Attachment 44 Details for Bug 81 – Check depth support before reporting Render support

[patch] Check depth support before reporting Render support

sunrender.diff (text/plain), 1.58 KB, created by Keith Packard on 2003-05-08 08:32:28 UTC

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Creator: Keith Packard

Created: 2003-05-08 08:32:28 UTC

Size: 1.58 KB

patch

obsolete

>Index: Xrender.c
>===================================================================
>RCS file: /local/src/CVS/Xrender/Xrender.c,v
>retrieving revision 1.16
>diff -u -r1.16 Xrender.c
>--- Xrender.c	24 Apr 2003 03:29:15 -0000	1.16
>+++ Xrender.c	8 May 2003 15:28:29 -0000
>@@ -64,6 +64,42 @@
> }
> 
> /*
>+ * If the server is missing support for any of the required depths on
>+ * any screen, tell the application that Render is not present.
>+ */
>+
>+#define DEPTH_MASK(d)	(1 << ((d) - 1))
>+    
>+/*
>+ * Render requires support for depth 1, 4, 8, 24 and 32 pixmaps
>+ */
>+
>+#define REQUIRED_DEPTHS	(DEPTH_MASK(1) | \
>+			 DEPTH_MASK(4) | \
>+			 DEPTH_MASK(8) | \
>+			 DEPTH_MASK(24) | \
>+			 DEPTH_MASK(32))
>+    
>+static Bool
>+XRenderHasDepths (Display *dpy)
>+{
>+    int	s;
>+
>+    for (s = 0; s < ScreenCount (dpy); s++)
>+    {
>+	CARD32		    depths = 0;
>+	Screen		    *scr = ScreenOfDisplay (dpy, s);
>+	int		    d;
>+
>+	for (d = 0; d < scr->ndepths; d++)
>+	    depths |= DEPTH_MASK(scr->depths[d].depth);
>+	if (~depths & REQUIRED_DEPTHS)
>+	    return False;
>+    }
>+    return True;
>+}
>+
>+/*
>  * XRenderExtAddDisplay - add a display to this extension. (Replaces
>  * XextAddDisplay)
>  */
>@@ -77,8 +113,12 @@
>     dpyinfo = (XRenderExtDisplayInfo *) Xmalloc (sizeof (XRenderExtDisplayInfo));
>     if (!dpyinfo) return NULL;
>     dpyinfo->display = dpy;
>     dpyinfo->data = NULL;
>-    dpyinfo->codes = XInitExtension (dpy, ext_name);
>+
>+    if (XRenderHasDepths (dpy))
>+	dpyinfo->codes = XInitExtension (dpy, ext_name);
>+    else
>+	dpyinfo->codes = NULL;
> 
>     /*
>      * if the server has the extension, then we can initialize the

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