Add optional data parameter to createBuffer

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 "GrBuffer.h"
@@ skipping 73 matching lines @@
 GrPathRange* GrResourceProvider::createGlyphs(const SkTypeface* tf,
                                               const SkScalerContextEffects& effects,
                                               const SkDescriptor* desc,
                                               const GrStrokeInfo& stroke) {
 
     SkASSERT(this->gpu()->pathRendering());
     return this->gpu()->pathRendering()->createGlyphs(tf, effects, desc, stroke);
 }
 
 GrBuffer* GrResourceProvider::createBuffer(size_t size, GrBufferType intendedType,
-                                           GrAccessPattern accessPattern, uint32_t flags) {
+                                           GrAccessPattern accessPattern, uint32_t flags,
+                                           const void* data) {
     if (this->isAbandoned()) {
         return nullptr;
     }
 
     if (kDynamic_GrAccessPattern == accessPattern) {
         // bin by pow2 with a reasonable min
         static const uint32_t MIN_SIZE = 1 << 12;
         size = SkTMax(MIN_SIZE, GrNextPow2(SkToUInt(size)));
 
         GrScratchKey key;
         GrBuffer::ComputeScratchKeyForDynamicBuffer(size, intendedType, &key);
         uint32_t scratchFlags = 0;
         if (flags & kNoPendingIO_Flag) {
             scratchFlags = GrResourceCache::kRequireNoPendingIO_ScratchFlag;
         } else {
             scratchFlags = GrResourceCache::kPreferNoPendingIO_ScratchFlag;
         }
         GrGpuResource* resource = this->cache()->findAndRefScratchResource(key, size, scratchFlags);
-        if (resource) {
-            return static_cast<GrBuffer*>(resource);
+        if (GrBuffer* buffer = static_cast<GrBuffer*>(resource)) {
+            if (data) {
+                buffer->updateData(data, size);
+            }
+            return buffer;
         }
     }
-    return this->gpu()->createBuffer(size, intendedType, accessPattern);
+    return this->gpu()->createBuffer(size, intendedType, accessPattern, data);
 }
 
 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;
@@ skipping 59 matching lines @@
     return rt->renderTargetPriv().getStencilAttachment();
 }
 
 GrRenderTarget* GrResourceProvider::wrapBackendTextureAsRenderTarget(
         const GrBackendTextureDesc& desc) {
     if (this->isAbandoned()) {
         return nullptr;
     }
     return this->gpu()->wrapBackendTextureAsRenderTarget(desc);
 }