r_lightmap.h

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/*
All original material Copyright (C) 2002-2022 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.
 
*/
 
#pragma once
 
#include "r_entity.h"
 
#define LIGHTMAP_DEFAULT_PAGE_SIZE 1024
#define LIGHTMAP_MAX_PAGE_SIZE 4096
 
#define LIGHTMAP_SAMPLE_SIZE 3 /* RGB */
#define DELUXEMAP_SAMPLE_SIZE 3 /* XYZ */
 
void R_CreateSurfaceLightmap(mBspSurface_t* surf);
void R_EndBuildingLightmaps(void);
void R_BeginBuildingLightmaps(void);
 
void R_Trace(const Line& trLine, float size, int contentmask);
 
typedef struct lightmaps_s {
    GLuint lightmap_texnums[MAX_GL_LIGHTMAPS];
    GLuint deluxemap_texnums[MAX_GL_DELUXEMAPS];
 
    int lightmap_count;
    int deluxemap_count;
 
    bool incomplete_atlas;
 
    int size;               
    unsigned* allocated;    
    byte* sample_buffer;    
    byte* direction_buffer; 
} lightmaps_t;
 
extern lightmaps_t r_lightmaps;