((float)x, (float)y); + monitor.MainSize = monitor.WorkSize = ImVec2((float)vid_mode->width, (float)vid_mode->height); +#if GLFW_HAS_MONITOR_WORK_AREA + int w, h; + glfwGetMonitorWorkarea(glfw_monitors[n], &x, &y, &w, &h); + if (w > 0 && h > 0) // Workaround a small GLFW issue reporting zero on monitor changes: https://github.com/glfw/glfw/pull/1761 + { + monitor.WorkPos = ImVec2((float)x, (float)y); + monitor.WorkSize = ImVec2((float)w, (float)h); + } +#endif + float scale = ImGui_ImplGlfw_GetContentScaleForMonitor(glfw_monitors[n]); + if (scale == 0.0f) + continue; // Some accessibility applications are declaring virtual monitors with a DPI of 0, see #7902. + monitor.DpiScale = scale; + monitor.PlatformHandle = (void*)glfw_monitors[n]; // [...] GLFW doc states: "guaranteed to be valid only until the monitor configuration changes" + platform_io.Monitors.push_back(monitor); + } +} + +// - On Windows the process needs to be marked DPI-aware!! SDL2 doesn't do it by default. You can call ::SetProcessDPIAware() or call ImGui_ImplWin32_EnableDpiAwareness() from Win32 backend. +// - Apple platforms use FramebufferScale so we always return 1.0f. +// - Some accessibility applications are declaring virtual monitors with a DPI of 0.0f, see #7902. We preserve this value for caller to handle. +float ImGui_ImplGlfw_GetContentScaleForWindow(GLFWwindow* window) +{ +#if GLFW_HAS_PER_MONITOR_DPI && !defined(__APPLE__) + float x_scale, y_scale; + glfwGetWindowContentScale(window, &x_scale, &y_scale); + return x_scale; +#else + IM_UNUSED(window); + return 1.0f; +#endif +} + +float ImGui_ImplGlfw_GetContentScaleForMonitor(GLFWmonitor* monitor) +{ +#if GLFW_HAS_PER_MONITOR_DPI && !defined(__APPLE__) + float x_scale, y_scale; + glfwGetMonitorContentScale(monitor, &x_scale, &y_scale); + return x_scale; +#else + IM_UNUSED(monitor); + return 1.0f; +#endif +} + +static void ImGui_ImplGlfw_GetWindowSizeAndFramebufferScale(GLFWwindow* window, ImVec2* out_size, ImVec2* out_framebuffer_scale) +{ + int w, h; + int display_w, display_h; + glfwGetWindowSize(window, &w, &h); + glfwGetFramebufferSize(window, &display_w, &display_h); + if (out_size != nullptr) + *out_size = ImVec2((float)w, (float)h); + if (out_framebuffer_scale != nullptr) + *out_framebuffer_scale = (w > 0 && h > 0) ? ImVec2((float)display_w / (float)w, (float)display_h / (float)h) : ImVec2(1.0f, 1.0f); +} + +void ImGui_ImplGlfw_NewFrame() +{ + ImGuiIO& io = ImGui::GetIO(); + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?"); + + // Setup main viewport size (every frame to accommodate for window resizing) + ImGui_ImplGlfw_GetWindowSizeAndFramebufferScale(bd->Window, &io.DisplaySize, &io.DisplayFramebufferScale); + ImGui_ImplGlfw_UpdateMonitors(); + + // Setup time step + // (Accept glfwGetTime() not returning a monotonically increasing value. Seems to happens on disconnecting peripherals and probably on VMs and Emscripten, see #6491, #6189, #6114, #3644) + double current_time = glfwGetTime(); + if (current_time <= bd->Time) + current_time = bd->Time + 0.00001f; + io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f); + bd->Time = current_time; + + bd->MouseIgnoreButtonUp = false; + ImGui_ImplGlfw_UpdateMouseData(); + ImGui_ImplGlfw_UpdateMouseCursor(); + + // Update game controllers (if enabled and available) + ImGui_ImplGlfw_UpdateGamepads(); +} + +// GLFW doesn't provide a portable sleep function +void ImGui_ImplGlfw_Sleep(int milliseconds) +{ +#ifdef _WIN32 + ::Sleep(milliseconds); +#else + usleep(milliseconds * 1000); +#endif +} + +#ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3 +static EM_BOOL ImGui_ImplGlfw_OnCanvasSizeChange(int event_type, const EmscriptenUiEvent* event, void* user_data) +{ + ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data; + double