From b53bdf16aa8fa2454697afaa0c3f03df7581f17c Mon Sep 17 00:00:00 2001
From: Chris Dalton <csmartdalton@google.com>
Date: Thu, 16 Jan 2020 13:28:32 -0700
Subject: [PATCH] Fix single-pass tessellator wedges

Change-Id: I5d7f4e2c0c3884e84633695967e6c4ed7c480d80
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/264819
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>
---
 src/gpu/tessellate/GrTessellatePathOp.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gpu/tessellate/GrTessellatePathOp.cpp b/src/gpu/tessellate/GrTessellatePathOp.cpp
index c3f4ef68c8..1722f65a3d 100644
--- a/src/gpu/tessellate/GrTessellatePathOp.cpp
+++ b/src/gpu/tessellate/GrTessellatePathOp.cpp
@@ -27,7 +27,9 @@ void GrTessellatePathOp::onPrepare(GrOpFlushState* state) {
     int maxVertexCount = GrPathParser::MaxPossibleWedgeVertices(fPath);
     if (auto* wedgeData = (SkPoint*)state->makeVertexSpace(
             sizeof(SkPoint), maxVertexCount, &fWedgeBuffer, &fBaseWedgeVertex)) {
-        fWedgeVertexCount = GrPathParser::EmitCenterWedges(fPath, wedgeData);
+        if (!(fWedgeVertexCount = GrPathParser::EmitCenterWedges(fPath, wedgeData))) {
+            fWedgeBuffer.reset();
+        }
         state->putBackVertices(maxVertexCount - fWedgeVertexCount, sizeof(SkPoint));
     }
 }