r_lightmap.h

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/*
All original material Copyright (C) 2002-2010 UFO: Alien Invasion.

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

*/

#ifndef R_LIGHTMAP_H
#define R_LIGHTMAP_H

#include "r_entity.h"

#define LIGHTMAP_BLOCK_WIDTH    4096
#define LIGHTMAP_BLOCK_HEIGHT   4096
#define LIGHTMAP_BLOCK_BYTES    3 /* bytes RGB */
#define DELUXEMAP_BLOCK_BYTES   3 /* bytes RGB */

#define LIGHTMAP_BYTES          3 /* RGB */

void R_BlendLightmaps(const model_t* mod);
void R_CreateSurfaceLightmap(mBspSurface_t * surf);
void R_EndBuildingLightmaps(void);
void R_BeginBuildingLightmaps(void);

void R_Trace(vec3_t start, vec3_t end, float size, int contentmask);

#define LIGHTMAP_FBUFFER_SIZE \
    (MAX_MAP_LIGHTMAP * LIGHTMAP_BYTES)

typedef struct lightmaps_s {
    GLuint lightmap_texnum;
    GLuint deluxemap_texnum;

    int size;  
    unsigned *allocated; 
    byte *sample_buffer; 
    byte *direction_buffer;
    float fbuffer[LIGHTMAP_FBUFFER_SIZE]; 
} lightmaps_t;

extern lightmaps_t r_lightmaps;

#endif