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Hack: Incomplete impl. for Dot3RGBA combiner operation.

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This commit is contained in:
bunnei 2015-02-18 17:32:18 -05:00 committed by Darius Goad
parent 5ea57436ab
commit 2a0f38ddc5
2 changed files with 16 additions and 1 deletions
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3
src/video_core/pica.h
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@ -261,7 +261,8 @@ struct Regs {
AddSigned = 3,
Lerp = 4,
Subtract = 5,
Dot3RGB = 6,
Dot3RGBA = 7,
MultiplyThenAdd = 8,
AddThenMultiply = 9,
};

14
src/video_core/rasterizer.cpp
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@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include <algorithm>
#include <numeric>
#include "common/common_types.h"
#include "common/math_util.h"
@ -439,6 +440,16 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
return result.Cast<u8>();
}
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, res, res };
}
case Operation::MultiplyThenAdd:
{
auto result = (input[0] * input[1] + 255 * input[2].Cast<int>()) / 255;
@ -482,6 +493,9 @@ static void ProcessTriangleInternal(const VertexShader::OutputVertex& v0,
case Operation::Subtract:
return std::max(0, (int)input[0] - (int)input[1]);
case Operation::Dot3RGBA:
return 255;
case Operation::MultiplyThenAdd:
return std::min(255, (input[0] * input[1] + 255 * input[2]) / 255);