From 6a0bf78cdb1b3ddeeb1a21d80b4b3b7e6f2720ef Mon Sep 17 00:00:00 2001
From: black <black@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Wed, 19 Nov 2003 14:59:56 +0000
Subject: [PATCH] vid_hardwaregammasupported is now a read-only cvar

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@3662 d7cf8633-e32d-0410-b094-e92efae38249
---
 menu.c       | 12 ++++++------
 vid.h        |  2 +-
 vid_shared.c |  9 +++++----
 3 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/menu.c b/menu.c
index 73ff178a..180166f5 100644
--- a/menu.c
+++ b/menu.c
@@ -1649,8 +1649,8 @@ void M_Options_ColorControl_Draw (void)
 	opty = 32 - bound(0, optcursor - (visible >> 1), max(0, OPTIONS_COLORCONTROL_ITEMS - visible)) * 8;
 
 	M_Options_PrintCommand( "     Reset to defaults", true);
-	M_Options_PrintCheckbox("Hardware Gamma Control", vid_hardwaregammasupported, v_hwgamma.integer);
-	M_Options_PrintSlider(  "                 Gamma", !v_color_enable.integer && vid_hardwaregammasupported && v_hwgamma.integer, v_gamma.value, 1, 5);
+	M_Options_PrintCheckbox("Hardware Gamma Control", vid_hardwaregammasupported.integer, v_hwgamma.integer);
+	M_Options_PrintSlider(  "                 Gamma", !v_color_enable.integer && vid_hardwaregammasupported.integer && v_hwgamma.integer, v_gamma.value, 1, 5);
 	M_Options_PrintSlider(  "              Contrast", !v_color_enable.integer, v_contrast.value, 1, 5);
 	M_Options_PrintSlider(  "            Brightness", !v_color_enable.integer, v_brightness.value, 0, 0.8);
 	M_Options_PrintCheckbox("  Color Level Controls", true, v_color_enable.integer);
@@ -1658,10 +1658,10 @@ void M_Options_ColorControl_Draw (void)
 	M_Options_PrintSlider(  "          Black: Green", v_color_enable.integer, v_color_black_g.value, 0, 0.8);
 	M_Options_PrintSlider(  "          Black: Blue ", v_color_enable.integer, v_color_black_b.value, 0, 0.8);
 	M_Options_PrintSlider(  "          Black: Grey ", v_color_enable.integer, (v_color_black_r.value + v_color_black_g.value + v_color_black_b.value) / 3, 0, 0.8);
-	M_Options_PrintSlider(  "           Grey: Red  ", v_color_enable.integer && vid_hardwaregammasupported && v_hwgamma.integer, v_color_grey_r.value, 0, 0.95);
-	M_Options_PrintSlider(  "           Grey: Green", v_color_enable.integer && vid_hardwaregammasupported && v_hwgamma.integer, v_color_grey_g.value, 0, 0.95);
-	M_Options_PrintSlider(  "           Grey: Blue ", v_color_enable.integer && vid_hardwaregammasupported && v_hwgamma.integer, v_color_grey_b.value, 0, 0.95);
-	M_Options_PrintSlider(  "           Grey: Grey ", v_color_enable.integer && vid_hardwaregammasupported && v_hwgamma.integer, (v_color_grey_r.value + v_color_grey_g.value + v_color_grey_b.value) / 3, 0, 0.95);
+	M_Options_PrintSlider(  "           Grey: Red  ", v_color_enable.integer && vid_hardwaregammasupported.integer && v_hwgamma.integer, v_color_grey_r.value, 0, 0.95);
+	M_Options_PrintSlider(  "           Grey: Green", v_color_enable.integer && vid_hardwaregammasupported.integer && v_hwgamma.integer, v_color_grey_g.value, 0, 0.95);
+	M_Options_PrintSlider(  "           Grey: Blue ", v_color_enable.integer && vid_hardwaregammasupported.integer && v_hwgamma.integer, v_color_grey_b.value, 0, 0.95);
+	M_Options_PrintSlider(  "           Grey: Grey ", v_color_enable.integer && vid_hardwaregammasupported.integer && v_hwgamma.integer, (v_color_grey_r.value + v_color_grey_g.value + v_color_grey_b.value) / 3, 0, 0.95);
 	M_Options_PrintSlider(  "          White: Red  ", v_color_enable.integer, v_color_white_r.value, 1, 5);
 	M_Options_PrintSlider(  "          White: Green", v_color_enable.integer, v_color_white_g.value, 1, 5);
 	M_Options_PrintSlider(  "          White: Blue ", v_color_enable.integer, v_color_white_b.value, 1, 5);
diff --git a/vid.h b/vid.h
index bbd593d6..df206114 100644
--- a/vid.h
+++ b/vid.h
@@ -44,7 +44,7 @@ extern void (*vid_menukeyfn)(int key);
 extern int vid_hidden;
 extern int vid_activewindow;
 extern int vid_allowhwgamma;
-extern int vid_hardwaregammasupported;
+extern cvar_t vid_hardwaregammasupported;
 extern int vid_usinghwgamma;
 
 extern cvar_t vid_fullscreen;
diff --git a/vid_shared.c b/vid_shared.c
index c32497e3..7589a181 100644
--- a/vid_shared.c
+++ b/vid_shared.c
@@ -50,7 +50,7 @@ int vid_activewindow = true;
 int vid_allowhwgamma = false;
 
 // we don't know until we try it!
-int vid_hardwaregammasupported = true;
+cvar_t vid_hardwaregammasupported = {CVAR_READONLY,"vid_hardwaregammasupported","1"};
 // whether hardware gamma ramps are currently in effect
 int vid_usinghwgamma = false;
 
@@ -626,7 +626,7 @@ void VID_UpdateGamma(qboolean force)
 		if (!vid_usinghwgamma)
 		{
 			vid_usinghwgamma = true;
-			vid_hardwaregammasupported = VID_GetGamma(vid_systemgammaramps);
+			Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_GetGamma(vid_systemgammaramps));
 		}
 
 		BOUNDCVAR(v_gamma, 0.1, 5);cachegamma = v_gamma.value;
@@ -657,14 +657,14 @@ void VID_UpdateGamma(qboolean force)
 			BuildGammaTable16(1.0f, cachegamma, cachecontrast, cachebrightness, vid_gammaramps + 512);
 		}
 
-		vid_hardwaregammasupported = VID_SetGamma(vid_gammaramps);
+		Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_SetGamma(vid_gammaramps));
 	}
 	else
 	{
 		if (vid_usinghwgamma)
 		{
 			vid_usinghwgamma = false;
-			vid_hardwaregammasupported = VID_SetGamma(vid_systemgammaramps);
+			Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_SetGamma(vid_systemgammaramps));
 		}
 	}
 }
@@ -680,6 +680,7 @@ void VID_RestoreSystemGamma(void)
 
 void VID_Shared_Init(void)
 {
+	Cvar_RegisterVariable(&vid_hardwaregammasupported);
 	Cvar_RegisterVariable(&v_gamma);
 	Cvar_RegisterVariable(&v_brightness);
 	Cvar_RegisterVariable(&v_contrast);
-- 
2.39.2