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-rw-r--r--src/video_core/swrasterizer/rasterizer.cpp6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/video_core/swrasterizer/rasterizer.cpp b/src/video_core/swrasterizer/rasterizer.cpp
index 2d1daa24a..2b85ac86c 100644
--- a/src/video_core/swrasterizer/rasterizer.cpp
+++ b/src/video_core/swrasterizer/rasterizer.cpp
@@ -117,7 +117,9 @@ static std::tuple<float24, float24, PAddr> ConvertCubeCoord(float24 u, float24 v
float LookupLightingLut(size_t lut_index, float index) {
- unsigned index_i = static_cast<unsigned>(MathUtil::Clamp(floor(index * 256), 0.0f, 1.0f));
+ index *= 256;
+
+ unsigned index_i = static_cast<unsigned>(MathUtil::Clamp(floor(index), 0.0f, 255.0f));
float index_f = index - index_i;
@@ -126,7 +128,7 @@ float LookupLightingLut(size_t lut_index, float index) {
float lut_value = g_state.lighting.luts[lut_index][index_i].ToFloat();
float lut_diff = g_state.lighting.luts[lut_index][index_i].DiffToFloat();
- return lut_value + lut_diff * index_f;
+ return lut_value + lut_diff * index_f / 256.f;
}
std::tuple<Math::Vec4<u8>, Math::Vec4<u8>> ComputeFragmentsColors(const Math::Quaternion<float>& normquat, const Math::Vec3<float>& view) {