Home | History | Annotate | Download | only in glx 
      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 (at) 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 *
     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  */
     66 char *
     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