1 /*
2 * (C) Copyright IBM Corporation 2004
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * 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 NON-INFRINGEMENT. IN NO EVENT SHALL
19 * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24
25 /**
26 * \file glx_query.c
27 * Generic utility functions to query internal data from the server.
28 *
29 * \author Ian Romanick <idr@us.ibm.com>
30 */
31
32 #include "glxclient.h"
33
34 # include <X11/Xlib-xcb.h>
35 # include <xcb/xcb.h>
36 # include <xcb/glx.h>
37
38
39 /**
40 * Exchange a protocol request for glXQueryServerString.
41 */
42 char *
__glXQueryServerString(Display * dpy,int opcode,CARD32 screen,CARD32 name)43 __glXQueryServerString(Display * dpy, int opcode, CARD32 screen, CARD32 name)
44 {
45 xcb_connection_t *c = XGetXCBConnection(dpy);
46 xcb_glx_query_server_string_reply_t *reply =
47 xcb_glx_query_server_string_reply(c,
48 xcb_glx_query_server_string(c,
49 screen,
50 name),
51 NULL);
52
53 if (!reply)
54 return NULL;
55
56 /* The spec doesn't mention this, but the Xorg server replies with
57 * a string already terminated with '\0'. */
58 uint32_t len = xcb_glx_query_server_string_string_length(reply);
59 char *buf = malloc(len);
60 memcpy(buf, xcb_glx_query_server_string_string(reply), len);
61 free(reply);
62
63 return buf;
64 }
65
66 /**
67 * Exchange a protocol request for glGetString.
68 */
69 char *
__glXGetString(Display * dpy,int opcode,CARD32 contextTag,CARD32 name)70 __glXGetString(Display * dpy, int opcode, CARD32 contextTag, CARD32 name)
71 {
72 xcb_connection_t *c = XGetXCBConnection(dpy);
73 xcb_glx_get_string_reply_t *reply = xcb_glx_get_string_reply(c,
74 xcb_glx_get_string
75 (c,
76 contextTag,
77 name),
78 NULL);
79
80 if (!reply)
81 return NULL;
82
83 /* The spec doesn't mention this, but the Xorg server replies with
84 * a string already terminated with '\0'. */
85 uint32_t len = xcb_glx_get_string_string_length(reply);
86 char *buf = malloc(len);
87 memcpy(buf, xcb_glx_get_string_string(reply), len);
88 free(reply);
89
90 return buf;
91 }
92
93