canvas_width, canvas_height; + emscripten_get_element_css_size(bd->CanvasSelector, &canvas_width, &canvas_height); + glfwSetWindowSize(bd->Window, (int)canvas_width, (int)canvas_height); + return true; +} + +static EM_BOOL ImGui_ImplEmscripten_FullscreenChangeCallback(int event_type, const EmscriptenFullscreenChangeEvent* event, void* user_data) +{ + ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)user_data; + double canvas_width, canvas_height; + emscripten_get_element_css_size(bd->CanvasSelector, &canvas_width, &canvas_height); + glfwSetWindowSize(bd->Window, (int)canvas_width, (int)canvas_height); + return true; +} + +// 'canvas_selector' is a CSS selector. The event listener is applied to the first element that matches the query. +// STRING MUST PERSIST FOR THE APPLICATION DURATION. PLEASE USE A STRING LITERAL OR ENSURE POINTER WILL STAY VALID. +void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow*, const char* canvas_selector) +{ + IM_ASSERT(canvas_selector != nullptr); + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplGlfw_InitForXXX()?"); + + bd->CanvasSelector = canvas_selector; + emscripten_set_resize_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, bd, false, ImGui_ImplGlfw_OnCanvasSizeChange); + emscripten_set_fullscreenchange_callback(EMSCRIPTEN_EVENT_TARGET_DOCUMENT, bd, false, ImGui_ImplEmscripten_FullscreenChangeCallback); + + // Change the size of the GLFW window according to the size of the canvas + ImGui_ImplGlfw_OnCanvasSizeChange(EMSCRIPTEN_EVENT_RESIZE, {}, bd); + + // Register Emscripten Wheel callback to workaround issue in Emscripten GLFW Emulation (#6096) + // We intentionally do not check 'if (install_callbacks)' here, as some users may set it to false and call GLFW callback themselves. + // FIXME: May break chaining in case user registered their own Emscripten callback? + emscripten_set_wheel_callback(bd->CanvasSelector, bd, false, ImGui_ImplEmscripten_WheelCallback); +} +#elif defined(EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3) +// When using --use-port=contrib.glfw3 for the GLFW implementation, you can override the behavior of this call +// by invoking emscripten_glfw_make_canvas_resizable afterward. +// See https://github.com/pongasoft/emscripten-glfw/blob/master/docs/Usage.md#how-to-make-the-canvas-resizable-by-the-user for an explanation +void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector) +{ + GLFWwindow* w = (GLFWwindow*)(EM_ASM_INT({ return Module.glfwGetWindow(UTF8ToString($0)); }, canvas_selector)); + IM_ASSERT(window == w); // Sanity check + IM_UNUSED(w); + emscripten_glfw_make_canvas_resizable(window, "window", nullptr); +} +#endif // #ifdef EMSCRIPTEN_USE_PORT_CONTRIB_GLFW3 + + +//-------------------------------------------------------------------------------------------------------- +// MULTI-VIEWPORT / PLATFORM INTERFACE SUPPORT +// This is an _advanced_ and _optional_ feature, allowing the backend to create and handle multiple viewports simultaneously. +// If you are new to dear imgui or creating a new binding for dear imgui, it is recommended that you completely ignore this section first.. +//-------------------------------------------------------------------------------------------------------- + +// Helper structure we store in the void* PlatformUserData field of each ImGuiViewport to easily retrieve our backend data. +struct ImGui_ImplGlfw_ViewportData +{ + GLFWwindow* Window; // Stored in ImGuiViewport::PlatformHandle + bool WindowOwned; + int IgnoreWindowPosEventFrame; + int IgnoreWindowSizeEventFrame; +#ifdef _WIN32 + WNDPROC PrevWndProc; +#endif + + ImGui_ImplGlfw_ViewportData() { memset((void*)this, 0, sizeof(*this)); IgnoreWindowSizeEventFrame = IgnoreWindowPosEventFrame = -1; } + ~ImGui_ImplGlfw_ViewportData() { IM_ASSERT(Window == nullptr); } +}; + +static void ImGui_ImplGlfw_WindowCloseCallback(GLFWwindow* window) +{ + if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window)) + viewport->PlatformRequestClose = true; +} + +// GLFW may dispatch window pos/size events after calling glfwSetWindowPos()/glfwSetWindowSize(). +// However: depending on the platform the callback may be invoked at different time: +// - on Windows it appears to be called within the glfwSetWindowPos()/glfwSetWindowSize() call +// - on Linux it is queued and invoked during glfwPollEvents() +// Because the event doesn't always fire on glfwSetWindowXXX() we use a frame counter tag to only +// ignore recent glfwSetWindowXXX() calls. +static void ImGui_ImplGlfw_WindowPosCallback(GLFWwindow* window, int, int) +{ + if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window)) + { + if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData) + { + bool ignore_event = (ImGui::GetFrameCount() <= vd->IgnoreWindowPosEventFrame + 1); + //data->IgnoreWindowPosEventFrame = -1; + if (ignore_event) + return; + } + viewport->PlatformRequestMove = true; + } +} + +static void ImGui_ImplGlfw_WindowSizeCallback(GLFWwindow* window, int, int) +{ + if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle(window)) + { + if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData) + { + bool ignore_event = (ImGui::GetFrameCount() <= vd->IgnoreWindowSizeEventFrame + 1); + //data->IgnoreWindowSizeEventFrame = -1; + if (ignore_event) + return; + } + viewport->PlatformRequestResize = true; + } +} + +static void ImGui_ImplGlfw_CreateWindow(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGui_ImplGlfw_ViewportData* vd = IM_NEW(ImGui_ImplGlfw_ViewportData)(); + viewport->PlatformUserData = vd; + + // Workaround for Linux: ignore mouse up events corresponding to losing focus of the previously focused window (#7733, #3158, #7922) +#ifdef __linux__ + bd->MouseIgnoreButtonUpWaitForFocusLoss = true; +#endif + + // GLFW 3.2 unfortunately always set focus on glfwCreateWindow() if GLFW_VISIBLE is set, regardless of GLFW_FOCUSED + // With GLFW 3.3, the hint GLFW_FOCUS_ON_SHOW fixes this problem + glfwWindowHint(GLFW_VISIBLE, false); + glfwWindowHint(GLFW_FOCUSED, false); +#if GLFW_HAS_FOCUS_ON_SHOW + glfwWindowHint(GLFW_FOCUS_ON_SHOW, false); + #endif + glfwWindowHint(GLFW_DECORATED, (viewport->Flags & ImGuiViewportFlags_NoDecoration) ? false : true); +#if GLFW_HAS_WINDOW_TOPMOST + glfwWindowHint(GLFW_FLOATING, (viewport->Flags & ImGuiViewportFlags_TopMost) ? true : false); +#endif + GLFWwindow* share_window = (bd->ClientApi == GlfwClientApi_OpenGL) ? bd->Window : nullptr; + vd->Window = glfwCreateWindow((int)viewport->Size.x, (int)viewport->Size.y, "No Title Yet", nullptr, share_window); + vd->WindowOwned = true; + ImGui_ImplGlfw_ContextMap_Add(vd->Window, bd->Context); + viewport->PlatformHandle = (void*)vd->Window; +#ifdef _WIN32 + viewport->PlatformHandleRaw = glfwGetWin32Window(vd->Window); + ::SetPropA((HWND)viewport->PlatformHandleRaw, "IMGUI_BACKEND_DATA", bd); +#elif defined(__APPLE__) + viewport->PlatformHandleRaw = (void*)glfwGetCocoaWindow(vd->Window); +#endif + glfwSetWindowPos(vd->Window, (int)viewport->Pos.x, (int)viewport->Pos.y); + + // Install GLFW callbacks for secondary viewports + glfwSetWindowFocusCallback(vd->Window, ImGui_ImplGlfw_WindowFocusCallback); + glfwSetCursorEnterCallback(vd->Window, ImGui_ImplGlfw_CursorEnterCallback); + glfwSetCursorPosCallback(vd->Window, ImGui_ImplGlfw_CursorPosCallback); + glfwSetMouseButtonCallback(vd->Window, ImGui_ImplGlfw_MouseButtonCallback); + glfwSetScrollCallback(vd->Window, ImGui_ImplGlfw_ScrollCallback); + glfwSetKeyCallback(vd->Window, ImGui_ImplGlfw_KeyCallback); + glfwSetCharCallback(vd->Window, ImGui_ImplGlfw_CharCallback); + glfwSetWindowCloseCallback(vd->Window, ImGui_ImplGlfw_WindowCloseCallback); + glfwSetWindowPosCallback(vd->Window, ImGui_ImplGlfw_WindowPosCallback); + glfwSetWindowSizeCallback(vd->Window, ImGui_ImplGlfw_WindowSizeCallback); + if (bd->ClientApi == GlfwClientApi_OpenGL) + { + glfwMakeContextCurrent(vd->Window); + glfwSwapInterval(0); + } +} + +static void ImGui_ImplGlfw_DestroyWindow(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData) + { + if (vd->WindowOwned) + { +#if !GLFW_HAS_MOUSE_PASSTHROUGH && GLFW_HAS_WINDOW_HOVERED && defined(_WIN32) + HWND hwnd = (HWND)viewport->PlatformHandleRaw; + ::RemovePropA(hwnd, "IMGUI_VIEWPORT"); +#endif + + // Release any keys that were pressed in the window being destroyed and are still held down, + // because we will not receive any release events after window is destroyed. + for (int i = 0; i < IM_ARRAYSIZE(bd->KeyOwnerWindows); i++) + if (bd->KeyOwnerWindows[i] == vd->Window) + ImGui_ImplGlfw_KeyCallback(vd->Window, i, 0, GLFW_RELEASE, 0); // Later params are only used for main viewport, on which this function is never called. + + ImGui_ImplGlfw_ContextMap_Remove(vd->Window); + glfwDestroyWindow(vd->Window); + } + vd->Window = nullptr; + IM_DELETE(vd); + } + viewport->PlatformUserData = viewport->PlatformHandle = nullptr; +} + +static void ImGui_ImplGlfw_ShowWindow(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + +#if defined(_WIN32) + // GLFW hack: Hide icon from task bar + HWND hwnd = (HWND)viewport->PlatformHandleRaw; + if (viewport->Flags & ImGuiViewportFlags_NoTaskBarIcon) + { + LONG ex_style = ::GetWindowLong(hwnd, GWL_EXSTYLE); + ex_style &= ~WS_EX_APPWINDOW; + ex_style |= WS_EX_TOOLWINDOW; + ::SetWindowLong(hwnd, GWL_EXSTYLE, ex_style); + } + + // GLFW hack: install WndProc for mouse source event and WM_NCHITTEST message handler. + ::SetPropA(hwnd, "IMGUI_VIEWPORT", viewport); + vd->PrevWndProc = (WNDPROC)::GetWindowLongPtrW(hwnd, GWLP_WNDPROC); + ::SetWindowLongPtrW(hwnd, GWLP_WNDPROC, (LONG_PTR)ImGui_ImplGlfw_WndProc); + +#if !GLFW_HAS_FOCUS_ON_SHOW + // GLFW hack: GLFW 3.2 has a bug where glfwShowWindow() also activates/focus the window. + // The fix was pushed to GLFW repository on 2018/01/09 and should be included in GLFW 3.3 via a GLFW_FOCUS_ON_SHOW window attribute. + // See https://github.com/glfw/glfw/issues/1189 + // FIXME-VIEWPORT: Implement same work-around for Linux/OSX in the meanwhile. + if (viewport->Flags & ImGuiViewportFlags_NoFocusOnAppearing) + { + ::ShowWindow(hwnd, SW_SHOWNA); + return; + } +#endif +#endif + + glfwShowWindow(vd->Window); +} + +static ImVec2 ImGui_ImplGlfw_GetWindowPos(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + int x = 0, y = 0; + glfwGetWindowPos(vd->Window, &x, &y); + return ImVec2((float)x, (float)y); +} + +static void ImGui_ImplGlfw_SetWindowPos(ImGuiViewport* viewport, ImVec2 pos) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + vd->IgnoreWindowPosEventFrame = ImGui::GetFrameCount(); + glfwSetWindowPos(vd->Window, (int)pos.x, (int)pos.y); +} + +static ImVec2 ImGui_ImplGlfw_GetWindowSize(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + int w = 0, h = 0; + glfwGetWindowSize(vd->Window, &w, &h); + return ImVec2((float)w, (float)h); +} + +static void ImGui_ImplGlfw_SetWindowSize(ImGuiViewport* viewport, ImVec2 size) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; +#if defined(__APPLE__) && !GLFW_HAS_OSX_WINDOW_POS_FIX + // Native OS windows are positioned from the bottom-left corner on macOS, whereas on other platforms they are + // positioned from the upper-left corner. GLFW makes an effort to convert macOS style coordinates, however it + // doesn't handle it when changing size. We are manually moving the window in order for changes of size to be based + // on the upper-left corner. + int x, y, width, height; + glfwGetWindowPos(vd->Window, &x, &y); + glfwGetWindowSize(vd->Window, &width, &height); + glfwSetWindowPos(vd->Window, x, y - height + size.y); +#endif + vd->IgnoreWindowSizeEventFrame = ImGui::GetFrameCount(); + glfwSetWindowSize(vd->Window, (int)size.x, (int)size.y); +} + +static ImVec2 