feat: the gaming session on NVIDIA runs on the display's own mode, Steam's UI at its size; pin 3.16.31-2

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KkpbsMw4rQyBsxDG6ebHK2

patches/gamescope-nvidia.PKGBUILD

@@ -2,14 +2,14 @@
 # Based on Arch Linux's gamescope PKGBUILD (Maxime Gauduin, Giancarlo Razzolini, Sven-Hendrik Haase and contributors).
 #
 # gamescope with GBM-allocated scan-out buffers for NVIDIA (opt-in: gamescope_drm_gbm_scanout=1).
-# The patch is gamescope-gbm-scanout.patch (next to this file; see its header for where it comes from). pkgver is the gamescope
-# release the patch was made for and tested with. Kept in sync with https://github.com/theupriser/steamify-gamescope-nvidia;
-# Steamify (lib/gamescope-nvidia.sh) writes both files into a temporary folder and runs makepkg there.
+# The patches are gamescope-gbm-scanout.patch and gamescope-ui-native.patch (next to this file, applied in this order); see the
+# README for where they come from.
+# UPSTREAM_VERSION (next to this file) names the gamescope tag the patch is made for.
 
 pkgname=steamify-gamescope-nvidia
 _srcname=gamescope
 pkgver=3.16.31
-pkgrel=1
+pkgrel=2
 pkgdesc='SteamOS session compositing window manager, with GBM scan-out for NVIDIA (opt-in: gamescope_drm_gbm_scanout=1)'
 arch=(x86_64)
 url=https://github.com/theupriser/steamify-gamescope-nvidia
@@ -73,6 +73,7 @@ makedepends=(
 source=(
   gamescope::git+https://github.com/ValveSoftware/gamescope.git#commit=${pkgver}
   gamescope-gbm-scanout.patch
+  gamescope-ui-native.patch
   git+https://gitlab.freedesktop.org/emersion/libdisplay-info.git
   git+https://gitlab.freedesktop.org/emersion/libliftoff.git
   git+https://github.com/ValveSoftware/openvr.git
@@ -89,6 +90,7 @@ b2sums=('SKIP'
         'SKIP'
         'SKIP'
         'SKIP'
+        'SKIP'
         'SKIP')
 
 prepare() {
@@ -98,6 +100,8 @@ prepare() {
   # silently produce an unpatched gamescope under this package's name.
   git apply --check ../gamescope-gbm-scanout.patch || { echo "gbm patch does not apply to gamescope ${pkgver}" >&2; return 1; }
   git apply ../gamescope-gbm-scanout.patch
+  git apply --check ../gamescope-ui-native.patch || { echo "ui-native patch does not apply to gamescope ${pkgver}" >&2; return 1; }
+  git apply ../gamescope-ui-native.patch
 
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