From 2aeb3fc5c3b423cf0cb08c930bbcd256d25019eb Mon Sep 17 00:00:00 2001
From: Martin Pulec <pulec@cesnet.cz>
Date: Mon, 30 Apr 2012 18:52:43 +0200
Subject: [PATCH] DXT: fixed crash when unable to get context

---
 ultragrid/src/video_compress/dxt_glsl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ultragrid/src/video_compress/dxt_glsl.c b/ultragrid/src/video_compress/dxt_glsl.c
index 39473044d..c2aafe7e5 100644
--- a/ultragrid/src/video_compress/dxt_glsl.c
+++ b/ultragrid/src/video_compress/dxt_glsl.c
@@ -208,7 +208,9 @@ void * dxt_glsl_compress_init(char * opts)
                 s->gl_context = glx_init(OPENGL_VERSION_UNSPECIFIED);
                 s->legacy = TRUE;
         }
-        glx_validate(s->gl_context);
+        if(s->gl_context) {
+                glx_validate(s->gl_context);
+        }
 #else
         s->gl_context = NULL;
         if(get_mac_kernel_version_major() >= 11) {
@@ -229,7 +231,6 @@ void * dxt_glsl_compress_init(char * opts)
 
         if(!s->gl_context) {
                 fprintf(stderr, "[RTDXT] Error initializing GLX context");
-                exit_uv(128);
                 return NULL;
         }