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-rw-r--r--src/gpu/GrTessellator.cpp3
-rw-r--r--tests/TessellatingPathRendererTests.cpp12
2 files changed, 14 insertions, 1 deletions
diff --git a/src/gpu/GrTessellator.cpp b/src/gpu/GrTessellator.cpp
index d6a64cdd46..6cd54380e6 100644
--- a/src/gpu/GrTessellator.cpp
+++ b/src/gpu/GrTessellator.cpp
@@ -1279,13 +1279,14 @@ void sanitize_contours(VertexList* contours, int contourCnt, bool approximate) {
round(&v->fPoint);
}
Vertex* next = v->fNext;
+ Vertex* nextWrap = next ? next : contour->fHead;
if (coincident(prev->fPoint, v->fPoint)) {
LOG("vertex %g,%g coincident; removing\n", v->fPoint.fX, v->fPoint.fY);
contour->remove(v);
} else if (!v->fPoint.isFinite()) {
LOG("vertex %g,%g non-finite; removing\n", v->fPoint.fX, v->fPoint.fY);
contour->remove(v);
- } else if (next && Line(prev->fPoint, next->fPoint).dist(v->fPoint) == 0.0) {
+ } else if (Line(prev->fPoint, nextWrap->fPoint).dist(v->fPoint) == 0.0) {
LOG("vertex %g,%g collinear; removing\n", v->fPoint.fX, v->fPoint.fY);
contour->remove(v);
} else {
diff --git a/tests/TessellatingPathRendererTests.cpp b/tests/TessellatingPathRendererTests.cpp
index 0b30feecc0..a9913769df 100644
--- a/tests/TessellatingPathRendererTests.cpp
+++ b/tests/TessellatingPathRendererTests.cpp
@@ -560,6 +560,17 @@ static SkPath create_path_38() {
return path;
}
+// Reduction from crbug.com/851409.
+static SkPath create_path_39() {
+ SkPath path;
+ path.moveTo(2072553216, 0);
+ path.lineTo(2072553216, 1);
+ path.lineTo(2072553472, -13.5);
+ path.lineTo(2072553216, 0);
+ path.lineTo(2072553472, -6.5);
+ return path;
+}
+
static std::unique_ptr<GrFragmentProcessor> create_linear_gradient_processor(GrContext* ctx) {
SkPoint pts[2] = { {0, 0}, {1, 1} };
@@ -658,4 +669,5 @@ DEF_GPUTEST_FOR_ALL_CONTEXTS(TessellatingPathRendererTests, reporter, ctxInfo) {
test_path(ctx, rtc.get(), create_path_36());
test_path(ctx, rtc.get(), create_path_37());
test_path(ctx, rtc.get(), create_path_38(), SkMatrix(), GrAAType::kCoverage);
+ test_path(ctx, rtc.get(), create_path_39());
}