Convert drawPaint to drawRRect in simple cases

src/gpu/GrClipStackClip.cpp

 /*
  * 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 "GrClipStackClip.h"
 
 #include "GrAppliedClip.h"
@@ skipping 23 matching lines @@
 }
 
 bool GrClipStackClip::quickContains(const SkRRect& rrect) const {
     if (!fStack || fStack->isWideOpen()) {
         return true;
     }
     return fStack->quickContains(rrect.makeOffset(SkIntToScalar(fOrigin.fX),
                                                   SkIntToScalar(fOrigin.fY)));
 }
 
+bool GrClipStackClip::isRRect(const SkRect& origRTBounds, SkRRect* rr, bool* aa) const {
+    if (!fStack) {
+        return false;
+    }
+    const SkRect* rtBounds = &origRTBounds;
+    SkRect tempRTBounds;
+    bool origin = fOrigin.fX || fOrigin.fY;
+    if (origin) {
+        tempRTBounds = origRTBounds;
+        tempRTBounds.offset(SkIntToScalar(fOrigin.fX), SkIntToScalar(fOrigin.fY));
+        rtBounds = &tempRTBounds;
+    }
+    if (fStack->isRRect(*rtBounds, rr, aa)) {
+        if (origin) {
+            rr->offset(-SkIntToScalar(fOrigin.fX), -SkIntToScalar(fOrigin.fY));
+        }
+        return true;
+    }
+    return false;
+}
+
 void GrClipStackClip::getConservativeBounds(int width, int height, SkIRect* devResult,
                                             bool* isIntersectionOfRects) const {
     if (!fStack) {
         devResult->setXYWH(0, 0, width, height);
         if (isIntersectionOfRects) {
             *isIntersectionOfRects = true;
         }
         return;
     }
     SkRect devBounds;
@@ skipping 729 matching lines @@
     sk_sp<GrTexture> result(texProvider->createApproxTexture(desc));
     if (!result) {
         return nullptr;
     }
     result->resourcePriv().setUniqueKey(key);
 
     helper.toTexture(result.get());
 
     return result;
 }