From: Eric Anholt <eric@anholt.net>
Date: Wed, 10 Apr 2013 16:59:41 +0000 (-0700)
Subject: mesa: Add a clarifying comment about EXTRA_ error checking.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=072709da91d403fc9ee69b3a9d4978ae7b24549a;p=mesa.git

mesa: Add a clarifying comment about EXTRA_ error checking.
---

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 73ad8fe5378..adb7bd2312f 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -226,7 +226,13 @@ union value {
  * extensions or specific gl versions) or actions (flush current, new
  * buffers) that we need to do before looking up an enum.  We need to
  * declare them all up front so we can refer to them in the value_desc
- * structs below. */
+ * structs below.
+ *
+ * Each EXTRA_ will be executed.  For EXTRA_* enums of extensions and API
+ * versions, listing multiple ones in an array means an error will be thrown
+ * only if none of them are available.  If you need to check for "AND"
+ * behavior, you would need to make a custom EXTRA_ enum.
+ */
 
 static const int extra_new_buffers[] = {
    EXTRA_NEW_BUFFERS,