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-rw-r--r--src/glx/glxcmds.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c
index 38b90594580..3856032ce68 100644
--- a/src/glx/glxcmds.c
+++ b/src/glx/glxcmds.c
@@ -1630,6 +1630,29 @@ glXCreateNewContext(Display * dpy, GLXFBConfig fbconfig,
int renderType, GLXContext shareList, Bool allowDirect)
{
struct glx_config *config = (struct glx_config *) fbconfig;
+ int screen = DefaultScreen(dpy);
+ struct glx_config **config_list;
+ int list_size;
+ unsigned i;
+
+ if (!config) {
+ __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
+ return NULL;
+ }
+
+ config_list = (struct glx_config **)
+ glXGetFBConfigs(dpy, screen, &list_size);
+
+ for (i = 0; i < list_size; i++) {
+ if (config_list[i] == config)
+ break;
+ }
+ free(config_list);
+
+ if (i == list_size) {
+ __glXSendError(dpy, GLXBadFBConfig, 0, X_GLXCreateNewContext, false);
+ return NULL;
+ }
return CreateContext(dpy, config->fbconfigID, config, shareList,
allowDirect, X_GLXCreateNewContext, renderType,