make the filter mode for GrTextureAccess an enum so we can plumb down

include/gpu/GrTexture.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTexture_DEFINED
 #define GrTexture_DEFINED
@@ skipping 109 matching lines @@
     }
 #else
     void validate() const {}
 #endif
     static GrResourceKey ComputeKey(const GrGpu* gpu,
                                     const GrTextureParams* params,
                                     const GrTextureDesc& desc,
                                     const GrCacheID& cacheID);
     static GrResourceKey ComputeScratchKey(const GrTextureDesc& desc);
     static bool NeedsResizing(const GrResourceKey& key);
-    static bool NeedsFiltering(const GrResourceKey& key);
+    static bool NeedsBilerp(const GrResourceKey& key);
 
 protected:
     // A texture refs its rt representation but not vice-versa. It is up to
     // the subclass constructor to initialize this pointer.
     SkAutoTUnref<GrRenderTarget> fRenderTarget;
 
     GrTexture(GrGpu* gpu, bool isWrapped, const GrTextureDesc& desc)
     : INHERITED(gpu, isWrapped, desc)
     , fRenderTarget(NULL) {
 
@@ skipping 52 matching lines @@
     GrTexture* setTexture(GrTexture* texture) {
         fTexture.reset(SkSafeRef(texture));
         return texture;
     }
 private:
     SkAutoTUnref<GrTexture> fTexture;
     SkIPoint                fOffset;
 };
 
 #endif