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VertexShaderGen: Sonic epsilon hack for OpenGL ES #9591

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merged 1 commit into from Apr 2, 2021
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VertexShaderGen: Sonic epsilon hack for OpenGL ES #9591

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6 changes: 6 additions & 0 deletions Source/Core/VideoCommon/VertexShaderGen.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -498,6 +498,12 @@ ShaderCode GenerateVertexShaderCode(APIType api_type, const ShaderHostConfig& ho
"o.clipDist1 = clipDist1;\n");
}
}
else
{
// Same depth adjustment for Sonic. Without depth clamping, it unfortunately
// affects non-clipping uses of depth too.
out.Write("o.pos.z = o.pos.z * (1.0 - 1e-7);\n");
}

// Write the true depth value. If the game uses depth textures, then the pixel shader will
// override it with the correct values if not then early z culling will improve speed.
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