ref: 025459ccb43b0a5a23cbb4453c9a0a1139b0bb2d
parent: 3d1cf028d866c9fabce4cfdcaadbe87bba29256a
author: Simon Howard <fraggle@gmail.com>
date: Sat Mar 18 18:42:03 EST 2006
Auto adjust settings when running fullscreen so that we run in a valid video mode. Subversion-branch: /trunk/chocolate-doom Subversion-revision: 427
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1,7 +1,7 @@
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
-// $Id: i_video.c 415 2006-03-10 01:49:25Z fraggle $
+// $Id: i_video.c 427 2006-03-18 23:42:03Z fraggle $
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
@@ -175,7 +175,7 @@
//-----------------------------------------------------------------------------
static const char
-rcsid[] = "$Id: i_video.c 415 2006-03-10 01:49:25Z fraggle $";
+rcsid[] = "$Id: i_video.c 427 2006-03-18 23:42:03Z fraggle $";
#include <SDL.h>
#include <ctype.h>
@@ -880,6 +880,40 @@
SDL_FreeSurface(surface);
}
+// Check if a screen mode is in the list available
+// Not all machines support running in 320x200/640x400 (only support 4:3)
+// Some don't even support modes below 640x480.
+
+static boolean CheckValidFSMode(int w, int h)
+{+ SDL_Rect **modes;
+ int i;
+
+ modes = SDL_ListModes(NULL, SDL_FULLSCREEN);
+
+ for (i=0; modes[i]; ++i)
+ {+ if (w == modes[i]->w && h == modes[i]->h)
+ return true;
+ }
+
+ // not found
+
+ return false;
+}
+
+// Get window dimensions for the current settings
+
+static void GetWindowDimensions(int *windowwidth, int *windowheight)
+{+ *windowwidth = SCREENWIDTH * screenmultiply;
+
+ if (fullscreen == FULLSCREEN_LETTERBOX)
+ *windowheight = LETTERBOX_SCREENHEIGHT * screenmultiply;
+ else
+ *windowheight = SCREENHEIGHT * screenmultiply;
+}
+
void I_InitGraphics(void)
{SDL_Event dummy;
@@ -933,12 +967,44 @@
if (screenmultiply > 2)
screenmultiply = 2;
- windowwidth = SCREENWIDTH * screenmultiply;
+ GetWindowDimensions(&windowwidth, &windowheight);
- if (fullscreen == FULLSCREEN_LETTERBOX)
- windowheight = LETTERBOX_SCREENHEIGHT * screenmultiply;
- else
- windowheight = SCREENHEIGHT * screenmultiply;
+ if (fullscreen)
+ {+ if (!CheckValidFSMode(windowwidth, windowheight) && screenmultiply == 1)
+ {+ // This is not a valid video mode. Try doubling up the screen
+ // if we are running at 320x200.
+
+ printf("I_InitGraphics: Invalid mode %ix%i: turning on "+ "scale x2 mode (screenmultiply=2)\n",
+ windowwidth, windowheight);
+
+ screenmultiply = 2;
+
+ GetWindowDimensions(&windowwidth, &windowheight);
+ }
+
+ if (!CheckValidFSMode(windowwidth, windowheight) && fullscreen == 1)
+ {+ // This is not a valid mode. Try turning on letterbox mode
+ // (640x400 -> 640x480)
+
+ printf("I_InitGraphics: Invalid mode %ix%i: turning on "+ "letterbox mode (fullscreen=2)\n",
+ windowwidth, windowheight);
+
+ fullscreen = 2;
+
+ GetWindowDimensions(&windowwidth, &windowheight);
+ }
+
+ if (!CheckValidFSMode(windowwidth, windowheight))
+ {+ printf("I_InitGraphics: WARNING: Unable to find a valid "+ "fullscreen video mode to run in.\n");
+ }
+ }
screen = SDL_SetVideoMode(windowwidth, windowheight, 8, flags);