From: Michal Krol <michal@vmware.com>
Date: Mon, 4 Jan 2010 12:38:58 +0000 (+0100)
Subject: docs: Explain TGSI_SEMANTIC_NORMAL.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=86b336f71b21c813a1fa890440553aedcfb08fa7;p=mesa.git

docs: Explain TGSI_SEMANTIC_NORMAL.
---

diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
index 492a1b7ea30..ebee4902b05 100644
--- a/src/gallium/docs/source/tgsi.rst
+++ b/src/gallium/docs/source/tgsi.rst
@@ -1253,7 +1253,8 @@ can be stored inside a four-component vector.
 TGSI_SEMANTIC_NORMAL
 """"""""""""""""""""
 
-XXX no clue.
+Vertex normal; could be used to implement per-pixel lighting for legacy APIs
+that allow mixing fixed-function and programmable stages.
 
 TGSI_SEMANTIC_FACE
 """"""""""""""""""