More framework support for TransferBuffers

src/gpu/GrResourceProvider.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 "GrResourceProvider.h"
 
 #include "GrGpu.h"
@@ skipping 128 matching lines @@
             scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
         }
         GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, size, scratchFlags);
         if (resource) {
             return static_cast<GrVertexBuffer*>(resource);
         }
     }
     return this->gpu()->createVertexBuffer(size, dynamic);
 }
 
+GrTransferBuffer* GrResourceProvider::createTransferBuffer(size_t size, TransferType type,
+                                                           uint32_t flags) {
+    if (this->isAbandoned()) {
+        return nullptr;
+    }
+
+    //bool noPendingIO = SkToBool(flags & kNoPendingIO_Flag);
+    GrGpu::TransferType gpuType = kCpuToGpu_TransferType == type ? GrGpu::kCpuToGpu_TransferType
+                                                                 : GrGpu::kGpuToCpu_TransferType;
+    return this->gpu()->createTransferBuffer(size, gpuType);
+}
+
 GrBatchAtlas* GrResourceProvider::createAtlas(GrPixelConfig config,
                                               int width, int height,
                                               int numPlotsX, int numPlotsY,
                                               GrBatchAtlas::EvictionFunc func, void* data) {
     GrSurfaceDesc desc;
     desc.fFlags = kNone_GrSurfaceFlags;
     desc.fWidth = width;
     desc.fHeight = height;
     desc.fConfig = config;
 
     // We don't want to flush the context so we claim we're in the middle of flushing so as to
     // guarantee we do not recieve a texture with pending IO
     // TODO: Determine how to avoid having to do this. (https://bug.skia.org/4156)
     static const uint32_t kFlags = GrResourceProvider::kNoPendingIO_Flag;
     GrTexture* texture = this->createApproxTexture(desc, kFlags);
     if (!texture) {
         return nullptr;
     }
-    GrBatchAtlas* atlas = new GrBatchAtlas(texture, numPlotsX, numPlotsY);
+    GrBatchAtlas* atlas = new GrBatchAtlas(this, texture, numPlotsX, numPlotsY);
     atlas->registerEvictionCallback(func, data);
     return atlas;
 }
 
 GrStencilAttachment* GrResourceProvider::attachStencilAttachment(GrRenderTarget* rt) {
     SkASSERT(rt);
     if (rt->renderTargetPriv().getStencilAttachment()) {
         return rt->renderTargetPriv().getStencilAttachment();
     }
 
@@ skipping 32 matching lines @@
                 // FBO. But iOS doesn't allow a stencil-only FBO. It reports unsupported
                 // FBO status.
                 this->gpu()->clearStencil(rt);
             }
         }
     }
     return rt->renderTargetPriv().getStencilAttachment();
 }