commit 302cffba86a188373c99833d83392f33e6014542
author senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Aug 01 20:16:34 2012 +0000
committer senorblanco@chromium.org <senorblanco@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> Wed Aug 01 20:16:34 2012 +0000
tree 04b0fb01a92ec3c0fbf5ddfc17c7e8f5298ead62
parent a2d71482db8b6d752a51c96da74768d7dfc27932

Replace the asAFoo() functions in SkImageFilter with canFilterImageGPU() and
onFilterImageGPU() virtuals.  This allows each filter to implement its own GPU
processing code, even for multi-pass filters.

Review URL:  http://codereview.appspot.com/6449075/



git-svn-id: http://skia.googlecode.com/svn/trunk@4900 2bbb7eff-a529-9590-31e7-b0007b416f81

src/effects/SkBlurImageFilter.cpp

diff --git a/src/effects/SkBlurImageFilter.cpp b/src/effects/SkBlurImageFilter.cpp
index e3ac346..ed76743 100644
--- a/src/effects/SkBlurImageFilter.cpp
+++ b/src/effects/SkBlurImageFilter.cpp
@@ -8,6 +8,7 @@
 #include "SkBitmap.h"
 #include "SkBlurImageFilter.h"
 #include "SkColorPriv.h"
+#include "GrContext.h"
 
 SkBlurImageFilter::SkBlurImageFilter(SkFlattenableReadBuffer& buffer)
   : INHERITED(buffer) {
@@ -20,11 +21,6 @@
     SkASSERT(sigmaX >= 0 && sigmaY >= 0);
 }
 
-bool SkBlurImageFilter::asABlur(SkSize* sigma) const {
-    *sigma = fSigma;
-    return true;
-}
-
 void SkBlurImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
     buffer.writeScalar(fSigma.fWidth);
@@ -187,4 +183,9 @@
     return true;
 }
 
+GrTexture* SkBlurImageFilter::onFilterImageGPU(GrTexture* src, const SkRect& rect) {
+    return src->getContext()->gaussianBlur(src, false, rect,
+                                           fSigma.width(), fSigma.height());
+}
+
 SK_DEFINE_FLATTENABLE_REGISTRAR(SkBlurImageFilter)