1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
/* 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.
*
* $Header$
*
*/
#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;
}
}
}
}
}
|
