In VulkanWindowContext add check to see if ganesh changed the layout of the image.

src/gpu/vk/GrVkRenderTarget.cpp

Index: src/gpu/vk/GrVkRenderTarget.cpp
diff --git a/src/gpu/vk/GrVkRenderTarget.cpp b/src/gpu/vk/GrVkRenderTarget.cpp
index 6d95ba0d00a294daa9bb30a811da0e2982986455..ba5b8b97cfed234d5ded30f504d0eeb6c9f00b7a 100644
--- a/src/gpu/vk/GrVkRenderTarget.cpp
+++ b/src/gpu/vk/GrVkRenderTarget.cpp
@@ -353,8 +353,10 @@ void GrVkRenderTarget::onAbandon() {
 
 
 GrBackendObject GrVkRenderTarget::getRenderTargetHandle() const {
-    // Currently just passing back the pointer to the main Image::Resource as the handle
-    return (GrBackendObject)&fResource;
+    // If the render target is multisampled, we current return the ImageInfo for the resolved image.

[jvanverth1, 2016/08/31 17:09:42]

Nit: currently

[egdaniel, 2016/08/31 17:14:10]

Done.

+    // If we only wrap the msaa target (currently not implemented) we should return a handle to that
+    // instead.
+    return (GrBackendObject)&fInfo;
 }
 
 const GrVkResource* GrVkRenderTarget::stencilImageResource() const {