Add GpuCommandBuffer support.

src/gpu/vk/GrVkCommandBuffer.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 "GrVkCommandBuffer.h"
 
 #include "GrVkFramebuffer.h"
@@ skipping 293 matching lines @@
 }
 
 void GrVkPrimaryCommandBuffer::executeCommands(const GrVkGpu* gpu,
                                                const GrVkSecondaryCommandBuffer* buffer) {
     SkASSERT(fIsActive);
     SkASSERT(fActiveRenderPass);
     SkASSERT(fActiveRenderPass->isCompatible(*buffer->fActiveRenderPass));
 
     GR_VK_CALL(gpu->vkInterface(), CmdExecuteCommands(fCmdBuffer, 1, &buffer->fCmdBuffer));
     this->addResource(buffer);
+    // When executing a secondary command buffer all state (besides render pass state) becomes
+    // invalidated and must be reset. This includes bound buffers, pipelines, dynamic state, etc.
+    this->invalidateState();
 }
 
 void GrVkPrimaryCommandBuffer::submitToQueue(const GrVkGpu* gpu,
                                              VkQueue queue,
                                              GrVkGpu::SyncQueue sync) {
     SkASSERT(!fIsActive);
 
     VkResult err;
     VkFenceCreateInfo fenceInfo;
     memset(&fenceInfo, 0, sizeof(VkFenceCreateInfo));
@@ skipping 219 matching lines @@
     fIsActive = true;
 }
 
 void GrVkSecondaryCommandBuffer::end(const GrVkGpu* gpu) {
     SkASSERT(fIsActive);
     GR_VK_CALL_ERRCHECK(gpu->vkInterface(), EndCommandBuffer(fCmdBuffer));
     this->invalidateState();
     fIsActive = false;
 }