add SkImage::newSurface

src/image/SkSurface_Gpu.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkSurface_Base.h"
 #include "SkImagePriv.h"
+#include "SkImage_Base.h"
 #include "SkCanvas.h"
 #include "SkGpuDevice.h"
 
 #if SK_SUPPORT_GPU
 
 class SkSurface_Gpu : public SkSurface_Base {
 public:
     SK_DECLARE_INST_COUNT(SkSurface_Gpu)
 
     SkSurface_Gpu(GrRenderTarget*, const SkSurfaceProps*, bool doClear);
@@ skipping 39 matching lines @@
     return SkNEW_ARGS(SkCanvas, (fDevice, &this->props(), flags));
 }
 
 SkSurface* SkSurface_Gpu::onNewSurface(const SkImageInfo& info) {
     GrRenderTarget* rt = fDevice->accessRenderTarget();
     int sampleCount = rt->numSamples();
     return SkSurface::NewRenderTarget(fDevice->context(), info, sampleCount, &this->props());
 }
 
 SkImage* SkSurface_Gpu::onNewImageSnapshot() {
-    return SkImage::NewTexture(fDevice->accessBitmap(false));
+    const int sampleCount = fDevice->accessRenderTarget()->numSamples();
+    SkImage* image = SkNewImageFromBitmapTexture(fDevice->accessBitmap(false), sampleCount);
+    if (image) {
+        as_IB(image)->initWithProps(this->props());
+    }
+    return image;
 }
 
 void SkSurface_Gpu::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y,
                               const SkPaint* paint) {
     canvas->drawBitmap(fDevice->accessBitmap(false), x, y, paint);
 }
 
 // Create a new SkGpuDevice and, if necessary, copy the contents of the old
 // device into it. Note that this flushes the SkGpuDevice but
 // doesn't force an OpenGL flush.
@@ skipping 70 matching lines @@
     SkAutoTUnref<GrTexture> tex(ctx->refScratchTexture(desc, GrContext::kExact_ScratchTexMatch));
 
     if (NULL == tex) {
         return NULL;
     }
 
     return SkNEW_ARGS(SkSurface_Gpu, (tex->asRenderTarget(), props, true));
 }
 
 #endif