Refugee from Dead Machine 4: MDB Monster

src/gpu/GrRenderTarget.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrRenderTarget.h"
 
 #include "GrContext.h"
 #include "GrDrawContext.h"
 #include "GrDrawTarget.h"
 #include "GrGpu.h"
 #include "GrRenderTargetPriv.h"
 #include "GrStencilAttachment.h"
 
 GrRenderTarget::~GrRenderTarget() {
     if (fLastDrawTarget) {
         fLastDrawTarget->clearRT();
     }
     SkSafeUnref(fLastDrawTarget);
 }
 
 void GrRenderTarget::discard() {
+
+    // since we're discarding we know we don't need the prior DC
+    // TODO: we should be able to automatically know when a discard is possible:
+    //    once all pending reads are satisfied and there are no refs
+    this->setFromRawPixels(false);
     // go through context so that all necessary flushing occurs
     GrContext* context = this->getContext();
     if (!context) {
         return;
     }
 
     SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(this));
     if (!drawContext) {
         return;
     }
 
     drawContext->discard();
+
+    this->setFromRawPixels(false);
 }
 
 void GrRenderTarget::flagAsNeedingResolve(const SkIRect* rect) {
     if (kCanResolve_ResolveType == getResolveType()) {
         if (rect) {
             fResolveRect.join(*rect);
             if (!fResolveRect.intersect(0, 0, this->width(), this->height())) {
                 fResolveRect.setEmpty();
             }
         } else {
@@ skipping 49 matching lines @@
         // we're not acctually adding one.
         return true;
     }
     fRenderTarget->fStencilAttachment = stencil;
     if (!fRenderTarget->completeStencilAttachment()) {
         SkSafeSetNull(fRenderTarget->fStencilAttachment);
         return false;
     } 
     return true;
 }