Add caching of the snapshot image form a surface
Notify the surface when the canvas draws into it, so it can invalidate the
cached image, and (if needed) perform a copy-on-write on the surface if it
was being shared with the image.
Review URL: https://codereview.appspot.com/6441115
git-svn-id: http://skia.googlecode.com/svn/trunk@5306 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/image/SkImage_Raster.cpp b/src/image/SkImage_Raster.cpp
index 216f094..daed241 100644
--- a/src/image/SkImage_Raster.cpp
+++ b/src/image/SkImage_Raster.cpp
@@ -59,6 +59,8 @@
// exposed for SkSurface_Raster via SkNewImageFromPixelRef
SkImage_Raster(const SkImage::Info&, SkPixelRef*, size_t rowBytes);
+ SkPixelRef* getPixelRef() const { return fBitmap.pixelRef(); }
+
private:
SkImage_Raster() : INHERITED(0, 0) {}
@@ -93,8 +95,6 @@
SkImage_Raster::SkImage_Raster(const Info& info, SkPixelRef* pr, size_t rowBytes)
: INHERITED(info.fWidth, info.fHeight) {
- SkASSERT(pr->isImmutable());
-
bool isOpaque;
SkBitmap::Config config = SkImageInfoToBitmapConfig(info, &isOpaque);
@@ -159,3 +159,7 @@
return SkNEW_ARGS(SkImage_Raster, (info, pr, rowBytes));
}
+SkPixelRef* SkBitmapImageGetPixelRef(SkImage* image) {
+ return ((SkImage_Raster*)image)->getPixelRef();
+}
+