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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef BACKENDS_GRAPHICS_ATARI_SCREEN_H
#define BACKENDS_GRAPHICS_ATARI_SCREEN_H
#include <unordered_set>
#include <mint/ostruct.h>
#include "common/rect.h"
#include "graphics/surface.h"
#include "atari-cursor.h"
template<>
struct std::hash<Common::Rect>
{
std::size_t operator()(Common::Rect const& rect) const noexcept
{
return 31 * (31 * (31 * rect.left + rect.top) + rect.right) + rect.bottom;
}
};
class AtariGraphicsManager;
class Palette {
public:
void clear() {
memset(data, 0, sizeof(data));
entries = 0;
}
uint16 *const tt = reinterpret_cast<uint16*>(data);
_RGB *const falcon = reinterpret_cast<_RGB*>(data);
int entries = 0;
private:
byte data[256*4] = {};
};
struct Screen {
using DirtyRects = std::unordered_set<Common::Rect>;
Screen(AtariGraphicsManager *manager, int width, int height, const Graphics::PixelFormat &format, const Palette *palette);
~Screen();
void reset(int width, int height, int bitsPerPixel, const Graphics::Surface &boundingSurf, int xOffset, bool resetCursorPosition);
// must be called before any rectangle drawing
void addDirtyRect(const Graphics::Surface &srcSurface, int x, int y, int w, int h, bool directRendering);
void clearDirtyRects() {
dirtyRects.clear();
fullRedraw = false;
}
Graphics::Surface surf;
const Palette *palette;
DirtyRects dirtyRects;
bool fullRedraw = false;
Cursor cursor;
int rez = -1;
int mode = -1;
Graphics::Surface *const offsettedSurf = &_offsettedSurf;
private:
static constexpr size_t ALIGN = 16; // 16 bytes
enum SteTtRezValue {
kRezValueSTLow = 0, // 320x200@4bpp, ST palette
kRezValueSTMid = 1, // 640x200@2bpp, ST palette
kRezValueSTHigh = 2, // 640x400@1bpp, ST palette
kRezValueTTLow = 7, // 320x480@8bpp, TT palette
kRezValueTTMid = 4, // 640x480@4bpp, TT palette
kRezValueTTHigh = 6 // 1280x960@1bpp, TT palette
};
const AtariGraphicsManager *_manager;
Graphics::Surface _offsettedSurf;
int _xOffset = 0;
};
#endif // BACKENDS_GRAPHICS_ATARI_SCREEN_H
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