a484a5eb77
Extend bb sprite south for comparisons, but only for vehicles underneath This is to avoid creating sprite sorting problems for vehicles on top of the bridge Adjust ParentSpriteToDraw struct
108 lines
4.2 KiB
C++
108 lines
4.2 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 viewport_sprite_sorter.h Types related to sprite sorting. */
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#ifndef VIEWPORT_SPRITE_SORTER_H
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#define VIEWPORT_SPRITE_SORTER_H
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#include "core/bitmath_func.hpp"
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#include "gfx_type.h"
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#include <vector>
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/** Parent sprite that should be drawn */
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#ifdef _MSC_VER
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struct __declspec(align(16)) ParentSpriteToDraw {
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#else
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struct __attribute__ ((aligned (16))) ParentSpriteToDraw {
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#endif
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/* Block of 16B loadable in xmm register */
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int32_t xmin; ///< minimal world X coordinate of bounding box
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int32_t ymin; ///< minimal world Y coordinate of bounding box
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int32_t zmin; ///< minimal world Z coordinate of bounding box
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int32_t x; ///< screen X coordinate of sprite
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/* Second block of 16B loadable in xmm register */
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int32_t xmax; ///< maximal world X coordinate of bounding box
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int32_t ymax; ///< maximal world Y coordinate of bounding box
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int32_t zmax; ///< maximal world Z coordinate of bounding box
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int32_t y; ///< screen Y coordinate of sprite
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SpriteID image; ///< sprite to draw
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PaletteID pal; ///< palette to use
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#ifdef POINTER_IS_64BIT
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int32_t sub_idx; ///< only draw a rectangular part of the sprite (store the actual pointer elsewhere to save space in this struct)
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#else
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const SubSprite *sub_ptr; ///< only draw a rectangular part of the sprite
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#endif
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uint8_t special_flags; ///< special flags
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/* 3 bytes spare! */
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int32_t left; ///< minimal screen X coordinate of sprite (= x + sprite->x_offs), reference point for child sprites
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int32_t top; ///< minimal screen Y coordinate of sprite (= y + sprite->y_offs), reference point for child sprites
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int32_t first_child; ///< the first child to draw.
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uint16_t width; ///< sprite width
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uint16_t height; ///< sprite height, bit 15: comparison_done: used during sprite sorting: true if sprite has been compared with all other sprites
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bool IsComparisonDone() const { return HasBit(this->height, 15); }
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void SetComparisonDone(bool done) { SB(this->height, 15, 1, done ? 1 : 0); }
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};
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static_assert((sizeof(ParentSpriteToDraw) % 16) == 0);
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static_assert(sizeof(ParentSpriteToDraw) <= 64);
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typedef std::vector<ParentSpriteToDraw*> ParentSpriteToSortVector;
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#ifdef POINTER_IS_64BIT
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struct ParentSpriteToDrawSubSpriteHolder {
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std::vector<const SubSprite *> subsprites;
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const SubSprite *Get(const ParentSpriteToDraw *ps) const
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{
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return ps->sub_idx >= 0 ? this->subsprites[ps->sub_idx] : nullptr;
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}
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void Set(ParentSpriteToDraw *ps, const SubSprite *sub)
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{
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if (sub == nullptr) {
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ps->sub_idx = -1;
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} else {
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ps->sub_idx = (int32_t)this->subsprites.size();
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this->subsprites.push_back(sub);
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}
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}
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void Clear()
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{
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this->subsprites.clear();
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}
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};
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#else
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struct ParentSpriteToDrawSubSpriteHolder {
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const SubSprite *Get(const ParentSpriteToDraw *ps) const { return ps->sub_ptr; }
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void Set(ParentSpriteToDraw *ps, const SubSprite *sub) { ps->sub_ptr = sub; }
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void Clear() {}
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};
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#endif
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/** Type for method for checking whether a viewport sprite sorter exists. */
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typedef bool (*VpSorterChecker)();
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/** Type for the actual viewport sprite sorter. */
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typedef void (*VpSpriteSorter)(ParentSpriteToSortVector *psd);
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bool ViewportSortParentSpritesSpecial(ParentSpriteToDraw *ps, ParentSpriteToDraw *ps2, ParentSpriteToDraw **psd, ParentSpriteToDraw **psd2);
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#ifdef WITH_SSE
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bool ViewportSortParentSpritesSSE41Checker();
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void ViewportSortParentSpritesSSE41(ParentSpriteToSortVector *psdv);
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#endif
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void InitializeSpriteSorter();
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#endif /* VIEWPORT_SPRITE_SORTER_H */
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