commit 4bcd62e3313da60c3aa96ccd12b7ea440c7266d4
author egdaniel <egdaniel@google.com> Wed Aug 31 07:37:31 2016 -0700
committer Commit bot <commit-bot@chromium.org> Wed Aug 31 07:37:31 2016 -0700
tree 695930fc9669667b6dfb4073c107560d3d9b41d1
parent 272b311298d78569c88130ceee3096b876fcbf25

Add some copy support for vulkan msaa

This allows us to do copies from:
    msaa->msaa with same sample count
    msaa->no-msaa with a resolve

Still missing support for no-msaa to msaa which will require a copyAsDraw
which is currently stalled and fixing possible driver bugs.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2294533002

Review-Url: https://codereview.chromium.org/2294533002

src/gpu/vk/GrVkTextureRenderTarget.cpp

diff --git a/src/gpu/vk/GrVkTextureRenderTarget.cpp b/src/gpu/vk/GrVkTextureRenderTarget.cpp
index 532d0a2..37b68af 100644
--- a/src/gpu/vk/GrVkTextureRenderTarget.cpp
+++ b/src/gpu/vk/GrVkTextureRenderTarget.cpp
@@ -49,7 +49,9 @@
         msImageDesc.fLevels = 1;
         msImageDesc.fSamples = desc.fSampleCnt;
         msImageDesc.fImageTiling = VK_IMAGE_TILING_OPTIMAL;
-        msImageDesc.fUsageFlags = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+        msImageDesc.fUsageFlags = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT |
+                                  VK_IMAGE_USAGE_TRANSFER_DST_BIT |
+                                  VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
         msImageDesc.fMemProps = VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
 
         if (!GrVkImage::InitImageInfo(gpu, msImageDesc, &msInfo)) {