[quake3] Re: additional vidModes

[Erik Auerswald]

Hi,

On Wed, Jan 18, 2006 at 11:37:26PM +0100, Bruno Kleinert wrote:
> would it even be possible, in windowed mode, to change the resolution by
> resizing the window? i can imagine this might be impossible because
> of that vid_restart q3 command...

The attached patch implements resizing the window. This is disabled by
default, to enable it add "+set r_allowResize 1" to the command line. A
change of this variable needs a vid_restart to take effect.

Resizing results in setting a custom resolution of the new window size
and a vid_restart.

I've tested it on linux/x86 with fvwm, OpenBox 3 and evilwm. These
window managers send a single resize event, so the call to vid_restart
for changing the resolution is unproblematic. Should a WM generate
many resize events for one real resize (to continuously update the
window content) this method does not work well.

Erik
-------------- next part --------------
Index: code/unix/sdl_glimp.c
===================================================================
--- code/unix/sdl_glimp.c	(revision 537)
+++ code/unix/sdl_glimp.c	(working copy)
@@ -124,6 +124,7 @@
 
 cvar_t  *r_allowSoftwareGL;   // don't abort out if the pixelformat claims software
 cvar_t  *r_previousglDriver;
+cvar_t  *r_allowResize; // make window resizable
 
 qboolean GLimp_sdl_init_video(void)
 {
@@ -386,6 +387,18 @@
     case SDL_QUIT:
       Sys_Quit();
       break;
+
+    case SDL_VIDEORESIZE:
+      {
+        char width[10], height[10];
+        Com_sprintf( width, sizeof(width), "%d", e.resize.w );
+        Com_sprintf( height, sizeof(height), "%d", e.resize.h );
+        ri.Cvar_Set( "r_customwidth", width );
+        ri.Cvar_Set( "r_customheight", height );
+        ri.Cvar_Set( "r_mode", "-1" );
+        Cbuf_AddText( "vid_restart" );
+      }
+      break;
     }
   }
 }
@@ -551,6 +564,9 @@
   if (fullscreen)
     flags |= SDL_FULLSCREEN;
 
+  if ( r_allowResize->integer )
+    flags |= SDL_RESIZABLE;
+
   if (!r_colorbits->value)
     colorbits = 24;
   else
@@ -875,6 +891,8 @@
 
   r_previousglDriver = ri.Cvar_Get( "r_previousglDriver", "", CVAR_ROM );
 
+  r_allowResize = ri.Cvar_Get( "r_allowResize", "0", CVAR_ARCHIVE );
+
   InitSig();
 
   IN_Init();   // rcg08312005 moved into glimp.
Index: README
===================================================================
--- README	(revision 537)
+++ README	(working copy)
@@ -115,6 +115,7 @@
 
   ttycon_ansicolor        - enable use of ANSI escape codes in the tty
   r_GLlibCoolDownMsec     - wait for some milliseconds to close GL library
+  r_allowResize           - make window resizable
   com_altivec             - enable use of altivec on PowerPC systems
   s_backend               - read only, indicates the current sound backend
   cl_consoleHistory       - read only, stores the console history