From e2321d816b03aa890b2fd320cc6caded2c2ead3a Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Thu, 26 Nov 2015 09:06:42 +0000
Subject: [PATCH] Fog: move setting of GL_FOG_MODE to GL_EXP2 to a new
 Fog_SetupState() function and call it in VID_Restart.

Fixes bug where the fog mode was resetting to the default (GL_EXP) after a mode switch, causing fog to look different. This was only affecting SDL1 for me.

git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@1259 af15c1b1-3010-417e-b628-4374ebc0bcbd
---
 Quake/gl_fog.c    | 12 ++++++++++++
 Quake/gl_vidsdl.c |  1 +
 Quake/glquake.h   |  1 +
 3 files changed, 14 insertions(+)

diff --git a/Quake/gl_fog.c b/Quake/gl_fog.c
index a120aee5..e0e3996a 100644
--- a/Quake/gl_fog.c
+++ b/Quake/gl_fog.c
@@ -394,5 +394,17 @@ void Fog_Init (void)
 	fog_green = DEFAULT_GRAY;
 	fog_blue = DEFAULT_GRAY;
 
+	Fog_SetupState ();
+}
+
+/*
+=============
+Fog_SetupState
+ 
+ericw -- moved from Fog_Init, state that needs to be setup when a new context is created
+=============
+*/
+void Fog_SetupState (void)
+{
 	glFogi(GL_FOG_MODE, GL_EXP2);
 }
diff --git a/Quake/gl_vidsdl.c b/Quake/gl_vidsdl.c
index 050d538e..7e2fe738 100644
--- a/Quake/gl_vidsdl.c
+++ b/Quake/gl_vidsdl.c
@@ -760,6 +760,7 @@ static void VID_Restart (void)
 	GL_BuildBModelVertexBuffer ();
 	GLMesh_LoadVertexBuffers ();
 	GL_SetupState ();
+	Fog_SetupState ();
 
 	//warpimages needs to be recalculated
 	TexMgr_RecalcWarpImageSize ();
diff --git a/Quake/glquake.h b/Quake/glquake.h
index c596fb52..a9df1e4a 100644
--- a/Quake/glquake.h
+++ b/Quake/glquake.h
@@ -313,6 +313,7 @@ void Fog_StopAdditive (void);
 void Fog_SetupFrame (void);
 void Fog_NewMap (void);
 void Fog_Init (void);
+void Fog_SetupState (void);
 
 void R_NewGame (void);