separate state for msaa renderability

include/gpu/GrContext.h

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrContext_DEFINED
 #define GrContext_DEFINED
 
@@ skipping 268 matching lines @@
      * @return the currently bound render target.
      */
     const GrRenderTarget* getRenderTarget() const { return fRenderTarget.get(); }
     GrRenderTarget* getRenderTarget() { return fRenderTarget.get(); }
 
     GrAARectRenderer* getAARectRenderer() { return fAARectRenderer; }
 
     /**
      * Can the provided configuration act as a color render target?
      */
-    bool isConfigRenderable(GrPixelConfig config) const;
+    bool isConfigRenderable(GrPixelConfig config, bool withMSAA) const;
 
     /**
      * Return the max width or height of a render target supported by the
      * current GPU.
      */
     int getMaxRenderTargetSize() const;
 
     /**
      * Returns the max sample count for a render target. It will be 0 if MSAA
      * is not supported.
@@ skipping 725 matching lines @@
     }
 
     GrTexture* texture() { return fTexture; }
 
 private:
     GrContext*                    fContext;
     GrTexture*                    fTexture;
 };
 
 #endif