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Fix Dot3RGB and Dot3RGBA according to GL spec

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This commit is contained in:
Darius Goad 2015-02-24 13:56:31 -06:00
parent 2a0f38ddc5
commit 862183906e
1 changed files with 10 additions and 1 deletions
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11
src/video_core/rasterizer.cpp
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@ -440,6 +440,7 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
return result.Cast<u8>();
}
case Operation::Dot3RGB:
case Operation::Dot3RGBA:
{
//return std::inner_product(begin(a), end(a), begin(b), 0.0);
@ -493,9 +494,17 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
case Operation::Subtract:
return std::max(0, (int)input[0] - (int)input[1]);
case Operation::Dot3RGBA:
case Operation::Dot3RGB:
return 255;
case Operation::Dot3RGBA:
//return std::inner_product(begin(a), end(a), begin(b), 0.0);
int a[] = { input[0].r(), input[0].g(), input[0].b() }; //int a[] = { 1, 3, -5 };
int b[] = { input[1].r(), input[1].g(), input[1].b() };
auto res = std::inner_product(a, a + sizeof(a) / sizeof(a[0]), b, 0);
return res;
case Operation::MultiplyThenAdd:
return std::min(255, (input[0] * input[1] + 255 * input[2]) / 255);