76 lines
3.2 KiB
C++
76 lines
3.2 KiB
C++
/* $Id$ */
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/*
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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 16bpp_anim.hpp A 16 bpp blitter with animation support. */
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#ifndef BLITTER_16BPP_ANIM_HPP
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#define BLITTER_16BPP_ANIM_HPP
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#include "16bpp_simple.hpp"
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class Blitter_16bppOptimized: public Blitter_16bppSimple {
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// TODO: implement that
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};
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/** The optimised 16 bpp blitter with palette animation. */
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class Blitter_16bppAnim : public Blitter_16bppOptimized {
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protected:
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// PALETTE_ANIM_SIZE is less than 32, so we'll use 5 bits for color index, and 3 bits for brightness, losing 1 bit compared to struct Pixel
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struct Anim {
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unsigned m : 5 __attribute__((packed)); ///< Color index channel, packed 5 bits, 0 = no animation, 1 = PALETTE_ANIM_START
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unsigned v : 3 __attribute__((packed)); ///< Brightness-channel, packed 3 bits
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};
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Anim *anim_buf; ///< In this buffer we keep track of the 8bpp indexes so we can do palette animation
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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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Colour16 palette[256]; ///< The current palette.
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public:
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Blitter_16bppAnim() :
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anim_buf(NULL),
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anim_buf_width(0),
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anim_buf_height(0)
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{}
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/* virtual */ void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom);
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/* virtual */ void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal);
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/* virtual */ void SetPixel(void *video, int x, int y, uint8 colour);
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/* virtual */ void DrawRect(void *video, int width, int height, uint8 colour);
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/* virtual */ void CopyFromBuffer(void *video, const void *src, int width, int height);
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/* virtual */ void CopyToBuffer(const void *video, void *dst, int width, int height);
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/* virtual */ void ScrollBuffer(void *video, int &left_ref, int &top_ref, int &width_ref, int &height_ref, int scroll_x, int scroll_y);
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/* virtual */ int BufferSize(int width, int height);
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/* virtual */ void PaletteAnimate(const Palette &palette);
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/* virtual */ Blitter::PaletteAnimation UsePaletteAnimation();
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/* virtual */ int GetBytesPerPixel() { return 3; }
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/* virtual */ const char *GetName() { return "16bpp-anim"; }
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/* virtual */ void PostResize();
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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 Colour16 LookupColourInPalette(uint8 index)
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{
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return this->palette[index];
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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 16bpp blitter with animation. */
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class FBlitter_16bppAnim : public BlitterFactory {
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public:
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FBlitter_16bppAnim() : BlitterFactory("16bpp-anim-broken", "16bpp Animation Blitter, currently broken (palette animation)") {}
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/* virtual */ Blitter *CreateInstance() { return new Blitter_16bppAnim(); }
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};
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#endif /* BLITTER_16BPP_ANIM_HPP */
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