Free cached AA clip mask when create hard/stencil clip mask

http://codereview.appspot.com/6214050/



git-svn-id: http://skia.googlecode.com/svn/trunk@3983 2bbb7eff-a529-9590-31e7-b0007b416f81

src/gpu/GrClipMaskManager.cpp

@@ -121,6 +121,15 @@ bool GrClipMaskManager::createClipMask(GrGpu* gpu,
     }
 #endif // GR_AA_CLIP
 
+    // Either a hard (stencil buffer) clip was explicitly requested or 
+    // an antialiased clip couldn't be created. In either case, free up
+    // the texture in the antialiased mask cache.
+    // TODO: this may require more investigation. Ganesh performs a lot of
+    // utility draws (e.g., clears, InOderDrawBuffer playbacks) that hit
+    // the stencil buffer path. These may be incorrectly messing up the 
+    // AA cache.
+    fAACache.reset();
+
     GrRect bounds;
     GrRect rtRect;
     rtRect.setLTRB(0, 0,

src/gpu/GrContext.cpp

@@ -67,6 +67,11 @@ GrContext* GrContext::Create(GrEngine engine,
 
 GrContext::~GrContext() {
     this->flush();
+
+    // Since the gpu can hold scratch textures, give it a chance to let go
+    // of them before freeing the texture cache
+    fGpu->purgeResources();
+
     delete fTextureCache;
     delete fFontCache;
     delete fDrawBuffer;