mesa: adds some comments regarding MESA_GLES_VERSION_OVERRIDE usage

Fixes: 03fd6704db9 ("mesa: Add support for a new override string
MESA_GLES_VERSION_OVERRIDE")

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

diff --git a/src/mesa/main/version.c b/src/mesa/main/version.c
index 3b51b1e7a3610fcf514fda5f71769cf920edb759..0a4e7630da6e7898ea2b95ba237be8abf6241864 100644 (file)
--- a/src/mesa/main/version.c
+++ b/src/mesa/main/version.c
@@ -134,8 +134,8 @@ create_version_string(struct gl_context *ctx, const char *prefix)
 }
 
 /**
- * Override the context's version and/or API type if the
- * environment variable MESA_GL_VERSION_OVERRIDE is set.
+ * Override the context's version and/or API type if the environment variables
+ * MESA_GL_VERSION_OVERRIDE or MESA_GLES_VERSION_OVERRIDE are set.
  *
  * Example uses of MESA_GL_VERSION_OVERRIDE:
  *
@@ -148,6 +148,12 @@ create_version_string(struct gl_context *ctx, const char *prefix)
  * X.Y: override GL version to X.Y without changing the profile.
  * X.YFC: select a Core+Forward Compatible profile with GL version X.Y.
  * X.YCOMPAT: select a Compatibility profile with GL version X.Y.
+ *
+ * Example uses of MESA_GLES_VERSION_OVERRIDE:
+ *
+ * 2.0: select GLES version 2.0.
+ * 3.0: select GLES version 3.0.
+ * 3.1: select GLES version 3.1.
  */
 bool
 _mesa_override_gl_version_contextless(struct gl_constants *consts,