2 * Copyright © 2013 Keith Packard
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.
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
24 * Portions of this code were adapted from dri2_glx.c which carries the
25 * following copyright:
27 * Copyright © 2008 Red Hat, Inc.
29 * Permission is hereby granted, free of charge, to any person obtaining a
30 * copy of this software and associated documentation files (the "Soft-
31 * ware"), to deal in the Software without restriction, including without
32 * limitation the rights to use, copy, modify, merge, publish, distribute,
33 * and/or sell copies of the Software, and to permit persons to whom the
34 * Software is furnished to do so, provided that the above copyright
35 * notice(s) and this permission notice appear in all copies of the Soft-
36 * ware and that both the above copyright notice(s) and this permission
37 * notice appear in supporting documentation.
39 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
40 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
41 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
42 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
43 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
44 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
45 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
46 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
47 * MANCE OF THIS SOFTWARE.
49 * Except as contained in this notice, the name of a copyright holder shall
50 * not be used in advertising or otherwise to promote the sale, use or
51 * other dealings in this Software without prior written authorization of
52 * the copyright holder.
55 * Kristian Høgsberg (krh@redhat.com)
58 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
61 #include <X11/extensions/Xfixes.h>
62 #include <X11/Xlib-xcb.h>
63 #include <X11/xshmfence.h>
66 #include <xcb/present.h>
69 #include "glxclient.h"
74 #include <sys/types.h>
79 #include "dri_common.h"
80 #include "dri3_priv.h"
83 static const struct glx_context_vtable dri3_context_vtable
;
86 dri3_fence_reset(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
88 xshmfence_reset(buffer
->shm_fence
);
92 dri3_fence_set(struct dri3_buffer
*buffer
)
94 xshmfence_trigger(buffer
->shm_fence
);
98 dri3_fence_trigger(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
100 xcb_sync_trigger_fence(c
, buffer
->sync_fence
);
104 dri3_fence_await(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
107 xshmfence_await(buffer
->shm_fence
);
111 dri3_fence_triggered(struct dri3_buffer
*buffer
)
113 return xshmfence_query(buffer
->shm_fence
);
117 dri3_destroy_context(struct glx_context
*context
)
119 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
120 struct dri3_screen
*psc
= (struct dri3_screen
*) context
->psc
;
122 driReleaseDrawables(&pcp
->base
);
124 free((char *) context
->extensions
);
126 (*psc
->core
->destroyContext
) (pcp
->driContext
);
132 dri3_bind_context(struct glx_context
*context
, struct glx_context
*old
,
133 GLXDrawable draw
, GLXDrawable read
)
135 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
136 struct dri3_screen
*psc
= (struct dri3_screen
*) pcp
->base
.psc
;
137 struct dri3_drawable
*pdraw
, *pread
;
139 pdraw
= (struct dri3_drawable
*) driFetchDrawable(context
, draw
);
140 pread
= (struct dri3_drawable
*) driFetchDrawable(context
, read
);
142 driReleaseDrawables(&pcp
->base
);
144 if (pdraw
== NULL
|| pread
== NULL
)
145 return GLXBadDrawable
;
147 if (!(*psc
->core
->bindContext
) (pcp
->driContext
,
148 pdraw
->driDrawable
, pread
->driDrawable
))
149 return GLXBadContext
;
155 dri3_unbind_context(struct glx_context
*context
, struct glx_context
*new)
157 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
158 struct dri3_screen
*psc
= (struct dri3_screen
*) pcp
->base
.psc
;
160 (*psc
->core
->unbindContext
) (pcp
->driContext
);
163 static struct glx_context
*
164 dri3_create_context_attribs(struct glx_screen
*base
,
165 struct glx_config
*config_base
,
166 struct glx_context
*shareList
,
167 unsigned num_attribs
,
168 const uint32_t *attribs
,
171 struct dri3_context
*pcp
= NULL
;
172 struct dri3_context
*pcp_shared
= NULL
;
173 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
174 __GLXDRIconfigPrivate
*config
= (__GLXDRIconfigPrivate
*) config_base
;
175 __DRIcontext
*shared
= NULL
;
177 uint32_t minor_ver
= 1;
178 uint32_t major_ver
= 2;
181 int reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
182 uint32_t ctx_attribs
[2 * 5];
183 unsigned num_ctx_attribs
= 0;
184 uint32_t render_type
;
186 /* Remap the GLX tokens to DRI2 tokens.
188 if (!dri2_convert_glx_attribs(num_attribs
, attribs
,
189 &major_ver
, &minor_ver
,
190 &render_type
, &flags
, &api
,
194 /* Check the renderType value */
195 if (!validate_renderType_against_config(config_base
, render_type
))
199 pcp_shared
= (struct dri3_context
*) shareList
;
200 shared
= pcp_shared
->driContext
;
203 pcp
= calloc(1, sizeof *pcp
);
205 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
209 if (!glx_context_init(&pcp
->base
, &psc
->base
, &config
->base
))
212 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_MAJOR_VERSION
;
213 ctx_attribs
[num_ctx_attribs
++] = major_ver
;
214 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_MINOR_VERSION
;
215 ctx_attribs
[num_ctx_attribs
++] = minor_ver
;
217 /* Only send a value when the non-default value is requested. By doing
218 * this we don't have to check the driver's DRI3 version before sending the
221 if (reset
!= __DRI_CTX_RESET_NO_NOTIFICATION
) {
222 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_RESET_STRATEGY
;
223 ctx_attribs
[num_ctx_attribs
++] = reset
;
227 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_FLAGS
;
229 /* The current __DRI_CTX_FLAG_* values are identical to the
230 * GLX_CONTEXT_*_BIT values.
