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SwRasterizer: Corrected the light LUT lookups.

This commit is contained in:
Subv 2017-06-09 18:18:57 -05:00 committed by wwylele
parent f2d4d5c219
commit 2a75837bc3
1 changed files with 7 additions and 6 deletions
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13
src/video_core/swrasterizer/rasterizer.cpp
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@ -177,9 +177,9 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors(const Math::Qu
float sample_loc = scale * distance + bias; float sample_loc = scale * distance + bias;
u8 lutindex = MathUtil::Clamp(floorf(sample_loc * 256.f), 0.0f, 255.0f); u8 lutindex = MathUtil::Clamp(std::floor(sample_loc * 256.f), 0.0f, 255.0f);
float delta = sample_loc * 256 - lutindex; float delta = sample_loc * 256 - lutindex;
dist_atten = LookupLightingLut(lut, lutindex, delta / 256.f); dist_atten = LookupLightingLut(lut, lutindex, delta);
} }
float clamp_highlights = 1.0f; float clamp_highlights = 1.0f;
@ -227,13 +227,14 @@ std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors(const Math::Qu
else else
result = std::max(result, 0.0f); result = std::max(result, 0.0f);
u8 lutindex = MathUtil::Clamp(floorf(result * 256.f), 0.0f, 255.0f); u8 lutindex = MathUtil::Clamp(std::floor(result * 256.f), 0.0f, 255.0f);
float delta = result * 256 - lutindex; float delta = result * 256 - lutindex;
return { lutindex, delta / 256.f }; return { lutindex, delta };
} else { } else {
u8 tmpi = MathUtil::Clamp(floorf(result * 128.f), 0.0f, 127.0f); float flr = std::floor(result * 128.f);
s8 tmpi = MathUtil::Clamp(flr, -128.0f, 127.0f);
float delta = result * 128.f - tmpi; float delta = result * 128.f - tmpi;
return { tmpi & 0xFF, delta / 128.f }; return { tmpi & 0xFF, delta };
} }
}; };