/*
Copyright (C) 2002-2007 Victor Luchits

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_SHADOW_H__
#define __R_SHADOW_H__

typedef struct shadowGroup_s
{
	uint			bit;
	texture_t			*depthTexture;

	vec3_t			origin;
	byte			*vis;

	float			projDist;
	vec3_t			mins, maxs;

	matrix4x4			worldviewProjectionMatrix;
	struct shadowGroup_s	*hashNext;
} shadowGroup_t;

extern int r_numShadowGroups;
extern shadowGroup_t r_shadowGroups[MAX_SHADOWGROUPS];
extern int r_entShadowBits[MAX_ENTITIES];

void		R_InitShadows( void );
void		R_ShutdownShadows( void );

bool		R_CullPlanarShadow( struct ref_entity_s *e, vec3_t mins, vec3_t maxs, bool occclusionQuery );
void		R_DeformVPlanarShadow( int numV, float *v );
void		R_PlanarShadowPass( int state );
ref_shader_t	*R_PlanarShadowShader( void );

void		R_ClearShadowmaps( void );
void		R_GroupShadowCasters( void );
bool		R_AddShadowCaster( struct ref_entity_s *ent );
void		R_CullShadowmapGroups( void );
void		R_DrawShadowmaps( void );

#endif /*__R_SHADOW_H__*/