From 4caa237d5f10458c4da666fe33613d0359f11784 Mon Sep 17 00:00:00 2001
From: Ludwig Nussel <ludwig.nussel@suse.de>
Date: Thu, 8 Sep 2005 08:34:32 +0000
Subject: [PATCH] use r_ignorehwgamma cvar to allow user to disable gamma
 correction

---
 code/unix/sdl_glimp.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/code/unix/sdl_glimp.c b/code/unix/sdl_glimp.c
index be5b693a..c20f394c 100644
--- a/code/unix/sdl_glimp.c
+++ b/code/unix/sdl_glimp.c
@@ -442,7 +442,12 @@ void GLimp_SetGamma( unsigned char red[256], unsigned char green[256], unsigned
 {
   // NOTE TTimo we get the gamma value from cvar, because we can't work with the s_gammatable
   //   the API wasn't changed to avoid breaking other OSes
-  float g = Cvar_Get("r_gamma", "1.0", 0)->value;
+  float g;
+
+  if ( r_ignorehwgamma->integer )
+    return;
+
+  g  = Cvar_Get("r_gamma", "1.0", 0)->value;
   SDL_SetGamma(g, g, g);
 }
 
@@ -1450,3 +1455,4 @@ void IN_JoyMove( void )
 // end of linux_glimp_sdl.c ...
 
 
+