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SoftGPU: Clip lines entirely outside early.

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Some were getting through, which may mean the line clipping isn't working
so well...
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2017-05-14 18:28:47 -07:00
parent 672ce51a2a
commit 9d64597fb3
1 changed files with 5 additions and 4 deletions
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9
GPU/Software/Clipper.cpp
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@@ -246,6 +246,11 @@ void ProcessLine(VertexData& v0, VertexData& v1)
int mask1 = CalcClipMask(v1.clippos);
int mask = mask0 | mask1;
if (mask0 & mask1) {
// Even if clipping is disabled, we can discard if the line is entirely outside.
return;
}
if (mask && (gstate.clipEnable & 0x1)) {
// discard if any vertex is outside the near clipping plane
if (mask & CLIP_NEG_Z_BIT)
@@ -257,10 +262,6 @@ void ProcessLine(VertexData& v0, VertexData& v1)
CLIP_LINE(CLIP_NEG_Y_BIT, 0, 1, 0, 1);
CLIP_LINE(CLIP_POS_Z_BIT, 0, 0, 0, 1);
CLIP_LINE(CLIP_NEG_Z_BIT, 0, 0, 1, 1);
} else if (mask0 & mask1) {
// If clipping is disabled, only discard the current primitive
// if both vertices lie outside one of the clipping planes
return;
}
VertexData data[2] = { *Vertices[0], *Vertices[1] };