Add optional data parameter to createBuffer

src/gpu/GrGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpu_DEFINED
 #define GrGpu_DEFINED
 
@@ skipping 120 matching lines @@
      * Implements GrTextureProvider::wrapBackendTextureAsRenderTarget
      */
     GrRenderTarget* wrapBackendTextureAsRenderTarget(const GrBackendTextureDesc&);
 
     /**
      * Creates a buffer.
      *
      * @param size            size of buffer to create.
      * @param intendedType    hint to the graphics subsystem about what the buffer will be used for.
      * @param accessPattern   hint to the graphics subsystem about how the data will be accessed.
+     * @param data            optional data with which to initialize the buffer.
      *
      * @return the buffer if successful, otherwise nullptr.
      */
-    GrBuffer* createBuffer(size_t size, GrBufferType intendedType, GrAccessPattern accessPattern);
+    GrBuffer* createBuffer(size_t size, GrBufferType intendedType, GrAccessPattern accessPattern,
+                           const void* data = nullptr);
 
     /**
      * Resolves MSAA.
      */
     void resolveRenderTarget(GrRenderTarget* target);
 
     /** Info struct returned by getReadPixelsInfo about performing intermediate draws before
         reading pixels for performance or correctness. */
     struct ReadPixelTempDrawInfo {
         /** If the GrGpu is requesting that the caller do a draw to an intermediate surface then
@@ skipping 375 matching lines @@
                                        GrGpuResource::LifeCycle lifeCycle,
                                        const SkTArray<GrMipLevel>& texels) = 0;
     virtual GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc,
                                                  GrGpuResource::LifeCycle lifeCycle,
                                                  const SkTArray<GrMipLevel>& texels) = 0;
 
     virtual GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&, GrWrapOwnership) = 0;
     virtual GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&,
                                                       GrWrapOwnership) = 0;
     virtual GrRenderTarget* onWrapBackendTextureAsRenderTarget(const GrBackendTextureDesc&) = 0;
-    virtual GrBuffer* onCreateBuffer(size_t size, GrBufferType intendedType, GrAccessPattern) = 0;
+    virtual GrBuffer* onCreateBuffer(size_t size, GrBufferType intendedType, GrAccessPattern,
+                                     const void* data) = 0;
 
     // overridden by backend-specific derived class to perform the clear.
     virtual void onClear(GrRenderTarget*, const SkIRect& rect, GrColor color) = 0;
 
     // Overridden by backend specific classes to perform a clear of the stencil clip bits.  This is
     // ONLY used by the the clip target
     virtual void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) = 0;
 
     // overridden by backend-specific derived class to perform the draw call.
     virtual void onDraw(const GrPipeline&,
@@ skipping 57 matching lines @@
     SkTArray<const MultisampleSpecs*, true>                             fMultisampleSpecsMap;
     GrTAllocator<MultisampleSpecs>                                      fMultisampleSpecsAllocator;
     // The context owns us, not vice-versa, so this ptr is not ref'ed by Gpu.
     GrContext*                                                          fContext;
 
     friend class GrPathRendering;
     typedef SkRefCnt INHERITED;
 };
 
 #endif