arch/ogl/sdlgl.c

   1 /*
   2  * $Source: /cvs/cvsroot/d2x/arch/ogl/sdlgl.c,v $
   3  * $Revision: 1.4 $
   4  * $Author: bradleyb $
   5  * $Date: 2001-11-08 10:19:52 $
   6  *
   7  * Graphics functions for SDL-GL.
   8  *
   9  * $Log: not supported by cvs2svn $
  10  * Revision 1.3  2001/11/04 09:02:18  bradleyb
  11  * Hack to keep SDL from screwing up X when it crashes
  12  *
  13  * Revision 1.2  2001/10/31 07:35:48  bradleyb
  14  * Sync with d1x
  15  *
  16  * Revision 1.1  2001/10/25 08:25:34  bradleyb
  17  * Finished moving stuff to arch/blah.  I know, it's ugly, but It'll be easier to sync with d1x.
  18  *
  19  * Revision 1.4  2001/10/09 08:17:07  bradleyb
  20  * changed window caption to include version info
  21  *
  22  * Revision 1.3  2001/10/09 02:58:20  bradleyb
  23  * Added window caption, hide mouse cursor
  24  *
  25  * Revision 1.2  2001/01/29 13:47:52  bradleyb
  26  * Fixed build, some minor cleanups.
  27  *
  28  */
  29
  30 #ifdef HAVE_CONFIG_H
  31 #include <conf.h>
  32 #endif
  33
  34 #include <SDL/SDL.h>
  35 #include "ogl_init.h"
  36 #include "vers_id.h"
  37 #include "error.h"
  38 #include "u_mem.h"
  39 #include "args.h"
  40
  41 static int curx=-1,cury=-1,curfull=0;
  42
  43 void ogl_do_fullscreen_internal(void){
  44         ogl_init_window(curx,cury);
  45 }
  46
  47 void ogl_swap_buffers_internal(void){
  48         SDL_GL_SwapBuffers();
  49 }
  50
  51 int ogl_init_window(int x, int y){
  52         if (gl_initialized){
  53                 if (x==curx && y==cury && curfull==ogl_fullscreen)
  54                         return 0;
  55                 if (ogl_fullscreen || curfull)
  56                         ogl_smash_texture_list_internal();//if we are or were fullscreen, changing vid mode will invalidate current textures
  57         }
  58         SDL_WM_SetCaption(DESCENT_VERSION, "Descent II");
  59         if (!SDL_SetVideoMode(x,y, 16, SDL_OPENGL | (ogl_fullscreen?SDL_FULLSCREEN:0))) {
  60            Error("Could not set %dx%dx16 opengl video mode\n",x,y);
  61         }
  62         SDL_ShowCursor(0);
  63
  64         curx=x;cury=y;curfull=ogl_fullscreen;
  65         gl_initialized=1;
  66
  67         return 0;
  68 }
  69
  70 void ogl_destroy_window(void){
  71         if (gl_initialized){
  72                 ogl_smash_texture_list_internal();
  73                 SDL_ShowCursor(1);
  74                 //gl_initialized=0;
  75                 //well..SDL doesn't really let you kill the window.. so we just need to wait for sdl_quit
  76         }
  77         return;
  78 }
  79
  80 void ogl_init(void){
  81         int t;
  82         if ((t=FindArg("-gl_red")))
  83                 SDL_GL_SetAttribute( SDL_GL_RED_SIZE, atoi(Args[t+1]) );
  84         if ((t=FindArg("-gl_green")))
  85                 SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, atoi(Args[t+1]) );
  86         if ((t=FindArg("-gl_blue")))
  87                 SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, atoi(Args[t+1]) );
  88         if ((t=FindArg("-gl_alpha")))
  89                 SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, atoi(Args[t+1]) );
  90         if ((t=FindArg("-gl_buffer")))
  91                 SDL_GL_SetAttribute( SDL_GL_BUFFER_SIZE, atoi(Args[t+1]) );
  92 //      SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 );
  93 //      SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 );
  94 //      SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 );
  95 //      SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, 8 );
  96
  97
  98         SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE,0);
  99         SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE,0);
 100         SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE,0);
 101         SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE,0);
 102         SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE,0);
 103         SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE,0);
 104         SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1);
 105
 106 }
 107
 108 void ogl_close(void){
 109 #if 0  // shouldn't really be necessary...
 110         if (ogl_fullscreen){
 111                 ogl_fullscreen=0;
 112                 ogl_do_fullscreen_internal();
 113         }
 114 #endif
 115         ogl_destroy_window();
 116 }