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Merge pull request #16440 from unknownbrackets/softgpu-inversion

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softgpu: Allow inversions when w >= -1.0
This commit is contained in:
Henrik Rydgård
2022-11-26 23:01:19 +01:00
committed by GitHub
parent 0b375bb357 909f3feaea
commit 8952110486
1 changed files with 8 additions and 5 deletions
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13
GPU/Software/Clipper.cpp
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@@ -50,13 +50,16 @@ inline float clip_dotprod(const ClipVertexData &vert, float A, float B, float C,
}
inline void clip_interpolate(ClipVertexData &dest, float t, const ClipVertexData &a, const ClipVertexData &b) {
dest.Lerp(t, a, b);
if (different_signs(a.clippos.w, b.clippos.w)) {
dest.v.screenpos.x = 0x7FFFFFFF;
} else {
dest.v.screenpos = TransformUnit::ClipToScreen(dest.clippos);
dest.v.clipw = dest.clippos.w;
if (a.clippos.w < -1.0f || b.clippos.w < -1.0f) {
dest.v.screenpos.x = 0x7FFFFFFF;
return;
}
}
dest.Lerp(t, a, b);
dest.v.screenpos = TransformUnit::ClipToScreen(dest.clippos);
dest.v.clipw = dest.clippos.w;
}
#define CLIP_POLY( PLANE_BIT, A, B, C, D ) \