diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/video_core/rasterizer.cpp | 99 |
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(); |