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Improved performance of FromAttributeBuffer 

Ternary operator is optimized by the compiler
whereas std::min() is meant to return a value.

I've noticed a 5%-10% emulation speed increase.
This commit is contained in:
Huw Pascoe 2017-09-17 15:42:45 +01:00
parent 255fd8768d
commit a234e4c200
1 changed files with 2 additions and 1 deletions
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3
src/video_core/shader/shader.cpp
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@ -52,7 +52,8 @@ OutputVertex OutputVertex::FromAttributeBuffer(const RasterizerRegs& regs,
// The hardware takes the absolute and saturates vertex colors like this, *before* doing
// interpolation
for (unsigned i = 0; i < 4; ++i) {
ret.color[i] = float24::FromFloat32(std::fmin(std::fabs(ret.color[i].ToFloat32()), 1.0f));
float c = std::fabs(ret.color[i].ToFloat32());
ret.color[i] = float24::FromFloat32(c < 1.0f ? c : 1.0f);
}
LOG_TRACE(HW_GPU, "Output vertex: pos(%.2f, %.2f, %.2f, %.2f), quat(%.2f, %.2f, %.2f, %.2f), "