Support nvidia on-demand app launching.

Requires linuxmint/xapps@dcb600595d to function correctly.

usr/lib/linuxmint/mintMenu/plugins/applications.py

@@ -12,7 +12,7 @@ import urllib.request, urllib.parse, urllib.error
 import gi
 gi.require_version("Gtk", "3.0")
 gi.require_version("MateMenu", "2.0")
-from gi.repository import Gtk, Gdk, GdkPixbuf, Gio, GLib, MateMenu
+from gi.repository import Gtk, Gdk, GdkPixbuf, Gio, GLib, MateMenu, XApp
 
 import plugins.recentHelper as RecentHelper
 from plugins.easybuttons import (ApplicationLauncher, CategoryButton,
@@ -188,6 +188,13 @@ class pluginclass(object):
         self.menuFiles = []
         self.de = de
 
+        self.canOffload = False
+
+        try:
+            self.canOffload = XApp.util_gpu_offload_supported()
+        except AttributeError:
+            print("Could not check for gpu offload support - maybe xapps isn't up to date.");
+
         # Detect the locale (this is used for the Wikipedia search)
         self.lang = "en"
         lang = os.getenv('LANG')
@@ -835,6 +842,7 @@ class pluginclass(object):
             startupMenuItem = Gtk.CheckMenuItem(_("Launch when I log in"))
             separator3 = Gtk.SeparatorMenuItem()
             launchMenuItem = Gtk.MenuItem(_("Launch"))
+            launchOffloadedMenuItem = Gtk.MenuItem(_("Run with NVIDIA GPU"))
             removeFromFavMenuItem = Gtk.MenuItem(_("Remove from favorites"))
             separator4 = Gtk.SeparatorMenuItem()
             propsMenuItem = Gtk.MenuItem(_("Edit properties"))
@@ -850,6 +858,7 @@ class pluginclass(object):
                 startupMenuItem.set_active(False)
                 startupMenuItem.connect("toggled", self.onAddToStartup, widget)
             launchMenuItem.connect("activate", self.onLaunchApp, widget)
+            launchOffloadedMenuItem.connect("activate", self.onLaunchOffloadedApp, widget)
             removeFromFavMenuItem.connect("activate", self.onFavoritesRemove, widget)
             propsMenuItem.connect("activate", self.onPropsApp, widget)
 
@@ -863,6 +872,8 @@ class pluginclass(object):
             mTree.append(startupMenuItem)
             mTree.append(separator3)
             mTree.append(launchMenuItem)
+            if self.canOffload:
+                mTree.append(launchOffloadedMenuItem)
             mTree.append(removeFromFavMenuItem)
             mTree.append(separator4)
             mTree.append(propsMenuItem)
@@ -904,6 +915,7 @@ class pluginclass(object):
         startupMenuItem = Gtk.CheckMenuItem(_("Launch when I log in"))
         separator2 = Gtk.SeparatorMenuItem()
         launchMenuItem = Gtk.MenuItem(_("Launch"))
+        launchOffloadedMenuItem = Gtk.MenuItem(_("Run with NVIDIA GPU"))
         uninstallMenuItem = Gtk.MenuItem(_("Uninstall"))
         deleteMenuItem = Gtk.MenuItem(_("Delete from menu"))
         separator3 = Gtk.SeparatorMenuItem()
@@ -918,6 +930,8 @@ class pluginclass(object):
         mTree.append(startupMenuItem)
         mTree.append(separator2)
         mTree.append(launchMenuItem)
+        if self.canOffload:
+            mTree.append(launchOffloadedMenuItem)
         mTree.append(uninstallMenuItem)
         if home in widget.desktopFile:
             mTree.append(deleteMenuItem)
@@ -929,6 +943,7 @@ class pluginclass(object):
         desktopMenuItem.connect("activate", self.add_to_desktop, widget)
         panelMenuItem.connect("activate", self.add_to_panel, widget)
         launchMenuItem.connect("activate", self.onLaunchApp, widget)
+        launchOffloadedMenuItem.connect("activate", self.onLaunchOffloadedApp, widget)
         propsMenuItem.connect("activate", self.onPropsApp, widget)
         uninstallMenuItem.connect("activate", self.onUninstallApp, widget)
 
