tesselating path renderer unit tests

src/gpu/GrTestUtils.cpp

Index: src/gpu/GrTestUtils.cpp
diff --git a/src/gpu/GrTestUtils.cpp b/src/gpu/GrTestUtils.cpp
index 163fb56389ef1f6c308adc794d97bf8c6e41a7a3..00742e955ce29ab94ec5db5b90271cfa4127dc20 100644
--- a/src/gpu/GrTestUtils.cpp
+++ b/src/gpu/GrTestUtils.cpp
@@ -83,6 +83,15 @@ const SkMatrix& TestMatrixRectStaysRect(SkRandom* random) {
     return gMatrices[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gMatrices)))];
 }
 
+SkMatrix TestMatrixInvertible(SkRandom* random) {

[robertphillips, 2015/05/07 16:59:29]

Isn't this pretty much guaranteed to kill RVO?

+    SkMatrix result;
+    SkMatrix dummy;
+    do {
+        result = TestMatrix(random);
+    } while (!result.invert(&dummy));
+    return result;
+}
+
 const SkRect& TestRect(SkRandom* random) {
     static SkRect gRects[7];
     static bool gOnce;