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softgpu: Correct dither matrix lookup.

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Oops, need to wrap x/y, of course...
This commit is contained in:
Unknown W. Brackets 2022-01-15 23:51:21 -08:00
parent 6da7765309
commit fc292b127b
1 changed files with 2 additions and 2 deletions
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4
GPU/Software/DrawPixel.cpp
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@ -460,7 +460,7 @@ void SOFTRAST_CALL DrawSinglePixel(int x, int y, int z, int fog, Vec4IntArg colo
const Vec4<int> dst = Vec4<int>::FromRGBA(old_color);
Vec3<int> blended = AlphaBlendingResult(pixelID, prim_color, dst);
if (pixelID.dithering) {
blended += Vec3<int>::AssignToAll(pixelID.cached.ditherMatrix[y * 4 + x]);
blended += Vec3<int>::AssignToAll(pixelID.cached.ditherMatrix[(y & 3) * 4 + (x & 3)]);
}
// ToRGB() always automatically clamps.
@ -469,7 +469,7 @@ void SOFTRAST_CALL DrawSinglePixel(int x, int y, int z, int fog, Vec4IntArg colo
} else {
if (pixelID.dithering) {
// We'll discard alpha anyway.
prim_color += Vec4<int>::AssignToAll(pixelID.cached.ditherMatrix[y * 4 + x]);
prim_color += Vec4<int>::AssignToAll(pixelID.cached.ditherMatrix[(y & 3) * 4 + (x & 3)]);
}
#if defined(_M_SSE)