@@ -1070,6 +1085,10 @@ class pluginclass(object):
         widget.execute()
         self.mintMenuWin.hide()
 
+    def onLaunchOffloadedApp(self, menu, widget):
+        widget.execute(offload=True)
+        self.mintMenuWin.hide()
+
     def onPropsApp(self, menu, widget):
         newFileFlag = False
         sysPaths = get_system_item_paths()

usr/lib/linuxmint/mintMenu/plugins/easybuttons.py

@@ -344,7 +344,7 @@ class ApplicationLauncher(easyButton):
             else:
                 selection.set_uris(["file://" + self.desktopFile])
 
-    def execute(self, *args):
+    def execute(self, *args, **kwargs):
         if self.appExec:
             if self.useTerminal:
                 cmd = "x-terminal-emulator -e \"" + self.appExec + "\""
@@ -352,7 +352,14 @@ class ApplicationLauncher(easyButton):
                     cmd = "mate-terminal -e \"" + self.appExec + "\""
                 Execute(cmd, self.appPath)
             else:
-                Execute(None, desktopFile=self.desktopFile)
+                offload = False
+
+                try:
+                    offload = kwargs["offload"]
+                except KeyError:
+                    pass
+
+                Execute(None, desktopFile=self.desktopFile, offload=offload)
 
     def uninstall(self, *args):
         Execute("mint-remove-application " + self.desktopFile)
@@ -464,12 +471,12 @@ class MenuApplicationLauncher(ApplicationLauncher):
         else:
             self.addLabel(appName)
 
-    def execute(self, *args):
+    def execute(self, *args, **kwargs):
         self.highlight = False
         for child in self.labelBox:
             child.destroy()
         self.setupLabels()
-        return super(MenuApplicationLauncher, self).execute(*args)
+        return super(MenuApplicationLauncher, self).execute(*args, **kwargs)
 
     def setShowComment(self, showComment):
         self.showComment = showComment

usr/lib/linuxmint/mintMenu/plugins/execute.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 
 import os
-from gi.repository import Gio, GLib
+from gi.repository import Gio, GLib, Gdk
 
 
 def RemoveArgs(Execline):
@@ -25,12 +25,26 @@ def gather_pid_callback(appinfo, pid, data):
     GLib.child_watch_add(pid, dummy_child_watch, None)
 
 # Actually execute the command
-def Execute(cmd , commandCwd=None, desktopFile=None):
+def Execute(cmd , commandCwd=None, desktopFile=None, offload=False):
     if desktopFile:
         launcher = Gio.DesktopAppInfo.new_from_filename(desktopFile)
-        retval = launcher.launch_uris_as_manager(uris=[], launch_context=None, spawn_flags=GLib.SpawnFlags.SEARCH_PATH|GLib.SpawnFlags.DO_NOT_REAP_CHILD, \
+        context = Gdk.Display.get_default().get_app_launch_context()
-            user_setup=None, user_setup_data=None, pid_callback=gather_pid_callback, pid_callback_data=None)
+        if offload:
-        return retval
+            print("Offloading '%s' to discrete gpu." % launcher.get_name());
+
+            context.setenv("__NV_PRIME_RENDER_OFFLOAD", "1")
+            context.setenv("__GLX_VENDOR_LIBRARY_NAME", "nvidia");
+
+        try:
+            retval = launcher.launch_uris_as_manager(uris=[],
+                                                     launch_context=context,
+                                                     spawn_flags=GLib.SpawnFlags.SEARCH_PATH|GLib.SpawnFlags.DO_NOT_REAP_CHILD,
+                                                     user_setup=None, user_setup_data=None,
+                                                     pid_callback=gather_pid_callback, pid_callback_data=None)
+            return retval
+        except GLib.Error as e:
+            print("Error launching %s: %s" % (launcher.get_name(), e.message))
+            return False
 
     cwd = os.path.expanduser("~")