From: Chad Versace <chad.versace@intel.com>
Date: Thu, 27 Jan 2011 09:40:47 +0000 (-0800)
Subject: mesa: Allow extensions in MESA_EXTENSION_OVERRIDE to be prefixed with '+'
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ad3dc370d86e3cfdb5e766bbf6dfbf247807044c;p=mesa.git

mesa: Allow extensions in MESA_EXTENSION_OVERRIDE to be prefixed with '+'

If an extension is prefixed with '+', attempt to enable it.  This
introduces symmetry with the prefix '-', which is already allowed.
---

diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index a7e98cd00f5..38227e5b9be 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;