Vulkan: Fix performance issue

c9e0edc changed the layerCount in SubresourceUpdate to
VK_REMAINING_ARRAY_LAYERS in some cases. So that the deferred
clear logic cannot work correctly.

Bug: angleproject:4617
Change-Id: Idedada085c618ff900538094412c752522594684
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2191551
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Charlie Lao <cclao@google.com>

Author: sunsun02

src/libANGLE/renderer/vulkan/vk_helpers.cpp

@@ -3720,7 +3720,9 @@ angle::Result ImageHelper::flushSingleSubresourceStagedUpdates(ContextVk *contex
             if (update.isUpdateToLayerLevel(layer, level))
             {
                 // On any data update, exit out. We'll need to do a full upload.
-                if (update.updateSource != UpdateSource::Clear || update.clear.layerCount != 1)
+                if (update.updateSource != UpdateSource::Clear ||
+                    (update.clear.layerCount != 1 &&
+                     !(update.clear.layerCount == VK_REMAINING_ARRAY_LAYERS && mLayerCount == 1)))
                 {
                     foundClear.reset();
                     break;