skia: Add support for CHROMIUM_image backed textures.

src/gpu/GrResourceCache.cpp

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrResourceCache.h"
@@ skipping 357 matching lines @@
 
     if (!SkToBool(ResourceAccess::kAllCntsReachedZero_RefNotificationFlag & flags)) {
         SkASSERT(!resource->isPurgeable());
         return;
     }
 
     SkASSERT(resource->isPurgeable());
     this->removeFromNonpurgeableArray(resource);
     fPurgeableQueue.insert(resource);
 
-    if (!resource->resourcePriv().isBudgeted()) {
-        // Check whether this resource could still be used as a scratch resource.
-        if (!resource->cacheAccess().isExternal() &&
-            resource->resourcePriv().getScratchKey().isValid()) {
-            // We won't purge an existing resource to make room for this one.
-            if (fBudgetedCount < fMaxCount &&
-                fBudgetedBytes + resource->gpuMemorySize() <= fMaxBytes) {
-                resource->resourcePriv().makeBudgeted();
+    if (resource->reuseable()) {
+        if (!resource->resourcePriv().isBudgeted()) {
+            // Check whether this resource could still be used as a scratch resource.
+            if (!resource->cacheAccess().isExternal() &&
+                resource->resourcePriv().getScratchKey().isValid()) {
+                // We won't purge an existing resource to make room for this one.
+                if (fBudgetedCount < fMaxCount &&
+                    fBudgetedBytes + resource->gpuMemorySize() <= fMaxBytes) {
+                    resource->resourcePriv().makeBudgeted();
+                    return;
+                }
+            }
+        } else {
+            // Purge the resource immediately if we're over budget
+            // Also purge if the resource has neither a valid scratch key nor a unique key.
+            bool noKey = !resource->resourcePriv().getScratchKey().isValid() &&
+                         !resource->getUniqueKey().isValid();
+            if (!this->overBudget() && !noKey) {
                 return;
             }
         }
-    } else {
-        // Purge the resource immediately if we're over budget
-        // Also purge if the resource has neither a valid scratch key nor a unique key.
-        bool noKey = !resource->resourcePriv().getScratchKey().isValid() &&
-                     !resource->getUniqueKey().isValid();
-        if (!this->overBudget() && !noKey) {
-            return;
-        }
     }
 
     SkDEBUGCODE(int beforeCount = this->getResourceCount();)
     resource->cacheAccess().release();
     // We should at least free this resource, perhaps dependent resources as well.
     SkASSERT(this->getResourceCount() < beforeCount);
     this->validate();
 }
 
 void GrResourceCache::didChangeGpuMemorySize(const GrGpuResource* resource, size_t oldSize) {
@@ skipping 326 matching lines @@
         return true;
     }
     if (index < fNonpurgeableResources.count() && fNonpurgeableResources[index] == resource) {
         return true;
     }
     SkDEBUGFAIL("Resource index should be -1 or the resource should be in the cache.");
     return false;
 }
 
 #endif