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xcb-test/Makefile
0 → 100644
xcb-test/xcbshm.c
0 → 100644
1 | +/** | |
2 | + * \file | |
3 | + * [: description :] | |
4 | + * | |
5 | + * \author | |
6 | + * Georg Hopp <georg@steffers.org> | |
7 | + * | |
8 | + * \copyright | |
9 | + * Copyright © 2019 Georg Hopp | |
10 | + * | |
11 | + * This program is free software: you can redistribute it and/or modify | |
12 | + * it under the terms of the GNU General Public License as published by | |
13 | + * the Free Software Foundation, either version 3 of the License, or | |
14 | + * (at your option) any later version. | |
15 | + * | |
16 | + * This program is distributed in the hope that it will be useful, | |
17 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | + * GNU General Public License for more details. | |
20 | + * | |
21 | + * You should have received a copy of the GNU General Public License | |
22 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
23 | + */ | |
24 | +// http://stackoverflow.com/questions/27745131 | |
25 | + | |
26 | +#include <sys/ipc.h> | |
27 | +#include <sys/shm.h> | |
28 | + | |
29 | +#include <xcb/xcb.h> | |
30 | +#include <xcb/xcb_image.h> | |
31 | +#include <xcb/shm.h> | |
32 | + | |
33 | +#include <stdio.h> | |
34 | + | |
35 | +#define W 512 | |
36 | +#define H 512 | |
37 | + | |
38 | + | |
39 | +int main(){ | |
40 | + //connect to the X server and get screen | |
41 | + xcb_connection_t* connection = xcb_connect(NULL, NULL); | |
42 | + xcb_screen_t* screen = xcb_setup_roots_iterator(xcb_get_setup(connection)).data; | |
43 | + | |
44 | + //create a window | |
45 | + uint32_t value_mask = XCB_CW_BACK_PIXEL|XCB_CW_EVENT_MASK; | |
46 | + uint32_t value_list[2] = {screen->black_pixel, XCB_EVENT_MASK_EXPOSURE}; | |
47 | + xcb_window_t window = xcb_generate_id(connection); | |
48 | + xcb_create_window(connection, screen->root_depth, window, screen->root, 0, 0, W, H, 0, | |
49 | + XCB_WINDOW_CLASS_INPUT_OUTPUT, screen->root_visual, value_mask, value_list); | |
50 | + | |
51 | + //create a graphic context | |
52 | + value_mask = XCB_GC_FOREGROUND|XCB_GC_GRAPHICS_EXPOSURES; | |
53 | + value_list[0] = screen->black_pixel; | |
54 | + value_list[1] = 0; | |
55 | + xcb_gcontext_t gcontext = xcb_generate_id(connection); | |
56 | + xcb_create_gc(connection, gcontext, window, value_mask, value_list); | |
57 | + | |
58 | + //map the window onto the screen | |
59 | + xcb_map_window(connection, window); | |
60 | + xcb_flush(connection); | |
61 | + | |
62 | + //Shm test | |
63 | + xcb_shm_segment_info_t info; | |
64 | + xcb_shm_query_version_reply(connection, xcb_shm_query_version(connection), NULL); | |
65 | + | |
66 | + info.shmid = shmget(IPC_PRIVATE, W*H*4, IPC_CREAT|0777); | |
67 | + info.shmaddr = shmat(info.shmid, 0, 0); | |
68 | + info.shmseg = xcb_generate_id(connection); | |
69 | + xcb_shm_attach(connection, info.shmseg, info.shmid, 0); | |
70 | + shmctl(info.shmid, IPC_RMID, 0); | |
71 | + uint8_t* data = info.shmaddr; | |
72 | + | |
73 | + xcb_pixmap_t pix = xcb_generate_id(connection); | |
