diff options
Diffstat (limited to 'engines/gob/driver_vga.cpp')
| -rw-r--r-- | engines/gob/driver_vga.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/engines/gob/driver_vga.cpp b/engines/gob/driver_vga.cpp new file mode 100644 index 0000000000..3a2f44bc11 --- /dev/null +++ b/engines/gob/driver_vga.cpp @@ -0,0 +1,156 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2004 Ivan Dubrov + * Copyright (C) 2004-2006 The ScummVM project + * + * 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 2 + * 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, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ +#include "gob/driver_vga.h" +#include "graphics/primitives.h" + +#if defined (_MSC_VER) || defined (__WINS__) +#define STUB_FUNC printf("STUB:") +#else +#define STUB_FUNC printf("STUB: %s\n", __PRETTY_FUNCTION__) +#endif + +namespace Gob { + +void VGAVideoDriver::drawSprite(Video::SurfaceDesc *source, Video::SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, int16 x, int16 y, int16 transp) { + if (x >= 0 && x < dest->width && y >= 0 && y < dest->height) { + int16 width = (right - left) + 1; + int16 height = (bottom - top) + 1; + + byte *srcPos = source->vidPtr + (top * source->width) + left; + byte *destPos = dest->vidPtr + (y * dest->width) + x; + while (height--) { + if (transp) { + for (int16 i = 0; i < width; ++i) { + if (srcPos[i]) + destPos[i] = srcPos[i]; + } + } else { + for (int16 i = 0; i < width; ++i) + destPos[i] = srcPos[i]; + } + + srcPos += source->width; //width ? + destPos += dest->width; + } + } +} + +void VGAVideoDriver::fillRect(Video::SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom, byte color) { + if (left < dest->width && right < dest->width && top < dest->height && bottom < dest->height) { + byte *pos = dest->vidPtr + (top * dest->width) + left; + int16 width = (right - left) + 1; + int16 height = (bottom - top) + 1; + while (height--) { + for (int16 i = 0; i < width; ++i) { + pos[i] = color; + } + + pos += dest->width; + } + } +} + +void VGAVideoDriver::putPixel(int16 x, int16 y, byte color, Video::SurfaceDesc *dest) { + if (x >= 0 && x < dest->width && y >= 0 && y < dest->height) + dest->vidPtr[(y * dest->width) + x] = color; +} + +void VGAVideoDriver::drawLetter(unsigned char item, int16 x, int16 y, Video::FontDesc *fontDesc, byte color1, byte color2, byte transp, Video::SurfaceDesc *dest) { + byte *src, *dst; + uint16 data; + int i, j; + + src = (byte *)fontDesc->dataPtr + (item - fontDesc->startItem) * (fontDesc->itemSize & 0xff); + dst = dest->vidPtr + x + dest->width * y; + + for (i = 0; i < fontDesc->itemHeight; i++) { + data = READ_BE_UINT16(src); + src += 2; + if (fontDesc->itemSize <= 8) + src--; + + for (j = 0; j < fontDesc->itemWidth; j++) { + if (data & 0x8000) { + *dst = color2; + } else { + if (color1 == 0) + *dst = transp; + } + dst++; + data <<= 1; + } + dst += dest->width - fontDesc->itemWidth; + } +} + +static void plotPixel(int x, int y, int color, void *data) { + Video::SurfaceDesc *dest = (Video::SurfaceDesc *)data; + if (x >= 0 && x < dest->width && y >= 0 && y < dest->height) + dest->vidPtr[(y * dest->width) + x] = color; +} + +void VGAVideoDriver::drawLine(Video::SurfaceDesc *dest, int16 x0, int16 y0, int16 x1, int16 y1, byte color) { + Graphics::drawLine(x0, y0, x1, y1, color, &plotPixel, dest); +} + +void VGAVideoDriver::drawPackedSprite(byte *sprBuf, int16 width, int16 height, int16 x, int16 y, byte transp, Video::SurfaceDesc *dest) { + int destRight = x + width; + int destBottom = y + height; + + byte* dst = dest->vidPtr + x + dest->width * y; + + int curx = x; + int cury = y; + + while (1) { + uint8 val = *sprBuf++; + unsigned int repeat = val & 7; + val &= 0xF8; + if (!(val & 8)) { + repeat <<= 8; + repeat |= *sprBuf++; + } + repeat++; + val >>= 4; + + for (unsigned int i = 0; i < repeat; ++i) { + if (curx < dest->width && cury < dest->height) + if (!transp || val) + *dst = val; + + dst++; + curx++; + if (curx == destRight) { + dst += dest->width + x - curx; + curx = x; + cury++; + if (cury == destBottom) + return; + } + } + } + +} + +} + |