commit c52968170df32d88bc4cb27a80a0beed7586e0d3
author Greg Daniel <egdaniel@google.com> Fri Feb 28 13:06:02 2020 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Fri Feb 28 18:45:15 2020 +0000
tree faf842445b59cd2853bdb1cc1d2b52e54923b6b2
parent 262796edeba69c82510b767e37e1868dbd3f9176

Fix CompatibleCoverageAsAlpha flag when reducing src-over to src.

Change-Id: I087ff64e0f23aee15ac2bf7b9d3c450e28400cef
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/274036
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

src/gpu/GrXferProcessor.cpp

diff --git a/src/gpu/GrXferProcessor.cpp b/src/gpu/GrXferProcessor.cpp
index 359dfb0..bcfa550 100644
--- a/src/gpu/GrXferProcessor.cpp
+++ b/src/gpu/GrXferProcessor.cpp
@@ -166,6 +166,9 @@
         result = GrPorterDuffXPFactory::SrcOverAnalysisProperties(color, coverage, caps,
                                                                   clampType);
     }
+    if (coverage == GrProcessorAnalysisCoverage::kNone) {
+        result |= AnalysisProperties::kCompatibleWithCoverageAsAlpha;
+    }
     SkASSERT(!(result & AnalysisProperties::kRequiresDstTexture));
     if ((result & AnalysisProperties::kReadsDstInShader) &&
         !caps.shaderCaps()->dstReadInShaderSupport()) {