arch/ogl/sdlgl.c

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