232 ctx_attribs
[num_ctx_attribs
++] = flags
;
236 (*psc
->image_driver
->createContextAttribs
) (psc
->driScreen
,
245 if (pcp
->driContext
== NULL
)
248 pcp
->base
.vtable
= &dri3_context_vtable
;
258 static struct glx_context
*
259 dri3_create_context(struct glx_screen
*base
,
260 struct glx_config
*config_base
,
261 struct glx_context
*shareList
, int renderType
)
265 return dri3_create_context_attribs(base
, config_base
, shareList
,
270 dri3_free_render_buffer(struct dri3_drawable
*pdraw
, struct dri3_buffer
*buffer
);
273 dri3_destroy_drawable(__GLXDRIdrawable
*base
)
275 struct dri3_screen
*psc
= (struct dri3_screen
*) base
->psc
;
276 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
277 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->base
.psc
->dpy
);
280 (*psc
->core
->destroyDrawable
) (pdraw
->driDrawable
);
282 for (i
= 0; i
< DRI3_NUM_BUFFERS
; i
++) {
283 if (pdraw
->buffers
[i
])
284 dri3_free_render_buffer(pdraw
, pdraw
->buffers
[i
]);
287 if (pdraw
->special_event
)
288 xcb_unregister_for_special_event(c
, pdraw
->special_event
);
292 static __GLXDRIdrawable
*
293 dri3_create_drawable(struct glx_screen
*base
, XID xDrawable
,
294 GLXDrawable drawable
, struct glx_config
*config_base
)
296 struct dri3_drawable
*pdraw
;
297 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
298 __GLXDRIconfigPrivate
*config
= (__GLXDRIconfigPrivate
*) config_base
;
299 GLint vblank_mode
= DRI_CONF_VBLANK_DEF_INTERVAL_1
;
301 pdraw
= calloc(1, sizeof(*pdraw
));
305 pdraw
->base
.destroyDrawable
= dri3_destroy_drawable
;
306 pdraw
->base
.xDrawable
= xDrawable
;
307 pdraw
->base
.drawable
= drawable
;
308 pdraw
->base
.psc
= &psc
->base
;
309 pdraw
->swap_interval
= 1; /* default may be overridden below */
310 pdraw
->have_back
= 0;
311 pdraw
->have_fake_front
= 0;
314 psc
->config
->configQueryi(psc
->driScreen
,
315 "vblank_mode", &vblank_mode
);
317 switch (vblank_mode
) {
318 case DRI_CONF_VBLANK_NEVER
:
319 case DRI_CONF_VBLANK_DEF_INTERVAL_0
:
320 pdraw
->swap_interval
= 0;
322 case DRI_CONF_VBLANK_DEF_INTERVAL_1
:
323 case DRI_CONF_VBLANK_ALWAYS_SYNC
:
325 pdraw
->swap_interval
= 1;
329 (void) __glXInitialize(psc
->base
.dpy
);
331 /* Create a new drawable */
333 (*psc
->image_driver
->createNewDrawable
) (psc
->driScreen
,
334 config
->driConfig
, pdraw
);
336 if (!pdraw
->driDrawable
) {
342 * Make sure server has the same swap interval we do for the new
345 if (psc
->vtable
.setSwapInterval
)
346 psc
->vtable
.setSwapInterval(&pdraw
->base
, pdraw
->swap_interval
);
352 * Process one Present event
355 dri3_handle_present_event(struct dri3_drawable
*priv
, xcb_present_generic_event_t
*ge
)
357 switch (ge
->evtype
) {
358 case XCB_PRESENT_CONFIGURE_NOTIFY
: {
359 xcb_present_configure_notify_event_t
*ce
= (void *) ge
;
361 priv
->width
= ce
->width
;
362 priv
->height
= ce
->height
;
365 case XCB_PRESENT_COMPLETE_NOTIFY
: {
366 xcb_present_complete_notify_event_t
*ce
= (void *) ge
;
368 if (ce
->kind
== XCB_PRESENT_COMPLETE_KIND_PIXMAP
)
369 priv
->present_event_serial
= ce
->serial
;
371 priv
->present_msc_event_serial
= ce
->serial
;
376 case XCB_PRESENT_EVENT_IDLE_NOTIFY
: {
377 xcb_present_idle_notify_event_t
*ie
= (void *) ge
;
380 for (b
= 0; b
< sizeof (priv
->buffers
) / sizeof (priv
->buffers
[0]); b
++) {
381 struct dri3_buffer
*buf
= priv
->buffers
[b
];
383 if (buf
&& buf
->pixmap
== ie
->pixmap
) {
395 dri3_wait_for_msc(__GLXDRIdrawable
*pdraw
, int64_t target_msc
, int64_t divisor
,
396 int64_t remainder
, int64_t *ust
, int64_t *msc
, int64_t *sbc
)
398 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->psc
->dpy
);
399 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
400 xcb_generic_event_t
*ev
;
401 xcb_present_generic_event_t
*ge
;
403 /* Ask for the an event for the target MSC */
404 ++priv
->present_msc_request_serial
;
405 xcb_present_notify_msc(c
,
406 priv
->base
.xDrawable
,
407 priv
->present_msc_request_serial
,
414 /* Wait for the event */
415 if (priv
->special_event
) {
416 while (priv
->present_msc_request_serial
!= priv
->present_msc_event_serial
) {
417 ev
= xcb_wait_for_special_event(c
, priv
->special_event
);
421 dri3_handle_present_event(priv
, ge
);
433 dri3_drawable_get_msc(struct glx_screen
*psc
, __GLXDRIdrawable
*pdraw
,
434 int64_t *ust
, int64_t *msc
, int64_t *sbc
)
436 return dri3_wait_for_msc(pdraw
, 0, 0, 0, ust
, msc
,sbc
);
439 /** dri3_wait_for_sbc
441 * Wait for the swap buffer count to increase. The only way this
442 * can happen is if some other thread is doing swap buffers as
443 * we no longer share swap buffer counts with other processes.
445 * I'm not sure this is actually useful as such, and so this
446 * implementation is a kludge that just polls once a second
449 dri3_wait_for_sbc(__GLXDRIdrawable
*pdraw
, int64_t target_sbc
, int64_t *ust
,
450 int64_t *msc
, int64_t *sbc
)
452 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
454 while (priv
->sbc
< target_sbc
) {
457 return dri3_wait_for_msc(pdraw
, 0, 0, 0, ust
, msc
, sbc
);
461 * Asks the driver to flush any queued work necessary for serializing with the
462 * X command stream, and optionally the slightly more strict requirement of
463 * glFlush() equivalence (which would require flushing even if nothing had
464 * been drawn to a window system framebuffer, for example).
