From 123f4df31b85e00841e31eb38fa859562130de55 Mon Sep 17 00:00:00 2001
From: Matthew Allum <mallum@openedhand.com>
Date: Wed, 5 Nov 2008 11:48:07 +0000
Subject: [PATCH] Add support for setting MUTTER_DISABLE_MIPMAPS env var.

---
 src/compositor/mutter/README              | 10 ++++++++++
 src/compositor/mutter/compositor-mutter.c | 12 ++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)
 create mode 100644 src/compositor/mutter/README

diff --git a/src/compositor/mutter/README b/src/compositor/mutter/README
new file mode 100644
index 000000000..b6308f69f
--- /dev/null
+++ b/src/compositor/mutter/README
@@ -0,0 +1,10 @@
+Intro
+=====
+
+Fix me.
+
+
+Env Vars
+========
+
+MUTTER_DISABLE_MIPMAPS - set to disable use of mipmaped windows.
\ No newline at end of file
diff --git a/src/compositor/mutter/compositor-mutter.c b/src/compositor/mutter/compositor-mutter.c
index 752d82437..4967819ba 100644
--- a/src/compositor/mutter/compositor-mutter.c
+++ b/src/compositor/mutter/compositor-mutter.c
@@ -135,6 +135,7 @@ typedef struct _Mutter
 
   gboolean        show_redraw : 1;
   gboolean        debug       : 1;
+  gboolean        no_mipmaps  : 1;
 } Mutter;
 
 typedef struct _MetaCompScreen
@@ -1353,6 +1354,7 @@ repair_win (MutterWindow *cw)
   MetaDisplay           *display  = meta_screen_get_display (screen);
   Display               *xdisplay = meta_display_get_xdisplay (display);
   MetaCompScreen        *info     = meta_screen_get_compositor_data (screen);
+  Mutter                *compositor;
   Window                 xwindow  = priv->xwindow;
   gboolean               full     = FALSE;
 
@@ -1360,6 +1362,8 @@ repair_win (MutterWindow *cw)
       xwindow == clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage)))
     return;
 
+  compositor = (Mutter*)meta_display_get_compositor (display);
+
   meta_error_trap_push (display);
 
   if (priv->back_pixmap == None)
@@ -1393,8 +1397,9 @@ repair_win (MutterWindow *cw)
        * seemingly caused by cogl_texture_set_filters() in set_filter
        * Not sure if that call is actually needed.
        */
-      clutter_texture_set_filter_quality (CLUTTER_TEXTURE (priv->actor),
-                                          CLUTTER_TEXTURE_QUALITY_HIGH );
+      if (!compositor->no_mipmaps)
+        clutter_texture_set_filter_quality (CLUTTER_TEXTURE (priv->actor),
+                                            CLUTTER_TEXTURE_QUALITY_HIGH );
 
       clutter_x11_texture_pixmap_set_pixmap
                        (CLUTTER_X11_TEXTURE_PIXMAP (priv->actor),
@@ -2474,6 +2479,9 @@ mutter_new (MetaDisplay *display)
 
   clc->display = display;
 
+  if (g_getenv("MUTTER_DISABLE_MIPMAPS"))
+    clc->no_mipmaps = TRUE;
+
   meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
   XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
                 False, atoms);