glx_query.c revision 848b8605 
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 */
42char *
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   /* The spec doesn't mention this, but the Xorg server replies with
54    * a string already terminated with '\0'. */
55   uint32_t len = xcb_glx_query_server_string_string_length(reply);
56   char *buf = malloc(len);
57   memcpy(buf, xcb_glx_query_server_string_string(reply), len);
58   free(reply);
59
60   return buf;
61}
62
63/**
64 * Exchange a protocol request for glGetString.
65 */
66char *
67__glXGetString(Display * dpy, int opcode, CARD32 contextTag, CARD32 name)
68{
69   xcb_connection_t *c = XGetXCBConnection(dpy);
70   xcb_glx_get_string_reply_t *reply = xcb_glx_get_string_reply(c,
71                                                                xcb_glx_get_string
72                                                                (c,
73                                                                 contextTag,
74                                                                 name),
75                                                                NULL);
76
77   /* The spec doesn't mention this, but the Xorg server replies with
78    * a string already terminated with '\0'. */
79   uint32_t len = xcb_glx_get_string_string_length(reply);
80   char *buf = malloc(len);
81   memcpy(buf, xcb_glx_get_string_string(reply), len);
82   free(reply);
83
84   return buf;
85}
86
87