Proposed SkCanvas API for preLoading textures to VRAM

include/core/SkCanvas.h

 /*
  * Copyright 2006 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 SkCanvas_DEFINED
 #define SkCanvas_DEFINED
 
@@ skipping 1143 matching lines @@
         class SkDrawIter* fImpl;    // this points at fStorage
         SkPaint           fDefaultPaint;
         bool              fDone;
     };
 
     // don't call
     const SkRegion& internal_private_getTotalClip() const;
     // don't call
     void internal_private_getTotalClipAsPath(SkPath*) const;
 
+    void internalPrivate_PreLoad(const SkBitmap& bitmap, const SkIRect& rect);
+
 protected:
     // default impl defers to getDevice()->newSurface(info)
     virtual SkSurface* onNewSurface(const SkImageInfo&);
 
     // default impl defers to its device
     virtual const void* onPeekPixels(SkImageInfo*, size_t* rowBytes);
 
     virtual void onDrawDRRect(const SkRRect&, const SkRRect&, const SkPaint&);
 
     enum ClipEdgeStyle {
@@ skipping 239 matching lines @@
     bool asROBitmap(SkBitmap*) const;
 
 private:
     SkBitmap    fBitmap;    // used if peekPixels() fails
     const void* fAddr;      // NULL on failure
     SkImageInfo fInfo;
     size_t      fRowBytes;
 };
 
 #endif