From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Sat, 29 Oct 2005 18:18:46 +0000 (+0000)
Subject: reduced swizzle comment
X-Git-Tag: 062012170305~21786
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5b3cf5af74fe459ea6ebda4dec803b26b40c5b1f;p=profile%2Fivi%2Fmesa.git

reduced swizzle comment
---

diff --git a/src/mesa/tnl/t_vb_arbprogram.h b/src/mesa/tnl/t_vb_arbprogram.h
index 92ae461..27f878c 100644
--- a/src/mesa/tnl/t_vb_arbprogram.h
+++ b/src/mesa/tnl/t_vb_arbprogram.h
@@ -112,6 +112,10 @@ union instruction {
    GLuint dword;
 };
 
+
+/**
+ * Reduced swizzle is a 2-bit field; only X/Y/Z/W are allowed, not 0/1.
+ */
 #define RSW_NOOP ((0<<0) | (1<<2) | (2<<4) | (3<<6))
 #define GET_RSW(swz, idx)      (((swz) >> ((idx)*2)) & 0x3)