ImGui_ImplGlfw_GetWindowFramebufferScale(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + ImVec2 framebuffer_scale; + ImGui_ImplGlfw_GetWindowSizeAndFramebufferScale(vd->Window, nullptr, &framebuffer_scale); + return framebuffer_scale; +} + +static void ImGui_ImplGlfw_SetWindowTitle(ImGuiViewport* viewport, const char* title) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + glfwSetWindowTitle(vd->Window, title); +} + +static void ImGui_ImplGlfw_SetWindowFocus(ImGuiViewport* viewport) +{ +#if GLFW_HAS_FOCUS_WINDOW + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + glfwFocusWindow(vd->Window); +#else + // FIXME: What are the effect of not having this function? At the moment imgui doesn't actually call SetWindowFocus - we set that up ahead, will answer that question later. + (void)viewport; +#endif +} + +static bool ImGui_ImplGlfw_GetWindowFocus(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + return glfwGetWindowAttrib(vd->Window, GLFW_FOCUSED) != 0; +} + +static bool ImGui_ImplGlfw_GetWindowMinimized(ImGuiViewport* viewport) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + return glfwGetWindowAttrib(vd->Window, GLFW_ICONIFIED) != 0; +} + +#if GLFW_HAS_WINDOW_ALPHA +static void ImGui_ImplGlfw_SetWindowAlpha(ImGuiViewport* viewport, float alpha) +{ + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + glfwSetWindowOpacity(vd->Window, alpha); +} +#endif + +static void ImGui_ImplGlfw_RenderWindow(ImGuiViewport* viewport, void*) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + if (bd->ClientApi == GlfwClientApi_OpenGL) + glfwMakeContextCurrent(vd->Window); +} + +static void ImGui_ImplGlfw_SwapBuffers(ImGuiViewport* viewport, void*) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + if (bd->ClientApi == GlfwClientApi_OpenGL) + { + glfwMakeContextCurrent(vd->Window); + glfwSwapBuffers(vd->Window); + } +} + +//-------------------------------------------------------------------------------------------------------- +// Vulkan support (the Vulkan renderer needs to call a platform-side support function to create the surface) +//-------------------------------------------------------------------------------------------------------- + +// Avoid including so we can build without it +#if GLFW_HAS_VULKAN +#ifndef VULKAN_H_ +#define VK_DEFINE_HANDLE(object) typedef struct object##_T* object; +#if defined(__LP64__) || defined(_WIN64) || defined(__x86_64__) || defined(_M_X64) || defined(__ia64) || defined (_M_IA64) || defined(__aarch64__) || defined(__powerpc64__) +#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef struct object##_T *object; +#else +#define VK_DEFINE_NON_DISPATCHABLE_HANDLE(object) typedef uint64_t object; +#endif +VK_DEFINE_HANDLE(VkInstance) +VK_DEFINE_NON_DISPATCHABLE_HANDLE(VkSurfaceKHR) +struct VkAllocationCallbacks; +enum VkResult { VK_RESULT_MAX_ENUM = 0x7FFFFFFF }; +#endif // VULKAN_H_ +extern "C" { extern GLFWAPI VkResult glfwCreateWindowSurface(VkInstance instance, GLFWwindow* window, const VkAllocationCallbacks* allocator, VkSurfaceKHR* surface); } +static int ImGui_ImplGlfw_CreateVkSurface(ImGuiViewport* viewport, ImU64 vk_instance, const void* vk_allocator, ImU64* out_vk_surface) +{ + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData; + IM_UNUSED(bd); + IM_ASSERT(bd->ClientApi == GlfwClientApi_Vulkan); + VkResult err = glfwCreateWindowSurface((VkInstance)vk_instance, vd->Window, (const VkAllocationCallbacks*)vk_allocator, (VkSurfaceKHR*)out_vk_surface); + return (int)err; +} +#endif // GLFW_HAS_VULKAN + +static void ImGui_ImplGlfw_InitMultiViewportSupport() +{ + // Register platform interface (will be coupled with a renderer interface) + ImGui_ImplGlfw_Data* bd = ImGui_ImplGlfw_GetBackendData(); + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + platform_io.Platform_CreateWindow = ImGui_ImplGlfw_CreateWindow; + platform_io.Platform_DestroyWindow = ImGui_ImplGlfw_DestroyWindow; + platform_io.Platform_ShowWindow = ImGui_ImplGlfw_ShowWindow; + platform_io.Platform_SetWindowPos = ImGui_ImplGlfw_SetWindowPos; + platform_io.Platform_GetWindowPos = ImGui_ImplGlfw_GetWindowPos; + platform_io.Platform_SetWindowSize = ImGui_ImplGlfw_SetWindowSize; + platform_io.Platform_GetWindowSize = ImGui_ImplGlfw_GetWindowSize; + platform_io.Platform_GetWindowFramebufferScale = ImGui_ImplGlfw_GetWindowFramebufferScale; + platform_io.Platform_SetWindowFocus = ImGui_ImplGlfw_SetWindowFocus; + platform_io.Platform_GetWindowFocus = ImGui_ImplGlfw_GetWindowFocus; + platform_io.Platform_GetWindowMinimized = ImGui_ImplGlfw_GetWindowMinimized; + platform_io.Platform_SetWindowTitle = ImGui_ImplGlfw_SetWindowTitle; + platform_io.Platform_RenderWindow = ImGui_ImplGlfw_RenderWindow; + platform_io.Platform_SwapBuffers = ImGui_ImplGlfw_SwapBuffers; +#if GLFW_HAS_WINDOW_ALPHA + platform_io.Platform_SetWindowAlpha = ImGui_ImplGlfw_SetWindowAlpha; +#endif +#if GLFW_HAS_VULKAN + platform_io.Platform_CreateVkSurface = ImGui_ImplGlfw_CreateVkSurface; +#endif + + // Register main window handle (which is owned by the main application, not by us) + // This is mostly for simplicity and consistency, so that our code (e.g. mouse handling etc.) can use same logic for main and secondary viewports. + ImGuiViewport* main_viewport = ImGui::GetMainViewport(); + ImGui_ImplGlfw_ViewportData* vd = IM_NEW(ImGui_ImplGlfw_ViewportData)(); + vd->Window = bd->Window; + vd->WindowOwned = false; + main_viewport->PlatformUserData = vd; + main_viewport->PlatformHandle = (void*)bd->Window; +} + +static void ImGui_ImplGlfw_ShutdownMultiViewportSupport() +{ + ImGui::DestroyPlatformWindows(); +} + +//----------------------------------------------------------------------------- + +// WndProc hook (declared here because we will need access to ImGui_ImplGlfw_ViewportData) +#ifdef _WIN32 +static ImGuiMouseSource GetMouseSourceFromMessageExtraInfo() +{ + LPARAM extra_info = ::GetMessageExtraInfo(); + if ((extra_info & 0xFFFFFF80) == 0xFF515700) + return ImGuiMouseSource_Pen; + if ((extra_info & 0xFFFFFF80) == 0xFF515780) + return ImGuiMouseSource_TouchScreen; + return ImGuiMouseSource_Mouse; +} +static LRESULT CALLBACK ImGui_ImplGlfw_WndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) +{ + ImGui_ImplGlfw_Data* bd = (ImGui_ImplGlfw_Data*)::GetPropA(hWnd, "IMGUI_BACKEND_DATA"); + ImGuiIO& io = ImGui::GetIO(bd->Context); + + WNDPROC prev_wndproc = bd->PrevWndProc; + ImGuiViewport* viewport = (ImGuiViewport*)::GetPropA(hWnd, "IMGUI_VIEWPORT"); + if (viewport != NULL) + if (ImGui_ImplGlfw_ViewportData* vd = (ImGui_ImplGlfw_ViewportData*)viewport->PlatformUserData) + prev_wndproc = vd->PrevWndProc; + + switch (msg) + { + // GLFW doesn't allow to distinguish Mouse vs TouchScreen vs Pen. + // Add support for Win32 (based on imgui_impl_win32), because we rely on _TouchScreen info to trickle inputs differently. + case WM_MOUSEMOVE: case WM_NCMOUSEMOVE: + case WM_LBUTTONDOWN: case WM_LBUTTONDBLCLK: case WM_LBUTTONUP: + case WM_RBUTTONDOWN: case WM_RBUTTONDBLCLK: case WM_RBUTTONUP: + case WM_MBUTTONDOWN: case WM_MBUTTONDBLCLK: case WM_MBUTTONUP: + case WM_XBUTTONDOWN: case WM_XBUTTONDBLCLK: case WM_XBUTTONUP: + io.AddMouseSourceEvent(GetMouseSourceFromMessageExtraInfo()); + break; + + // We have submitted https://github.com/glfw/glfw/pull/1568 to allow GLFW to support "transparent inputs". + // In the meanwhile we implement custom per-platform workarounds here (FIXME-VIEWPORT: Implement same work-around for Linux/OSX!) +#if !GLFW_HAS_MOUSE_PASSTHROUGH && GLFW_HAS_WINDOW_HOVERED + case WM_NCHITTEST: + { + // Let mouse pass-through the window. This will allow the backend to call io.AddMouseViewportEvent() properly (which is OPTIONAL). + // The ImGuiViewportFlags_NoInputs flag is set while dragging a viewport, as want to detect the window behind the one we are dragging. + // If you cannot easily access those viewport flags from your windowing/event code: you may manually synchronize its state e.g. in + // your main loop after calling UpdatePlatformWindows(). Iterate all viewports/platform windows and pass the flag to your windowing system. + if (viewport && (viewport->Flags & ImGuiViewportFlags_NoInputs)) + return HTTRANSPARENT; + break; + } +#endif + default: break; + } + return ::CallWindowProcW(prev_wndproc, hWnd, msg, wParam, lParam); +} +#endif // #ifdef _WIN32 + +//----------------------------------------------------------------------------- + +#if defined(__clang__) +#pragma clang diagnostic pop +#endif + +#endif // #ifndef IMGUI_DISABLE + diff --git a/modules/ui/private/glfw/glfw.h b/modules/ui/private/glfw/glfw.h new file mode 100644 index 0000000..2ef88c6 --- /dev/null +++ b/modules/ui/private/glfw/glfw.h @@ -0,0 +1,74 @@ +// clang-format off +// dear imgui: Platform Backend for GLFW +// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan, WebGPU..) +// (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.) +// (Requires: GLFW 3.1+. Prefer GLFW 3.3+ for full feature support.) + +// Implemented features: +// [X] Platform: Clipboard support. +// [X] Platform: Mouse support. Can discriminate Mouse/TouchScreen/Pen (Windows only). +// [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLFW_KEY_* values are obsolete since 1.87 and not supported since 1.91.5] +// [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. +// [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Resizing cursors requires GLFW 3.4+! Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. +// [X] Platform: Multi-viewport support (multiple windows). Enable with 'io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable'. +// [X] Multiple Dear ImGui contexts support. +// Missing features or Issues: +// [ ] Touch events are only correctly identified as Touch on Windows. This create issues with some interactions. GLFW doesn't provide a way to identify touch inputs from mouse inputs, we cannot call io.AddMouseSourceEvent() to identify the source. We provide a Windows-specific workaround. +// [ ] Missing ImGuiMouseCursor_Wait and ImGuiMouseCursor_Progress cursors. +// [ ] Multi-viewport: ParentViewportID not honored, and so io.ConfigViewportsNoDefaultParent has no effect (minor). + +// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. +// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need. +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +#pragma once +#include "imgui.h" // IMGUI_IMPL_API +#ifndef IMGUI_DISABLE + +struct GLFWwindow; +struct GLFWmonitor; + +// Follow "Getting Started" link and check examples/ folder to learn about using backends! +IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks); +IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks); +IMGUI_IMPL_API bool ImGui_ImplGlfw_InitForOther(GLFWwindow* window, bool install_callbacks); +IMGUI_IMPL_API void ImGui_ImplGlfw_Shutdown(); +IMGUI_IMPL_API void ImGui_ImplGlfw_NewFrame(); + +// Emscripten related initialization phase methods (call after ImGui_ImplGlfw_InitForOpenGL) +#ifdef __EMSCRIPTEN__ +IMGUI_IMPL_API void ImGui_ImplGlfw_InstallEmscriptenCallbacks(GLFWwindow* window, const char* canvas_selector); +//static inline void ImGui_ImplGlfw_InstallEmscriptenCanvasResizeCallback(const char* canvas_selector) { ImGui_ImplGlfw_InstallEmscriptenCallbacks(nullptr, canvas_selector); } } // Renamed in 1.91.0 +#endif + +// GLFW callbacks install +// - When calling Init with 'install_callbacks=true': ImGui_ImplGlfw_InstallCallbacks() is called. GLFW callbacks will be installed for you. They will chain-call user's previously installed callbacks, if any. +// - When calling Init with 'install_callbacks=false': GLFW callbacks won't be installed. You will need to call individual function yourself from your own GLFW