467 dri3_flush(struct dri3_screen
*psc
,
468 struct dri3_drawable
*draw
,
470 enum __DRI2throttleReason throttle_reason
)
472 struct glx_context
*gc
= __glXGetCurrentContext();
475 struct dri3_context
*dri3Ctx
= (struct dri3_context
*)gc
;
477 (*psc
->f
->flush_with_flags
)(dri3Ctx
->driContext
, draw
->driDrawable
, flags
, throttle_reason
);
481 static xcb_gcontext_t
482 dri3_drawable_gc(struct dri3_drawable
*priv
)
486 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
490 (priv
->gc
= xcb_generate_id(c
)),
491 priv
->base
.xDrawable
,
492 XCB_GC_GRAPHICS_EXPOSURES
,
498 static struct dri3_buffer
*
499 dri3_back_buffer(struct dri3_drawable
*priv
)
501 return priv
->buffers
[DRI3_BACK_ID(priv
->cur_back
)];
504 static struct dri3_buffer
*
505 dri3_fake_front_buffer(struct dri3_drawable
*priv
)
507 return priv
->buffers
[DRI3_FRONT_ID
];
511 dri3_copy_area (xcb_connection_t
*c
/**< */,
512 xcb_drawable_t src_drawable
/**< */,
513 xcb_drawable_t dst_drawable
/**< */,
514 xcb_gcontext_t gc
/**< */,
515 int16_t src_x
/**< */,
516 int16_t src_y
/**< */,
517 int16_t dst_x
/**< */,
518 int16_t dst_y
/**< */,
519 uint16_t width
/**< */,
520 uint16_t height
/**< */)
522 xcb_void_cookie_t cookie
;
524 cookie
= xcb_copy_area_checked(c
,
534 xcb_discard_reply(c
, cookie
.sequence
);
538 dri3_copy_sub_buffer(__GLXDRIdrawable
*pdraw
, int x
, int y
,
539 int width
, int height
,
542 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
543 struct dri3_screen
*psc
= (struct dri3_screen
*) pdraw
->psc
;
544 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
545 struct dri3_buffer
*back
= dri3_back_buffer(priv
);
549 /* Check we have the right attachments */
550 if (!priv
->have_back
|| priv
->is_pixmap
)
553 flags
= __DRI2_FLUSH_DRAWABLE
;
555 flags
|= __DRI2_FLUSH_CONTEXT
;
556 dri3_flush(psc
, priv
, flags
, __DRI2_THROTTLE_SWAPBUFFER
);
558 y
= priv
->height
- y
- height
;
560 dri3_fence_reset(c
, back
);
562 dri3_back_buffer(priv
)->pixmap
,
563 priv
->base
.xDrawable
,
564 dri3_drawable_gc(priv
),
565 x
, y
, x
, y
, width
, height
);
566 dri3_fence_trigger(c
, back
);
567 /* Refresh the fake front (if present) after we just damaged the real
570 if (priv
->have_fake_front
) {
571 dri3_fence_reset(c
, dri3_fake_front_buffer(priv
));
573 dri3_back_buffer(priv
)->pixmap
,
574 dri3_fake_front_buffer(priv
)->pixmap
,
575 dri3_drawable_gc(priv
),
576 x
, y
, x
, y
, width
, height
);
577 dri3_fence_trigger(c
, dri3_fake_front_buffer(priv
));
578 dri3_fence_await(c
, dri3_fake_front_buffer(priv
));
580 dri3_fence_await(c
, back
);
584 dri3_copy_drawable(struct dri3_drawable
*priv
, Drawable dest
, Drawable src
)
586 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
587 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
589 dri3_flush(psc
, priv
, __DRI2_FLUSH_DRAWABLE
, 0);
591 dri3_fence_reset(c
, dri3_fake_front_buffer(priv
));
594 dri3_drawable_gc(priv
),
595 0, 0, 0, 0, priv
->width
, priv
->height
);
596 dri3_fence_trigger(c
, dri3_fake_front_buffer(priv
));
597 dri3_fence_await(c
, dri3_fake_front_buffer(priv
));
601 dri3_wait_x(struct glx_context
*gc
)
603 struct dri3_drawable
*priv
= (struct dri3_drawable
*)
604 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
606 if (priv
== NULL
|| !priv
->have_fake_front
)
609 dri3_copy_drawable(priv
, dri3_fake_front_buffer(priv
)->pixmap
, priv
->base
.xDrawable
);
613 dri3_wait_gl(struct glx_context
*gc
)
615 struct dri3_drawable
*priv
= (struct dri3_drawable
*)
616 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
618 if (priv
== NULL
|| !priv
->have_fake_front
)
621 dri3_copy_drawable(priv
, priv
->base
.xDrawable
, dri3_fake_front_buffer(priv
)->pixmap
);
625 * Called by the driver when it needs to update the real front buffer with the
626 * contents of its fake front buffer.
629 dri3_flush_front_buffer(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
631 struct glx_context
*gc
;
632 struct dri3_drawable
*pdraw
= loaderPrivate
;
633 struct dri3_screen
*psc
;
638 if (!pdraw
->base
.psc
)
641 psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
643 (void) __glXInitialize(psc
->base
.dpy
);
645 gc
= __glXGetCurrentContext();
647 dri3_flush(psc
, pdraw
, __DRI2_FLUSH_DRAWABLE
, __DRI2_THROTTLE_FLUSHFRONT
);
653 dri3_cpp_for_format(uint32_t format
) {
655 case __DRI_IMAGE_FORMAT_R8
:
657 case __DRI_IMAGE_FORMAT_RGB565
:
658 case __DRI_IMAGE_FORMAT_GR88
:
660 case __DRI_IMAGE_FORMAT_XRGB8888
:
661 case __DRI_IMAGE_FORMAT_ARGB8888
:
662 case __DRI_IMAGE_FORMAT_ABGR8888
:
663 case __DRI_IMAGE_FORMAT_XBGR8888
:
664 case __DRI_IMAGE_FORMAT_XRGB2101010
:
665 case __DRI_IMAGE_FORMAT_ARGB2101010
:
666 case __DRI_IMAGE_FORMAT_SARGB8
:
668 case __DRI_IMAGE_FORMAT_NONE
:
675 /** dri3_alloc_render_buffer
677 * Use the driver createImage function to construct a __DRIimage, then
678 * get a file descriptor for that and create an X pixmap from that
680 * Allocate an xshmfence for synchronization
682 static struct dri3_buffer
*
683 dri3_alloc_render_buffer(struct glx_screen
*glx_screen
, Drawable draw
,
684 unsigned int format
, int width
, int height
, int depth
)
686 struct dri3_screen
*psc
= (struct dri3_screen
*) glx_screen
;
687 Display
*dpy
= glx_screen
->dpy
;
688 struct dri3_buffer
*buffer
;
689 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
691 xcb_sync_fence_t sync_fence
;
692 struct xshmfence
*shm_fence
;
693 int buffer_fd
, fence_fd
;
696 /* Create an xshmfence object and
697 * prepare to send that to the X server
700 fence_fd
= xshmfence_alloc_shm();
703 shm_fence
= xshmfence_map_shm(fence_fd
);
704 if (shm_fence
== NULL
)
707 /* Allocate the image from the driver
709 buffer
= calloc(1, sizeof (struct dri3_buffer
));
713 buffer
->cpp
= dri3_cpp_for_format(format
);
717 buffer
->image
= (*psc
->image
->createImage
) (psc
->driScreen
,
720 __DRI_IMAGE_USE_SHARE
|__DRI_IMAGE_USE_SCANOUT
,
727 /* X wants the stride, so ask the image for it
729 if (!(*psc
->image
->queryImage
)(buffer
->image
, __DRI_IMAGE_ATTRIB_STRIDE
, &stride
))
730 goto no_buffer_attrib
;
732 buffer
->pitch
= stride
;
734 if (!(*psc
->image
->queryImage
)(buffer
->image
, __DRI_IMAGE_ATTRIB_FD
, &buffer_fd
))
735 goto no_buffer_attrib
;
737 xcb_dri3_pixmap_from_buffer(c
