Added a fix for X11 / Cinnamon window popups and maximize button not visible.

ptlinux/native/gamescope-wayland-live-resize.patch

@@ -0,0 +1,50 @@
+From: PT Linux Launcher maintainers
+Subject: Avoid idle waits for direct Wayland resize configures
+
+The lazy-output-images backport leaves no shared output images allocated while
+Gamescope is presenting the game directly as Wayland planes. A host-window
+configure nevertheless calls vulkan_remake_output_images(), whose unconditional
+device-idle wait and output-sized blank-texture recreation stall the compositor
+thread for every intermediate drag size.
+
+Wait only when an output or screenshot image actually exists. The transparent
+fallback texture is unused by the non-session Wayland backend, so retain it
+across Wayland size changes; session backends preserve the existing recreation
+behavior. If a frame later requires full composition, the lazy allocation path
+creates correctly sized output images before rendering it.
+
+--- a/src/rendervulkan.cpp
++++ b/src/rendervulkan.cpp
+@@ -3374,7 +3374,21 @@ static bool vulkan_ensure_output_images()
+ bool vulkan_remake_output_images()
+ {
+ 	VulkanOutput_t *pOutput = &g_output;
+-	g_device.waitIdle();
++	bool bHasLiveImages =
++		!pOutput->outputImages.empty() && pOutput->outputImages[0];
++	if ( !bHasLiveImages )
++	{
++		for ( const auto &pScreenshotImage : pOutput->pScreenshotImages )
++		{
++			if ( pScreenshotImage )
++			{
++				bHasLiveImages = true;
++				break;
++			}
++		}
++	}
++	if ( bHasLiveImages )
++		g_device.waitIdle();
+ 
+ 	pOutput->nOutImage = 0;
+ 
+@@ -3386,7 +3400,8 @@ bool vulkan_remake_output_images()
+ 	{
+ 		pOutput->outputImages.clear();
+ 		pOutput->outputImagesPartialOverlay.clear();
+-		pOutput->temporaryHackyBlankImage = vulkan_create_debug_blank_texture();
++		if ( GetBackend()->IsSessionBased() || !pOutput->temporaryHackyBlankImage )
++			pOutput->temporaryHackyBlankImage = vulkan_create_debug_blank_texture();
+ 		return true;
+ 	}
+