cvar: don't change cvars without FCVAR_GLCONFIG variable during opengl.cfg reading

engine/client/vid_common.c

@@ -439,7 +439,7 @@ void GL_InitCommands( void )
 	r_speeds = Cvar_Get( "r_speeds", "0", FCVAR_ARCHIVE, "shows renderer speeds" );
 	r_fullbright = Cvar_Get( "r_fullbright", "0", FCVAR_CHEAT, "disable lightmaps, get fullbright for entities" );
 	r_norefresh = Cvar_Get( "r_norefresh", "0", 0, "disable 3D rendering (use with caution)" );
-	r_showtree = Cvar_Get( "r_showtree", "0", FCVAR_ARCHIVE, "build the graph of visible BSP tree" );
+	r_showtree = Cvar_Get( "r_showtree", "0", FCVAR_ARCHIVE, "build the graph of visible BSP tree" );
 	r_lighting_extended = Cvar_Get( "r_lighting_extended", "1", FCVAR_ARCHIVE, "allow to get lighting from world and bmodels" );
 	r_lighting_modulate = Cvar_Get( "r_lighting_modulate", "0.6", FCVAR_ARCHIVE, "lightstyles modulate scale" );
 	r_lighting_ambient = Cvar_Get( "r_lighting_ambient", "0.3", FCVAR_ARCHIVE, "map ambient lighting scale" );
@@ -473,8 +473,8 @@ void GL_InitCommands( void )
 	gl_clear = Cvar_Get( "gl_clear", "0", FCVAR_ARCHIVE, "clearing screen after each frame" );
 	gl_test = Cvar_Get( "gl_test", "0", 0, "engine developer cvar for quick testing new features" );
 	gl_wireframe = Cvar_Get( "gl_wireframe", "0", FCVAR_ARCHIVE|FCVAR_SPONLY, "show wireframe overlay" );
-	gl_wgl_msaa_samples = Cvar_Get( "gl_wgl_msaa_samples", "4", FCVAR_GLCONFIG, "enable multisample anti-aliasing" );
-	gl_msaa = Cvar_Get( "gl_msaa", "2", FCVAR_ARCHIVE, "enable multi sample anti-aliasing" );
+	gl_wgl_msaa_samples = Cvar_Get( "gl_wgl_msaa_samples", "0", FCVAR_GLCONFIG, "samples number for multisample anti-aliasing" );
+	gl_msaa = Cvar_Get( "gl_msaa", "1", FCVAR_ARCHIVE, "enable or disable multisample anti-aliasing" );
 	gl_stencilbits = Cvar_Get( "gl_stencilbits", "8", FCVAR_GLCONFIG, "pixelformat stencil bits (0 - auto)" );
 	gl_round_down = Cvar_Get( "gl_round_down", "2", FCVAR_RENDERINFO, "round texture sizes to nearest POT value" );
 	// these cvar not used by engine but some mods requires this

engine/common/cvar.c

@@ -710,6 +710,26 @@ void Cvar_SetCheatState( void )
 	}
 }
 
+/*
+============
+Cvar_SetGL
+
+As Cvar_Set, but also flags it as glconfig
+============
+*/
+static void Cvar_SetGL( const char *name, const char *value )
+{
+	convar_t *var = Cvar_FindVar( name );
+
+	if( var && !FBitSet( var->flags, FCVAR_GLCONFIG ))
+	{
+		Con_Reportf( S_ERROR "Can't set non-GL cvar %s to %s\n", name, value );
+		return;
+	}
+
+	Cvar_FullSet( name, value, FCVAR_GLCONFIG );
+}
+
 /*
 ============
 Cvar_Command
@@ -722,7 +742,7 @@ qboolean Cvar_Command( convar_t *v )
 	// special case for setup opengl configuration
 	if( host.apply_opengl_config )
 	{
-		Cvar_FullSet( Cmd_Argv( 0 ), Cmd_Argv( 1 ), FCVAR_GLCONFIG );
+		Cvar_SetGL( Cmd_Argv( 0 ), Cmd_Argv( 1 ) );
 		return true;
 	}
 
@@ -811,13 +831,15 @@ As Cvar_Set, but also flags it as glconfig
 */
 void Cvar_SetGL_f( void )
 {
+	convar_t *var;
+
 	if( Cmd_Argc() != 3 )
 	{
 		Con_Printf( S_USAGE "setgl <variable> <value>\n" );
 		return;
 	}
 
-	Cvar_FullSet( Cmd_Argv( 1 ), Cmd_Argv( 2 ), FCVAR_GLCONFIG );
+	Cvar_SetGL( Cmd_Argv( 1 ), Cmd_Argv( 2 ) );
 }
 
 /*
@@ -910,7 +932,7 @@ void Cvar_Init( void )
 	cmd_scripting = Cvar_Get( "cmd_scripting", "0", FCVAR_ARCHIVE, "enable simple condition checking and variable operations" );
 	Cvar_RegisterVariable (&host_developer); // early registering for dev 
 
-	Cmd_AddCommand( "setgl", Cvar_SetGL_f, "create or change the value of a opengl variable" );	// OBSOLETE
+	Cmd_AddCommand( "setgl", Cvar_SetGL_f, "change the value of a opengl variable" );	// OBSOLETE
 	Cmd_AddCommand( "toggle", Cvar_Toggle_f, "toggles a console variable's values (use for more info)" );
 	Cmd_AddCommand( "reset", Cvar_Reset_f, "reset any type variable to initial value" );
 	Cmd_AddCommand( "cvarlist", Cvar_List_f, "display all console variables beginning with the specified prefix" );