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 160 matching lines @@
      * possibly from SkCanvas' dtor.
      */
     virtual void onDetachFromCanvas() {
         SkASSERT(fAttachedToCanvas);
         this->unlockPixels();
 #ifdef SK_DEBUG
         fAttachedToCanvas = false;
 #endif
     };
 
+    /**
+     *  Construct an acceleration object and attach it to 'picture'
+     */
+    virtual void optimize(SkPicture* picture);
+
+    /**
+     *  Possibly use the results of an earlier 'optimize' call to render 'picture'.
+     *  Return true if all rendering has been done; false if the caller
+     *  (i.e., SkCanvas) should render normally.
+     */
+    virtual bool optimizedRender(SkPicture& picture);
+
 protected:
     enum Usage {
        kGeneral_Usage,
        kSaveLayer_Usage  // <! internal use only
     };
 
     struct TextFlags {
         uint32_t            fFlags;     // SkPaint::getFlags()
         SkPaint::Hinting    fHinting;
     };
@@ skipping 262 matching lines @@
     SkMetaData* fMetaData;
 
 #ifdef SK_DEBUG
     bool        fAttachedToCanvas;
 #endif
 
     typedef SkRefCnt INHERITED;
 };
 
 #endif