diff options
| author | JMC47 <JMC4789@gmail.com> | 2021-04-23 14:06:02 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-04-23 14:06:02 -0400 |
| commit | 4ab92d47574aa2388d39d6740ac85cc3324a15b8 (patch) | |
| tree | 6c3c47fda1e158d2a0c40a02b82e0117ff554265 /Source/Core/VideoBackends/Software/Clipper.cpp | |
| parent | 4d37dad20d230b003b74e38ff4c5af68e6ed232e (diff) | |
| parent | 5b1c6328626557bbb25fe290738e7c6e7069af68 (diff) | |
Merge pull request #9350 from Pokechu22/sw-viewport
Software: Invert backface test when viewport is positive
Diffstat (limited to 'Source/Core/VideoBackends/Software/Clipper.cpp')
| -rw-r--r-- | Source/Core/VideoBackends/Software/Clipper.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Source/Core/VideoBackends/Software/Clipper.cpp b/Source/Core/VideoBackends/Software/Clipper.cpp index 417bc63fa3..41a5e07d07 100644 --- a/Source/Core/VideoBackends/Software/Clipper.cpp +++ b/Source/Core/VideoBackends/Software/Clipper.cpp @@ -488,6 +488,11 @@ bool CullTest(const OutputVertexData* v0, const OutputVertexData* v1, const Outp float normalZDir = (x0 * w2 - x2 * w0) * y1 + (x2 * y0 - x0 * y2) * w1 + (y2 * w0 - y0 * w2) * x1; backface = normalZDir <= 0.0f; + // Jimmie Johnson's Anything with an Engine has a positive viewport, while other games have a + // negative viewport. The positive viewport does not require vertices to be vertically mirrored, + // but the backface test does need to be inverted for things to be drawn. + if (xfmem.viewport.ht > 0) + backface = !backface; // TODO: Are these tests / the definition of backface above backwards? if ((bpmem.genMode.cullmode == CullMode::Back || bpmem.genMode.cullmode == CullMode::All) && |