1 /*
2 * QEMU Cirrus VGA Emulator templates
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #if DEPTH == 8
26 #define BPP 1
27 #elif DEPTH == 15 || DEPTH == 16
28 #define BPP 2
29 #elif DEPTH == 32
30 #define BPP 4
31 #else
32 #error unsupported depth
33 #endif
34
glue(vga_draw_cursor_line_,DEPTH)35 static void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1,
36 const uint8_t *src1,
37 int poffset, int w,
38 unsigned int color0,
39 unsigned int color1,
40 unsigned int color_xor)
41 {
42 const uint8_t *plane0, *plane1;
43 int x, b0, b1;
44 uint8_t *d;
45
46 d = d1;
47 plane0 = src1;
48 plane1 = src1 + poffset;
49 for (x = 0; x < w; x++) {
50 b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
51 b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
52 #if DEPTH == 8
53 switch (b0 | (b1 << 1)) {
54 case 0:
55 break;
56 case 1:
57 d[0] ^= color_xor;
58 break;
59 case 2:
60 d[0] = color0;
61 break;
62 case 3:
63 d[0] = color1;
64 break;
65 }
66 #elif DEPTH == 16
67 switch (b0 | (b1 << 1)) {
68 case 0:
69 break;
70 case 1:
71 ((uint16_t *)d)[0] ^= color_xor;
72 break;
73 case 2:
74 ((uint16_t *)d)[0] = color0;
75 break;
76 case 3:
77 ((uint16_t *)d)[0] = color1;
78 break;
79 }
80 #elif DEPTH == 32
81 switch (b0 | (b1 << 1)) {
82 case 0:
83 break;
84 case 1:
85 ((uint32_t *)d)[0] ^= color_xor;
86 break;
87 case 2:
88 ((uint32_t *)d)[0] = color0;
89 break;
90 case 3:
91 ((uint32_t *)d)[0] = color1;
92 break;
93 }
94 #else
95 #error unsupported depth
96 #endif
97 d += BPP;
98 }
99 }
100
101 #undef DEPTH
102 #undef BPP
103