/*
	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
#include <string.h>

#include "console.h"
#include "glquake.h"
#include "model.h"
#include "qendian.h"
#include "quakefs.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];

	texture_mode = GL_LINEAR_MIPMAP_NEAREST; //_LINEAR;
	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);
	texture_mode = GL_LINEAR;
}

/*
=================
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;
	}
}