Use scratch keys for stencil buffers.

src/gpu/GrGpuResource.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 "GrGpuResource.h"
@@ skipping 110 matching lines @@
     SkASSERT(fScratchKey.isNullScratch());
     SkASSERT(scratchKey.isScratch());
     SkASSERT(!scratchKey.isNullScratch());
     // Wrapped resources can never have a key.
     if (this->isWrapped()) {
         return;
     }
     fScratchKey = scratchKey;
 }
 
+void GrGpuResource::removeScratchKey() {
+    if (!this->wasDestroyed() && !fScratchKey.isNullScratch()) {
+        get_resource_cache2(fGpu)->resourceAccess().willRemoveScratchKey(this);
+        fScratchKey = GrResourceKey::NullScratchKey();
+    }
+}
+
 uint32_t GrGpuResource::CreateUniqueID() {
     static int32_t gUniqueID = SK_InvalidUniqueID;
     uint32_t id;
     do {
         id = static_cast<uint32_t>(sk_atomic_inc(&gUniqueID) + 1);
     } while (id == SK_InvalidUniqueID);
     return id;
 }
 
 void GrGpuResource::setBudgeted(bool countsAgainstBudget) {
     // Wrapped resources never count against the budget, nothing to do. No point in changing the
     // budgeting of destroyed resources.
     if (this->isWrapped() || this->wasDestroyed()) {
         return;
     }
 
     uint32_t oldFlags = fFlags;
     if (countsAgainstBudget) {
         fFlags |= kBudgeted_Flag;
     } else {
         fFlags &= ~kBudgeted_Flag;
     }
     if (fFlags != oldFlags) {
         get_resource_cache2(fGpu)->resourceAccess().didChangeBudgetStatus(this);
     }
 }