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-rw-r--r--src/mesa/main/extensions.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index a7e98cd00f..38227e5b9b 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -735,6 +735,7 @@ _mesa_extension_is_enabled( struct gl_context *ctx, const char *name )
*
* \c MESA_EXTENSION_OVERRIDE is a space-separated list of extensions to
* enable or disable. The list is processed thus:
+ * - Enable recognized extension names that are prefixed with '+'.
* - Disable recognized extension names that are prefixed with '-'.
* - Enable recognized extension names that are not prefixed.
* - Collect unrecognized extension names in a new string.
@@ -761,6 +762,10 @@ get_extension_override( struct gl_context *ctx )
for (ext = strtok(env, " "); ext != NULL; ext = strtok(NULL, " ")) {
int enable;
switch (ext[0]) {
+ case '+':
+ enable = 1;
+ ++ext;
+ break;
case '-':
enable = 0;
++ext;