| 1 | /****************************************************************************** |
| 2 | * Arachnoid Graphics Plugin for Mupen64Plus |
| 3 | * http://bitbucket.org/wahrhaft/mupen64plus-video-arachnoid/ |
| 4 | * |
| 5 | * Copyright (C) 2007 Kristofer Karlsson, Rickard Niklasson |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version 2 |
| 10 | * of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | *****************************************************************************/ |
| 21 | |
| 22 | #ifndef TEXTURE_CACHE_H_ |
| 23 | #define TEXTURE_CACHE_H_ |
| 24 | |
| 25 | #include "CachedTexture.h" |
| 26 | #include "CRCCalculator2.h" |
| 27 | #include "ImageFormatSelector.h" |
| 28 | #include <list> |
| 29 | |
| 30 | //Forward declarations |
| 31 | class Memory; |
| 32 | class RSP; |
| 33 | class RDP; |
| 34 | |
| 35 | //***************************************************************************** |
| 36 | //* Texture Cache |
| 37 | //! Class used to activate textures and store used textures for reuse. |
| 38 | //! @details Nintendo64 has a texture cache of 4 KiB |
| 39 | //***************************************************************************** |
| 40 | class TextureCache |
| 41 | { |
| 42 | public: |
| 43 | |
| 44 | //Constructor / Destructor |
| 45 | TextureCache(); |
| 46 | ~TextureCache(); |
| 47 | |
| 48 | //Functions |
| 49 | bool initialize(RSP* rsp, RDP* rdp, Memory* memory, unsigned int textureBitDepth, unsigned int cacheSize=(32 * 1048576)); |
| 50 | void update(unsigned int tile); |
| 51 | void dispose(); |
| 52 | |
| 53 | void setMipmap( int value ) { m_mipmap = value; } |
| 54 | |
| 55 | //Add and Remove |
| 56 | CachedTexture* addTop(); |
| 57 | void removeBottom(); |
| 58 | void remove( CachedTexture *texture ); |
| 59 | |
| 60 | //Move Texture to top |
| 61 | void moveToTop( CachedTexture *newtop ); |
| 62 | |
| 63 | //Get Current Texture |
| 64 | CachedTexture* getCurrentTexture(int index) { return m_currentTextures[index]; } |
| 65 | |
| 66 | private: |
| 67 | |
| 68 | void _loadTexture(CachedTexture* texture); |
| 69 | void _calculateTextureSize(unsigned int tile, CachedTexture* out, unsigned int& maskWidth, unsigned int& maskHeight); |
| 70 | void _activateTexture( unsigned int t, CachedTexture *texture ); |
| 71 | unsigned int _calculateCRC(unsigned int t, unsigned int width, unsigned int height); |
| 72 | |
| 73 | private: |
| 74 | //public: |
| 75 | |
| 76 | RSP* m_rsp; //!< Pointer to Reality Signal Processor |
| 77 | RDP* m_rdp; //!< Pointer to Reality Drawing Processor |
| 78 | Memory* m_memory; //!< Pointer to Memory manager (handles RDRAM, Texture Memory...) |
| 79 | |
| 80 | ImageFormatSelector m_formatSelector; //!< Image Format Selector used when decoding textures |
| 81 | CRCCalculator2 m_crcCalculator; //!< Hash value calculator for textures |
| 82 | |
| 83 | unsigned int m_maxBytes; //!< Maximum number of bytes this cache have |
| 84 | unsigned int m_cachedBytes; //!< Current number of bytes in cache |
| 85 | unsigned int m_bitDepth; //!< |
| 86 | int m_mipmap; |
| 87 | |
| 88 | //Cached textures |
| 89 | typedef std::list<CachedTexture*> TextureList; |
| 90 | TextureList m_cachedTextures; //!< List of cached textures |
| 91 | |
| 92 | //Pointers to current textures |
| 93 | CachedTexture* m_currentTextures[2]; //!< Two textures for multi-texturing. |
| 94 | |
| 95 | }; |
| 96 | |
| 97 | #endif |