vulkan: re-render last frame

When no video is arriving, the resized window doesn't have defined
content.

Moreover, if using Wayland, the window change of fullscreen is not
applied at until next refresh (new frame in this case).

Author: MartinPulec

src/video_display/vulkan/vulkan_display.cpp

@@ -652,6 +652,15 @@ void VulkanDisplay::window_parameters_changed(WindowParameters new_parameters) {
                 auto render_area_size = context.get_render_area_size();
                 render_pipeline.update_render_area(render_area_size, current_image_description.size);
         }
+
+        // re-render some recent image for the case that no video is arriving:
+        // 1. to have defined content
+        // 2. with Wayland, to perform the changes (without content refresh, the
+        // window isn't resized)
+        auto *last_image = available_img_queue.try_pop();
+        if (last_image != nullptr) {
+                queue_image(TransferImage{ *last_image }, true);
+        }
 }
 
 std::string