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/*
* 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 32bpp_anim.hpp A 32 bpp blitter with animation support. */
#ifndef BLITTER_32BPP_ANIM_HPP
#define BLITTER_32BPP_ANIM_HPP
#include "32bpp_optimized.hpp"
/** The optimised 32 bpp blitter with palette animation. */
class Blitter_32bppAnim : public Blitter_32bppOptimized {
protected:
uint16 *anim_buf; ///< In this buffer we keep track of the 8bpp indexes so we can do palette animation
void *anim_alloc; ///< The raw allocated buffer, not necessarily aligned correctly
int anim_buf_width; ///< The width of the animation buffer.
int anim_buf_height; ///< The height of the animation buffer.
int anim_buf_pitch; ///< The pitch of the animation buffer (width rounded up to 16 byte boundary).
Palette palette; ///< The current palette.
public:
Blitter_32bppAnim() :
anim_buf(nullptr),
anim_alloc(nullptr),
anim_buf_width(0),
anim_buf_height(0),
anim_buf_pitch(0)
{
this->palette = _cur_palette;
}
~Blitter_32bppAnim();
void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override;
void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) override;
void SetPixel(void *video, int x, int y, uint8 colour) override;
void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override;
void DrawRect(void *video, int width, int height, uint8 colour) override;
void CopyFromBuffer(void *video, const void *src, int width, int height) override;
void CopyToBuffer(const void *video, void *dst, int width, int height) override;
void ScrollBuffer(void *video, int &left, int &top, int &width, int &height, int scroll_x, int scroll_y) override;
int BufferSize(int width, int height) override;
void PaletteAnimate(const Palette &palette) override;
Blitter::PaletteAnimation UsePaletteAnimation() override;
const char *GetName() override { return "32bpp-anim"; }
int GetBytesPerPixel() override { return 6; }
void PostResize() override;
/**
* Look up the colour in the current palette.
*/
inline Colour LookupColourInPalette(uint index)
{
return this->palette.palette[index];
}
inline int ScreenToAnimOffset(const uint32 *video)
{
int raw_offset = video - (const uint32 *)_screen.dst_ptr;
if (_screen.pitch == this->anim_buf_pitch) return raw_offset;
int lines = raw_offset / _screen.pitch;
int across = raw_offset % _screen.pitch;
return across + (lines * this->anim_buf_pitch);
}
template <BlitterMode mode> void Draw(const Blitter::BlitterParams *bp, ZoomLevel zoom);
};
/** Factory for the 32bpp blitter with animation. */
class FBlitter_32bppAnim : public BlitterFactory {
public:
FBlitter_32bppAnim() : BlitterFactory("32bpp-anim", "32bpp Animation Blitter (palette animation)") {}
Blitter *CreateInstance() override { return new Blitter_32bppAnim(); }
};
#endif /* BLITTER_32BPP_ANIM_HPP */
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