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authorbunnei <bunneidev@gmail.com>2016-04-18 02:20:15 +0200
committerbunnei <bunneidev@gmail.com>2016-04-18 02:20:15 +0200
commit142a5dc3f51c0111bb553bd46712733494c58d6b (patch)
treefdb7875b5ef24f6a86d95780cf0926bf4453aa1f /src
parentMerge pull request #1685 from lioncash/hdr (diff)
parentRasterizer: Allow all blend factors for alpha blend-func (diff)
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Diffstat (limited to 'src')
-rw-r--r--src/video_core/rasterizer.cpp99
1 files changed, 42 insertions, 57 deletions
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp
index 5b9ed7c64..0434ad05a 100644
--- a/src/video_core/rasterizer.cpp
+++ b/src/video_core/rasterizer.cpp
@@ -923,92 +923,72 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
if (output_merger.alphablend_enable) {
auto params = output_merger.alpha_blending;
- auto LookupFactorRGB = [&](Regs::BlendFactor factor) -> Math::Vec3<u8> {
+ auto LookupFactor = [&](unsigned channel, Regs::BlendFactor factor) -> u8 {
+ DEBUG_ASSERT(channel < 4);
+
+ const Math::Vec4<u8> blend_const = {
+ static_cast<u8>(output_merger.blend_const.r),
+ static_cast<u8>(output_merger.blend_const.g),
+ static_cast<u8>(output_merger.blend_const.b),
+ static_cast<u8>(output_merger.blend_const.a)
+ };
+
switch (factor) {
- case Regs::BlendFactor::Zero :
- return Math::Vec3<u8>(0, 0, 0);
+ case Regs::BlendFactor::Zero:
+ return 0;
- case Regs::BlendFactor::One :
- return Math::Vec3<u8>(255, 255, 255);
+ case Regs::BlendFactor::One:
+ return 255;
case Regs::BlendFactor::SourceColor:
- return combiner_output.rgb();
+ return combiner_output[channel];
case Regs::BlendFactor::OneMinusSourceColor:
- return Math::Vec3<u8>(255 - combiner_output.r(), 255 - combiner_output.g(), 255 - combiner_output.b());
+ return 255 - combiner_output[channel];
case Regs::BlendFactor::DestColor:
- return dest.rgb();
+ return dest[channel];
case Regs::BlendFactor::OneMinusDestColor:
- return Math::Vec3<u8>(255 - dest.r(), 255 - dest.g(), 255 - dest.b());
+ return 255 - dest[channel];
case Regs::BlendFactor::SourceAlpha:
- return Math::Vec3<u8>(combiner_output.a(), combiner_output.a(), combiner_output.a());
+ return combiner_output.a();
case Regs::BlendFactor::OneMinusSourceAlpha:
- return Math::Vec3<u8>(255 - combiner_output.a(), 255 - combiner_output.a(), 255 - combiner_output.a());
+ return 255 - combiner_output.a();
case Regs::BlendFactor::DestAlpha:
- return Math::Vec3<u8>(dest.a(), dest.a(), dest.a());
+ return dest.a();
case Regs::BlendFactor::OneMinusDestAlpha:
- return Math::Vec3<u8>(255 - dest.a(), 255 - dest.a(), 255 - dest.a());
+ return 255 - dest.a();
case Regs::BlendFactor::ConstantColor:
- return Math::Vec3<u8>(output_merger.blend_const.r, output_merger.blend_const.g, output_merger.blend_const.b);
+ return blend_const[channel];
case Regs::BlendFactor::OneMinusConstantColor:
- return Math::Vec3<u8>(255 - output_merger.blend_const.r, 255 - output_merger.blend_const.g, 255 - output_merger.blend_const.b);
+ return 255 - blend_const[channel];
case Regs::BlendFactor::ConstantAlpha:
- return Math::Vec3<u8>(output_merger.blend_const.a, output_merger.blend_const.a, output_merger.blend_const.a);
+ return blend_const.a();
case Regs::BlendFactor::OneMinusConstantAlpha:
- return Math::Vec3<u8>(255 - output_merger.blend_const.a, 255 - output_merger.blend_const.a, 255 - output_merger.blend_const.a);
-
- default:
- LOG_CRITICAL(HW_GPU, "Unknown color blend factor %x", factor);
- UNIMPLEMENTED();
- break;
- }
-
- return {};
- };
-
- auto LookupFactorA = [&](Regs::BlendFactor factor) -> u8 {
- switch (factor) {
- case Regs::BlendFactor::Zero:
- return 0;
-
- case Regs::BlendFactor::One:
- return 255;
-
- case Regs::BlendFactor::SourceAlpha:
- return combiner_output.a();
-
- case Regs::BlendFactor::OneMinusSourceAlpha:
- return 255 - combiner_output.a();
+ return 255 - blend_const.a();
- case Regs::BlendFactor::DestAlpha:
- return dest.a();
-
- case Regs::BlendFactor::OneMinusDestAlpha:
- return 255 - dest.a();
-
- case Regs::BlendFactor::ConstantAlpha:
- return output_merger.blend_const.a;
-
- case Regs::BlendFactor::OneMinusConstantAlpha:
- return 255 - output_merger.blend_const.a;
+ case Regs::BlendFactor::SourceAlphaSaturate:
+ // Returns 1.0 for the alpha channel
+ if (channel == 3)
+ return 255;
+ return std::min(combiner_output.a(), static_cast<u8>(255 - dest.a()));
default:
- LOG_CRITICAL(HW_GPU, "Unknown alpha blend factor %x", factor);
+ LOG_CRITICAL(HW_GPU, "Unknown blend factor %x", factor);
UNIMPLEMENTED();
break;
}
- return {};
+ return combiner_output[channel];
};
static auto EvaluateBlendEquation = [](const Math::Vec4<u8>& src, const Math::Vec4<u8>& srcfactor,
@@ -1060,10 +1040,15 @@ static void ProcessTriangleInternal(const Shader::OutputVertex& v0,
MathUtil::Clamp(result.a(), 0, 255));
};
- auto srcfactor = Math::MakeVec(LookupFactorRGB(params.factor_source_rgb),
- LookupFactorA(params.factor_source_a));
- auto dstfactor = Math::MakeVec(LookupFactorRGB(params.factor_dest_rgb),
- LookupFactorA(params.factor_dest_a));
+ auto srcfactor = Math::MakeVec(LookupFactor(0, params.factor_source_rgb),
+ LookupFactor(1, params.factor_source_rgb),
+ LookupFactor(2, params.factor_source_rgb),
+ LookupFactor(3, params.factor_source_a));
+
+ auto dstfactor = Math::MakeVec(LookupFactor(0, params.factor_dest_rgb),
+ LookupFactor(1, params.factor_dest_rgb),
+ LookupFactor(2, params.factor_dest_rgb),
+ LookupFactor(3, params.factor_dest_a));
blend_output = EvaluateBlendEquation(combiner_output, srcfactor, dest, dstfactor, params.blend_equation_rgb);
blend_output.a() = EvaluateBlendEquation(combiner_output, srcfactor, dest, dstfactor, params.blend_equation_a).a();