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();

[jvanverth1, 2016/06/06 20:47:43]

All of it must be reset? That's unfortunate.

[egdaniel, 2016/06/07 15:22:37]

Yes. But in general this shouldn't hurt us because we'll hopefully already
merged draws together there were using the same pipeline, buffers, etc. So in
practice we were going to bind new things anyways.

 }
 
 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;
 }