hw_main.c

The source code of Doom legacy for windows

// Emacs style mode select   -*- C++ -*-
//-----------------------------------------------------------------------------
//
// $Id: hw_main.c,v 1.73 2001/05/07 20:27:16 stroggonmeth Exp $
//
// Copyright (C) 1998-2000 by DooM Legacy Team.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
//
// $Log: hw_main.c,v $
// Revision 1.73  2001/05/07 20:27:16  stroggonmeth
// no message
//
// Revision 1.72  2001/05/03 21:52:23  hurdler
// fix bis
//
// Revision 1.71  2001/05/03 20:05:56  hurdler
// small opengl fix
//
// Revision 1.70  2001/05/01 20:38:34  hurdler
// some fix/hack for the beta release
//
// Revision 1.69  2001/04/30 21:00:10  stroggonmeth
// Another HWR fix
//
// Revision 1.68  2001/04/30 17:19:25  stroggonmeth
// HW fix and misc. changes
//
// Revision 1.67  2001/04/27 13:32:14  bpereira
// no message
//
// Revision 1.66  2001/04/18 23:22:00  hurdler
// Until SoM fix it more properly than me ;)
//
// Revision 1.65  2001/04/18 22:53:55  hurdler
// Until SoM fix it more properly than me ;)
//
// Revision 1.64  2001/04/16 21:40:06  hurdler
// Fix misaligned midtexture problem (to verify!)
//
// Revision 1.63  2001/04/16 15:16:45  hurdler
// minor changes
//
// Revision 1.62  2001/04/09 23:26:05  hurdler
// clean up
//
// Revision 1.61  2001/04/09 20:24:28  metzgermeister
// turned it on again :)
//
// Revision 1.60  2001/04/09 14:18:21  hurdler
// no message
//
// Revision 1.59  2001/04/08 10:15:54  bpereira
// no message
//
// Revision 1.58  2001/04/03 23:15:39  hurdler
// FIXME: this code adds basic 3D-floors support in hw mode
//
// Revision 1.57  2001/03/25 18:11:24  metzgermeister
//   * SDL sound bug with swapped stereo channels fixed
//   * separate hw_trick.c now for HW_correctSWTrick(.)
//
// Revision 1.56  2001/03/20 21:26:21  hurdler
// use PI instead of M_PI as it  is defined in hw_defs.h (M_PI undefined under win32 by default)
//
// Revision 1.55  2001/03/19 21:18:48  metzgermeister
//   * missing textures in HW mode are replaced by default texture
//   * fixed crash bug with P_SpawnMissile(.) returning NULL
//   * deep water trick and other nasty thing work now in HW mode (tested with tnt/map02 eternal/map02)
//   * added cvar gr_correcttricks
//
// Revision 1.54  2001/03/19 18:15:59  hurdler
// fix a fog problem
//
// Revision 1.53  2001/03/13 22:14:21  stroggonmeth
// Long time no commit. 3D floors, FraggleScript, portals, ect.
//
// Revision 1.52  2001/02/24 13:35:22  bpereira
// no message
//
// Revision 1.51  2001/02/10 12:27:14  bpereira
// no message
//
// Revision 1.50  2001/01/31 17:15:09  hurdler
// Add cv_scalestatusbar in hardware mode
//
// Revision 1.49  2001/01/25 18:56:27  bpereira
// no message
//
// Revision 1.48  2000/11/18 15:51:25  bpereira
// no message
//
// Revision 1.47  2000/11/12 21:04:28  hurdler
// Fix a bug with validcount and boom code (dyn.light looked ugly with boom water)
//
// Revision 1.46  2000/11/11 13:59:47  bpereira
// no message
//
// Revision 1.45  2000/11/02 22:14:02  bpereira
// no message
//
// Revision 1.44  2000/11/02 21:54:26  bpereira
// no message
//
// Revision 1.43  2000/11/02 19:49:39  bpereira
// no message
//
// Revision 1.42  2000/10/22 14:16:41  hurdler
// Prepare code for TANDL
//
// Revision 1.41  2000/10/21 08:43:32  bpereira
// no message
//
// Revision 1.40  2000/10/04 16:21:57  hurdler
// small clean-up
//
// Revision 1.39  2000/10/02 18:25:46  bpereira
// no message
//
// Revision 1.38  2000/10/01 15:18:38  hurdler
// no message
//
// Revision 1.37  2000/10/01 10:18:23  bpereira
// no message
//
// Revision 1.36  2000/10/01 09:10:19  hurdler
// Put the md2 code in #ifdef TANDL
//
// Revision 1.35  2000/10/01 01:22:35  hurdler
// remove polysky, enable PF_Environment for sprites
//
// Revision 1.34  2000/09/28 20:57:20  bpereira
// no message
//
// Revision 1.33  2000/09/21 16:45:11  bpereira
// no message
//
// Revision 1.32  2000/08/31 14:30:57  bpereira
// no message
//
// Revision 1.31  2000/08/21 21:13:58  metzgermeister
// crash on polys>256verts fixed
//
// Revision 1.30  2000/08/11 19:11:57  metzgermeister
// *** empty log message ***
//
// Revision 1.29  2000/08/03 17:57:42  bpereira
// no message
//
// Revision 1.28  2000/07/01 09:23:50  bpereira
// no message
//
// Revision 1.27  2000/06/08 19:40:34  hurdler
// my changes before splitting (can be reverted in development branch)
//
// Revision 1.26  2000/05/30 18:03:22  kegetys
// Wall, floor and ceiling lighting is now done by changing only the RGB, not the alpha
//
// Revision 1.25  2000/05/10 17:45:35  kegetys
// no message
//
// Revision 1.24  2000/05/05 18:00:05  bpereira
// no message
//
// Revision 1.23  2000/04/30 10:30:10  bpereira
// no message
//
// Revision 1.22  2000/04/27 23:41:16  hurdler
// better splitscreen support in OpenGL mode
//
// Revision 1.21  2000/04/27 17:48:47  hurdler
// colormap code in hardware mode is now the default
//
// Revision 1.20  2000/04/24 20:24:38  bpereira
// no message
//
// Revision 1.19  2000/04/24 15:46:34  hurdler
// Support colormap for text
//
// Revision 1.18  2000/04/23 16:19:52  bpereira
// no message
//
// Revision 1.17  2000/04/23 12:50:32  hurdler
// support filter mode in OpenGL
//
// Revision 1.16  2000/04/22 21:08:23  hurdler
// I like it better like that
//
// Revision 1.15  2000/04/22 16:09:14  hurdler
// support skin color in hardware mode
//
// Revision 1.14  2000/04/18 16:07:16  hurdler
// better support of decals
//
// Revision 1.13  2000/04/18 12:52:21  hurdler
// join with Boris' code
//
// Revision 1.11  2000/04/14 16:34:26  hurdler
// some nice changes for coronas
//
// Revision 1.10  2000/04/12 16:03:51  hurdler
// ready for T&L code and true static lighting
//
// Revision 1.9  2000/04/09 01:59:06  hurdler
// removed warnings
//
// Revision 1.8  2000/04/08 11:28:46  hurdler
// added boom water support
//
// Revision 1.7  2000/03/29 19:39:49  bpereira
// no message
//
// Revision 1.6  2000/03/08 17:02:05  hurdler
// fix the joiningame problem under Linux
//
// Revision 1.5  2000/03/07 14:22:48  hurdler
// no message
//
// Revision 1.4  2000/03/06 16:52:06  hurdler
// hack for OpenGL / Open Entry problem
//
// Revision 1.3  2000/03/05 17:10:56  bpereira
// no message
//
// Revision 1.2  2000/02/27 00:42:11  hurdler
// fix CR+LF problem
//
// Revision 1.1.1.1  2000/02/22 20:32:33  hurdler
// Initial import into CVS (v1.29 pr3)
//
//
// DESCRIPTION:
//      hardware renderer, using the standard HardWareRender driver DLL for Doom Legacy
//
//-----------------------------------------------------------------------------

