arch/ogl/sdlgl.c

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