,
738 (pixmap
= xcb_generate_id(c
)),
741 width
, height
, buffer
->pitch
,
742 depth
, buffer
->cpp
* 8,
745 xcb_dri3_fence_from_fd(c
,
747 (sync_fence
= xcb_generate_id(c
)),
751 buffer
->pixmap
= pixmap
;
752 buffer
->own_pixmap
= true;
753 buffer
->sync_fence
= sync_fence
;
754 buffer
->shm_fence
= shm_fence
;
755 buffer
->width
= width
;
756 buffer
->height
= height
;
758 /* Mark the buffer as idle
760 dri3_fence_set(buffer
);
765 (*psc
->image
->destroyImage
)(buffer
->image
);
769 xshmfence_unmap_shm(shm_fence
);
775 /** dri3_free_render_buffer
777 * Free everything associated with one render buffer including pixmap, fence
778 * stuff and the driver image
781 dri3_free_render_buffer(struct dri3_drawable
*pdraw
, struct dri3_buffer
*buffer
)
783 struct dri3_screen
*psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
784 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->base
.psc
->dpy
);
786 if (buffer
->own_pixmap
)
787 xcb_free_pixmap(c
, buffer
->pixmap
);
788 xcb_sync_destroy_fence(c
, buffer
->sync_fence
);
789 xshmfence_unmap_shm(buffer
->shm_fence
);
790 (*psc
->image
->destroyImage
)(buffer
->image
);
795 /** dri3_flush_present_events
797 * Process any present events that have been received from the X server
800 dri3_flush_present_events(struct dri3_drawable
*priv
)
802 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
804 /* Check to see if any configuration changes have occurred
805 * since we were last invoked
807 if (priv
->special_event
) {
808 xcb_generic_event_t
*ev
;
810 while ((ev
= xcb_poll_for_special_event(c
, priv
->special_event
)) != NULL
) {
811 xcb_present_generic_event_t
*ge
= (void *) ev
;
812 dri3_handle_present_event(priv
, ge
);
817 /** dri3_update_drawable
819 * Called the first time we use the drawable and then
820 * after we receive present configure notify events to
821 * track the geometry of the drawable
824 dri3_update_drawable(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
826 struct dri3_drawable
*priv
= loaderPrivate
;
827 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
829 /* First time through, go get the current drawable geometry
831 if (priv
->width
== 0 || priv
->height
== 0 || priv
->depth
== 0) {
832 xcb_get_geometry_cookie_t geom_cookie
;
833 xcb_get_geometry_reply_t
*geom_reply
;
834 xcb_void_cookie_t cookie
;
835 xcb_generic_error_t
*error
;
837 /* Try to select for input on the window.
839 * If the drawable is a window, this will get our events
842 * Otherwise, we'll get a BadWindow error back from this request which
843 * will let us know that the drawable is a pixmap instead.
847 cookie
= xcb_present_select_input_checked(c
,
848 (priv
->eid
= xcb_generate_id(c
)),
849 priv
->base
.xDrawable
,
850 XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY
|
851 XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY
|
852 XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY
);
854 /* Create an XCB event queue to hold present events outside of the usual
855 * application event queue
857 priv
->special_event
= xcb_register_for_special_xge(c
,
862 geom_cookie
= xcb_get_geometry(c
, priv
->base
.xDrawable
);
864 geom_reply
= xcb_get_geometry_reply(c
, geom_cookie
, NULL
);
869 priv
->width
= geom_reply
->width
;
870 priv
->height
= geom_reply
->height
;
871 priv
->depth
= geom_reply
->depth
;
872 priv
->is_pixmap
= false;
876 /* Check to see if our select input call failed. If it failed with a
877 * BadWindow error, then assume the drawable is a pixmap. Destroy the
878 * special event queue created above and mark the drawable as a pixmap
881 error
= xcb_request_check(c
, cookie
);
884 if (error
->error_code
!= BadWindow
) {
888 priv
->is_pixmap
= true;
889 xcb_unregister_for_special_event(c
, priv
->special_event
);
890 priv
->special_event
= NULL
;
893 dri3_flush_present_events(priv
);
897 /* the DRIimage createImage function takes __DRI_IMAGE_FORMAT codes, while
898 * the createImageFromFds call takes __DRI_IMAGE_FOURCC codes. To avoid
899 * complete confusion, just deal in __DRI_IMAGE_FORMAT codes for now and
900 * translate to __DRI_IMAGE_FOURCC codes in the call to createImageFromFds
903 image_format_to_fourcc(int format
)
906 /* Convert from __DRI_IMAGE_FORMAT to __DRI_IMAGE_FOURCC (sigh) */
908 case __DRI_IMAGE_FORMAT_RGB565
: return __DRI_IMAGE_FOURCC_RGB565
;
909 case __DRI_IMAGE_FORMAT_XRGB8888
: return __DRI_IMAGE_FOURCC_XRGB8888
;
910 case __DRI_IMAGE_FORMAT_ARGB8888
: return __DRI_IMAGE_FOURCC_ARGB8888
;
911 case __DRI_IMAGE_FORMAT_ABGR8888
: return __DRI_IMAGE_FOURCC_ABGR8888
;
912 case __DRI_IMAGE_FORMAT_XBGR8888
: return __DRI_IMAGE_FOURCC_XBGR8888
;
917 /** dri3_get_pixmap_buffer
919 * Get the DRM object for a pixmap from the X server and
920 * wrap that with a __DRIimage structure using createImageFromFds
922 static struct dri3_buffer
*
923 dri3_get_pixmap_buffer(__DRIdrawable
*driDrawable
,
925 enum dri3_buffer_type buffer_type
,
928 struct dri3_drawable
*pdraw
= loaderPrivate
;
929 int buf_id
= dri3_pixmap_buf_id(buffer_type
);
930 struct dri3_buffer
*buffer
= pdraw
->buffers
[buf_id
];
932 xcb_dri3_buffer_from_pixmap_cookie_t bp_cookie
;
933 xcb_dri3_buffer_from_pixmap_reply_t
*bp_reply
;
936 struct dri3_screen
*psc
;
938 xcb_sync_fence_t sync_fence
;
939 struct xshmfence
*shm_fence
;
941 __DRIimage
*image_planar
;
947 pixmap
= pdraw
->base
.xDrawable
;
948 psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
950 c
= XGetXCBConnection(dpy
);
952 buffer
= calloc(1, sizeof (struct dri3_buffer
));
956 fence_fd
= xshmfence_alloc_shm();
959 shm_fence
= xshmfence_map_shm(fence_fd
);
960 if (shm_fence
== NULL
) {
965 xcb_dri3_fence_from_fd(c
,
967 (sync_fence
= xcb_generate_id(c
)),
971 /* Get an FD for the pixmap object
973 bp_cookie
= xcb_dri3_buffer_from_pixmap(c
, pixmap
);
974 bp_reply
= xcb_dri3_buffer_from_pixmap_reply(c
, bp_cookie
, NULL
);
977 fds
= xcb_dri3_buffer_from_pixmap_reply_fds(c
, bp_reply
);
979 stride
= bp_reply
->stride
;
982 /* createImageFromFds creates a wrapper __DRIimage structure which
983 * can deal with multiple planes for things like Yuv images. So, once
984 * we've gotten the planar wrapper, pull the single plane out of it and
985 * discard the wrapper.
