1 /*
2 d_fill.c
3
4 clears a specified rectangle to the specified color
5
6 Copyright (C) 1996-1997 Id Software, Inc.
7
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 as published by the Free Software Foundation; either version 2
11 of the License, or (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16
17 See the GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to:
21
22 Free Software Foundation, Inc.
23 59 Temple Place - Suite 330
24 Boston, MA 02111-1307, USA
25
26 */
27 #ifdef HAVE_CONFIG_H
28 # include "config.h"
29 #endif
30
31 #define NH_DEFINE
32 #include "namehack.h"
33
34 #include "QF/sys.h"
35
36 #include "d_iface.h"
37 #include "r_internal.h"
38 #include "vid_internal.h"
39
40
41 void
sw32_D_FillRect(vrect_t * rect,int color)42 sw32_D_FillRect (vrect_t *rect, int color)
43 {
44 switch (sw32_r_pixbytes)
45 {
46 case 1:
47 {
48 int rx, ry, rwidth, rheight;
49 byte *dest, pix;
50
51 pix = color;
52
53 rx = rect->x;
54 ry = rect->y;
55 rwidth = rect->width;
56 rheight = rect->height;
57
58 if (rx < 0) {
59 rwidth += rx;
60 rx = 0;
61 }
62 if (ry < 0) {
63 rheight += ry;
64 ry = 0;
65 }
66 if (rx + rwidth > vid.width)
67 rwidth = vid.width - rx;
68 if (ry + rheight > vid.height)
69 rheight = vid.height - rx;
70
71 if (rwidth < 1 || rheight < 1)
72 return;
73
74 dest = (byte *) vid.buffer + ry * vid.rowbytes + rx;
75
76 for (ry = 0; ry < rheight; ry++)
77 {
78 for (rx = 0; rx < rwidth; rx++)
79 dest[rx] = pix;
80 dest += vid.rowbytes;
81 }
82 }
83 break;
84 case 2:
85 {
86 int rx, ry, rwidth, rheight;
87 unsigned short *dest, pix;
88
89 pix = sw32_8to16table[color];
90
91 rx = rect->x;
92 ry = rect->y;
93 rwidth = rect->width;
94 rheight = rect->height;
95
96 if (rx < 0) {
97 rwidth += rx;
98 rx = 0;
99 }
100 if (ry < 0) {
101 rheight += ry;
102 ry = 0;
103 }
104 if (rx + rwidth > vid.width)
105 rwidth = vid.width - rx;
106 if (ry + rheight > vid.height)
107 rheight = vid.height - rx;
108
109 if (rwidth < 1 || rheight < 1)
110 return;
111
112 dest = (unsigned short *) vid.buffer + ry * (vid.rowbytes >> 1) +
113 rx;
114
115 for (ry = 0; ry < rheight; ry++)
116 {
117 for (rx = 0; rx < rwidth; rx++)
118 dest[rx] = pix;
119 dest += (vid.rowbytes >> 1);
120 }
121 }
122 break;
123 case 4:
124 {
125 int rx, ry, rwidth, rheight;
126 unsigned int *dest, pix;
127
128 pix = d_8to24table[color];
129
130 rx = rect->x;
131 ry = rect->y;
132 rwidth = rect->width;
133 rheight = rect->height;
134
135 if (rx < 0) {
136 rwidth += rx;
137 rx = 0;
138 }
139 if (ry < 0) {
140 rheight += ry;
141 ry = 0;
142 }
143 if (rx + rwidth > vid.width)
144 rwidth = vid.width - rx;
145 if (ry + rheight > vid.height)
146 rheight = vid.height - rx;
147
148 if (rwidth < 1 || rheight < 1)
149 return;
150
151 dest = (unsigned int *) vid.buffer + ry * (vid.rowbytes >> 2) + rx;
152
153 for (ry = 0; ry < rheight; ry++)
154 {
155 for (rx = 0; rx < rwidth; rx++)
156 dest[rx] = pix;
157 dest += (vid.rowbytes >> 2);
158 }
159 }
160 break;
161 default:
162 Sys_Error("D_FillRect: unsupported r_pixbytes %i", sw32_r_pixbytes);
163 }
164 }
165