Fix for rounded-rect clips with filters.
Don't use the base canvas size to limit raster of complex clips, since
the top canvas size may actually be larger (e.g., a blur filter which
expands the clip bounds to accommodate filter margins). Use the top
canvas bounds instead.
BUG=skia:4879,471212
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1657333002
Review URL: https://codereview.chromium.org/1657333002
diff --git a/gm/complexclip_blur_tiled.cpp b/gm/complexclip_blur_tiled.cpp
new file mode 100644
index 0000000..aac0416
--- /dev/null
+++ b/gm/complexclip_blur_tiled.cpp
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkBlurImageFilter.h"
+#include "SkRRect.h"
+#include "SkSurface.h"
+
+#define WIDTH 512
+#define HEIGHT 512
+
+namespace skiagm {
+
+class ComplexClipBlurTiledGM : public GM {
+public:
+ ComplexClipBlurTiledGM() {
+ }
+
+protected:
+ SkString onShortName() override {
+ return SkString("complexclip_blur_tiled");
+ }
+
+ SkISize onISize() override {
+ return SkISize::Make(WIDTH, HEIGHT);
+ }
+
+ void onDraw(SkCanvas* canvas) override {
+ SkPaint blurPaint;
+ SkAutoTUnref<SkImageFilter> blur(SkBlurImageFilter::Create(5.0f, 5.0f));
+ blurPaint.setImageFilter(blur);
+ const SkScalar tile_size = SkIntToScalar(128);
+ SkRect bounds;
+ if (!canvas->getClipBounds(&bounds)) {
+ bounds.setEmpty();
+ }
+ int ts = SkScalarCeilToInt(tile_size);
+ SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
+ SkAutoTUnref<SkSurface> tileSurface(canvas->newSurface(info));
+ if (!tileSurface.get()) {
+ tileSurface.reset(SkSurface::NewRaster(info));
+ }
+ SkCanvas* tileCanvas = tileSurface->getCanvas();
+ for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tile_size) {
+ for (SkScalar x = bounds.left(); x < bounds.right(); x += tile_size) {
+ tileCanvas->save();
+ tileCanvas->clear(0);
+ tileCanvas->translate(-x, -y);
+ SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
+ tileCanvas->saveLayer(&rect, &blurPaint);
+ SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
+ tileCanvas->clipRRect(rrect, SkRegion::kDifference_Op, true);
+ SkPaint paint;
+ tileCanvas->drawRect(rect, paint);
+ tileCanvas->restore();
+ tileCanvas->restore();
+ SkAutoTUnref<SkImage> tileImage(tileSurface->newImageSnapshot());
+ canvas->drawImage(tileImage, x, y);
+ }
+ }
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static GM* MyFactory1(void*) { return new ComplexClipBlurTiledGM(); }
+static GMRegistry reg1(MyFactory1);
+
+}