[xlib-visual] Allocate 8-entry gray ramp instead of 16-entry

We convert to rgb333 before doing pseudo-color lookup, so we cannot
get more than 8 gray levels anyway.

1 files changed, 3 insertions, 5 deletions

diff --git a/src/cairo-xlib-visual.c b/src/cairo-xlib-visual.c
index a45be53f3..4979da861 100644
--- a/src/cairo-xlib-visual.c
+++ b/src/cairo-xlib-visual.c
@@ -82,12 +82,10 @@ _cairo_xlib_visual_info_create (Display *dpy,
 
     info->visualid = visualid;
 
-    /* Allocate a 16-entry gray ramp and a 5x5x5 color cube. Give up
+    /* Allocate a 8-entry gray ramp and a 5x5x5 color cube. Give up
      * as soon as failures start. */
-    for (gray = 0; gray < 16; gray++) {
-	color.red   = (gray << 12) | (gray << 8) | (gray << 4) | gray;
-	color.green = (gray << 12) | (gray << 8) | (gray << 4) | gray;
-	color.blue  = (gray << 12) | (gray << 8) | (gray << 4) | gray;
+    for (gray = 0; gray < 8; gray++) {
+	color.red = color.green = color.blue = index8_to_short[gray];
 	if (! XAllocColor (dpy, colormap, &color))
 	    goto DONE_ALLOCATE;
     }