1 /* 2 =========================================================================== 3 4 Doom 3 GPL Source Code 5 Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company. 6 7 This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code"). 8 9 Doom 3 Source Code is free software: you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation, either version 3 of the License, or 12 (at your option) any later version. 13 14 Doom 3 Source Code is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>. 21 22 In addition, the Doom 3 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 Source Code. If not, please request a copy in writing from id Software at the address below. 23 24 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. 25 26 =========================================================================== 27 */ 28 29 #ifndef __MODELDECAL_H__ 30 #define __MODELDECAL_H__ 31 32 #include "idlib/geometry/DrawVert.h" 33 #include "idlib/geometry/Winding.h" 34 35 /* 36 =============================================================================== 37 38 Decals are lightweight primitives for bullet / blood marks. 39 Decals with common materials will be merged together, but additional 40 decals will be allocated as needed. The material should not be 41 one that receives lighting, because no interactions are generated 42 for these lightweight surfaces. 43 44 FIXME: Decals on models in portalled off areas do not get freed 45 until the area becomes visible again. 46 47 =============================================================================== 48 */ 49 50 const int NUM_DECAL_BOUNDING_PLANES = 6; 51 52 typedef struct decalProjectionInfo_s { 53 idVec3 projectionOrigin; 54 idBounds projectionBounds; 55 idPlane boundingPlanes[6]; 56 idPlane fadePlanes[2]; 57 idPlane textureAxis[2]; 58 const idMaterial * material; 59 bool parallel; 60 float fadeDepth; 61 int startTime; 62 bool force; 63 } decalProjectionInfo_t; 64 65 66 class idRenderModelDecal { 67 public: 68 idRenderModelDecal( void ); 69 ~idRenderModelDecal( void ); 70 71 static idRenderModelDecal * Alloc( void ); 72 static void Free( idRenderModelDecal *decal ); 73 74 // Creates decal projection info. 75 static bool CreateProjectionInfo( decalProjectionInfo_t &info, const idFixedWinding &winding, const idVec3 &projectionOrigin, const bool parallel, const float fadeDepth, const idMaterial *material, const int startTime ); 76 77 // Transform the projection info from global space to local. 78 static void GlobalProjectionInfoToLocal( decalProjectionInfo_t &localInfo, const decalProjectionInfo_t &info, const idVec3 &origin, const idMat3 &axis ); 79 80 // Creates a deal on the given model. 81 void CreateDecal( const idRenderModel *model, const decalProjectionInfo_t &localInfo ); 82 83 // Remove decals that are completely faded away. 84 static idRenderModelDecal * RemoveFadedDecals( idRenderModelDecal *decals, int time ); 85 86 // Updates the vertex colors, removing any faded indexes, 87 // then copy the verts to temporary vertex cache and adds a drawSurf. 88 void AddDecalDrawSurf( struct viewEntity_s *space ); 89 90 // Returns the next decal in the chain. Next(void)91 idRenderModelDecal * Next( void ) const { return nextDecal; } 92 93 void ReadFromDemoFile( class idDemoFile *f ); 94 void WriteToDemoFile( class idDemoFile *f ) const; 95 96 private: 97 static const int MAX_DECAL_VERTS = 40; 98 static const int MAX_DECAL_INDEXES = 60; 99 100 const idMaterial * material; 101 srfTriangles_t tri; 102 idDrawVert verts[MAX_DECAL_VERTS]; 103 float vertDepthFade[MAX_DECAL_VERTS]; 104 glIndex_t indexes[MAX_DECAL_INDEXES]; 105 int indexStartTime[MAX_DECAL_INDEXES]; 106 idRenderModelDecal * nextDecal; 107 108 // Adds the winding triangles to the appropriate decal in the 109 // chain, creating a new one if necessary. 110 void AddWinding( const idWinding &w, const idMaterial *decalMaterial, const idPlane fadePlanes[2], float fadeDepth, int startTime ); 111 112 // Adds depth faded triangles for the winding to the appropriate 113 // decal in the chain, creating a new one if necessary. 114 // The part of the winding at the front side of both fade planes is not faded. 115 // The parts at the back sides of the fade planes are faded with the given depth. 116 void AddDepthFadedWinding( const idWinding &w, const idMaterial *decalMaterial, const idPlane fadePlanes[2], float fadeDepth, int startTime ); 117 }; 118 119 #endif /* !__MODELDECAL_H__ */ 120