commit 0db1b53a849ae145a32cd1315c9f4f03430e90cb
author Brian Salomon <bsalomon@google.com> Wed Jul 12 15:21:43 2017 -0400
committer Brian Salomon <bsalomon@google.com> Wed Jul 12 19:47:56 2017 +0000
tree 78804265d6c0bf0cb9269cbd790c5d9e4e02f227
parent 5b8e2b899e96b30c0e5f73b1887f75b18a7d0a79

Fix assert in lattice op triggered by GLProgramsTest

Change-Id: Ia495a8c7bc7dd0832da7ad48c6dbdf4c0dc67119
Reviewed-on: https://skia-review.googlesource.com/22729
Reviewed-by: Robert Phillips <robertphillips@google.com>

src/gpu/ops/GrLatticeOp.cpp

diff --git a/src/gpu/ops/GrLatticeOp.cpp b/src/gpu/ops/GrLatticeOp.cpp
index d705c64..fce1f97 100644
--- a/src/gpu/ops/GrLatticeOp.cpp
+++ b/src/gpu/ops/GrLatticeOp.cpp
@@ -96,6 +96,10 @@
             numRects += fPatches[i].fIter->numRectsToDraw();
         }
 
+        if (!numRects) {
+            return;
+        }
+
         sk_sp<const GrBuffer> indexBuffer(target->resourceProvider()->refQuadIndexBuffer());
         PatternHelper helper(GrPrimitiveType::kTriangles);
         void* vertices = helper.init(target, vertexStride, indexBuffer.get(), kVertsPerRect,