Mesa (gallium-0.2): mesa: comments for some state vars

[Brian Paul]

Module: Mesa
Branch: gallium-0.2
Commit: 6f346ec0b85375defd049029fa781531fdabda56
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6f346ec0b85375defd049029fa781531fdabda56

Author: Brian Paul <brianp at vmware.com>
Date:   Tue Dec 30 17:00:36 2008 -0700

mesa: comments for some state vars

---

 src/mesa/shader/prog_statevars.h |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/mesa/shader/prog_statevars.h b/src/mesa/shader/prog_statevars.h
index d309114..909bce0 100644
--- a/src/mesa/shader/prog_statevars.h
+++ b/src/mesa/shader/prog_statevars.h
@@ -79,10 +79,10 @@ typedef enum gl_state_index_ {
    STATE_SHININESS,
    STATE_HALF_VECTOR,
 
-   STATE_POSITION,
-   STATE_ATTENUATION,
-   STATE_SPOT_DIRECTION,
-   STATE_SPOT_CUTOFF,
+   STATE_POSITION,       /**< xyzw = position */
+   STATE_ATTENUATION,    /**< xyz = attenuation, w = spot exponent */
+   STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */
+   STATE_SPOT_CUTOFF,    /**< x = cutoff, yzw = undefined */
 
    STATE_TEXGEN_EYE_S,
    STATE_TEXGEN_EYE_T,