97 lines
3.1 KiB
C++
97 lines
3.1 KiB
C++
#include <renderer/dx/shader.hpp>
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#include <renderer/dx/shared_context.hpp>
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#include <renderer/dx/vertex_layout.hpp>
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namespace lt {
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dxVertexLayout::dxVertexLayout(
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Ref<Shader> shader,
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const std::vector<std::pair<std::string, VertexElementType>> &elements,
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Ref<dxSharedContext> sharedContext
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)
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: m_context(sharedContext)
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, m_input_layout(nullptr)
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{
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auto inputElementsDesc = std::vector<D3D11_INPUT_ELEMENT_DESC> {};
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inputElementsDesc.reserve(elements.size());
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// extract elements desc
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for (const auto &element : elements)
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{
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inputElementsDesc.emplace_back(
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D3D11_INPUT_ELEMENT_DESC { element.first.c_str(),
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NULL,
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get_dxgi_format(element.second),
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0u,
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D3D11_APPEND_ALIGNED_ELEMENT,
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D3D11_INPUT_PER_VERTEX_DATA,
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0u }
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);
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}
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auto dxpShader = std::dynamic_pointer_cast<dxShader>(shader);
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ensure(dxpShader, "Failed to cast 'Shader' to 'dxShader'");
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// create input layout (vertex layout)
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auto hr = HRESULT {};
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dxc(m_context->get_device()->CreateInputLayout(
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&inputElementsDesc[0],
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inputElementsDesc.size(),
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dxpShader->get_vertex_blob().Get()->GetBufferPointer(),
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dxpShader->get_vertex_blob().Get()->GetBufferSize(),
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&m_input_layout
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));
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}
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dxVertexLayout::~dxVertexLayout()
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{
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un_bind();
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}
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void dxVertexLayout::bind()
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{
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m_context->get_device_context()->IASetInputLayout(m_input_layout.Get());
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}
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void dxVertexLayout::un_bind()
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{
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m_context->get_device_context()->IASetInputLayout(nullptr);
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}
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auto dxVertexLayout::get_dxgi_format(VertexElementType type) -> DXGI_FORMAT
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{
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switch (type)
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{
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/* byte */
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case lt::VertexElementType::Byte1: return DXGI_FORMAT_R8_SINT;
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case lt::VertexElementType::Byte2: return DXGI_FORMAT_R8G8_SINT;
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case lt::VertexElementType::Byte4: return DXGI_FORMAT_R8_SINT;
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/* ubyte */
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case lt::VertexElementType::UByte1: return DXGI_FORMAT_R8_UINT;
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case lt::VertexElementType::UByte2: return DXGI_FORMAT_R8G8_UINT;
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case lt::VertexElementType::UByte4: return DXGI_FORMAT_R8G8B8A8_UINT;
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/* int */
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case lt::VertexElementType::Int1: return DXGI_FORMAT_R32_SINT;
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case lt::VertexElementType::Int2: return DXGI_FORMAT_R32G32_SINT;
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case lt::VertexElementType::Int3: return DXGI_FORMAT_R32G32B32_SINT;
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case lt::VertexElementType::Int4: return DXGI_FORMAT_R32G32B32A32_SINT;
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/* uint */
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case lt::VertexElementType::UInt1: return DXGI_FORMAT_R32_UINT;
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case lt::VertexElementType::UInt2: return DXGI_FORMAT_R32G32_UINT;
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case lt::VertexElementType::UInt3: return DXGI_FORMAT_R32G32B32_UINT;
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case lt::VertexElementType::UInt4: return DXGI_FORMAT_R32G32B32A32_UINT;
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/* float */
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case lt::VertexElementType::Float1: return DXGI_FORMAT_R32_FLOAT;
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case lt::VertexElementType::Float2: return DXGI_FORMAT_R32G32_FLOAT;
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case lt::VertexElementType::Float3: return DXGI_FORMAT_R32G32B32_FLOAT;
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case lt::VertexElementType::Float4: return DXGI_FORMAT_R32G32B32A32_FLOAT;
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default: ensure(false, "Invalid 'VertexElementType'"); return DXGI_FORMAT_UNKNOWN;
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}
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}
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} // namespace lt
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