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Renderer: Use interface blocks for ImGui shaders

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This commit is contained in:
Stenzek
2019-10-02 12:52:45 +10:00
parent c98a5f7dfd
commit af849126b3
3 changed files with 46 additions and 89 deletions
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43
Source/Core/VideoCommon/FramebufferShaderGen.cpp
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@ -14,9 +14,9 @@ static APIType GetAPIType()
static void EmitUniformBufferDeclaration(std::stringstream& ss)
{
if (GetAPIType() == APIType::D3D)
ss << "cbuffer UBO : register(b0)\n";
ss << "cbuffer PSBlock : register(b0)\n";
else
ss << "UBO_BINDING(std140, 1) uniform UBO\n";
ss << "UBO_BINDING(std140, 1) uniform PSBlock\n";
}
static void EmitSamplerDeclarations(std::stringstream& ss, u32 start = 0, u32 end = 1,
@ -661,4 +661,43 @@ std::string GenerateEFBRestorePixelShader()
return ss.str();
}
std::string GenerateImGuiVertexShader()
{
std::stringstream ss;
// Uniform buffer contains the viewport size, and we transform in the vertex shader.
EmitUniformBufferDeclaration(ss);
ss << "{\n";
ss << "float2 u_rcp_viewport_size_mul2;\n";
ss << "};\n\n";
EmitVertexMainDeclaration(ss, 1, 1, true, 1, 1);
ss << "{\n"
<< " v_tex0 = float3(rawtex0.xy, 0.0);\n"
<< " v_col0 = rawcolor0;\n"
<< " opos = float4(rawpos.x * u_rcp_viewport_size_mul2.x - 1.0,"
<< " 1.0 - rawpos.y * u_rcp_viewport_size_mul2.y, 0.0, 1.0);\n";
// NDC space is flipped in Vulkan.
if (GetAPIType() == APIType::Vulkan)
ss << " opos.y = -opos.y;\n";
ss << "}\n";
return ss.str();
}
std::string GenerateImGuiPixelShader()
{
std::stringstream ss;
EmitSamplerDeclarations(ss, 0, 1, false);
EmitPixelMainDeclaration(ss, 1, 1);
ss << "{\n";
ss << " ocol0 = ";
EmitSampleTexture(ss, 0, "float3(v_tex0.xy, 0.0)");
ss << " * v_col0;\n";
ss << "}\n";
return ss.str();
}
} // namespace FramebufferShaderGen