mirror of https://github.com/OpenTTD/OpenTTD.git
81 lines
3.4 KiB
C++
81 lines
3.4 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 32bpp_anim.hpp A 32 bpp blitter with animation support. */
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#ifndef BLITTER_32BPP_ANIM_HPP
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#define BLITTER_32BPP_ANIM_HPP
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#include "32bpp_optimized.hpp"
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/** The optimised 32 bpp blitter with palette animation. */
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class Blitter_32bppAnim : public Blitter_32bppOptimized {
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protected:
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uint16_t *anim_buf; ///< In this buffer we keep track of the 8bpp indexes so we can do palette animation
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void *anim_alloc; ///< The raw allocated buffer, not necessarily aligned correctly
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int anim_buf_width; ///< The width of the animation buffer.
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int anim_buf_height; ///< The height of the animation buffer.
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int anim_buf_pitch; ///< The pitch of the animation buffer (width rounded up to 16 byte boundary).
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Palette palette; ///< The current palette.
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public:
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Blitter_32bppAnim() :
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anim_buf(nullptr),
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anim_alloc(nullptr),
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anim_buf_width(0),
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anim_buf_height(0),
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anim_buf_pitch(0)
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{
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this->palette = _cur_palette;
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}
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~Blitter_32bppAnim();
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void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
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void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) override;
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void SetPixel(void *video, int x, int y, uint8_t colour) override;
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void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8_t colour, int width, int dash) override;
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void DrawRect(void *video, int width, int height, uint8_t colour) override;
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void CopyFromBuffer(void *video, const void *src, int width, int height) override;
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void CopyToBuffer(const void *video, void *dst, int width, int height) override;
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void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override;
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size_t BufferSize(uint width, uint height) override;
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void PaletteAnimate(const Palette &palette) override;
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Blitter::PaletteAnimation UsePaletteAnimation() override;
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std::string_view GetName() override { return "32bpp-anim"; }
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void PostResize() override;
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/**
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* Look up the colour in the current palette.
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*/
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inline Colour LookupColourInPalette(uint index)
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{
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return this->palette.palette[index];
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}
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inline int ScreenToAnimOffset(const uint32_t *video)
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{
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int raw_offset = video - (const uint32_t *)_screen.dst_ptr;
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if (_screen.pitch == this->anim_buf_pitch) return raw_offset;
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int lines = raw_offset / _screen.pitch;
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int across = raw_offset % _screen.pitch;
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return across + (lines * this->anim_buf_pitch);
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}
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template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
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};
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/** Factory for the 32bpp blitter with animation. */
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class FBlitter_32bppAnim : public BlitterFactory {
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public:
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FBlitter_32bppAnim() : BlitterFactory("32bpp-anim", "32bpp Animation Blitter (palette animation)") {}
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Blitter *CreateInstance() override { return new Blitter_32bppAnim(); }
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};
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#endif /* BLITTER_32BPP_ANIM_HPP */
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