74 | + xcb_shm_create_pixmap(connection, pix, window, W, H, screen->root_depth, info.shmseg, 0); | |
75 | + | |
76 | + | |
77 | + uint8_t lala[W*H*4] = {0}; | |
78 | + const xcb_setup_t* setup = xcb_get_setup(connection); | |
79 | + xcb_format_t* fmt = xcb_setup_pixmap_formats(setup); | |
80 | + printf("scanline_pad %u depth %u bpp %u byte_order %u\n", | |
81 | + fmt->scanline_pad, fmt->depth, fmt->bits_per_pixel, setup->image_byte_order); | |
82 | + xcb_image_t* img = xcb_image_create(W,H, XCB_IMAGE_FORMAT_Z_PIXMAP, | |
83 | + fmt->scanline_pad, 24, 32, 0, setup->image_byte_order, XCB_IMAGE_ORDER_LSB_FIRST, lala, W*H*4, lala); | |
84 | + | |
85 | + // xcb_image_shm_get(connection, window, img, info, 0,0, XCB_IMAGE_FORMAT_Z_PIXMAP); | |
86 | + // xcb_image_shm_put(connection, window, img, info, 0,0, XCB_IMAGE_FORMAT_Z_PIXMAP); | |
87 | + | |
88 | + | |
89 | + // -------------------------------------------------------------- | |
90 | + uint i = 0; | |
91 | + while(1){ | |
92 | + data[i++] = 0xff; | |
93 | + xcb_copy_area(connection, pix, window, gcontext, 0, 0, 0, 0, W, H); | |
94 | + xcb_flush(connection); | |
95 | + } | |
96 | + | |
97 | + xcb_shm_detach(connection, info.shmseg); | |
98 | + shmdt(info.shmaddr); | |
99 | + | |
100 | + xcb_free_pixmap(connection, pix); | |
101 | + xcb_destroy_window(connection, window); | |
102 | + xcb_disconnect(connection); | |
103 | +} | |
104 | + | |
105 | +// vim: set ts=4 sw=4: | ... | ... |
xcb-test/xcbshm2.c
0 → 100644
1 | +/** | |
2 | + * \file | |
3 | + * [: description :] | |
4 | + * | |
5 | + * \author | |
6 | + * Georg Hopp <georg@steffers.org> | |
7 | + * | |
8 | + * \copyright | |
9 | + * Copyright © 2019 Georg Hopp | |
10 | + * | |
11 | + * This program is free software: you can redistribute it and/or modify | |
12 | + * it under the terms of the GNU General Public License as published by | |
13 | + * the Free Software Foundation, either version 3 of the License, or | |
14 | + * (at your option) any later version. | |
15 | + * | |
16 | + * This program is distributed in the hope that it will be useful, | |
17 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | + * GNU General Public License for more details. | |
20 | + * | |
21 | + * You should have received a copy of the GNU General Public License | |
22 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
23 | + */ | |
24 | +#include <stdlib.h> | |
25 | +#include <stdio.h> | |
26 | +#include <unistd.h> | |
27 | + | |
28 | +#include <sys/ipc.h> | |
29 | +#include <sys/shm.h> | |
30 | + | |
31 | +#include <xcb/xcb.h> | |
32 | +#include <xcb/shm.h> | |
33 | +#include <xcb/xcb_image.h> | |
34 | + | |
35 | + | |
36 | +#define WID 512 | |
37 | +#define HEI 512 | |
38 | + | |
39 | + | |
40 | +int main(){ | |
41 | + xcb_connection_t* connection; | |
42 | + xcb_window_t window; | |
43 | + xcb_screen_t* screen; | |
44 | + xcb_gcontext_t gcontext; | |
45 | + xcb_generic_event_t* event; | |
46 | + | |
47 | + uint32_t value_mask; | |
48 | + uint32_t value_list[2]; | |
49 | + | |
50 | + //connect to the X server and get screen | |
51 | + | |
52 | + connection = xcb_connect(NULL, NULL); | |