callbacks. +IMGUI_IMPL_API void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window); +IMGUI_IMPL_API void ImGui_ImplGlfw_RestoreCallbacks(GLFWwindow* window); + +// GFLW callbacks options: +// - Set 'chain_for_all_windows=true' to enable chaining callbacks for all windows (including secondary viewports created by backends or by user) +IMGUI_IMPL_API void ImGui_ImplGlfw_SetCallbacksChainForAllWindows(bool chain_for_all_windows); + +// GLFW callbacks (individual callbacks to call yourself if you didn't install callbacks) +IMGUI_IMPL_API void ImGui_ImplGlfw_WindowFocusCallback(GLFWwindow* window, int focused); // Since 1.84 +IMGUI_IMPL_API void ImGui_ImplGlfw_CursorEnterCallback(GLFWwindow* window, int entered); // Since 1.84 +IMGUI_IMPL_API void ImGui_ImplGlfw_CursorPosCallback(GLFWwindow* window, double x, double y); // Since 1.87 +IMGUI_IMPL_API void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow* window, int button, int action, int mods); +IMGUI_IMPL_API void ImGui_ImplGlfw_ScrollCallback(GLFWwindow* window, double xoffset, double yoffset); +IMGUI_IMPL_API void ImGui_ImplGlfw_KeyCallback(GLFWwindow* window, int key, int scancode, int action, int mods); +IMGUI_IMPL_API void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c); +IMGUI_IMPL_API void ImGui_ImplGlfw_MonitorCallback(GLFWmonitor* monitor, int event); + +// GLFW helpers +IMGUI_IMPL_API void ImGui_ImplGlfw_Sleep(int milliseconds); +IMGUI_IMPL_API float ImGui_ImplGlfw_GetContentScaleForWindow(GLFWwindow* window); +IMGUI_IMPL_API float ImGui_ImplGlfw_GetContentScaleForMonitor(GLFWmonitor* monitor); + + +#endif // #ifndef IMGUI_DISABLE diff --git a/modules/ui/private/ui.cpp b/modules/ui/private/ui.cpp index cb98cb3..dbd57c2 100644 --- a/modules/ui/private/ui.cpp +++ b/modules/ui/private/ui.cpp @@ -139,7 +139,7 @@ void UserInterface::dockspace_end() void UserInterface::set_dark_theme_colors() { ImGuiStyle &style = ImGui::GetStyle(); - ImVec4(&colors)[55] = style.Colors; + ImVec4(&colors)[60] = style.Colors; style.WindowPadding = ImVec2(0.0f, 0.0f); diff --git a/tools/ci/images/leak_sanitizer/Dockerfile b/tools/ci/images/leak_sanitizer/Dockerfile index bf5e456..5fcf25d 100644 --- a/tools/ci/images/leak_sanitizer/Dockerfile +++ b/tools/ci/images/leak_sanitizer/Dockerfile @@ -52,10 +52,6 @@ RUN git clone --depth=1 https://github.com/llvm/llvm-project.git -b llvmorg-20.1 RUN git clone 'https://git.light7734.com/light7734/light.git' --recursive \ && cd light \ && conan install . \ - -s build_type=Release \ - -s compiler=clang \ - -s compiler.version=20 \ - -s compiler.libcxx=libc++ \ -c tools.system.package_manager:mode=install \ -c tools.cmake.cmaketoolchain:generator=Ninja \ -c tools.build:cxxflags='["-g", "-fno-omit-frame-pointer", "-nostdinc++", "-isystem", "/libcxx_lsan/include/c++/v1/", "-fsanitize=leak"]' \ @@ -63,5 +59,8 @@ RUN git clone 'https://git.light7734.com/light7734/light.git' --recursive \ -c tools.build:exelinkflags='["-L/libcxx_lsan/lib", "-Wl,-rpath,/libcxx_lsan/lib", "-lc++", "-lc++abi", "-fsanitize=leak"]' \ -c tools.info.package_id:confs='["tools.build:cxxflags","tools.build:sharedlinkflags","tools.build:exelinkflags"]' \ -c tools.build:compiler_executables='{"c": "clang", "cpp": "clang++"}' \ + -s build_type=Release \ + -s compiler=clang \ + -s compiler.version=20 \ + -s compiler.libcxx=libc++ \ --build=missing - diff --git a/tools/cmake/dependencies.cmake b/tools/cmake/dependencies.cmake index 98e3ea5..8b3af6c 100644 --- a/tools/cmake/dependencies.cmake +++ b/tools/cmake/dependencies.cmake @@ -4,3 +4,12 @@ find_package(yaml-cpp REQUIRED) find_package(EnTT REQUIRED) find_package(opengl_system REQUIRED) find_package(lz4 REQUIRED) + +find_package(imgui REQUIRED) +add_compile_definitions(IMGUI_IMPL_OPENGL_LOADER_GLAD) +target_link_libraries( + imgui::imgui + INTERFACE glad + INTERFACE opengl::opengl + INTERFACE glfw +)