Implement Vulkan Resolve.

src/gpu/vk/GrVkCommandBuffer.cpp

Index: src/gpu/vk/GrVkCommandBuffer.cpp
diff --git a/src/gpu/vk/GrVkCommandBuffer.cpp b/src/gpu/vk/GrVkCommandBuffer.cpp
index 2e474bad12c6d0c034b4737493a6f5e67eef8aac..a081828f7df12cc2ab92315e9133996c71a2cdcd 100644
--- a/src/gpu/vk/GrVkCommandBuffer.cpp
+++ b/src/gpu/vk/GrVkCommandBuffer.cpp
@@ -568,6 +568,26 @@ void GrVkPrimaryCommandBuffer::clearDepthStencilImage(const GrVkGpu* gpu,
                                                              subRanges));
 }
 
+void GrVkPrimaryCommandBuffer::resolveImage(GrVkGpu* gpu
+                                            const GrVkImage& srcImage,
+                                            const GrVkImage& dstImage,
+                                            uint32_t regionCount,
+                                            const VkImageResolve* regions) {
+    SkASSERT(fIsActive);
+    SkASSERT(!fActiveRenderPass);
+
+    this->addResource(srcImage.resource());
+    this->addResource(dstImage.resource());
+
+    GR_VK_CALL(gpu->vkInterface(), CmdResolveImage(fCmdBuffer,

[jvanverth1, 2016/08/04 19:00:48]

Do we need to transition the image layouts to anything special before doing
this? Or will that be done outside of this method?

[egdaniel, 2016/08/04 19:16:17]

ahh yes good catch. layouts changed in GrVkGpu::onResolveRT

+                                                   srcImage.image(),
+                                                   srcImage.currentLayout(),
+                                                   dstImage.image(),
+                                                   dstImage.currentLayout(),
+                                                   regionCount,
+                                                   regions));
+}
+
 void GrVkPrimaryCommandBuffer::onFreeGPUData(const GrVkGpu* gpu) const {
     SkASSERT(!fActiveRenderPass);
     // Destroy the fence, if any