53 | + screen = xcb_setup_roots_iterator(xcb_get_setup(connection)).data; | |
54 | + | |
55 | + //create a window | |
56 | + | |
57 | + value_mask = XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK; | |
58 | + value_list[0] = screen->black_pixel; | |
59 | + value_list[1] = XCB_EVENT_MASK_EXPOSURE; | |
60 | + | |
61 | + window = xcb_generate_id(connection); | |
62 | + | |
63 | + xcb_create_window( | |
64 | + connection, | |
65 | + screen->root_depth, | |
66 | + window, | |
67 | + screen->root, | |
68 | + 0, 0, | |
69 | + WID, HEI, | |
70 | + 0, | |
71 | + XCB_WINDOW_CLASS_INPUT_OUTPUT, | |
72 | + screen->root_visual, | |
73 | + value_mask, value_list | |
74 | + ); | |
75 | + | |
76 | + //create a graphic context | |
77 | + | |
78 | + value_mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES; | |
79 | + value_list[0] = screen->black_pixel; | |
80 | + value_list[1] = 0; | |
81 | + | |
82 | + gcontext = xcb_generate_id(connection); | |
83 | + xcb_create_gc(connection, gcontext, window, value_mask, value_list); | |
84 | + | |
85 | + //map the window onto the screen | |
86 | + | |
87 | + xcb_map_window(connection, window); | |
88 | + xcb_flush(connection); | |
89 | + | |
90 | + | |
91 | + //Shm test | |
92 | + xcb_shm_query_version_reply_t* reply; | |
93 | + xcb_shm_segment_info_t info; | |
94 | + | |
95 | + reply = xcb_shm_query_version_reply( | |
96 | + connection, | |
97 | + xcb_shm_query_version(connection), | |
98 | + NULL | |
99 | + ); | |
100 | + | |
101 | + if(!reply || !reply->shared_pixmaps){ | |
102 | + printf("Shm error...\n"); | |
103 | + exit(0); | |
104 | + } | |
105 | + | |
106 | + info.shmid = shmget(IPC_PRIVATE, WID*HEI*4, IPC_CREAT | 0777); | |
107 | + info.shmaddr = shmat(info.shmid, 0, 0); | |
108 | + | |
109 | + info.shmseg = xcb_generate_id(connection); | |
110 | + xcb_shm_attach(connection, info.shmseg, info.shmid, 0); | |
111 | + shmctl(info.shmid, IPC_RMID, 0); | |
112 | + | |
113 | + uint32_t* data = (uint32_t*)info.shmaddr; | |
114 | + | |
115 | + xcb_pixmap_t pix = xcb_generate_id(connection); | |
116 | + xcb_shm_create_pixmap( | |
117 | + connection, | |
118 | + pix, | |
119 | + window, | |
120 | + WID, HEI, | |
121 | + screen->root_depth, | |
122 | + info.shmseg, | |
123 | + 0 | |
124 | + ); | |
125 | + | |
126 | + int i = 0; | |
127 | + while(1){ | |
128 | + usleep(10000); | |
129 | + | |
130 | + data[i] = 0xFFFFFF; | |
131 | + i++; | |
132 | + | |
133 | + xcb_copy_area( | |
134 | + connection, | |
135 | + pix, | |
136 | + window, | |
137 | + gcontext, | |
138 | + 0, 0, 0, 0, | |
139 | + WID, HEI | |
140 | + ); | |
141 | + | |
142 | + xcb_flush(connection); | |
143 | + } | |
144 | + | |
145 | + xcb_shm_detach(connection, info.shmseg); | |
146 | + shmdt(info.shmaddr); | |
147 | + | |
148 | + xcb_free_pixmap(connection, pix); | |
149 | + | |
150 | + xcb_destroy_window(connection, window); | |
151 | + xcb_disconnect(connection); | |
152 | + | |
153 | + return 0; | |
154 | +} | |
155 | + | |
156 | +// vim: set ts=4 sw=4: | ... | ... |
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