diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/gpu/ops/GrOvalOpFactory.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/gpu/ops/GrOvalOpFactory.cpp b/src/gpu/ops/GrOvalOpFactory.cpp index 10159bba77..9dc1c91e5b 100644 --- a/src/gpu/ops/GrOvalOpFactory.cpp +++ b/src/gpu/ops/GrOvalOpFactory.cpp @@ -195,12 +195,15 @@ private: } fragBuilder->codeAppend("edgeAlpha *= clip;"); if (cgp.fInRoundCapCenters) { + // We compute coverage of the round caps as circles at the butt caps produced + // by the clip planes. The inverse of the clip planes is applied so that there + // is no double counting. fragBuilder->codeAppendf( "half dcap1 = circleEdge.z * (%s - length(circleEdge.xy - " " roundCapCenters.xy));" "half dcap2 = circleEdge.z * (%s - length(circleEdge.xy - " " roundCapCenters.zw));" - "half capAlpha = max(dcap1, 0) + max(dcap2, 0);" + "half capAlpha = (1 - clip) * (max(dcap1, 0) + max(dcap2, 0));" "edgeAlpha = min(edgeAlpha + capAlpha, 1.0);", capRadius.fsIn(), capRadius.fsIn()); } |