Pass clip to context

include/core/SkImageFilter.h

Index: include/core/SkImageFilter.h
diff --git a/include/core/SkImageFilter.h b/include/core/SkImageFilter.h
index a65a24c3ee45b5cbc098869ac6c5d4269ebb5633..5f05a8511b0f5c0f6b6104c727a6813bfb6ef83c 100644
--- a/include/core/SkImageFilter.h
+++ b/include/core/SkImageFilter.h
@@ -18,6 +18,7 @@ class SkColorFilter;
 class SkBaseDevice;
 class SkSurfaceProps;
 struct SkIPoint;
+class GrClip;
 class GrFragmentProcessor;
 class GrTexture;
 
@@ -132,7 +133,7 @@ public:
      *  relative to the src when it is drawn. The default implementation does
      *  single-pass processing using asFragmentProcessor().
      */
-    virtual bool filterImageGPU(Proxy*, const SkBitmap& src, const Context&,
+    virtual bool filterImageGPU(Proxy*, const SkBitmap& src, const Context&, const GrClip&,

[Stephen White, 2015/02/24 16:47:38]

I'm not fond of this, because it moves the filterImageGPU() signature further
away from the onFilterImage() signature (to which it had been moving).

AFAIK, filters are always called with a wide-open clip, since
SkGpuDevice::filterTexture() uses a GrContext::AutoWideOpenIdentityDraw() before
calling filterImageGPU()). Could we simply make that assumption for now?

                                 SkBitmap* result, SkIPoint* offset) const;
 
     /**