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/* $Id$ */
/*
* 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 viewport_sprite_sorter.h Types related to sprite sorting. */
#include "stdafx.h"
#include "core/smallvec_type.hpp"
#include "gfx_type.h"
#ifndef VIEWPORT_SPRITE_SORTER_H
#define VIEWPORT_SPRITE_SORTER_H
/** Parent sprite that should be drawn */
struct ParentSpriteToDraw {
/* Block of 16B loadable in xmm register */
int32 xmin; ///< minimal world X coordinate of bounding box
int32 ymin; ///< minimal world Y coordinate of bounding box
int32 zmin; ///< minimal world Z coordinate of bounding box
int32 x; ///< screen X coordinate of sprite
/* Second block of 16B loadable in xmm register */
int32 xmax; ///< maximal world X coordinate of bounding box
int32 ymax; ///< maximal world Y coordinate of bounding box
int32 zmax; ///< maximal world Z coordinate of bounding box
int32 y; ///< screen Y coordinate of sprite
SpriteID image; ///< sprite to draw
PaletteID pal; ///< palette to use
const SubSprite *sub; ///< only draw a rectangular part of the sprite
int32 left; ///< minimal screen X coordinate of sprite (= x + sprite->x_offs), reference point for child sprites
int32 top; ///< minimal screen Y coordinate of sprite (= y + sprite->y_offs), reference point for child sprites
int32 first_child; ///< the first child to draw.
bool comparison_done; ///< Used during sprite sorting: true if sprite has been compared with all other sprites
};
typedef SmallVector<ParentSpriteToDraw*, 64> ParentSpriteToSortVector;
/** Type for method for checking whether a viewport sprite sorter exists. */
typedef bool (*VpSorterChecker)();
/** Type for the actual viewport sprite sorter. */
typedef void (*VpSpriteSorter)(ParentSpriteToSortVector *psd);
#ifdef WITH_SSE
bool ViewportSortParentSpritesSSE41Checker();
void ViewportSortParentSpritesSSE41(ParentSpriteToSortVector *psdv);
#endif
void InitializeSpriteSorter();
#endif /* VIEWPORT_SPRITE_SORTER_H */
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