Recommit r2584 with gpu pass of the new ReadPixels test disabled in fixed pt (gpu code doesn't work in general in fixed pt).



git-svn-id: http://skia.googlecode.com/svn/trunk@2586 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/include/gpu/GrContext.h b/include/gpu/GrContext.h
index f980702..d61b8bb 100644
--- a/include/gpu/GrContext.h
+++ b/include/gpu/GrContext.h
@@ -432,6 +432,8 @@
      * @param height        height of rectangle to read in pixels.
      * @param config        the pixel config of the destination buffer
      * @param buffer        memory to read the rectangle into.
+     * @param rowBytes      number of bytes bewtween consecueive rows. Zero
+     *                      means rows are tightly packed.
      *
      * @return true if the read succeeded, false if not. The read can fail
      *              because of a unsupported pixel config or because no render
@@ -439,7 +441,8 @@
      */
     bool readRenderTargetPixels(GrRenderTarget* target,
                                 int left, int top, int width, int height,
-                                GrPixelConfig config, void* buffer);
+                                GrPixelConfig config, void* buffer, 
+                                size_t rowBytes = 0);
 
     /**
      * Reads a rectangle of pixels from a texture.