Bug 594876 - Turn OpenGL compositing on by default on X11. r=joe

gfx/tests/mochitest/test_acceleration.html

@@ -71,6 +71,10 @@ switch(osName)
     }
     break;
 
+  case "Linux":
+    isnot(acceleratedWindows, 0, "Acceleration enabled on Linux");
+    break;
+
   default:
     is(acceleratedWindows, 0, "Acceleration not supported on '" + osName + "'");
 }

widget/src/xpwidgets/nsBaseWidget.cpp

@@ -778,7 +778,7 @@ nsBaseWidget::AutoUseBasicLayerManager::~AutoUseBasicLayerManager()
 PRBool
 nsBaseWidget::GetShouldAccelerate()
 {
-#if defined(XP_WIN) || defined(ANDROID) || (MOZ_PLATFORM_MAEMO > 5)
+#if defined(XP_WIN) || defined(ANDROID) || (MOZ_PLATFORM_MAEMO > 5) || (!defined(MOZ_PLATFORM_MAEMO) && defined(MOZ_X11))
   PRBool accelerateByDefault = PR_TRUE;
 #elif defined(XP_MACOSX)
 /* quickdraw plugins don't work with OpenGL so we need to avoid OpenGL when we want to support