Proposed SkCanvas API for preLoading textures to VRAM v2.0

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"
@@ skipping 2386 matching lines @@
 void SkCanvas::drawTextOnPathHV(const void* text, size_t byteLength,
                                 const SkPath& path, SkScalar hOffset,
                                 SkScalar vOffset, const SkPaint& paint) {
     SkMatrix    matrix;
 
     matrix.setTranslate(hOffset, vOffset);
     this->drawTextOnPath(text, byteLength, path, &matrix, paint);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+void SkCanvas::EXPERIMENTAL_optimize(SkPicture* picture) {
+    SkBaseDevice* device = this->getDevice();
+    if (NULL != device) {
+        device->EXPERIMENTAL_optimize(picture);
+    }
+}
 
 void SkCanvas::drawPicture(SkPicture& picture) {
+    SkBaseDevice* device = this->getTopDevice();
+    if (NULL != device) {
+        // Canvas has to first give the device the opportunity to render
+        // the picture itself.
+        if (device->EXPERIMENTAL_drawPicture(picture)) {
+            return; // the device has rendered the entire picture
+        }
+    }
+
     picture.draw(this);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
 SkCanvas::LayerIter::LayerIter(SkCanvas* canvas, bool skipEmptyClips) {
     SK_COMPILE_ASSERT(sizeof(fStorage) >= sizeof(SkDrawIter), fStorage_too_small);
 
     SkASSERT(canvas);
@@ skipping 66 matching lines @@
     if (!bitmap.allocPixels(info)) {
         return NULL;
     }
 
     // should this functionality be moved into allocPixels()?
     if (!bitmap.info().isOpaque()) {
         bitmap.eraseColor(0);
     }
     return SkNEW_ARGS(SkCanvas, (bitmap));
 }