src/viewport_sprite_sorter.h

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * 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.
   6  * 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.
   7  * 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/>.
   8  */
   9
  10 /** @file viewport_sprite_sorter.h Types related to sprite sorting. */
  11
  12 #include "stdafx.h"
  13 #include "core/smallvec_type.hpp"
  14 #include "gfx_type.h"
  15
  16 #ifndef VIEWPORT_SPRITE_SORTER_H
  17 #define VIEWPORT_SPRITE_SORTER_H
  18
  19 /** Parent sprite that should be drawn */
  20 struct ParentSpriteToDraw {
  21         /* Block of 16B loadable in xmm register */
  22         int32 xmin;                     ///< minimal world X coordinate of bounding box
  23         int32 ymin;                     ///< minimal world Y coordinate of bounding box
  24         int32 zmin;                     ///< minimal world Z coordinate of bounding box
  25         int32 x;                        ///< screen X coordinate of sprite
  26
  27         /* Second block of 16B loadable in xmm register */
  28         int32 xmax;                     ///< maximal world X coordinate of bounding box
  29         int32 ymax;                     ///< maximal world Y coordinate of bounding box
  30         int32 zmax;                     ///< maximal world Z coordinate of bounding box
  31         int32 y;                        ///< screen Y coordinate of sprite
  32
  33         SpriteID image;                 ///< sprite to draw
  34         PaletteID pal;                  ///< palette to use
  35         const SubSprite *sub;           ///< only draw a rectangular part of the sprite
  36
  37         int32 left;                     ///< minimal screen X coordinate of sprite (= x + sprite->x_offs), reference point for child sprites
  38         int32 top;                      ///< minimal screen Y coordinate of sprite (= y + sprite->y_offs), reference point for child sprites
  39
  40         int32 first_child;              ///< the first child to draw.
  41         bool comparison_done;           ///< Used during sprite sorting: true if sprite has been compared with all other sprites
  42 };
  43
  44 typedef SmallVector<ParentSpriteToDraw*, 64> ParentSpriteToSortVector;
  45
  46 /** Type for method for checking whether a viewport sprite sorter exists. */
  47 typedef bool (*VpSorterChecker)();
  48 /** Type for the actual viewport sprite sorter. */
  49 typedef void (*VpSpriteSorter)(ParentSpriteToSortVector *psd);
  50
  51 #ifdef WITH_SSE
  52 bool ViewportSortParentSpritesSSE41Checker();
  53 void ViewportSortParentSpritesSSE41(ParentSpriteToSortVector *psdv);
  54 #endif
  55
  56 void InitializeSpriteSorter();
  57
  58 #endif /* VIEWPORT_SPRITE_SORTER_H */