Vulkan: Copy Between Textures

This PR adds support for copying between two textures.

Pull Request: https://projects.blender.org/blender/blender/pulls/108413

extern/vulkan_memory_allocator/vk_mem_alloc_impl.cc

@@ -9,4 +9,13 @@
 
 #define VMA_IMPLEMENTATION
 
+/* 
+ * Disabling internal asserts of VMA. 
+ * 
+ * Blender can destroy logical device before all the resources are freed. This is because static
+ * resources are freed as a last step during quiting. As long as Vulkan isn't feature complete
+ * we don't want to change this behavior. So for now we just disable the asserts.
+ */
+#define VMA_ASSERT(test)
+
 #include "vk_mem_alloc.h"