More general version of image filtering; reworked to be robust and easier to SSE

include/core/SkBitmap.h

Index: include/core/SkBitmap.h
diff --git a/include/core/SkBitmap.h b/include/core/SkBitmap.h
index 887169ccb522c2820c8c2f0ff3f78e454d0d00cf..495079cbc69b74bcf7b44c28ea3640bc7dd0b4f4 100644
--- a/include/core/SkBitmap.h
+++ b/include/core/SkBitmap.h
@@ -538,7 +538,7 @@ public:
         by calling copyTo().
      */
     bool canCopyTo(Config newConfig) const;
-
+    
     /**
      *  DEPRECATED -- will be replaced with API on SkPaint
      */
@@ -702,6 +702,16 @@ private:
     int extractMipLevel(SkBitmap* dst, SkFixed sx, SkFixed sy);
     bool hasMipMap() const;
     void freeMipMap();
+    
+    /** Make a scaled copy of this bitmap into the provided destination.
+      * The caller is responsible for having set the width and height of the
+      * provided destination bitmap, and also having allocated its pixel memory.
+      * 
+      * This function is temporary and for testing purposes only; it will likely
+      * move once it has been properly plumbed into the bitmap shader infrastructure.

[reed1, 2013/07/09 17:26:29]

this is an 80-col file

[humper, 2013/07/09 17:46:13]

Done.

+      */
+      
+    void scale(SkBitmap *dst) const;

[humper, 2013/07/09 17:21:18]

Made private; disabled the GM and bench.

 
     friend struct SkBitmapProcState;
 };