added COMMANDLINEOPTION comments for every commandline option, these will be listed...

[xonotic/darkplaces.git] / vid_wgl.c

diff --git a/vid_wgl.c b/vid_wgl.c
index 99235ff2a63aa44fe5ff60e50d9e68f942778113..7b64cd0e325fc6489288b9539fcc315c6e334bd9 100644 (file)
--- a/vid_wgl.c
+++ b/vid_wgl.c
@@ -311,7 +311,8 @@ void VID_Finish (void)
        {
                old_vsync = bound(0, vid_vsync.integer, 1);
                Cvar_SetValueQuick(&vid_vsync, old_vsync);
-               qwglSwapIntervalEXT (old_vsync);
+               if (gl_videosyncavailable)
+                       qwglSwapIntervalEXT (old_vsync);
        }
 
        if (r_render.integer && !scr_skipupdate)
@@ -810,6 +811,7 @@ int VID_InitMode (int fullscreen, int width, int height, int bpp)
        }
 
        gldrivername = "opengl32.dll";
+// COMMANDLINEOPTION: -gl_driver <drivername> selects a GL driver library, default is libGL.so.1 (Linux/BSD) or opengl32.dll (windows) or /usr/X11R6/lib/libGL.1.dylib (MacOSX), if you don't know what this is for, you don't need it
        i = COM_CheckParm("-gl_driver");
        if (i && i < com_argc - 1)
                gldrivername = com_argv[i + 1];
@@ -985,10 +987,13 @@ int VID_InitMode (int fullscreen, int width, int height, int bpp)
        gl_platform = "WGL";
        gl_platformextensions = "";
 
+       gl_videosyncavailable = false;
+
        if (qwglGetExtensionsStringARB)
                gl_platformextensions = qwglGetExtensionsStringARB(hdc);
 
-       gl_videosyncavailable = GL_CheckExtension("WGL_EXT_swap_control", wglswapintervalfuncs, NULL, false);
+// COMMANDLINEOPTION: -novideosync disables WGL_EXT_swap_control (required for video sync control on WGL)
+       gl_videosyncavailable = GL_CheckExtension("WGL_EXT_swap_control", wglswapintervalfuncs, "-novideosync", false);
        ReleaseDC(mainwindow, hdc);
 
        GL_Init ();
@@ -1261,11 +1266,13 @@ IN_StartupMouse
 */
 void IN_StartupMouse (void)
 {
+// COMMANDLINEOPTION: -nomouse disables mouse support (see also vid_mouse cvar)
        if (COM_CheckParm ("-nomouse") || COM_CheckParm("-safe"))
                return;
 
        mouseinitialized = true;
 
+// COMMANDLINEOPTION: -dinput uses DirectInput for mouse/joystick input, may be more precise or responsive, but probably not (windows only)
        if (COM_CheckParm ("-dinput"))
        {
                dinput = IN_InitDInput ();
@@ -1286,15 +1293,18 @@ void IN_StartupMouse (void)
 
                if (mouseparmsvalid)
                {
+// COMMANDLINEOPTION: -noforcemspd disables setting of mouse speed (ignored with -dinput, windows only)
                        if ( COM_CheckParm ("-noforcemspd") )
                                newmouseparms[2] = originalmouseparms[2];
 
+// COMMANDLINEOPTION: -noforcemaccel disables setting of mouse acceleration (ignored with -dinput, windows only)
                        if ( COM_CheckParm ("-noforcemaccel") )
                        {
                                newmouseparms[0] = originalmouseparms[0];
                                newmouseparms[1] = originalmouseparms[1];
                        }
 
+// COMMANDLINEOPTION: -noforcemparms disables setting of mouse parameters (ignored with -dinput, windows only)
                        if ( COM_CheckParm ("-noforcemparms") )
                        {
                                newmouseparms[0] = originalmouseparms[0];
@@ -1528,6 +1538,7 @@ void IN_StartupJoystick (void)
        joy_avail = false;
 
        // abort startup if user requests no joystick
+// COMMANDLINEOPTION: -nojoy disables joystick support, may be a small speed increase
        if (COM_CheckParm ("-nojoy") || COM_CheckParm("-safe"))
                return;