987 image_planar
= (*psc
->image
->createImageFromFds
) (psc
->driScreen
,
990 image_format_to_fourcc(format
),
992 &stride
, &offset
, buffer
);
997 buffer
->image
= (*psc
->image
->fromPlanar
)(image_planar
, 0, buffer
);
999 (*psc
->image
->destroyImage
)(image_planar
);
1004 buffer
->pixmap
= pixmap
;
1005 buffer
->own_pixmap
= false;
1006 buffer
->width
= bp_reply
->width
;
1007 buffer
->height
= bp_reply
->height
;
1008 buffer
->buffer_type
= buffer_type
;
1009 buffer
->shm_fence
= shm_fence
;
1010 buffer
->sync_fence
= sync_fence
;
1012 pdraw
->buffers
[buf_id
] = buffer
;
1016 xcb_sync_destroy_fence(c
, sync_fence
);
1017 xshmfence_unmap_shm(shm_fence
);
1026 * Find an idle back buffer. If there isn't one, then
1027 * wait for a present idle notify event from the X server
1030 dri3_find_back(xcb_connection_t
*c
, struct dri3_drawable
*priv
)
1033 xcb_generic_event_t
*ev
;
1034 xcb_present_generic_event_t
*ge
;
1038 for (b
= 0; b
< DRI3_NUM_BACK
; b
++) {
1039 int id
= DRI3_BACK_ID(b
);
1040 struct dri3_buffer
*buffer
= priv
->buffers
[id
];
1047 ev
= xcb_wait_for_special_event(c
, priv
->special_event
);
1051 dri3_handle_present_event(priv
, ge
);
1057 * Find a front or back buffer, allocating new ones as necessary
1059 static struct dri3_buffer
*
1060 dri3_get_buffer(__DRIdrawable
*driDrawable
,
1061 unsigned int format
,
1062 enum dri3_buffer_type buffer_type
,
1063 void *loaderPrivate
)
1065 struct dri3_drawable
*priv
= loaderPrivate
;
1066 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
1067 struct dri3_buffer
*buffer
;
1070 if (buffer_type
== dri3_buffer_back
) {
1071 int back
= dri3_find_back(c
, priv
);
1076 priv
->cur_back
= back
;
1077 buf_id
= DRI3_BACK_ID(priv
->cur_back
);
1079 buf_id
= DRI3_FRONT_ID
;
1082 buffer
= priv
->buffers
[buf_id
];
1084 /* Allocate a new buffer if there isn't an old one, or if that
1085 * old one is the wrong size
1087 if (!buffer
|| buffer
->width
!= priv
->width
|| buffer
->height
!= priv
->height
) {
1088 struct dri3_buffer
*new_buffer
;
1090 /* Allocate the new buffers
1092 new_buffer
= dri3_alloc_render_buffer(priv
->base
.psc
,
1093 priv
->base
.xDrawable
,
1094 format
, priv
->width
, priv
->height
, priv
->depth
);
1098 /* When resizing, copy the contents of the old buffer, waiting for that
1099 * copy to complete using our fences before proceeding
1101 switch (buffer_type
) {
1102 case dri3_buffer_back
:
1104 dri3_fence_reset(c
, new_buffer
);
1105 dri3_fence_await(c
, buffer
);
1109 dri3_drawable_gc(priv
),
1110 0, 0, 0, 0, priv
->width
, priv
->height
);
1111 dri3_fence_trigger(c
, new_buffer
);
1112 dri3_free_render_buffer(priv
, buffer
);
1115 case dri3_buffer_front
:
1116 dri3_fence_reset(c
, new_buffer
);
1118 priv
->base
.xDrawable
,
1120 dri3_drawable_gc(priv
),
1121 0, 0, 0, 0, priv
->width
, priv
->height
);
1122 dri3_fence_trigger(c
, new_buffer
);
1125 buffer
= new_buffer
;
1126 buffer
->buffer_type
= buffer_type
;
1127 priv
->buffers
[buf_id
] = buffer
;
1129 dri3_fence_await(c
, buffer
);
1131 /* Return the requested buffer */
1135 /** dri3_free_buffers
1137 * Free the front bufffer or all of the back buffers. Used
1138 * when the application changes which buffers it needs
1141 dri3_free_buffers(__DRIdrawable
*driDrawable
,
1142 enum dri3_buffer_type buffer_type
,
1143 void *loaderPrivate
)
1145 struct dri3_drawable
*priv
= loaderPrivate
;
1146 struct dri3_buffer
*buffer
;
1151 switch (buffer_type
) {
1152 case dri3_buffer_back
:
1153 first_id
= DRI3_BACK_ID(0);
1154 n_id
= DRI3_NUM_BACK
;
1156 case dri3_buffer_front
:
1157 first_id
= DRI3_FRONT_ID
;
1161 for (buf_id
= first_id
; buf_id
< first_id
+ n_id
; buf_id
++) {
1162 buffer
= priv
->buffers
[buf_id
];
1164 dri3_free_render_buffer(priv
, buffer
);
1165 priv
->buffers
[buf_id
] = NULL
;
1170 /** dri3_get_buffers
1172 * The published buffer allocation API.
