Implement initCopySurfaceDstDesc for Vulkan

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1880613002

Review URL: https://codereview.chromium.org/1880613002

2 files changed, 15 insertions, 3 deletions

diff --git a/src/gpu/vk/GrVkGpu.cpp b/src/gpu/vk/GrVkGpu.cpp
index 280346fda1..28dce344be 100644
--- a/src/gpu/vk/GrVkGpu.cpp
+++ b/src/gpu/vk/GrVkGpu.cpp
@@ -1304,6 +1304,20 @@ bool GrVkGpu::onCopySurface(GrSurface* dst,
     return false;
 }
 
+bool GrVkGpu::initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) const {
+    // Currently we don't support msaa
+    if (src->asRenderTarget() && src->asRenderTarget()->numColorSamples() > 1) {
+        return false;
+    }
+
+    // This will support copying the dst as CopyImage since all of our surfaces require transferSrc
+    // and transferDst usage flags in Vulkan.
+    desc->fOrigin = src->origin();
+    desc->fConfig = src->config();
+    desc->fFlags = kNone_GrSurfaceFlags;
+    return true;
+}
+
 void GrVkGpu::onGetMultisampleSpecs(GrRenderTarget* rt, const GrStencilSettings&,
                                     int* effectiveSampleCnt, SkAutoTDeleteArray<SkPoint>*) {
     // TODO: stub.
diff --git a/src/gpu/vk/GrVkGpu.h b/src/gpu/vk/GrVkGpu.h
index 91f9d4d379..5872f18671 100644
--- a/src/gpu/vk/GrVkGpu.h
+++ b/src/gpu/vk/GrVkGpu.h
@@ -75,9 +75,7 @@ public:
                                int* effectiveSampleCnt,
                                SkAutoTDeleteArray<SkPoint>*);
 
-    bool initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) const override {
-        return false;
-    }
+    bool initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) const override;
 
     void xferBarrier(GrRenderTarget*, GrXferBarrierType) override {}