Mesa (master): mesa: update comments in update_program_enables()

[Brian Paul]

Module: Mesa
Branch: master
Commit: 3c95ff209f72bacd1b5807c97e1dee079e9206b3
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=3c95ff209f72bacd1b5807c97e1dee079e9206b3

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Jun 22 08:12:10 2011 -0600

mesa: update comments in update_program_enables()

---

 src/mesa/main/state.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/mesa/main/state.c b/src/mesa/main/state.c
index 59a4e16..4389415 100644
--- a/src/mesa/main/state.c
+++ b/src/mesa/main/state.c
@@ -192,7 +192,10 @@ update_arrays( struct gl_context *ctx )
 static void
 update_program_enables(struct gl_context *ctx)
 {
-   /* These _Enabled flags indicate if the program is enabled AND valid. */
+   /* These _Enabled flags indicate if the user-defined ARB/NV vertex/fragment
+    * program is enabled AND valid.  Similarly for ATI fragment shaders.
+    * GLSL shaders not relevant here.
+    */
    ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled
       && ctx->VertexProgram.Current->Base.Instructions;
    ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled