Turn clipping back on in OSAA pass 1. Skip default cons on GrDrawState when saving off a GrDrawTarget's state.

Review URL: http://codereview.appspot.com/5553051/



git-svn-id: http://skia.googlecode.com/svn/trunk@3067 2bbb7eff-a529-9590-31e7-b0007b416f81

src/gpu/GrContext.cpp

@@ -769,13 +769,12 @@ void GrContext::setupOffscreenAAPass1(GrDrawTarget* target,
     GrRenderTarget* offRT = record->fOffscreen.texture()->asRenderTarget();
     GrAssert(NULL != offRT);
 
-    
     GrDrawState* drawState = target->drawState();
     GrMatrix vm = drawState->getViewMatrix();
     drawState->reset();
     *drawState->viewMatrix() = vm;
     drawState->setRenderTarget(offRT);
-    
+
 #if PREFER_MSAA_OFFSCREEN_AA
     drawState->enableState(GrDrawState::kHWAntialias_StateBit);
 #endif
@@ -796,6 +795,8 @@ void GrContext::setupOffscreenAAPass1(GrDrawTarget* target,
     GrIRect clear = SkIRect::MakeWH(record->fScale * w, 
                                     record->fScale * h);
     target->setClip(GrClip(clear));
+    drawState->enableState(GrDrawState::kClip_StateBit);
+
 #if 0
     // visualize tile boundaries by setting edges of offscreen to white
     // and interior to tranparent. black.

src/gpu/GrDrawState.h

@@ -49,7 +49,11 @@ struct GrDrawState {
     GrDrawState() {
         this->reset();
     }
-    
+
+    GrDrawState(const GrDrawState& state) {
+        *this = state;
+    }
+
     /**
      * Resets to the default state. Sampler states will not be modified.
      */ 

src/gpu/GrDrawTarget.cpp

@@ -512,11 +512,11 @@ const GrClip& GrDrawTarget::getClip() const {
 }
 
 void GrDrawTarget::saveCurrentDrawState(SavedDrawState* state) const {
-    state->fState = fCurrDrawState;
+    state->fState.set(fCurrDrawState);
 }
 
 void GrDrawTarget::restoreDrawState(const SavedDrawState& state) {
-    fCurrDrawState = state.fState;
+    fCurrDrawState = *state.fState.get();
 }
 
 void GrDrawTarget::copyDrawState(const GrDrawTarget& srcTarget) {

src/gpu/GrDrawTarget.h

@@ -21,6 +21,7 @@
 #include "GrTexture.h"
 
 #include "SkXfermode.h"
+#include "SkTLazy.h"
 
 class GrTexture;
 class GrClipIterator;
@@ -139,7 +140,7 @@ public:
      */
     struct SavedDrawState {
     private:
-        GrDrawState fState;
+        SkTLazy<GrDrawState> fState;
         friend class GrDrawTarget;
     };
 
@@ -926,10 +927,12 @@ protected:
 
     // Helpers for GrDrawTarget subclasses that won't have private access to
     // SavedDrawState but need to peek at the state values.
-    static GrDrawState& accessSavedDrawState(SavedDrawState& sds)
-                                                        { return sds.fState; }
-    static const GrDrawState& accessSavedDrawState(const SavedDrawState& sds)
-                                                        { return sds.fState; }
+    static GrDrawState& accessSavedDrawState(SavedDrawState& sds) {
+        return *sds.fState.get();
+    }
+    static const GrDrawState& accessSavedDrawState(const SavedDrawState& sds){
+        return *sds.fState.get();
+    }
 
     // implemented by subclass to allocate space for reserved geom
     virtual bool onReserveVertexSpace(GrVertexLayout vertexLayout,