mirror of
https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
dd49c9e3ce
- fixed aspect ratio correction (overlay destroyed its state, keyboard shortcut didn't always work), as well as significantly sped it up on VGA and SuperVidel - smoother transitions between video modes - reduce the number of video mode changes - fixed a few extreme cases when triple buffering could lose an update - lighter ST RAM usage in the lite build - removed hardware accessing init/deinit routines
103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef BACKENDS_GRAPHICS_ATARI_SCREEN_H
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#define BACKENDS_GRAPHICS_ATARI_SCREEN_H
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#include <unordered_set>
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#include <mint/ostruct.h>
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#include "common/rect.h"
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#include "graphics/surface.h"
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#include "atari-cursor.h"
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template<>
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struct std::hash<Common::Rect>
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{
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std::size_t operator()(Common::Rect const& rect) const noexcept
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{
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return 31 * (31 * (31 * rect.left + rect.top) + rect.right) + rect.bottom;
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}
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};
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class AtariGraphicsManager;
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class Palette {
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public:
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void clear() {
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memset(data, 0, sizeof(data));
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entries = 0;
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}
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uint16 *const tt = reinterpret_cast<uint16*>(data);
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_RGB *const falcon = reinterpret_cast<_RGB*>(data);
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int entries = 0;
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private:
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byte data[256*4] = {};
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};
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struct Screen {
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using DirtyRects = std::unordered_set<Common::Rect>;
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Screen(AtariGraphicsManager *manager, int width, int height, const Graphics::PixelFormat &format, const Palette *palette);
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~Screen();
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void reset(int width, int height, int bitsPerPixel, bool resetCursorPosition);
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// must be called before any rectangle drawing
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void addDirtyRect(const Graphics::Surface &srcSurface, const Common::Rect &rect, bool directRendering);
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void clearDirtyRects() {
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dirtyRects.clear();
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fullRedraw = false;
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}
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Graphics::Surface surf;
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const Palette *palette;
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DirtyRects dirtyRects;
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bool fullRedraw = false;
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Cursor cursor;
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int rez = -1;
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int mode = -1;
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Graphics::Surface *const offsettedSurf = &_offsettedSurf;
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private:
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static constexpr size_t ALIGN = 16; // 16 bytes
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enum SteTtRezValue {
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kRezValueSTLow = 0, // 320x200@4bpp, ST palette
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kRezValueSTMid = 1, // 640x200@2bpp, ST palette
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kRezValueSTHigh = 2, // 640x400@1bpp, ST palette
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kRezValueTTLow = 7, // 320x480@8bpp, TT palette
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kRezValueTTMid = 4, // 640x480@4bpp, TT palette
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kRezValueTTHigh = 6 // 1280x960@1bpp, TT palette
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};
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const AtariGraphicsManager *_manager;
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Graphics::Surface _offsettedSurf;
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};
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#endif // BACKENDS_GRAPHICS_ATARI_SCREEN_H
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