dri3/dri3.c

   1 /*
   2  * Copyright © 2013 Keith Packard
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that copyright
   7  * notice and this permission notice appear in supporting documentation, and
   8  * that the name of the copyright holders not be used in advertising or
   9  * publicity pertaining to distribution of the software without specific,
  10  * written prior permission.  The copyright holders make no representations
  11  * about the suitability of this software for any purpose.  It is provided "as
  12  * is" without express or implied warranty.
  13  *
  14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  20  * OF THIS SOFTWARE.
  21  */
  22
  23 #ifdef HAVE_XORG_CONFIG_H
  24 #include <xorg-config.h>
  25 #endif
  26
  27 #include "dri3_priv.h"
  28
  29 int dri3_request;
  30 DevPrivateKeyRec dri3_screen_private_key;
  31 DevPrivateKeyRec dri3_window_private_key;
  32
  33 static Bool
  34 dri3_close_screen(ScreenPtr screen)
  35 {
  36     dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
  37
  38     unwrap(screen_priv, screen, CloseScreen);
  39
  40     free(screen_priv);
  41     return (*screen->CloseScreen) (screen);
  42 }
  43
  44 Bool
  45 dri3_screen_init(ScreenPtr screen, dri3_screen_info_ptr info)
  46 {
  47     if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
  48         return FALSE;
  49
  50     if (!dri3_screen_priv(screen)) {
  51         dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
  52         if (!screen_priv)
  53             return FALSE;
  54
  55         wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
  56
  57         screen_priv->info = info;
  58
  59         dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
  60     }
  61
  62     return TRUE;
  63 }
  64
  65 void
  66 dri3_extension_init(void)
  67 {
  68     ExtensionEntry *extension;
  69     int i;
  70
  71 #ifdef PANORAMIX
  72     if (!noPanoramiXExtension)
  73         return;
  74 #endif
  75
  76     extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
  77                              proc_dri3_dispatch, sproc_dri3_dispatch,
  78                              NULL, StandardMinorOpcode);
  79     if (!extension)
  80         goto bail;
  81
  82     dri3_request = extension->base;
  83
  84     for (i = 0; i < screenInfo.numScreens; i++) {
  85         if (!dri3_screen_init(screenInfo.screens[i], NULL))
  86             goto bail;
  87     }
  88     return;
  89
  90 bail:
  91     FatalError("Cannot initialize DRI3 extension");
  92 }