From 29ed69737c5b5719649d1988217f6bbeb565de1a Mon Sep 17 00:00:00 2001
From: tma <tma@edf5b092-35ff-0310-97b2-ce42778d08ea>
Date: Fri, 8 Aug 2008 21:35:33 +0000
Subject: * Add Sys_GLimpInit for platform specific GLimp initialisation * Move
 Unix specific signal handlers to Sys_PlatformInit * (Windows only) Don't set
 the SDL video driver if SDL_VIDEODRIVER is already   set externally *
 (Windows only) Use the "windib" SDL video driver if in_mouse is set to -1

git-svn-id: svn://svn.icculus.org/quake3/trunk@1440 edf5b092-35ff-0310-97b2-ce42778d08ea
---
 code/sys/sys_win32.c | 46 ++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 44 insertions(+), 2 deletions(-)

(limited to 'code/sys/sys_win32.c')

diff --git a/code/sys/sys_win32.c b/code/sys/sys_win32.c
index 79998dc..eeee856 100644
--- a/code/sys/sys_win32.c
+++ b/code/sys/sys_win32.c
@@ -577,6 +577,40 @@ void Sys_ErrorDialog( const char *error )
 	}
 }
 
+#ifndef DEDICATED
+static qboolean SDL_VIDEODRIVER_externallySet = qfalse;
+#endif
+
+/*
+==============
+Sys_GLimpInit
+
+Windows specific GL implementation initialisation
+==============
+*/
+void Sys_GLimpInit( void )
+{
+#ifndef DEDICATED
+	if( !SDL_VIDEODRIVER_externallySet )
+	{
+		// It's a little bit weird having in_mouse control the
+		// video driver, but from ioq3's point of view they're
+		// virtually the same except for the mouse input anyway
+		if( Cvar_VariableIntegerValue( "in_mouse" ) == -1 )
+		{
+			// Use the windib SDL backend, which is closest to
+			// the behaviour of idq3 with in_mouse set to -1
+			_putenv( "SDL_VIDEODRIVER=windib" );
+		}
+		else
+		{
+			// Use the DirectX SDL backend
+			_putenv( "SDL_VIDEODRIVER=directx" );
+		}
+	}
+#endif
+}
+
 /*
 ==============
 Sys_PlatformInit
@@ -587,7 +621,15 @@ Windows specific initialisation
 void Sys_PlatformInit( void )
 {
 #ifndef DEDICATED
-	// Force the DirectX SDL backend to be used
-	_putenv( "SDL_VIDEODRIVER=directx" );
+	const char *SDL_VIDEODRIVER = getenv( "SDL_VIDEODRIVER" );
+
+	if( SDL_VIDEODRIVER )
+	{
+		Com_Printf( "SDL_VIDEODRIVER is externally set to \"%s\", "
+				"in_mouse -1 will have no effect\n", SDL_VIDEODRIVER );
+		SDL_VIDEODRIVER_externallySet = qtrue;
+	}
+	else
+		SDL_VIDEODRIVER_externallySet = qfalse;
 #endif
 }
-- 
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