Add offsets to GrVkBuffer.

src/gpu/vk/GrVkCommandBuffer.h

 /*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #ifndef GrVkCommandBuffer_DEFINED
 #define GrVkCommandBuffer_DEFINED
 
@@ skipping 24 matching lines @@
     void pipelineBarrier(const GrVkGpu* gpu,
                          VkPipelineStageFlags srcStageMask,
                          VkPipelineStageFlags dstStageMask,
                          bool byRegion,
                          BarrierType barrierType,
                          void* barrier) const;
 
     void bindVertexBuffer(GrVkGpu* gpu, GrVkVertexBuffer* vbuffer) {
         VkBuffer vkBuffer = vbuffer->buffer();
         if (!fBoundVertexBufferIsValid || vkBuffer != fBoundVertexBuffer) {
-            VkDeviceSize offset = 0;
+            VkDeviceSize offset = vbuffer->offset();
             GR_VK_CALL(gpu->vkInterface(), CmdBindVertexBuffers(fCmdBuffer,
                                                                 0,
                                                                 1,
                                                                 &vkBuffer,
                                                                 &offset));
             fBoundVertexBufferIsValid = true;
             fBoundVertexBuffer = vkBuffer;
             addResource(vbuffer->resource());
         }
     }
 
     void bindIndexBuffer(GrVkGpu* gpu, GrVkIndexBuffer* ibuffer) {
         VkBuffer vkBuffer = ibuffer->buffer();
         if (!fBoundIndexBufferIsValid || vkBuffer != fBoundIndexBuffer) {
             GR_VK_CALL(gpu->vkInterface(), CmdBindIndexBuffer(fCmdBuffer,
                                                               vkBuffer,
-                                                              0,
+                                                              ibuffer->offset(),
                                                               VK_INDEX_TYPE_UINT16));
             fBoundIndexBufferIsValid = true;
             fBoundIndexBuffer = vkBuffer;
             addResource(ibuffer->resource());
         }
     }
 
     void bindPipeline(const GrVkGpu* gpu, const GrVkPipeline* pipeline);
 
     void bindDescriptorSets(const GrVkGpu* gpu,
@@ skipping 232 matching lines @@
     }
 
     void onFreeGPUData(const GrVkGpu* gpu) const override {}
 
     friend class GrVkPrimaryCommandBuffer;
 
     typedef GrVkCommandBuffer INHERITED;
 };
 
 #endif