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Pica/Rasterizer: Fix garbage pixels at triangle borders.

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This commit is contained in:
Tony Wasserka 2015-01-02 01:01:06 +01:00
parent 638b370fb5
commit 3cb22d31a7
1 changed files with 3 additions and 1 deletions
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4
src/video_core/rasterizer.cpp
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@ -101,7 +101,9 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
{
// vertex positions in rasterizer coordinates
auto FloatToFix = [](float24 flt) {
return Fix12P4(static_cast<unsigned short>(flt.ToFloat32() * 16.0f));
// TODO: Rounding here is necessary to prevent garbage pixels at
// triangle borders. Is it that the correct solution, though?
return Fix12P4(static_cast<unsigned short>(round(flt.ToFloat32() * 16.0f)));
};
auto ScreenToRasterizerCoordinates = [FloatToFix](const Math::Vec3<float24> vec) {
return Math::Vec3<Fix12P4>{FloatToFix(vec.x), FloatToFix(vec.y), FloatToFix(vec.z)};