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Diffstat (limited to 'src/video_core/swrasterizer/clipper.cpp')
-rw-r--r-- | src/video_core/swrasterizer/clipper.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/video_core/swrasterizer/clipper.cpp b/src/video_core/swrasterizer/clipper.cpp index 6fb923756..7537689b7 100644 --- a/src/video_core/swrasterizer/clipper.cpp +++ b/src/video_core/swrasterizer/clipper.cpp @@ -95,6 +95,17 @@ void ProcessTriangle(const OutputVertex& v0, const OutputVertex& v1, const Outpu static const size_t MAX_VERTICES = 9; static_vector<Vertex, MAX_VERTICES> buffer_a = {v0, v1, v2}; static_vector<Vertex, MAX_VERTICES> buffer_b; + + auto FlipQuaternionIfOpposite = [](auto& a, const auto& b) { + if (Math::Dot(a, b) < float24::Zero()) + a = -a; + }; + + // Flip the quaternions if they are opposite to prevent interpolating them over the wrong + // direction. + FlipQuaternionIfOpposite(buffer_a[1].quat, buffer_a[0].quat); + FlipQuaternionIfOpposite(buffer_a[2].quat, buffer_a[0].quat); + auto* output_list = &buffer_a; auto* input_list = &buffer_b; |