mirror of
https://github.com/JGRennison/OpenTTD-patches.git
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5e413c9dcd
Only discard sprite zoom levels when a suitable higher zoom level is defined in the same colour mode This is to avoid placeholder or empty sprites being used, causing visual artefacts
72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD 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, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file spritecache.h Functions to cache sprites in memory. */
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#ifndef SPRITECACHE_H
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#define SPRITECACHE_H
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#include "gfx_type.h"
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#include "spriteloader/spriteloader.hpp"
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/** Data structure describing a sprite. */
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struct Sprite {
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uint16 height; ///< Height of the sprite.
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uint16 width; ///< Width of the sprite.
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int16 x_offs; ///< Number of pixels to shift the sprite to the right.
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int16 y_offs; ///< Number of pixels to shift the sprite downwards.
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byte data[]; ///< Sprite data.
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};
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enum SpriteCacheCtrlFlags {
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SCCF_ALLOW_ZOOM_MIN_1X_PAL = 0, ///< Allow use of sprite min zoom setting at 1x in palette mode.
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SCCF_ALLOW_ZOOM_MIN_1X_32BPP = 1, ///< Allow use of sprite min zoom setting at 1x in 32bpp mode.
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SCCF_ALLOW_ZOOM_MIN_2X_PAL = 2, ///< Allow use of sprite min zoom setting at 2x in palette mode.
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SCCF_ALLOW_ZOOM_MIN_2X_32BPP = 3, ///< Allow use of sprite min zoom setting at 2x in 32bpp mode.
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};
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extern uint _sprite_cache_size;
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typedef void *AllocatorProc(size_t size);
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void *SimpleSpriteAlloc(size_t size);
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void *GetRawSprite(SpriteID sprite, SpriteType type, AllocatorProc *allocator = nullptr, SpriteEncoder *encoder = nullptr);
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bool SpriteExists(SpriteID sprite);
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SpriteType GetSpriteType(SpriteID sprite);
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SpriteFile *GetOriginFile(SpriteID sprite);
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uint32 GetSpriteLocalID(SpriteID sprite);
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uint GetSpriteCountForFile(const std::string &filename, SpriteID begin, SpriteID end);
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uint GetMaxSpriteID();
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static inline const Sprite *GetSprite(SpriteID sprite, SpriteType type)
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{
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assert(type != ST_RECOLOUR);
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return (Sprite*)GetRawSprite(sprite, type);
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}
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static inline const byte *GetNonSprite(SpriteID sprite, SpriteType type)
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{
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assert(type == ST_RECOLOUR);
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return (byte*)GetRawSprite(sprite, type);
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}
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void GfxInitSpriteMem();
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void GfxClearSpriteCache();
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void IncreaseSpriteLRU();
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SpriteFile &OpenCachedSpriteFile(const std::string &filename, Subdirectory subdir, bool palette_remap);
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void ReadGRFSpriteOffsets(SpriteFile &file);
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size_t GetGRFSpriteOffset(uint32 id);
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bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id);
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bool SkipSpriteData(SpriteFile &file, byte type, uint16 num);
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void DupSprite(SpriteID old_spr, SpriteID new_spr);
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#endif /* SPRITECACHE_H */
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