src/core/client/display.cpp

   1 //
   2 //  Copyright (C) 2008 by Martin Moracek
   3 //
   4 //  This program is free software; you can redistribute it and/or modify
   5 //  it under the terms of the GNU General Public License as published by
   6 //  the Free Software Foundation; either version 2 of the License, or
   7 //  (at your option) any later version.
   8 //
   9 //  This program is distributed in the hope that it will be useful,
  10 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 //  GNU General Public License for more details.
  13 //
  14 //  You should have received a copy of the GNU General Public License
  15 //  along with this program; if not, write to the Free Software
  16 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17 //
  18
  19 /**
  20  *  @file display.cpp
  21  *
  22  *  blahblah
  23  */
  24
  25 #include <SDL/SDL.h>
  26
  27 #include "assertion.h"
  28 #include "exception.h"
  29
  30 #include "vfs/logfile.h"
  31
  32 #include "core/client/display.h"
  33
  34 namespace tre {
  35
  36   Display::Display() : fullscreen_(false), stereo_(false)
  37   {
  38     vLog << info("SDL") << "Initializing display..." << std::endl;
  39
  40     // init SDL video
  41     if(SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) {
  42       vLog << err("SDL") << "Unable to initialize SDL.\nReason: "
  43            << SDL_GetError() << std::endl;
  44       throw(Exception("Error intializing display"));
  45     }
  46
  47     vLog << ok("SDL") << "Success. Using driver: "
  48          << GetDriverName() << std::endl;
  49   }
  50
  51   void Display::Init(void)
  52   {
  53     SetDisplayMode(GetDisplayInfo());
  54   }
  55
  56   void Display::SetDisplayMode(const DisplayInfo & nfo)
  57   {
  58     SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1);
  59
  60     // let's try to create a big depth buffer possible
  61     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
  62
  63     // disable the default SDL cursor
  64     SDL_ShowCursor(0);
  65
  66     Uint32 flags = SDL_OPENGL | SDL_HWSURFACE;
  67     if(nfo.fullscreen)
  68       flags |= SDL_FULLSCREEN;
  69     if(nfo.stereo)
  70       flags |= SDL_GL_STEREO;
  71
  72     stereo_ = nfo.stereo;
  73     fullscreen_ = nfo.fullscreen;
  74
  75     vLog << info("SDL") << "New video mode: " << nfo.width << "x"
  76          << nfo.height << "x" << nfo.bpp;
  77     if(fullscreen_)
  78       vLog << " [fullscreen]";
  79     if(stereo_)
  80       vLog << " [stereo]";
  81     vLog << std::endl;
  82
  83     if(!SDL_SetVideoMode(nfo.width, nfo.height, nfo.bpp, flags)) {
  84       vLog << err("SDL") << "Unable to set requested video mode.\nReason: "
  85            << SDL_GetError() << std::endl;
  86       throw(Exception("Error intializing display"));
  87     }
  88   }
  89
  90   const std::string Display::GetDriverName(void) const
  91   {
  92     char tmpstr[40];
  93
  94     DEBUG_ASSERT(SDL_VideoDriverName(tmpstr, 40));
  95
  96     return std::string(tmpstr);
  97   }
  98
  99   const DisplayInfo Display::GetDisplayInfo(void) const
 100   {
 101     const SDL_VideoInfo * info = SDL_GetVideoInfo();
 102
 103     DisplayInfo res;
 104     res.width = info->current_w;
 105     res.height = info->current_h;
 106     res.bpp = info->vfmt->BitsPerPixel;
 107     res.fullscreen = fullscreen_;
 108     res.stereo = stereo_;
 109     return res;
 110   }
 111
 112   const DInfoVector Display::ListModes(void) const
 113   {
 114     SDL_Rect ** modes =  SDL_ListModes(NULL, SDL_FULLSCREEN | SDL_HWSURFACE);
 115
 116     if(!modes)
 117       return DInfoVector();
 118
 119     DisplayInfo info;
 120     DInfoVector res;
 121
 122     uint bits = GetDisplayInfo().bpp;
 123
 124     for(uint i = 0; modes[i]; ++i) {
 125       info.width = modes[i]->w;
 126       info.height = modes[i]->h;
 127       info.bpp = bits;
 128       info.fullscreen = true;
 129       info.stereo = false;
 130       res.push_back(info);
 131     }
 132     return res;
 133   }
 134
 135 }