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Location: cpp/openttd-patchpack/source/src/spriteloader/spriteloader.hpp - annotation
r24860:fb2788d47d86
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Codechange: [OSX] Only keep a total dirty rect for drawing.
When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.
All other drivers only keep one overall dirty rect, so do it here as well.
When drawing an 8bpp screen buffer, palette resolving was done for each
dirty rectangle. In areas with high activity, this would mean a pixel might
have been resolved multiple times. Also, if too many individual updates
were queued, the whole screen would be refreshed, even if unnecessary.
All other drivers only keep one overall dirty rect, so do it here as well.
r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r12768:980ae0491352 r9111:983de9c5a848 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r11203:4e233b1fc54b r14248:a9050881acd7 r11203:4e233b1fc54b r17625:366001a31c88 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r17625:366001a31c88 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r11202:ec3713bd39fb r11202:ec3713bd39fb r11202:ec3713bd39fb r11202:ec3713bd39fb r11202:ec3713bd39fb r11202:ec3713bd39fb r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r18461:b013cc5efff8 r6852:5b6b567a9e32 r11202:ec3713bd39fb r11202:ec3713bd39fb r11202:ec3713bd39fb r19022:c323225b1609 r11202:ec3713bd39fb r11202:ec3713bd39fb r19022:c323225b1609 r11202:ec3713bd39fb r11202:ec3713bd39fb r19022:c323225b1609 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r19022:c323225b1609 r17138:5078c9240593 r17138:5078c9240593 r17138:5078c9240593 r19030:677375fa2cd6 r19022:c323225b1609 r6852:5b6b567a9e32 r19030:677375fa2cd6 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 r6852:5b6b567a9e32 | /*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file spriteloader.hpp Base for loading sprites. */
#ifndef SPRITELOADER_HPP
#define SPRITELOADER_HPP
#include "../core/alloc_type.hpp"
#include "../gfx_type.h"
/** Interface for the loader of our sprites. */
class SpriteLoader {
public:
/** Definition of a common pixel in OpenTTD's realm. */
struct CommonPixel {
uint8 r; ///< Red-channel
uint8 g; ///< Green-channel
uint8 b; ///< Blue-channel
uint8 a; ///< Alpha-channel
uint8 m; ///< Remap-channel
};
/**
* Structure for passing information from the sprite loader to the blitter.
* You can only use this struct once at a time when using AllocateData to
* allocate the memory as that will always return the same memory address.
* This to prevent thousands of malloc + frees just to load a sprite.
*/
struct Sprite {
uint16 height; ///< Height of the sprite
uint16 width; ///< Width of the sprite
int16 x_offs; ///< The x-offset of where the sprite will be drawn
int16 y_offs; ///< The y-offset of where the sprite will be drawn
SpriteType type; ///< The sprite type
SpriteLoader::CommonPixel *data; ///< The sprite itself
/**
* Allocate the sprite data of this sprite.
* @param zoom Zoom level to allocate the data for.
* @param size the minimum size of the data field.
*/
void AllocateData(ZoomLevel zoom, size_t size) { this->data = Sprite::buffer[zoom].ZeroAllocate(size); }
private:
/** Allocated memory to pass sprite data around */
static ReusableBuffer<SpriteLoader::CommonPixel> buffer[ZOOM_LVL_COUNT];
};
/**
* Load a sprite from the disk and return a sprite struct which is the same for all loaders.
* @param[out] sprite The sprites to fill with data.
* @param file_slot The file "descriptor" of the file we read from.
* @param file_pos The position within the file the image begins.
* @param sprite_type The type of sprite we're trying to load.
* @param load_32bpp True if 32bpp sprites should be loaded, false for a 8bpp sprite.
* @return Bit mask of the zoom levels successfully loaded or 0 if no sprite could be loaded.
*/
virtual uint8 LoadSprite(SpriteLoader::Sprite *sprite, uint8 file_slot, size_t file_pos, SpriteType sprite_type, bool load_32bpp) = 0;
virtual ~SpriteLoader() { }
};
#endif /* SPRITELOADER_HPP */
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