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hammer/bsplighting.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef BSPLIGHTING_H
+#define BSPLIGHTING_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "stdafx.h"
+#include "ibsplighting.h"
+#include "utlvector.h"
+#include "utllinkedlist.h"
+#include "bspfile.h"
+#include "interface.h"
+#include "ivraddll.h"
+#include "ibsplightingthread.h"
+
+
+class CBSPLighting : public IBSPLighting
+{
+public:
+
+							CBSPLighting();
+	virtual					~CBSPLighting();
+	virtual void			Release();
+
+	virtual bool			Load( char const *pFilename );	
+	virtual void			Term();
+	virtual bool			Serialize();
+	virtual void			StartLighting( char const *pVMFFileWithEnts );
+	virtual float			GetPercentComplete();
+	virtual void			Interrupt();
+	virtual bool			CheckForNewLightmaps();
+	virtual void			Draw();
+
+
+private:
+	class CVert
+	{
+	public:
+		Vector		m_vPos;
+		Vector2D	m_vTexCoords;
+		Vector2D	m_vLightCoords;
+	};
+
+	// This is the face data we store for each face. Just enough to
+	// let us update the lightmaps in memory.
+	class CFaceMaterial;
+	class CFace;
+	class CStoredFace
+	{
+	public:
+		int				m_iMapFace;			// index into dfaces.
+		int				m_LightmapPageID;
+		int				m_OffsetIntoLightmapPage[2];
+		int				m_LightmapSize[2];	// This already has 1 added to it (unlike dface).
+		CFaceMaterial	*m_pMaterial;
+		CFace			*m_pFace; // only valid inside of Load
+		float			m_BumpSTexCoordOffset;
+
+		// Indices into CFaceMaterial::m_pMesh
+		int				m_iFirstIndex;
+		int				m_nIndices;
+	};
+
+	class CDrawCommand
+	{
+	public:
+		CUtlVector<CPrimList>	m_PrimLists;
+		int						m_LightmapPageID;
+	};
+
+	friend bool FindDrawCommand( CUtlVector<CDrawCommand*> &drawCommands, int lmPageID, int &index );
+
+	class CMaterialBuf
+	{
+	public:
+				CMaterialBuf();
+				~CMaterialBuf();
+
+		CUtlLinkedList<CStoredFace*, unsigned short> m_Faces;
+
+		// Commands to draw everything in this material as fast as possible.
+		CUtlVector<CDrawCommand*>		m_DrawCommands;
+		
+		int		m_nVerts;
+		int		m_nIndices;
+
+		IMesh	*m_pMesh;
+	};
+
+
+	class CFaceMaterial
+	{
+	public:
+										~CFaceMaterial();
+
+		IMaterial						*m_pMaterial;
+	
+		// Faces using this material.
+		CUtlLinkedList<CStoredFace*, unsigned short>	m_Faces;
+
+		// Static buffers to hold all the verts.
+		CUtlLinkedList<CMaterialBuf*, unsigned short>	m_MaterialBufs;
+	};
+
+	class CFace
+	{
+	public:
+		
+		int		m_iDispInfo;
+		dface_t	*m_pDFace;	// used while loading..
+
+		CStoredFace	*m_pStoredFace;
+		int		m_LightmapSortID;
+		
+		float	m_LightmapVecs[2][4];
+		int		m_LightmapTextureMinsInLuxels[2];
+
+		int		m_iVertStart;	// Indexes CBSPLighting::m_Verts.
+		int		m_nVerts;
+	};
+
+	class CDispInfoFaces
+	{
+	public:
+		CUtlVector<CVert>			m_Verts;
+		int							m_Power;
+	};
+
+private:
+
+	void					AssignFaceMaterialCounts(
+		CBSPInfo &file,
+		CUtlVector<CFace> &faces );
+
+	VertexFormat_t			ComputeLMGroupVertexFormat( IMaterial * pMaterial );
+
+	void					BuildLMGroups(
+		CBSPInfo &file,
+		CUtlVector<CFace> &faces,
+		CUtlVector<CVert> &verts,
+		CUtlVector<CDispInfoFaces> &dispInfos
+		);
+
+	void					BuildDrawCommands();
+
+	void					ReloadLightmaps();
+	bool					LoadVRADDLL( char const *pFilename );
+	void					CreateDisplacements( CBSPInfo &file, CUtlVector<CFace> &faces, CUtlVector<CDispInfoFaces> &dispInfos );
+	
+	// Fast material ID to CFaceMaterial lookups..
+	void					InitMaterialLUT( CBSPInfo &file );
+	CFaceMaterial*			FindOrAddMaterial( CBSPInfo &file, int stringTableID );
+
+
+private:
+	CUtlVector<CStoredFace>			m_StoredFaces;
+	CUtlLinkedList<CFaceMaterial*, unsigned short> m_FaceMaterials;
+
+	int								m_nTotalTris;
+
+	// The VRAD DLL. This holds the level file.
+	CSysModule						*m_hVRadDLL;
+	IVRadDLL						*m_pVRadDLL;
+
+	// The lighting thread.
+	IBSPLightingThread				*m_pBSPLightingThread;
+
+	// Used to detect when lighting is finished so it can update the lightmaps
+	// in the material system.
+	bool							m_bLightingInProgress;
+
+	// Maps string table IDs to materials.
+	CUtlVector<CFaceMaterial*>		m_StringTableIDToMaterial;
+};
+
+
+
+#endif // BSPLIGHTING_H