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ShaderGen: Omit some unused varyings when possible

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Removes the clipPos varying unless slow-depth is used, and the
clipDistance varyings if geometry shaders are not used.
This commit is contained in:
Stenzek
2019-01-23 18:11:17 +10:00
parent 3627ef8a04
commit 68cb24172b
7 changed files with 107 additions and 74 deletions
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14
Source/Core/VideoCommon/UberShaderPixel.cpp
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@ -59,7 +59,7 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
out.Write("// Pixel UberShader for %u texgens%s%s\n", numTexgen,
early_depth ? ", early-depth" : "", per_pixel_depth ? ", per-pixel depth" : "");
WritePixelShaderCommonHeader(out, ApiType, numTexgen, per_pixel_lighting, bounding_box);
WritePixelShaderCommonHeader(out, ApiType, numTexgen, host_config, bounding_box);
WriteUberShaderCommonHeader(out, ApiType, host_config);
if (per_pixel_lighting)
WriteLightingFunction(out);
@ -106,7 +106,7 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
if (host_config.backend_geometry_shaders || ApiType == APIType::Vulkan)
{
out.Write("VARYING_LOCATION(0) in VertexData {\n");
GenerateVSOutputMembers(out, ApiType, numTexgen, per_pixel_lighting,
GenerateVSOutputMembers(out, ApiType, numTexgen, host_config,
GetInterpolationQualifier(msaa, ssaa, true, true));
if (stereo)
@ -122,7 +122,8 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
// Let's set up attributes
for (u32 i = 0; i < numTexgen; ++i)
out.Write("%s in float3 tex%d;\n", GetInterpolationQualifier(msaa, ssaa), i);
out.Write("%s in float4 clipPos;\n", GetInterpolationQualifier(msaa, ssaa));
if (!host_config.fast_depth_calc)
out.Write("%s in float4 clipPos;\n", GetInterpolationQualifier(msaa, ssaa));
if (per_pixel_lighting)
{
out.Write("%s in float3 Normal;\n", GetInterpolationQualifier(msaa, ssaa));
@ -709,8 +710,11 @@ ShaderCode GenPixelShader(APIType ApiType, const ShaderHostConfig& host_config,
for (u32 i = 0; i < numTexgen; ++i)
out.Write(",\n in %s float3 tex%u : TEXCOORD%u", GetInterpolationQualifier(msaa, ssaa), i,
i);
out.Write("\n,\n in %s float4 clipPos : TEXCOORD%u", GetInterpolationQualifier(msaa, ssaa),
numTexgen);
if (!host_config.fast_depth_calc)
{
out.Write("\n,\n in %s float4 clipPos : TEXCOORD%u", GetInterpolationQualifier(msaa, ssaa),
numTexgen);
}
if (per_pixel_lighting)
{
out.Write(",\n in %s float3 Normal : TEXCOORD%u", GetInterpolationQualifier(msaa, ssaa),