/*
	gl_model_brush.c

	model loading and caching

	Copyright (C) 1996-1997  Id Software, Inc.

	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.

	You should have received a copy of the GNU General Public License
	along with this program; if not, write to:

		Free Software Foundation, Inc.
		59 Temple Place - Suite 330
		Boston, MA  02111-1307, USA

	$Id$
*/

// models are the only shared resource between a client and server running
// on the same machine.

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif

#include "compat.h"
#include "QF/console.h"
#include "QF/model.h"
#include "QF/qendian.h"
#include "QF/vfs.h"
#include "QF/GL/qf_textures.h"

int         Mod_Fullbright (byte * skin, int width, int height, char *name);

extern model_t *loadmodel;
extern char loadname[];

extern byte *mod_base;

const int   mod_lightmap_bytes = 3;

void
Mod_ProcessTexture (miptex_t *mt, texture_t *tx)
{
	char        name[32];

	snprintf (name, sizeof (name), "fb_%s", mt->name);
	tx->gl_fb_texturenum =
		Mod_Fullbright ((byte *) (tx + 1), tx->width, tx->height, name);
	tx->gl_texturenum =
		GL_LoadTexture (mt->name, tx->width, tx->height, (byte *) (tx + 1),
						true, false, 1);
}

/*
	Mod_LoadLighting
*/
void
Mod_LoadLighting (lump_t *l)
{
	int         i;
	byte       *in, *out, *data;
	byte        d;
	char        litfilename[1024];

	loadmodel->lightdata = NULL;
	// LordHavoc: check for a .lit file to load
	strcpy (litfilename, loadmodel->name);
	COM_StripExtension (litfilename, litfilename);
	strncat (litfilename, ".lit", sizeof (litfilename) - strlen (litfilename));
	data = (byte *) COM_LoadHunkFile (litfilename);
	if (data) {
		if (data[0] == 'Q' && data[1] == 'L' && data[2] == 'I'
			&& data[3] == 'T') {
			i = LittleLong (((int *) data)[1]);
			if (i == 1) {
				Con_DPrintf ("%s loaded", litfilename);
				loadmodel->lightdata = data + 8;
				return;
			} else
				Con_Printf ("Unknown .lit file version (%d)\n", i);
		} else
			Con_Printf ("Corrupt .lit file (old version?), ignoring\n");
	}
	// LordHavoc: oh well, expand the white lighting data
	if (!l->filelen)
		return;
	loadmodel->lightdata = Hunk_AllocName (l->filelen * 3, litfilename);
	in = loadmodel->lightdata + l->filelen * 2;	// place the file at the end, 
												// so it will not be
												// overwritten until the very 
												// last write
	out = loadmodel->lightdata;
	memcpy (in, mod_base + l->fileofs, l->filelen);
	for (i = 0; i < l->filelen; i++) {
		d = *in++;
		*out++ = d;
		*out++ = d;
		*out++ = d;
	}
}