1173 * Returns all of the necessary buffers, allocating
1177 dri3_get_buffers(__DRIdrawable
*driDrawable
,
1178 unsigned int format
,
1180 void *loaderPrivate
,
1181 uint32_t buffer_mask
,
1182 struct __DRIimageList
*buffers
)
1184 struct dri3_drawable
*priv
= loaderPrivate
;
1185 struct dri3_buffer
*front
, *back
;
1187 buffers
->image_mask
= 0;
1188 buffers
->front
= NULL
;
1189 buffers
->back
= NULL
;
1194 if (!dri3_update_drawable(driDrawable
, loaderPrivate
))
1197 /* pixmaps always have front buffers */
1198 if (priv
->is_pixmap
)
1199 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1201 if (buffer_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1202 if (priv
->is_pixmap
)
1203 front
= dri3_get_pixmap_buffer(driDrawable
,
1208 front
= dri3_get_buffer(driDrawable
,
1216 dri3_free_buffers(driDrawable
, dri3_buffer_front
, loaderPrivate
);
1217 priv
->have_fake_front
= 0;
1220 if (buffer_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1221 back
= dri3_get_buffer(driDrawable
,
1227 priv
->have_back
= 1;
1229 dri3_free_buffers(driDrawable
, dri3_buffer_back
, loaderPrivate
);
1230 priv
->have_back
= 0;
1234 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1235 buffers
->front
= front
->image
;
1236 priv
->have_fake_front
= !priv
->is_pixmap
;
1240 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1241 buffers
->back
= back
->image
;
1244 priv
->stamp
= stamp
;
1249 /* The image loader extension record for DRI3
1251 static const __DRIimageLoaderExtension imageLoaderExtension
= {
1252 {__DRI_IMAGE_LOADER
, __DRI_IMAGE_LOADER_VERSION
},
1253 .getBuffers
= dri3_get_buffers
,
1254 .flushFrontBuffer
= dri3_flush_front_buffer
,
1257 /** dri3_swap_buffers
1259 * Make the current back buffer visible using the present extension
1262 dri3_swap_buffers(__GLXDRIdrawable
*pdraw
, int64_t target_msc
, int64_t divisor
,
1263 int64_t remainder
, Bool flush
)
1265 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1266 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1267 Display
*dpy
= priv
->base
.psc
->dpy
;
1268 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1269 int buf_id
= DRI3_BACK_ID(priv
->cur_back
);
1272 unsigned flags
= __DRI2_FLUSH_DRAWABLE
;
1274 flags
|= __DRI2_FLUSH_CONTEXT
;
1275 dri3_flush(psc
, priv
, flags
, __DRI2_THROTTLE_SWAPBUFFER
);
1277 dri3_flush_present_events(priv
);
1279 if (priv
->buffers
[buf_id
] && !priv
->is_pixmap
) {
1280 dri3_fence_reset(c
, priv
->buffers
[buf_id
]);
1282 /* Compute when we want the frame shown by taking the last known successful
1283 * MSC and adding in a swap interval for each outstanding swap request
1285 ++priv
->present_request_serial
;
1286 if (target_msc
== 0)
1287 target_msc
= priv
->msc
+ priv
->swap_interval
* (priv
->present_request_serial
- priv
->present_event_serial
);
1289 priv
->buffers
[buf_id
]->busy
= 1;
1290 xcb_present_pixmap(c
,
1291 priv
->base
.xDrawable
,
1292 priv
->buffers
[buf_id
]->pixmap
,
1293 priv
->present_request_serial
,
1298 None
, /* target_crtc */
1300 priv
->buffers
[buf_id
]->sync_fence
,
1301 XCB_PRESENT_OPTION_NONE
,
1304 remainder
, 0, NULL
);
1307 /* If there's a fake front, then copy the source back buffer
1308 * to the fake front to keep it up to date. This needs
1309 * to reset the fence and make future users block until
1310 * the X server is done copying the bits
1312 if (priv
->have_fake_front
) {
1313 dri3_fence_reset(c
, priv
->buffers
[DRI3_FRONT_ID
]);
1315 priv
->buffers
[buf_id
]->pixmap
,
1316 priv
->buffers
[DRI3_FRONT_ID
]->pixmap
,
1317 dri3_drawable_gc(priv
),
1318 0, 0, 0, 0, priv
->width
, priv
->height
);
1319 dri3_fence_trigger(c
, priv
->buffers
[DRI3_FRONT_ID
]);
1331 * Wrapper around xcb_dri3_open
1334 dri3_open(Display
*dpy
,
1338 xcb_dri3_open_cookie_t cookie
;
1339 xcb_dri3_open_reply_t
*reply
;
1340 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1341 xcb_generic_error_t
*error
;
1344 cookie
= xcb_dri3_open(c
,
1348 reply
= xcb_dri3_open_reply(c
, cookie
, &error
);
1352 if (reply
->nfd
!= 1) {
1357 fd
= xcb_dri3_open_reply_fds(c
, reply
)[0];
1358 fcntl(fd
, F_SETFD
, FD_CLOEXEC
);
1364 /** dri3_destroy_screen
1367 dri3_destroy_screen(struct glx_screen
*base
)
1369 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
1371 /* Free the direct rendering per screen data */
1372 (*psc
->core
->destroyScreen
) (psc
->driScreen
);
1373 driDestroyConfigs(psc
->driver_configs
);
1378 /** dri3_set_swap_interval
1380 * Record the application swap interval specification,
1383 dri3_set_swap_interval(__GLXDRIdrawable
*pdraw
, int interval
)
1385 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1386 GLint vblank_mode
= DRI_CONF_VBLANK_DEF_INTERVAL_1
;
