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rasterizer: Implemented AddSigned combiner op.
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@ -499,6 +499,16 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
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return result.Cast<u8>();
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}
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case Operation::AddSigned:
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{
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// TODO(bunnei): Verify that the color conversion from (float) 0.5f to (byte) 128 is correct
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auto result = input[0].Cast<int>() + input[1].Cast<int>() - Math::MakeVec<int>(128, 128, 128);
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result.r() = MathUtil::Clamp<int>(result.r(), 0, 255);
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result.g() = MathUtil::Clamp<int>(result.g(), 0, 255);
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result.b() = MathUtil::Clamp<int>(result.b(), 0, 255);
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return result.Cast<u8>();
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}
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case Operation::Lerp:
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return ((input[0] * input[2] + input[1] * (Math::MakeVec<u8>(255, 255, 255) - input[2]).Cast<u8>()) / 255).Cast<u8>();
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