#include <math.h>

#include "hw_glob.h"
#include "hw_light.h"

#include "../doomstat.h"
#include "../i_video.h"  // added by Hurdler for rendermode == render_glide
#include "../v_video.h"
#include "../p_local.h"
#include "../p_setup.h"
#include "../r_local.h"
#include "../d_clisrv.h"
#include "../w_wad.h"
#include "../z_zone.h"
#include "../r_splats.h"

#define ZCLIP_PLANE     4.0f
#define R_FAKEFLOORS

// ==========================================================================
// the hardware driver object
// ==========================================================================
struct hwdriver_s hwdriver;

// ==========================================================================
//                                                                     PROTOS
// ==========================================================================


static  void    HWR_AddSprites (sector_t* sec );
static  void    HWR_ProjectSprite (mobj_t* thing );

static unsigned int atohex(char* s);


// ==========================================================================
//                                          3D ENGINE COMMANDS & CONSOLE VARS
// ==========================================================================

CV_PossibleValue_t grcrappymlook_cons_t[]= {{0,"Off"}, {1,"On"},{2,"Full"}, {0,NULL} };
CV_PossibleValue_t grgamma_cons_t[]= {{1,"MIN"}, {255,"MAX"}, {0,NULL} };
CV_PossibleValue_t grfiltermode_cons_t[]= {{HWD_SET_TEXTUREFILTER_POINTSAMPLED,"Nearest"},
                                           {HWD_SET_TEXTUREFILTER_BILINEAR,"Bilinear"},
                                           {HWD_SET_TEXTUREFILTER_TRILINEAR,"Trilinear"},
                                           {HWD_SET_TEXTUREFILTER_MIXED1,"Linear_Nearest"},
                                           {HWD_SET_TEXTUREFILTER_MIXED2,"Nearest_Linear"},
                                           {0,NULL} };