1387 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1390 psc
->config
->configQueryi(psc
->driScreen
,
1391 "vblank_mode", &vblank_mode
);
1393 switch (vblank_mode
) {
1394 case DRI_CONF_VBLANK_NEVER
:
1396 return GLX_BAD_VALUE
;
1398 case DRI_CONF_VBLANK_ALWAYS_SYNC
:
1400 return GLX_BAD_VALUE
;
1406 priv
->swap_interval
= interval
;
1411 /** dri3_get_swap_interval
1413 * Return the stored swap interval
1416 dri3_get_swap_interval(__GLXDRIdrawable
*pdraw
)
1418 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1420 return priv
->swap_interval
;
1424 dri3_bind_tex_image(Display
* dpy
,
1425 GLXDrawable drawable
,
1426 int buffer
, const int *attrib_list
)
1428 struct glx_context
*gc
= __glXGetCurrentContext();
1429 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
1430 __GLXDRIdrawable
*base
= GetGLXDRIDrawable(dpy
, drawable
);
1431 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
1432 struct dri3_screen
*psc
;
1434 if (pdraw
!= NULL
) {
1435 psc
= (struct dri3_screen
*) base
->psc
;
1437 (*psc
->f
->invalidate
)(pdraw
->driDrawable
);
1441 (*psc
->texBuffer
->setTexBuffer2
) (pcp
->driContext
,
1442 pdraw
->base
.textureTarget
,
1443 pdraw
->base
.textureFormat
,
1444 pdraw
->driDrawable
);
1449 dri3_release_tex_image(Display
* dpy
, GLXDrawable drawable
, int buffer
)
1451 struct glx_context
*gc
= __glXGetCurrentContext();
1452 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
1453 __GLXDRIdrawable
*base
= GetGLXDRIDrawable(dpy
, drawable
);
1454 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
1455 struct dri3_screen
*psc
;
1457 if (pdraw
!= NULL
) {
1458 psc
= (struct dri3_screen
*) base
->psc
;
1460 if (psc
->texBuffer
->releaseTexBuffer
)
1461 (*psc
->texBuffer
->releaseTexBuffer
) (pcp
->driContext
,
1462 pdraw
->base
.textureTarget
,
1463 pdraw
->driDrawable
);
1467 static const struct glx_context_vtable dri3_context_vtable
= {
1468 dri3_destroy_context
,
1470 dri3_unbind_context
,
1474 dri3_bind_tex_image
,
1475 dri3_release_tex_image
,
1476 NULL
, /* get_proc_address */
1479 /** dri3_bind_extensions
1481 * Enable all of the extensions supported on DRI3
1484 dri3_bind_extensions(struct dri3_screen
*psc
, struct glx_display
* priv
,
1485 const char *driverName
)
1487 const __DRIextension
**extensions
;
1491 extensions
= psc
->core
->getExtensions(psc
->driScreen
);
1493 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_video_sync");
1494 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_swap_control");
1495 __glXEnableDirectExtension(&psc
->base
, "GLX_MESA_swap_control");
1496 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_make_current_read");
1499 * GLX_INTEL_swap_event is broken on the server side, where it's
1500 * currently unconditionally enabled. This completely breaks
1501 * systems running on drivers which don't support that extension.
1502 * There's no way to test for its presence on this side, so instead
1503 * of disabling it unconditionally, just disable it for drivers
1504 * which are known to not support it, or for DDX drivers supporting
1505 * only an older (pre-ScheduleSwap) version of DRI2.
1507 * This is a hack which is required until:
1508 * http://lists.x.org/archives/xorg-devel/2013-February/035449.html
1509 * is merged and updated xserver makes it's way into distros:
1511 // if (pdp->swapAvailable && strcmp(driverName, "vmwgfx") != 0) {
1512 // __glXEnableDirectExtension(&psc->base, "GLX_INTEL_swap_event");
1515 mask
= psc
->image_driver
->getAPIMask(psc
->driScreen
);
1517 __glXEnableDirectExtension(&psc
->base
, "GLX_ARB_create_context");
1518 __glXEnableDirectExtension(&psc
->base
, "GLX_ARB_create_context_profile");
1520 if ((mask
& (1 << __DRI_API_GLES2
)) != 0)
1521 __glXEnableDirectExtension(&psc
->base
,
1522 "GLX_EXT_create_context_es2_profile");
1524 for (i
= 0; extensions
[i
]; i
++) {
1525 if ((strcmp(extensions
[i
]->name
, __DRI_TEX_BUFFER
) == 0)) {
1526 psc
->texBuffer
= (__DRItexBufferExtension
*) extensions
[i
];
1527 __glXEnableDirectExtension(&psc
->base
, "GLX_EXT_texture_from_pixmap");
1530 if ((strcmp(extensions
[i
]->name
, __DRI2_FLUSH
) == 0)) {
1531 psc
->f
= (__DRI2flushExtension
*) extensions
[i
];
1532 /* internal driver extension, no GL extension exposed */
1535 if ((strcmp(extensions
[i
]->name
, __DRI2_CONFIG_QUERY
) == 0))
1536 psc
->config
= (__DRI2configQueryExtension
*) extensions
[i
];
1538 if (strcmp(extensions
[i
]->name
, __DRI2_ROBUSTNESS
) == 0)
1539 __glXEnableDirectExtension(&psc
->base
,
1540 "GLX_ARB_create_context_robustness");
1544 static const struct glx_screen_vtable dri3_screen_vtable
= {
1545 dri3_create_context
,
1546 dri3_create_context_attribs
1549 /** dri3_create_screen
1551 * Initialize DRI3 on the specified screen.
