100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
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/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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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.
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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.
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===========================================================================
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*/
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class idTextureTile {
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public:
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int x, y;
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};
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static const int TILE_PER_LEVEL = 4;
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static const int MAX_MEGA_CHANNELS = 3; // normal, diffuse, specular
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static const int MAX_LEVELS = 12;
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static const int MAX_LEVEL_WIDTH = 512;
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static const int TILE_SIZE = MAX_LEVEL_WIDTH / TILE_PER_LEVEL;
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class idMegaTexture;
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class idTextureLevel {
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public:
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idMegaTexture *mega;
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int tileOffset;
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int tilesWide;
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int tilesHigh;
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idImage *image;
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idTextureTile tileMap[TILE_PER_LEVEL][TILE_PER_LEVEL];
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float parms[4];
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void UpdateForCenter( float center[2] );
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void UpdateTile( int localX, int localY, int globalX, int globalY );
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void Invalidate();
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};
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typedef struct {
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int tileSize;
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int tilesWide;
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int tilesHigh;
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} megaTextureHeader_t;
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class idMegaTexture {
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public:
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bool InitFromMegaFile( const char *fileBase );
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void SetMappingForSurface( const srfTriangles_t *tri ); // analyzes xyz and st to create a mapping
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void BindForViewOrigin( const idVec3 origin ); // binds images and sets program parameters
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void Unbind(); // removes texture bindings
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static void MakeMegaTexture_f( const idCmdArgs &args );
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private:
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friend class idTextureLevel;
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void SetViewOrigin( const idVec3 origin );
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static void GenerateMegaMipMaps( megaTextureHeader_t *header, idFile *file );
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static void GenerateMegaPreview( const char *fileName );
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idFile *fileHandle;
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const srfTriangles_t *currentTriMapping;
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idVec3 currentViewOrigin;
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float localViewToTextureCenter[2][4];
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int numLevels;
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idTextureLevel levels[MAX_LEVELS]; // 0 is the highest resolution
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megaTextureHeader_t header;
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static idCVar r_megaTextureLevel;
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static idCVar r_showMegaTexture;
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static idCVar r_showMegaTextureLabels;
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static idCVar r_skipMegaTexture;
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static idCVar r_terrainScale;
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};
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