33aeec8a11
There's no reason to advertise this extension unless one of the hardware drivers actually supports it. Not listing it means it's slightly easier for users to tell what's going on. On the other hand, not listing it means we may have applications that only check for the extension and not for appropriate per-screen support. I don't think that's a real risk as DRI3 is only useful for systems with deep knowledge of the hardware. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Eric Anholt <eric@anholt.net>
103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
/*
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* Copyright © 2013 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "dri3_priv.h"
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int dri3_request;
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DevPrivateKeyRec dri3_screen_private_key;
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DevPrivateKeyRec dri3_window_private_key;
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static int dri3_screen_generation;
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static Bool
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dri3_close_screen(ScreenPtr screen)
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{
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dri3_screen_priv_ptr screen_priv = dri3_screen_priv(screen);
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unwrap(screen_priv, screen, CloseScreen);
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free(screen_priv);
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return (*screen->CloseScreen) (screen);
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}
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Bool
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dri3_screen_init(ScreenPtr screen, dri3_screen_info_ptr info)
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{
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dri3_screen_generation = serverGeneration;
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if (!dixRegisterPrivateKey(&dri3_screen_private_key, PRIVATE_SCREEN, 0))
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return FALSE;
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if (!dri3_screen_priv(screen)) {
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dri3_screen_priv_ptr screen_priv = calloc(1, sizeof (dri3_screen_priv_rec));
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if (!screen_priv)
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return FALSE;
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wrap(screen_priv, screen, CloseScreen, dri3_close_screen);
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screen_priv->info = info;
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dixSetPrivate(&screen->devPrivates, &dri3_screen_private_key, screen_priv);
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}
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return TRUE;
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}
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void
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dri3_extension_init(void)
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{
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ExtensionEntry *extension;
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int i;
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/* If no screens support DRI3, there's no point offering the
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* extension at all
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*/
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if (dri3_screen_generation != serverGeneration)
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return;
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#ifdef PANORAMIX
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if (!noPanoramiXExtension)
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return;
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#endif
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extension = AddExtension(DRI3_NAME, DRI3NumberEvents, DRI3NumberErrors,
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proc_dri3_dispatch, sproc_dri3_dispatch,
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NULL, StandardMinorOpcode);
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if (!extension)
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goto bail;
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dri3_request = extension->base;
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for (i = 0; i < screenInfo.numScreens; i++) {
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if (!dri3_screen_init(screenInfo.screens[i], NULL))
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goto bail;
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}
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return;
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bail:
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FatalError("Cannot initialize DRI3 extension");
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}
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