1553 * Opens the DRI device, locates the appropriate DRI driver
1556 * Checks to see if the driver supports the necessary extensions
1558 * Initializes the driver for the screen and sets up our structures
1561 static struct glx_screen
*
1562 dri3_create_screen(int screen
, struct glx_display
* priv
)
1564 xcb_connection_t
*c
= XGetXCBConnection(priv
->dpy
);
1565 const __DRIconfig
**driver_configs
;
1566 const __DRIextension
**extensions
;
1567 const struct dri3_display
*const pdp
= (struct dri3_display
*)
1569 struct dri3_screen
*psc
;
1570 __GLXDRIscreen
*psp
;
1571 struct glx_config
*configs
= NULL
, *visuals
= NULL
;
1572 char *driverName
, *deviceName
;
1575 psc
= calloc(1, sizeof *psc
);
1581 if (!glx_screen_init(&psc
->base
, screen
, priv
)) {
1586 psc
->fd
= dri3_open(priv
->dpy
, RootWindow(priv
->dpy
, screen
), None
);
1588 int conn_error
= xcb_connection_has_error(c
);
1590 glx_screen_cleanup(&psc
->base
);
1592 InfoMessageF("screen %d does not appear to be DRI3 capable\n", screen
);
1595 ErrorMessageF("Connection closed during DRI3 initialization failure");
1601 driverName
= loader_get_driver_for_fd(psc
->fd
, 0);
1603 ErrorMessageF("No driver found\n");
1607 psc
->driver
= driOpenDriver(driverName
);
1608 if (psc
->driver
== NULL
) {
1609 ErrorMessageF("driver pointer missing\n");
1613 extensions
= driGetDriverExtensions(psc
->driver
, driverName
);
1614 if (extensions
== NULL
)
1617 for (i
= 0; extensions
[i
]; i
++) {
1618 if (strcmp(extensions
[i
]->name
, __DRI_CORE
) == 0)
1619 psc
->core
= (__DRIcoreExtension
*) extensions
[i
];
1620 if (strcmp(extensions
[i
]->name
, __DRI_IMAGE_DRIVER
) == 0)
1621 psc
->image_driver
= (__DRIimageDriverExtension
*) extensions
[i
];
1625 if (psc
->core
== NULL
) {
1626 ErrorMessageF("core dri driver extension not found\n");
1630 if (psc
->image_driver
== NULL
) {
1631 ErrorMessageF("image driver extension not found\n");
1636 psc
->image_driver
->createNewScreen2(screen
, psc
->fd
,
1637 (const __DRIextension
**)
1638 &pdp
->loader_extensions
[0],
1640 &driver_configs
, psc
);
1642 if (psc
->driScreen
== NULL
) {
1643 ErrorMessageF("failed to create dri screen\n");
1647 extensions
= (*psc
->core
->getExtensions
)(psc
->driScreen
);
1649 for (i
= 0; extensions
[i
]; i
++) {
1650 if (strcmp(extensions
[i
]->name
, __DRI_IMAGE
) == 0)
1651 psc
->image
= (__DRIimageExtension
*) extensions
[i
];
1654 if (psc
->image
== NULL
) {
1655 ErrorMessageF("image extension not found\n");
1659 dri3_bind_extensions(psc
, priv
, driverName
);
1661 if (!psc
->f
|| psc
->f
->base
.version
< 4) {
1662 ErrorMessageF("Version 4 or later of flush extension not found\n");
1666 if (!psc
->texBuffer
|| psc
->texBuffer
->base
.version
< 2 ||
1667 !psc
->texBuffer
->setTexBuffer2
)
1669 ErrorMessageF("Version 2 or later of texBuffer extension not found\n");
1673 configs
= driConvertConfigs(psc
->core
, psc
->base
.configs
, driver_configs
);
1674 visuals
= driConvertConfigs(psc
->core
, psc
->base
.visuals
, driver_configs
);
1676 if (!configs
|| !visuals
)
1679 glx_config_destroy_list(psc
->base
.configs
);
1680 psc
->base
.configs
= configs
;
1681 glx_config_destroy_list(psc
->base
.visuals
);
1682 psc
->base
.visuals
= visuals
;
1684 psc
->driver_configs
= driver_configs
;
1686 psc
->base
.vtable
= &dri3_screen_vtable
;
1688 psc
->base
.driScreen
= psp
;
1689 psp
->destroyScreen
= dri3_destroy_screen
;
1690 psp
->createDrawable
= dri3_create_drawable
;
1691 psp
->swapBuffers
= dri3_swap_buffers
;
1693 psp
->getDrawableMSC
= dri3_drawable_get_msc
;
1694 psp
->waitForMSC
= dri3_wait_for_msc
;
1695 psp
->waitForSBC
= dri3_wait_for_sbc
;
1696 psp
->setSwapInterval
= dri3_set_swap_interval
;
1697 psp
->getSwapInterval
= dri3_get_swap_interval
;
1698 __glXEnableDirectExtension(&psc
->base
, "GLX_OML_sync_control");
1700 psp
->copySubBuffer
= dri3_copy_sub_buffer
;
1701 __glXEnableDirectExtension(&psc
->base
, "GLX_MESA_copy_sub_buffer");
1709 CriticalErrorMessageF("failed to load driver: %s\n", driverName
);
1712 glx_config_destroy_list(configs
);
1714 glx_config_destroy_list(visuals
);
1716 psc
->core
->destroyScreen(psc
->driScreen
);
1717 psc
->driScreen
= NULL
;
1721 dlclose(psc
->driver
);
1725 glx_screen_cleanup(&psc
->base
);
1731 /** dri_destroy_display
1733 * Called from __glXFreeDisplayPrivate.
1736 dri3_destroy_display(__GLXDRIdisplay
* dpy
)
1741 /** dri3_create_display
1743 * Allocate, initialize and return a __DRIdisplayPrivate object.
1744 * This is called from __glXInitialize() when we are given a new
1745 * display pointer. This is public to that function, but hidden from
1748 _X_HIDDEN __GLXDRIdisplay
*
1749 dri3_create_display(Display
* dpy
)
1751 struct dri3_display
*pdp
;
1753 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1754 xcb_dri3_query_version_cookie_t dri3_cookie
;
1755 xcb_dri3_query_version_reply_t
*dri3_reply
;
1756 xcb_present_query_version_cookie_t present_cookie
;
1757 xcb_present_query_version_reply_t
*present_reply
;
1758 xcb_generic_error_t
*error
;
1759 const xcb_query_extension_reply_t
*extension
;
1761 xcb_prefetch_extension_data(c
, &xcb_dri3_id
);
1762 xcb_prefetch_extension_data(c
, &xcb_present_id
);
1764 extension
= xcb_get_extension_data(c
, &xcb_dri3_id
);
1765 if (!(extension
&& extension
->present
))
1768 extension
= xcb_get_extension_data(c
, &xcb_present_id
);
1769 if (!(extension
&& extension
->present
))
1772 dri3_cookie
= xcb_dri3_query_version(c
,
1773 XCB_DRI3_MAJOR_VERSION
,
1774 XCB_DRI3_MINOR_VERSION
);
1777 present_cookie
= xcb_present_query_version(c
,
1778 XCB_PRESENT_MAJOR_VERSION
,
1779 XCB_PRESENT_MINOR_VERSION
);
1781 pdp
= malloc(sizeof *pdp
);
1785 dri3_reply
= xcb_dri3_query_version_reply(c
, dri3_cookie
, &error
);
1791 pdp
->dri3Major
= dri3_reply
->major_version
;
1792 pdp
->dri3Minor
= dri3_reply
->minor_version
;
1795 present_reply
= xcb_present_query_version_reply(c
, present_cookie
, &error
);
1796 if (!present_reply
) {
1800 pdp
->presentMajor
= present_reply
->major_version
;
1801 pdp
->presentMinor
= present_reply
->minor_version
;
1803 pdp
->base
.destroyDisplay
= dri3_destroy_display
;
1804 pdp
->base
.createScreen
= dri3_create_screen
;
1806 loader_set_logger(ErrorMessageF
);
1809 pdp
->loader_extensions
[i
++] = &imageLoaderExtension
.base
;
1811 pdp
->loader_extensions
[i
++] = &systemTimeExtension
.base
;
1813 pdp
->loader_extensions
[i
++] = NULL
;
1821 #endif /* GLX_DIRECT_RENDERING */