// BP: change directely the palette to see the change
void CV_Gammaxxx_ONChange(void)
{
    V_SetPalette( 0 );
}

void CV_filtermode_ONChange(void);
void CV_FogDensity_ONChange(void);
//static void CV_grFogColor_OnChange (void);
static void CV_grFov_OnChange (void);
//static void CV_grMonsterDL_OnChange (void);
static void CV_grPolygonSmooth_OnChange (void);


consvar_t cv_grrounddown       = {"gr_rounddown",       "Off", 0,       CV_OnOff };
consvar_t cv_grcrappymlook     = {"gr_mlook",          "Full", CV_SAVE, grcrappymlook_cons_t };
consvar_t cv_grfov             = {"gr_fov",              "90", CV_SAVE|CV_CALL, CV_Unsigned, CV_grFov_OnChange };
consvar_t cv_grsky             = {"gr_sky",              "On", 0,       CV_OnOff };
consvar_t cv_grfog             = {"gr_fog",              "On", CV_SAVE, CV_OnOff };
consvar_t cv_grfogcolor        = {"gr_fogcolor",     "000000", CV_SAVE, NULL };
consvar_t cv_grfogdensity      = {"gr_fogdensity",      "100", CV_SAVE|CV_CALL|CV_NOINIT, CV_Unsigned, CV_FogDensity_ONChange };
consvar_t cv_grgammared        = {"gr_gammared",        "127", CV_SAVE|CV_CALL, grgamma_cons_t, CV_Gammaxxx_ONChange };
consvar_t cv_grgammagreen      = {"gr_gammagreen",      "127", CV_SAVE|CV_CALL, grgamma_cons_t, CV_Gammaxxx_ONChange };
consvar_t cv_grgammablue       = {"gr_gammablue",       "127", CV_SAVE|CV_CALL, grgamma_cons_t, CV_Gammaxxx_ONChange };
consvar_t cv_grfiltermode      = {"gr_filtermode", "Bilinear", CV_SAVE|CV_CALL, grfiltermode_cons_t, CV_filtermode_ONChange };
consvar_t cv_grzbuffer         = {"gr_zbuffer",          "On", 0,       CV_OnOff };
consvar_t cv_grcorrecttricks   = {"gr_correcttricks",    "On", 0,       CV_OnOff };
consvar_t cv_grsolvetjoin      = {"gr_solvetjoin",       "On", 0,       CV_OnOff };

// console variables in development
consvar_t cv_grpolygonsmooth   = {"gr_polygonsmooth",   "Off", CV_CALL, CV_OnOff, CV_grPolygonSmooth_OnChange };
#ifdef TANDL
consvar_t cv_grmd2             = {"gr_md2",             "Off", CV_SAVE, CV_OnOff };
#endif

// faB : needs fix : walls are incorrectly clipped one column less
consvar_t cv_grclipwalls       = {"gr_clipwalls",       "Off", 0,       CV_OnOff };

//development variables for diverse uses
consvar_t cv_gralpha = {"gr_alpha","160", 0, CV_Unsigned };
consvar_t cv_grbeta  = {"gr_beta", "0",   0, CV_Unsigned };
consvar_t cv_grgamma = {"gr_gamma","0",   0, CV_Unsigned };

void CV_FogDensity_ONChange(void)
{
    HWD.pfnSetSpecialState( HWD_SET_FOG_DENSITY, cv_grfogdensity.value );
}

void CV_filtermode_ONChange(void)
{
    HWD.pfnSetSpecialState( HWD_SET_TEXTUREFILTERMODE, cv_grfiltermode.value);
}


// ==========================================================================
//                                                               VIEW GLOBALS
// ==========================================================================
// Fineangles in the SCREENWIDTH wide window.
#define FIELDOFVIEW      ANG90

angle_t                 gr_clipangle;

// The viewangletox[viewangle + FINEANGLES/4] lookup
// maps the visible view angles to screen X coordinates,
// flattening the arc to a flat projection plane.
// There will be many angles mapped to the same X.
int                     gr_viewangletox[FINEANGLES/2];

// The xtoviewangleangle[] table maps a screen pixel
// to the lowest viewangle that maps back to x ranges
// from clipangle to -clipangle.
angle_t                 gr_xtoviewangle[MAXVIDWIDTH+1];


// ==========================================================================
//                                                                    GLOBALS
// ==========================================================================

// uncomment to remove the plane rendering
#define DOPLANES
//#define DOWALLS

// BP: test of draw sky by polygone like in sofware with visplane, unfortunately
// this don't work since we must have z for pixel and z for texture (not like now with z=oow)
//#define POLYSKY

// BP: test change fov when looking up/down but bsp projection messup :(
//#define NOCRAPPYMLOOK


#define drawtextured  true
//static  boolean     drawtextured = false;

// base values set at SetViewSize
float       gr_basecentery;
float       gr_baseviewwindowy;
float       gr_basewindowcentery;

float       gr_viewwidth;           // viewport clipping boundaries (screen coords)
float       gr_viewheight;
float       gr_centerx;
float       gr_centery;
float       gr_viewwindowx;         // top left corner of view window
float       gr_viewwindowy;
float       gr_windowcenterx;       // center of view window, for projection
float       gr_windowcentery;

float       gr_pspritexscale;
float       gr_pspriteyscale;