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author | Darius Goad <alegend45@gmail.com> | 2015-02-07 18:43:08 +0100 |
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committer | Darius Goad <alegend45@gmail.com> | 2015-02-10 03:41:06 +0100 |
commit | 536958fb2940c9418b7e42e75eb245ae7527908e (patch) | |
tree | 8ff1ab719f3edc601cdc9f9dcef614dcccc50ede /src/video_core/rasterizer.cpp | |
parent | Merge pull request #541 from lioncash/nits (diff) | |
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Diffstat (limited to 'src/video_core/rasterizer.cpp')
-rw-r--r-- | src/video_core/rasterizer.cpp | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/src/video_core/rasterizer.cpp b/src/video_core/rasterizer.cpp index 5920477eb..06fd8d140 100644 --- a/src/video_core/rasterizer.cpp +++ b/src/video_core/rasterizer.cpp @@ -616,17 +616,60 @@ void ProcessTriangle(const VertexShader::OutputVertex& v0, LookupFactorA(params.factor_source_a)); auto dstfactor = Math::MakeVec(LookupFactorRGB(params.factor_dest_rgb), LookupFactorA(params.factor_dest_a)); + + auto src_result = (combiner_output * srcfactor).Cast<int>(); + auto dst_result = (dest * dstfactor).Cast<int>(); switch (params.blend_equation_rgb) { case params.Add: { - auto result = (combiner_output * srcfactor + dest * dstfactor) / 255; + auto result = (src_result + dst_result) / 255; result.r() = std::min(255, result.r()); result.g() = std::min(255, result.g()); result.b() = std::min(255, result.b()); combiner_output = result.Cast<u8>(); break; } + + case params.Subtract: + { + auto result = (src_result - dst_result) / 255; + result.r() = std::max(0, result.r()); + result.g() = std::max(0, result.g()); + result.b() = std::max(0, result.b()); + combiner_output = result.Cast<u8>(); + break; + } + + case params.ReverseSubtract: + { + auto result = (dst_result - src_result) / 255; + result.r() = std::max(0, result.r()); + result.g() = std::max(0, result.g()); + result.b() = std::max(0, result.b()); + combiner_output = result.Cast<u8>(); + break; + } + + case params.Min: + { + Math::Vec4<int> result; + result.r() = std::min(src_result.r(),dst_result.r()); + result.g() = std::min(src_result.g(),dst_result.g()); + result.b() = std::min(src_result.b(),dst_result.b()); + combiner_output = result.Cast<u8>(); + break; + } + + case params.Max: + { + Math::Vec4<int> result; + result.r() = std::max(src_result.r(),dst_result.r()); + result.g() = std::max(src_result.g(),dst_result.g()); + result.b() = std::max(src_result.b(),dst_result.b()); + combiner_output = result.Cast<u8>(); + break; + } default: LOG_CRITICAL(HW_GPU, "Unknown RGB blend equation %x", params.blend_equation_rgb.Value()); |