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Documentation                       Search   patchdlm_context.h Go to the documentation of this file. /* Copyright, 2000-2002 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL 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, or (at your option) * any later version. * NEVRAX NEL 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 NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #ifndef NL_PATCHDLM_CONTEXT_H #define NL_PATCHDLM_CONTEXT_H #include "nel/misc/types_nl.h" #include "nel/misc/object_vector.h" #include "3d/tess_list.h" #include "nel/misc/bsphere.h" #include "nel/misc/aabbox.h" #include "nel/misc/rgba.h" #include "3d/landscape_def.h" namespace NL3D { class CPatch; class CTextureDLM; class CPointLight; class CPatchDLMContextList; // *************************************************************************** class CPatchDLMPointLight { public: // Diffuse Color of the Spot, pre-modulated with landscape PointLightDiffuseMaterial. 0..255 float R, G, B; // Is this a spot? NB: if false, cosMin/cosMax are still well computed for correctLighting (cosMax=-1, cosMin= -2). bool IsSpot; // World Position of the spot CVector Pos; // Direction of the spot, normalized CVector Dir; // cosMax, where influence==1. float CosMax; // cosMin, where influence==0. NB: cosMax>cosMin (ie angleMax<angleMin) float CosMin; // 1.f / (cosMax-cosMin); float OOCosDelta; // Attenuation distance, where influence==0. float AttMax; // Attenuation distance, where influence==1. NB: attMax>attMin float AttMin; // 1.f / (attMin-attMax); float OOAttDelta; // The estimated sphere which englobe the light. NB: approximated for SpotLight NLMISC::CBSphere BSphere; // The BBox which englobe the light. NB: Sphere and Box are best fit to the light, ie bbox may not // englobe the sphere and vice versa NLMISC::CAABBox BBox; public: // compile from a pointlight. NB: attenuation end is clamped to maxAttEnd (must be >0) void compile(const CPointLight &pl, NLMISC::CRGBA landDiffMat, float maxAttEnd= 30.f); }; // *************************************************************************** class CPatchDLMContext : public CTessNodeList { public: struct CVertex { CVector Pos; CVector Normal; }; enum TCompileType {ModulateTileColor=0, ModulateTextureFar, ModulateConstant, NoModulate}; public: uint TextPosX, TextPosY, Width, Height; float DLMUScale, DLMVScale, DLMUBias, DLMVBias; uint8 MinU8, MaxU8; uint8 MinV8, MaxV8; uint OldPointLightCount; uint CurPointLightCount; public: CPatchDLMContext(); ~CPatchDLMContext(); bool generate(CPatch *patch, CTextureDLM *textureDLM, CPatchDLMContextList *ctxList); void clearLighting(); void addPointLightInfluence(const CPatchDLMPointLight &pl); void compileLighting(TCompileType compType, NLMISC::CRGBA modulateCte= NLMISC::CRGBA::White); CPatch *getPatch() const {return _Patch;} // For Bench. Get the size in memory this class use. uint getMemorySize() const; // ************************* private: CPatch *_Patch; CTextureDLM *_DLMTexture; // The ctx list where this context is appened. CPatchDLMContextList *_DLMContextList; NLMISC::CObjectVector<CVertex> _Vertices; NLMISC::CObjectVector<CRGBA> _LightMap; struct CCluster { // The bounding sphere of the cluster NLMISC::CBSphere BSphere; // If cluster not clipped, how many cluster to skip. NB: if NSkips==0, then it is a leaf cluster. uint NSkips; // For leaf cluster: logical position of the cluster uint16 X, Y; }; NLMISC::CObjectVector<CCluster> _Clusters; // Tells if all _LightMap[] is all black. bool _IsSrcTextureFullBlack; // Tells if all dst texture in _DLMTexture is black. bool _IsDstTextureFullBlack; // If resolution of the lightmap is every 2x2 tiles, must bkup tileColors. #ifndef NL_DLM_TILE_RES // The tileColors at resolution of tessBlock NLMISC::CObjectVector<uint16, false> _LowResTileColors; #endif NLMISC::CObjectVector<CRGBA> _TextureFar; private: // called at generate. void computeTextureFar(); // Tile at 2x2 resolution method static const CRGBA *computeTileFarSrcDeltas(sint nRot, bool is256x256, uint8 uvOff, const CRGBA *srcPixel, sint &srcDeltaX, sint &srcDeltaY); static void copyTileToTexture(const CRGBA *srcPixel, sint srcDeltaX, sint srcDeltaY, CRGBA *dstPixel, uint dstStride); static void blendTileToTexture(const CRGBA *srcPixel, sint srcDeltaX, sint srcDeltaY, CRGBA *dstPixel, uint dstStride); }; // *************************************************************************** class CPatchDLMContextList : public CTessList<CPatchDLMContext> { }; } // NL3D #endif // NL_PATCHDLM_CONTEXT_H /* End of patchdlm_context.h */