Add GrVkCopyPipeline to handle vulkan copies as draws

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2274663005

Review-Url: https://codereview.chromium.org/2274663005

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gpu/vk/GrVkCaps.h b/src/gpu/vk/GrVkCaps.h
index 6f46952f43..8e8953e522 100644
--- a/src/gpu/vk/GrVkCaps.h
+++ b/src/gpu/vk/GrVkCaps.h
@@ -70,6 +70,10 @@ public:
         return fAllowInitializationErrorOnTearDown;
     }
 
+    bool supportsCopiesAsDraws() const {
+        return fSupportsCopiesAsDraws;
+    }
+
     /**
      * Returns both a supported and most prefered stencil format to use in draws.
      */
@@ -128,6 +132,9 @@ private:
     // flag says we will accept VK_ERROR_INITIALIZATION_FAILED as well.
     bool fAllowInitializationErrorOnTearDown;
 
+    // Check whether we support using draws for copies.
+    bool fSupportsCopiesAsDraws;
+
     typedef GrCaps INHERITED;
 };