Reland of Add guards to GrTextureProvider

src/gpu/GrTextureProvider.cpp

 
 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextureProvider.h"
 #include "GrTexturePriv.h"
 #include "GrResourceCache.h"
 #include "GrGpu.h"
+#include "../private/GrSingleOwner.h"
+
+#define ASSERT_SINGLE_OWNER \
+    SkDEBUGCODE(GrSingleOwner::AutoEnforce debug_SingleOwner(fSingleOwner);)
 
 enum ScratchTextureFlags {
     kExact_ScratchTextureFlag           = 0x1,
     kNoPendingIO_ScratchTextureFlag     = 0x2,
     kNoCreate_ScratchTextureFlag        = 0x4,
 };
 
+GrTextureProvider::GrTextureProvider(GrGpu* gpu, GrResourceCache* cache, GrSingleOwner* singleOwner)
+    : fCache(cache)
+    , fGpu(gpu)
+#ifdef SK_DEBUG
+    , fSingleOwner(singleOwner)
+#endif
+    {
+}
+
 GrTexture* GrTextureProvider::createTexture(const GrSurfaceDesc& desc, bool budgeted,
                                             const void* srcData, size_t rowBytes) {
+    ASSERT_SINGLE_OWNER
     if (this->isAbandoned()) {
         return nullptr;
     }
     if ((desc.fFlags & kRenderTarget_GrSurfaceFlag) &&
         !fGpu->caps()->isConfigRenderable(desc.fConfig, desc.fSampleCnt > 0)) {
         return nullptr;
     }
     if (!GrPixelConfigIsCompressed(desc.fConfig)) {
         static const uint32_t kFlags = kExact_ScratchTextureFlag |
                                        kNoCreate_ScratchTextureFlag;
         if (GrTexture* texture = this->refScratchTexture(desc, kFlags)) {
             if (!srcData || texture->writePixels(0, 0, desc.fWidth, desc.fHeight, desc.fConfig,
                                                  srcData, rowBytes)) {
                 if (!budgeted) {
                     texture->resourcePriv().makeUnbudgeted();
                 }
                 return texture;
             }
             texture->unref();
         }
     }
     return fGpu->createTexture(desc, budgeted, srcData, rowBytes);
 }
 
 GrTexture* GrTextureProvider::createApproxTexture(const GrSurfaceDesc& desc) {
+    ASSERT_SINGLE_OWNER
     return this->internalCreateApproxTexture(desc, 0);
 }
 
 GrTexture* GrTextureProvider::internalCreateApproxTexture(const GrSurfaceDesc& desc,
                                                           uint32_t scratchFlags) {
+    ASSERT_SINGLE_OWNER
     if (this->isAbandoned()) {
         return nullptr;
     }
     // Currently we don't recycle compressed textures as scratch.
     if (GrPixelConfigIsCompressed(desc.fConfig)) {
         return nullptr;
     } else {
         return this->refScratchTexture(desc, scratchFlags);
     }
 }
 
 GrTexture* GrTextureProvider::refScratchTexture(const GrSurfaceDesc& inDesc,
                                                 uint32_t flags) {
+    ASSERT_SINGLE_OWNER
     SkASSERT(!this->isAbandoned());
     SkASSERT(!GrPixelConfigIsCompressed(inDesc.fConfig));
 
     SkTCopyOnFirstWrite<GrSurfaceDesc> desc(inDesc);
 
     if (fGpu->caps()->reuseScratchTextures() || (desc->fFlags & kRenderTarget_GrSurfaceFlag)) {
         if (!(kExact_ScratchTextureFlag & flags)) {
             // bin by pow2 with a reasonable min
             const int kMinSize = 16;
             GrSurfaceDesc* wdesc = desc.writable();
@@ skipping 26 matching lines @@
 
     if (!(kNoCreate_ScratchTextureFlag & flags)) {
         return fGpu->createTexture(*desc, true, nullptr, 0);
     }
 
     return nullptr;
 }
 
 GrTexture* GrTextureProvider::wrapBackendTexture(const GrBackendTextureDesc& desc,
                                                  GrWrapOwnership ownership) {
+    ASSERT_SINGLE_OWNER
     if (this->isAbandoned()) {
         return nullptr;
     }
     return fGpu->wrapBackendTexture(desc, ownership);
 }
 
 GrRenderTarget* GrTextureProvider::wrapBackendRenderTarget(const GrBackendRenderTargetDesc& desc) {
+    ASSERT_SINGLE_OWNER
     return this->isAbandoned() ? nullptr : fGpu->wrapBackendRenderTarget(desc,
-                                                                      kBorrow_GrWrapOwnership);
+                                                                         kBorrow_GrWrapOwnership);
 }
 
 void GrTextureProvider::assignUniqueKeyToResource(const GrUniqueKey& key, GrGpuResource* resource) {
+    ASSERT_SINGLE_OWNER
     if (this->isAbandoned() || !resource) {
         return;
     }
     resource->resourcePriv().setUniqueKey(key);
 }
 
 bool GrTextureProvider::existsResourceWithUniqueKey(const GrUniqueKey& key) const {
+    ASSERT_SINGLE_OWNER
     return this->isAbandoned() ? false : fCache->hasUniqueKey(key);
 }
 
 GrGpuResource* GrTextureProvider::findAndRefResourceByUniqueKey(const GrUniqueKey& key) {
+    ASSERT_SINGLE_OWNER
     return this->isAbandoned() ? nullptr : fCache->findAndRefUniqueResource(key);
 }
+
+GrTexture* GrTextureProvider::findAndRefTextureByUniqueKey(const GrUniqueKey& key) {
+    ASSERT_SINGLE_OWNER
+    GrGpuResource* resource = this->findAndRefResourceByUniqueKey(key);
+    if (resource) {
+        GrTexture* texture = static_cast<GrSurface*>(resource)->asTexture();
+        SkASSERT(texture);
+        return texture;
+    }
+    return NULL;
+}