[Perf] (MG_Backend/DirectVulkan): skip cross-draw re-sync of unchanged textures via a content-version early-out; SyncTextureAndGetDescriptor 8.9%->2.4%

MobileGL/MG_State/GLState/TextureState/TextureObject2DCube.cpp

@@ -41,6 +41,9 @@ namespace MobileGL {
             }
 
             void TextureObject2DCube::MarkStorageDirty(TextureUploadTarget uploadTarget, Uint mipmapLevel, bool dirty) {
+                if (dirty) {
+                    ++m_contentVersion;
+                }
                 m_textureStorage.MarkDirty(GetIndexOfTextureUploadTarget(uploadTarget), mipmapLevel, dirty);
             }