Start using RenderTargetProxy (omnibus)

include/private/GrTextureProxy.h

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTextureProxy_DEFINED
 #define GrTextureProxy_DEFINED
 
@@ skipping 12 matching lines @@
                                       SkBackingFit, SkBudgeted,
                                       const void* srcData = nullptr, size_t rowBytes = 0);
     static sk_sp<GrTextureProxy> Make(sk_sp<GrTexture>);
 
     GrTextureProxy* asTextureProxy() override { return this; }
     const GrTextureProxy* asTextureProxy() const override { return this; }
 
     // Actually instantiate the backing texture, if necessary
     GrTexture* instantiate(GrTextureProvider*);
 
+    // dispreferred entry point
+    GrContext* getContext() { return nullptr; } // fTexture->getContext(); }
+
+    bool readPixels(int left, int top, int width, int height,
+                    GrPixelConfig config,
+                    void* buffer,
+                    size_t rowBytes = 0,
+                    uint32_t pixelOpsFlags = 0);
+
+    bool writePixels(int left, int top, int width, int height,
+                     GrPixelConfig config,
+                     const void* buffer,
+                     size_t rowBytes = 0,
+                     uint32_t pixelOpsFlags = 0);
+
 protected:
     // Deferred version
     GrTextureProxy(const GrSurfaceDesc& srcDesc, SkBackingFit, SkBudgeted,
                    const void* srcData, size_t srcRowBytes);
     // Wrapped version
     GrTextureProxy(sk_sp<GrTexture> tex);
 
 private:
     size_t onGpuMemorySize() const override;
 
     // For wrapped proxies the GrTexture pointer is stored in GrIORefProxy.
     // For deferred proxies that pointer will be filled n when we need to instantiate
     // the deferred resource
 
     typedef GrSurfaceProxy INHERITED;
 };
 
 #endif