[Mesa-dev] [PATCH 2/2] xlib: allow GLX_DONT_CARE for glXChooseFBConfig() attribute values

[Brian Paul]

Fixes piglit glx-dont-care-mask test.

Note: This is a candidate for the stable branches.
---
 src/mesa/drivers/x11/fakeglx.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/x11/fakeglx.c b/src/mesa/drivers/x11/fakeglx.c
index 3dca405..5b69a7f 100644
--- a/src/mesa/drivers/x11/fakeglx.c
+++ b/src/mesa/drivers/x11/fakeglx.c
@@ -911,6 +911,17 @@ choose_visual( Display *dpy, int screen, const int *list, GLboolean fbConfig )
 
    while (*parselist) {
 
+      if (fbConfig &&
+          parselist[1] == GLX_DONT_CARE &&
+          parselist[0] != GLX_LEVEL) {
+         /* For glXChooseFBConfig(), skip attributes whose value is
+          * GLX_DONT_CARE (-1), unless it's GLX_LEVEL (which can legitimately be
+          * a negative value).
+          */
+         parselist += 2;
+         continue;
+      }
+
       switch (*parselist) {
 	 case GLX_USE_GL:
             if (fbConfig) {
-- 
1.7.3.4