mirror of
https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
112 lines
4 KiB
C++
112 lines
4 KiB
C++
/* 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_VIDEL_H
|
|
#define BACKENDS_GRAPHICS_ATARI_VIDEL_H
|
|
|
|
#include "backends/graphics/atari/atari-graphics.h"
|
|
|
|
#include "backends/graphics/atari/atari-c2p-asm.h"
|
|
#include "backends/graphics/atari/atari-graphics-asm.h"
|
|
#include "common/system.h"
|
|
|
|
class AtariVidelManager : public AtariGraphicsManager {
|
|
public:
|
|
AtariVidelManager() {
|
|
// using virtual methods so must be done here
|
|
allocateSurfaces();
|
|
}
|
|
|
|
~AtariVidelManager() {
|
|
// using virtual methods so must be done here
|
|
freeSurfaces();
|
|
}
|
|
|
|
private:
|
|
void copyRectToSurface(Graphics::Surface &dstSurface, int dstBitsPerPixel, const Graphics::Surface &srcSurface,
|
|
int destX, int destY,
|
|
const Common::Rect &subRect) const override {
|
|
// 'pChunkyEnd' is a delicate parameter: the c2p routine compares it to the address register
|
|
// used for pixel reading; two common mistakes:
|
|
// 1. (subRect.left, subRect.bottom) = beginning of the next line *including the offset*
|
|
// 2. (subRect.right, subRect.bottom) = even worse, end of the *next* line, not current one
|
|
const byte *pChunky = (const byte *)srcSurface.getBasePtr(subRect.left, subRect.top);
|
|
const byte *pChunkyEnd = (const byte *)srcSurface.getBasePtr(subRect.right, subRect.bottom-1);
|
|
|
|
byte *pScreen = (byte *)dstSurface.getPixels() + destY * dstSurface.pitch + destX * dstBitsPerPixel/8;
|
|
|
|
if (dstBitsPerPixel == 8) {
|
|
if (srcSurface.pitch == subRect.width()) {
|
|
if (srcSurface.pitch == dstSurface.pitch) {
|
|
asm_c2p1x1_8(pChunky, pChunkyEnd, pScreen);
|
|
return;
|
|
} else if (srcSurface.pitch == dstSurface.pitch/2) {
|
|
asm_c2p1x1_8_tt(pChunky, pChunkyEnd, pScreen, dstSurface.pitch);
|
|
return;
|
|
}
|
|
}
|
|
|
|
asm_c2p1x1_8_rect(
|
|
pChunky, pChunkyEnd,
|
|
subRect.width(),
|
|
srcSurface.pitch,
|
|
pScreen,
|
|
dstSurface.pitch);
|
|
} else {
|
|
if (srcSurface.pitch == subRect.width() && srcSurface.pitch/2 == dstSurface.pitch) {
|
|
asm_c2p1x1_4(pChunky, pChunkyEnd, pScreen);
|
|
return;
|
|
}
|
|
|
|
asm_c2p1x1_4_rect(
|
|
pChunky, pChunkyEnd,
|
|
subRect.width(),
|
|
srcSurface.pitch,
|
|
pScreen,
|
|
dstSurface.pitch);
|
|
}
|
|
}
|
|
|
|
void drawMaskedSprite(Graphics::Surface &dstSurface, int dstBitsPerPixel,
|
|
const Graphics::Surface &srcSurface, const Graphics::Surface &srcMask,
|
|
int destX, int destY,
|
|
const Common::Rect &subRect) override {
|
|
if (dstBitsPerPixel == 4) {
|
|
asm_draw_4bpl_sprite(
|
|
(uint16 *)dstSurface.getPixels(), (const uint16 *)srcSurface.getBasePtr(subRect.left, subRect.top),
|
|
(const uint16 *)srcMask.getBasePtr(subRect.left, subRect.top),
|
|
destX, destY,
|
|
dstSurface.pitch, subRect.width(), subRect.height());
|
|
} else if (dstBitsPerPixel == 8) {
|
|
asm_draw_8bpl_sprite(
|
|
(uint16 *)dstSurface.getPixels(), (const uint16 *)srcSurface.getBasePtr(subRect.left, subRect.top),
|
|
(const uint16 *)srcMask.getBasePtr(subRect.left, subRect.top),
|
|
destX, destY,
|
|
dstSurface.pitch, subRect.width(), subRect.height());
|
|
}
|
|
}
|
|
|
|
Common::Rect alignRect(int x, int y, int w, int h) const override {
|
|
return Common::Rect(x & (-16), y, (x + w + 15) & (-16), y + h);
|
|
}
|
|
};
|
|
|
|
#endif
|