SkCanvas::onDrawPicture() quick-reject

src/core/SkCanvas.cpp

 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkCanvasPriv.h"
 #include "SkBitmapDevice.h"
@@ skipping 2726 matching lines @@
             SkAutoCanvasMatrixPaint acmp(this, matrix, paint, picture->cullRect());
             picture->playback(this);
         } else {
             this->onDrawPicture(picture, matrix, paint);
         }
     }
 }
 
 void SkCanvas::onDrawPicture(const SkPicture* picture, const SkMatrix* matrix,
                              const SkPaint* paint) {
+    if (!paint || paint->canComputeFastBounds()) {
+        SkRect bounds = picture->cullRect();
+        if (paint) {
+            paint->computeFastBounds(bounds, &bounds);
+        }
+        if (matrix) {
+            matrix->mapRect(&bounds);
+        }
+        if (this->quickReject(bounds)) {
+            return;
+        }
+    }
+
     SkBaseDevice* device = this->getTopDevice();
     if (device) {
         // Canvas has to first give the device the opportunity to render
         // the picture itself.
         if (device->EXPERIMENTAL_drawPicture(this, picture, matrix, paint)) {
             return; // the device has rendered the entire picture
         }
     }
 
     SkAutoCanvasMatrixPaint acmp(this, matrix, paint, picture->cullRect());
@@ skipping 97 matching lines @@
     }
 
     if (matrix) {
         canvas->concat(*matrix);
     }
 }
 
 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
     fCanvas->restoreToCount(fSaveCount);
 }