Proposed SkCanvas API for preLoading textures to VRAM v2.0

include/core/SkDevice.h

 
 /*
  * Copyright 2010 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.
  */
 
 
 #ifndef SkDevice_DEFINED
@@ skipping 405 matching lines @@
     virtual void* onAccessPixels(SkImageInfo* info, size_t* rowBytes);
 
     /**
      *  Leaky properties are those which the device should be applying but it isn't.
      *  These properties will be applied by the draw, when and as it can.
      *  If the device does handle a property, that property should be set to the identity value
      *  for that property, effectively making it non-leaky.
      */
     SkDeviceProperties fLeakyProperties;
 
+    /**
+     *  PRIVATE / EXPERIMENTAL -- do not call
+     *  Construct an acceleration object and attach it to 'picture'
+     */
+    virtual void EXPERIMENTAL_optimize(SkPicture* picture);
+
+    /**
+     *  PRIVATE / EXPERIMENTAL -- do not call
+     *  This entry point gives the backend an opportunity to take over the rendering
+     *  of 'picture'. If optimization data is available (due to an earlier
+     *  'optimize' call) this entry point should make use of it and return true
+     *  if all rendering has been done. If false is returned, SkCanvas will
+     *  perform its own rendering pass. It is acceptable for the backend 
+     *  to perform some device-specific warm up tasks and then let SkCanvas
+     *  perform the main rendering loop (by return false from here).
+     */
+    virtual bool EXPERIMENTAL_drawPicture(const SkPicture& picture);
+
 private:
     friend class SkCanvas;
     friend struct DeviceCM; //for setMatrixClip
     friend class SkDraw;
     friend class SkDrawIter;
     friend class SkDeviceFilteredPaint;
     friend class SkDeviceImageFilterProxy;
     friend class SkDeferredDevice;    // for newSurface
 
     friend class SkSurface_Raster;
@@ skipping 33 matching lines @@
     SkMetaData* fMetaData;
 
 #ifdef SK_DEBUG
     bool        fAttachedToCanvas;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif