File imlib-no_shared_pixmaps.patch of Package imlib

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File imlib-no_shared_pixmaps.patch of Package imlib

* The boolean value returned via the last parameter to XShmQueryVersion()
  isn't honoured everywhere.
* The init functions that take parameters allow the caller to enable shared
  pixmaps when they aren't supported (or disabled by configuration files).

These result in incorrect rendering when the MIT-SHM extension doesn't support
shared pixmaps, e.g. using EXA with current versions of Xorg.

================================================================================
--- Imlib/misc.c
+++ Imlib/misc.c
@@ -137,8 +137,7 @@
 	      id->x.last_xim = NULL;
 	      id->x.last_sxim = NULL;
 	      id->max_shm = 0x7fffffff;
-	      if ((XShmPixmapFormat(id->x.disp) == ZPixmap) &&
-		  (pm == True))
+	      if ((XShmPixmapFormat(id->x.disp) == ZPixmap) && (pm == True))
 		id->x.shmp = 1;
 	    }
 	}
@@ -675,6 +674,10 @@
   id->x.root = DefaultRootWindow(disp);		/* the root window id */
   id->x.visual = DefaultVisual(disp, id->x.screen);	/* the visual type */
   id->x.depth = DefaultDepth(disp, id->x.screen);	/* the depth of the screen in bpp */
+
+  id->x.shm = 0;
+  id->x.shmp = 0;
+  id->max_shm = 0;
 #ifdef HAVE_SHM
   if (XShmQueryExtension(id->x.disp))
     {
@@ -690,17 +693,14 @@
 	      id->x.last_xim = NULL;
 	      id->x.last_sxim = NULL;
 	      id->max_shm = 0x7fffffff;
-	      if (XShmPixmapFormat(id->x.disp) == ZPixmap)
+	      if ((XShmPixmapFormat(id->x.disp) == ZPixmap &&
+		   (pm == True)))
 		id->x.shmp = 1;
 	    }
 	}
     }
-  else
 #endif
-    {
-      id->x.shm = 0;
-      id->x.shmp = 0;
-    }
+
   id->cache.on_image = 0;
   id->cache.size_image = 0;
   id->cache.num_image = 0;
@@ -949,8 +949,8 @@
 	}
       if (p->flags & PARAMS_SHAREDPIXMAPS)
 	{
-	  if (id->x.shm)
-	    id->x.shmp = p->sharedpixmaps;
+	  if (!p->sharedpixmaps)
+	    id->x.shmp = 0;
 	}
       if (p->flags & PARAMS_PALETTEOVERRIDE)
 	override = p->paletteoverride;
--- gdk_imlib/misc.c
+++ gdk_imlib/misc.c
@@ -674,6 +674,10 @@
   visual = gdk_rgb_get_visual();
   id->x.visual = GDK_VISUAL_XVISUAL(visual);	/* the visual type */
   id->x.depth = visual->depth;	/* the depth of the screen in bpp */
+
+  id->x.shm = 0;
+  id->x.shmp = 0;
+  id->max_shm = 0;
 #ifdef HAVE_SHM
   if (XShmQueryExtension(id->x.disp))
     {
@@ -689,17 +693,13 @@
 	      id->x.last_xim = NULL;
 	      id->x.last_sxim = NULL;
 	      id->max_shm = 0x7fffffff;
-	      if (XShmPixmapFormat(id->x.disp) == ZPixmap)
+	      if ((XShmPixmapFormat(id->x.disp) == ZPixmap) && (pm == True))
 		id->x.shmp = 1;
 	    }
 	}
     }
-  else
 #endif
-    {
-      id->x.shm = 0;
-      id->x.shmp = 0;
-    }
+
   id->cache.on_image = 0;
   id->cache.size_image = 0;
   id->cache.num_image = 0;
@@ -935,8 +935,8 @@
 	}
       if (p->flags & PARAMS_SHAREDPIXMAPS)
 	{
-	  if (id->x.shm)
-	    id->x.shmp = p->sharedpixmaps;
+	  if (!p->sharedpixmaps)
+	    id->x.shmp = 0;
 	}
       if (p->flags & PARAMS_PALETTEOVERRIDE)
 	override = p->paletteoverride;

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File imlib-no_shared_pixmaps.patch of Package imlib

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