From: Brian <brian.paul@tungstengraphics.com>
Date: Wed, 17 Oct 2007 00:46:14 +0000 (-0600)
Subject: lower clamp bound for UNCLAMPED_FLOAT_TO_SHORT() is -1
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7db3cf8c48a3fb73cd742dbc02394f10027db9ed;p=mesa.git

lower clamp bound for UNCLAMPED_FLOAT_TO_SHORT() is -1
---

diff --git a/src/mesa/pipe/softpipe/sp_surface.c b/src/mesa/pipe/softpipe/sp_surface.c
index 02a072fe9be..292676a302a 100755
--- a/src/mesa/pipe/softpipe/sp_surface.c
+++ b/src/mesa/pipe/softpipe/sp_surface.c
@@ -47,7 +47,7 @@
 #define SHORT_TO_FLOAT(S)   ((2.0F * (S) + 1.0F) * (1.0F/65535.0F))
 
 #define UNCLAMPED_FLOAT_TO_SHORT(us, f)  \
-   us = ( (short) ( CLAMP((f), 0.0, 1.0) * 32767.0F) )
+   us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )