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ShaderGen: Emit location qualifiers for SPV without interface blocks

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Required for GLSL post-processing with OpenGL 3.1.
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Stenzek 2025-07-09 21:15:55 +10:00
parent 2d29c63708
commit 742cfcb12b
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1 changed files with 28 additions and 0 deletions
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28
src/util/shadergen.cpp
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@ -559,14 +559,28 @@ void ShaderGen::DeclareVertexEntryPoint(
{
const char* qualifier = GetInterpolationQualifier(false, msaa, ssaa, true);
u32 location = 0;
for (u32 i = 0; i < num_color_outputs; i++)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
ss << qualifier << (noperspective_color ? "noperspective " : "") << "out float4 v_col" << i << ";\n";
}
for (u32 i = 0; i < num_texcoord_outputs; i++)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
ss << qualifier << "out float2 v_tex" << i << ";\n";
}
for (const auto& [qualifiers, name] : additional_outputs)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
const char* qualifier_to_use = (std::strlen(qualifiers) > 0) ? qualifiers : qualifier;
ss << qualifier_to_use << " out " << name << ";\n";
}
@ -656,14 +670,28 @@ void ShaderGen::DeclareFragmentEntryPoint(
{
const char* qualifier = GetInterpolationQualifier(false, msaa, ssaa, false);
u32 location = 0;
for (u32 i = 0; i < num_color_inputs; i++)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
ss << qualifier << (noperspective_color ? "noperspective " : "") << "in float4 v_col" << i << ";\n";
}
for (u32 i = 0; i < num_texcoord_inputs; i++)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
ss << qualifier << "in float2 v_tex" << i << ";\n";
}
for (const auto& [qualifiers, name] : additional_inputs)
{
if (m_spirv)
ss << "layout(location = " << location++ << ") ";
const char* qualifier_to_use = (std::strlen(qualifiers) > 0) ? qualifiers : qualifier;
ss << qualifier_to_use << " in " << name << ";\n";
}