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Documentation                       Search   texture_near.cpp Go to the documentation of this file. /* Copyright, 2000 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. */ #include "std3d.h" #include "3d/texture_near.h" using namespace NLMISC; namespace NL3D { // *************************************************************************** CTextureNear::CTextureNear(sint size) { nlassert(size>=NL_TILE_LIGHTMAP_SIZE); nlassert(NLMISC::isPowerOf2(size)); // The near texture always reside in memory... // NB: this is simplier like that, and this is not a problem, since only 1 or 2 Mo are allocated :o) setReleasable(false); // create the bitmap. CBitmap::resize(size, size, CBitmap::RGBA); // Format of texture, 32 bits and no mipmaps. setUploadFormat(ITexture::RGBA8888); setFilterMode(ITexture::Linear, ITexture::LinearMipMapOff); // Fill the array of free tiles. uint nbTilesByLine= size/NL_TILE_LIGHTMAP_SIZE; _FreeTiles.resize(nbTilesByLine*nbTilesByLine); _AvailableTiles.resize(nbTilesByLine*nbTilesByLine); for(sint i=0;i<(sint)_FreeTiles.size();i++) { // This tile is free!! _FreeTiles[i]=i; _AvailableTiles[i]= true; } } // *************************************************************************** sint CTextureNear::getNbAvailableTiles() { return _FreeTiles.size(); } // *************************************************************************** uint CTextureNear::getTileAndFillRect(CRGBA map[NL_TILE_LIGHTMAP_SIZE*NL_TILE_LIGHTMAP_SIZE]) { nlassert(getNbAvailableTiles()>0); uint id= _FreeTiles.back(); // This tile is now more free. _AvailableTiles[id]= false; _FreeTiles.pop_back(); // Fill the texture refillRect(id, map); return id; } // *************************************************************************** void CTextureNear::refillRect(uint id, CRGBA map[NL_TILE_LIGHTMAP_SIZE*NL_TILE_LIGHTMAP_SIZE]) { uint dstWidth= getWidth(); // Copy the map into the texture uint nbTilesByLine= dstWidth/NL_TILE_LIGHTMAP_SIZE; uint s= id% nbTilesByLine; uint t= id/ nbTilesByLine; s*= NL_TILE_LIGHTMAP_SIZE; t*= NL_TILE_LIGHTMAP_SIZE; CRGBA *src= map; CRGBA *dst= (CRGBA*)&(*getPixels().begin()); dst+= t*dstWidth+s; for(sint n= NL_TILE_LIGHTMAP_SIZE;n>0;n--, src+= NL_TILE_LIGHTMAP_SIZE, dst+= dstWidth) { memcpy(dst, src, NL_TILE_LIGHTMAP_SIZE*sizeof(CRGBA)); } // Invalidate the rectangle. ITexture::touchRect(CRect(s, t, NL_TILE_LIGHTMAP_SIZE, NL_TILE_LIGHTMAP_SIZE)); } // *************************************************************************** void CTextureNear::releaseTile(uint id) { nlassert(!_AvailableTiles[id]); // This tile is now free. _AvailableTiles[id]= true; // insert this tile at the end of the free list. _FreeTiles.push_back(id); } } // NL3D