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Merge pull request #3585 from unknownbrackets/softgpu

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Fix negative texel wrapping in softgpu
This commit is contained in:
Henrik Rydgård 2013-09-03 00:41:23 -07:00
commit 798e2e8eb1
1 changed files with 4 additions and 4 deletions
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8
GPU/Software/Rasterizer.cpp
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@ -104,15 +104,15 @@ static inline void GetTexelCoordinates(int level, float s, float t, unsigned int
if (s > 1.0) s = 1.0;
if (s < 0) s = 0;
} else {
// TODO: Does this work for negative coords?
s = fmod(s, 1.0f);
// Subtracting floor works for negative and positive to discard the non-fractional part.
s -= floor(s);
}
if (gstate.isTexCoordClampedT()) {
if (t > 1.0) t = 1.0;
if (t < 0.0) t = 0.0;
} else {
// TODO: Does this work for negative coords?
t = fmod(t, 1.0f);
// Subtracting floor works for negative and positive to discard the non-fractional part.
t -= floor(t);
}
int width = 1 << (gstate.texsize[level] & 0xf);