81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
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#include <engine/platform/graphics/directx/shared_context.hpp>
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#include <engine/platform/graphics/directx/texture.hpp>
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namespace Light {
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dxTexture::dxTexture(
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unsigned int width,
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unsigned int height,
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unsigned int components,
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unsigned char *pixels,
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Ref<dxSharedContext> sharedContext,
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const std::string &filePath
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)
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: Texture(filePath)
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, m_Context(sharedContext)
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, m_Texture2D(nullptr)
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, m_ShaderResourceView(nullptr)
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, m_SamplerState(nullptr)
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{
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// texture2d desc
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D3D11_TEXTURE2D_DESC t2dDesc = {};
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t2dDesc.Width = width;
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t2dDesc.Height = height;
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t2dDesc.MipLevels = 0u;
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t2dDesc.ArraySize = 1u;
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t2dDesc.Format = components == 4u ? DXGI_FORMAT_R8G8B8A8_UNORM :
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components == 3u ? DXGI_FORMAT_R8G8B8A8_UNORM :
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// #todo: figure out what to do with this bitch ._.
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components == 2u ? DXGI_FORMAT_R8G8_UNORM :
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components == 1u ? DXGI_FORMAT_R8_UNORM :
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DXGI_FORMAT_UNKNOWN;
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t2dDesc.SampleDesc.Count = 1u;
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t2dDesc.SampleDesc.Quality = 0u;
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t2dDesc.Usage = D3D11_USAGE_DEFAULT;
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t2dDesc.BindFlags = D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET;
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t2dDesc.CPUAccessFlags = NULL;
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t2dDesc.MiscFlags = D3D11_RESOURCE_MISC_GENERATE_MIPS;
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// create texture
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HRESULT hr;
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DXC(m_Context->GetDevice()->CreateTexture2D(&t2dDesc, nullptr, &m_Texture2D));
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m_Context->GetDeviceContext()
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->UpdateSubresource(m_Texture2D.Get(), 0u, nullptr, pixels, width * 4u, 0u);
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m_Texture2D->GetDesc(&t2dDesc);
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// shader resource view desc
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D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
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srvDesc.Format = t2dDesc.Format;
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srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
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srvDesc.Texture2D.MostDetailedMip = 0u;
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srvDesc.Texture2D.MipLevels = -1;
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// create shader resource view
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m_Context->GetDevice()
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->CreateShaderResourceView(m_Texture2D.Get(), &srvDesc, &m_ShaderResourceView);
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m_Context->GetDeviceContext()->GenerateMips(m_ShaderResourceView.Get());
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// sampler desc
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D3D11_SAMPLER_DESC sDesc = {};
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sDesc.Filter = D3D11_FILTER_MIN_MAG_MIP_LINEAR;
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sDesc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
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sDesc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
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sDesc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
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sDesc.MinLOD = 0.0f;
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sDesc.MipLODBias = 0.0f;
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sDesc.MaxLOD = D3D11_FLOAT32_MAX;
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// create sampler
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m_Context->GetDevice()->CreateSamplerState(&sDesc, &m_SamplerState);
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}
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void dxTexture::Bind(unsigned int slot /* = 0u */)
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{
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m_Context->GetDeviceContext()->PSSetSamplers(slot, 1u, m_SamplerState.GetAddressOf());
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m_Context->GetDeviceContext()
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->PSSetShaderResources(slot, 1u, m_ShaderResourceView.GetAddressOf());
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}
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} // namespace Light
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