/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").

Doom 3 BFG Edition Source Code 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 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/
#ifndef __PRELIGHTSHADOWVOLUME_H__
#define __PRELIGHTSHADOWVOLUME_H__

/*
================================================================================================

Pre-Light Shadow Volume Setup

A pre-light shadow is cast from static world geometry touching a static light.
A pre-light shadow volume does not extend to infinity but is capped at the light
boundaries which means the end caps always need to be rendered.

A pre-light shadow volume is created at map compile time and this job determines whether or
not the shadow volume needs to be rendered with Z-Fail.

================================================================================================
*/

/*
================================================
preLightShadowVolumeParms_t
================================================
*/
struct preLightShadowVolumeParms_t
{
	// input
	const idShadowVert* 			verts;					// streamed in from main memory
	int								numVerts;
	const triIndex_t* 				indexes;				// streamed in from main memory
	int								numIndexes;
	idBounds						triangleBounds;
	idRenderMatrix					triangleMVP;
	idVec3							localLightOrigin;
	idVec3							localViewOrigin;
	float							zNear;
	float							lightZMin;
	float							lightZMax;
	bool							forceShadowCaps;
	bool							useShadowPreciseInsideTest;
	bool							useShadowDepthBounds;
	// temp
	byte* 							tempCullBits;			// temp buffer in SPU local memory
	// output
	int* 							numShadowIndices;		// streamed out to main memory
	int* 							renderZFail;			// streamed out to main memory
	float* 							shadowZMin;				// streamed out to main memory
	float* 							shadowZMax;				// streamed out to main memory
	volatile shadowVolumeState_t* 	shadowVolumeState;		// streamed out to main memory
	// next in chain on view light
	preLightShadowVolumeParms_t* 	next;
	int								pad;
};


void PreLightShadowVolumeJob( const preLightShadowVolumeParms_t* parms );
void PreLightShadowVolume_SetupSPURSHeader( CellSpursJob128* job, const preLightShadowVolumeParms_t* parms );

#endif // !__PRELIGHTSHADOWVOLUME_H__