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>
68 #include "glxclient.h"
72 #include <sys/types.h>
76 #include "dri_common.h"
77 #include "dri3_priv.h"
81 static const struct glx_context_vtable dri3_context_vtable
;
84 dri3_fence_reset(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
86 xshmfence_reset(buffer
->shm_fence
);
90 dri3_fence_set(struct dri3_buffer
*buffer
)
92 xshmfence_trigger(buffer
->shm_fence
);
96 dri3_fence_trigger(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
98 xcb_sync_trigger_fence(c
, buffer
->sync_fence
);
102 dri3_fence_await(xcb_connection_t
*c
, struct dri3_buffer
*buffer
)
105 xshmfence_await(buffer
->shm_fence
);
109 dri3_fence_triggered(struct dri3_buffer
*buffer
)
111 return xshmfence_query(buffer
->shm_fence
);
115 dri3_destroy_context(struct glx_context
*context
)
117 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
118 struct dri3_screen
*psc
= (struct dri3_screen
*) context
->psc
;
120 driReleaseDrawables(&pcp
->base
);
122 free((char *) context
->extensions
);
124 (*psc
->core
->destroyContext
) (pcp
->driContext
);
130 dri3_bind_context(struct glx_context
*context
, struct glx_context
*old
,
131 GLXDrawable draw
, GLXDrawable read
)
133 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
134 struct dri3_screen
*psc
= (struct dri3_screen
*) pcp
->base
.psc
;
135 struct dri3_drawable
*pdraw
, *pread
;
137 pdraw
= (struct dri3_drawable
*) driFetchDrawable(context
, draw
);
138 pread
= (struct dri3_drawable
*) driFetchDrawable(context
, read
);
140 driReleaseDrawables(&pcp
->base
);
142 if (pdraw
== NULL
|| pread
== NULL
)
143 return GLXBadDrawable
;
145 if (!(*psc
->core
->bindContext
) (pcp
->driContext
,
146 pdraw
->driDrawable
, pread
->driDrawable
))
147 return GLXBadContext
;
153 dri3_unbind_context(struct glx_context
*context
, struct glx_context
*new)
155 struct dri3_context
*pcp
= (struct dri3_context
*) context
;
156 struct dri3_screen
*psc
= (struct dri3_screen
*) pcp
->base
.psc
;
158 (*psc
->core
->unbindContext
) (pcp
->driContext
);
161 static struct glx_context
*
162 dri3_create_context_attribs(struct glx_screen
*base
,
163 struct glx_config
*config_base
,
164 struct glx_context
*shareList
,
165 unsigned num_attribs
,
166 const uint32_t *attribs
,
169 struct dri3_context
*pcp
= NULL
;
170 struct dri3_context
*pcp_shared
= NULL
;
171 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
172 __GLXDRIconfigPrivate
*config
= (__GLXDRIconfigPrivate
*) config_base
;
173 __DRIcontext
*shared
= NULL
;
175 uint32_t minor_ver
= 1;
176 uint32_t major_ver
= 2;
179 int reset
= __DRI_CTX_RESET_NO_NOTIFICATION
;
180 uint32_t ctx_attribs
[2 * 5];
181 unsigned num_ctx_attribs
= 0;
182 uint32_t render_type
;
184 /* Remap the GLX tokens to DRI2 tokens.
186 if (!dri2_convert_glx_attribs(num_attribs
, attribs
,
187 &major_ver
, &minor_ver
,
188 &render_type
, &flags
, &api
,
192 /* Check the renderType value */
193 if (!validate_renderType_against_config(config_base
, render_type
))
197 pcp_shared
= (struct dri3_context
*) shareList
;
198 shared
= pcp_shared
->driContext
;
201 pcp
= calloc(1, sizeof *pcp
);
203 *error
= __DRI_CTX_ERROR_NO_MEMORY
;
207 if (!glx_context_init(&pcp
->base
, &psc
->base
, &config
->base
))
210 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_MAJOR_VERSION
;
211 ctx_attribs
[num_ctx_attribs
++] = major_ver
;
212 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_MINOR_VERSION
;
213 ctx_attribs
[num_ctx_attribs
++] = minor_ver
;
215 /* Only send a value when the non-default value is requested. By doing
216 * this we don't have to check the driver's DRI3 version before sending the
219 if (reset
!= __DRI_CTX_RESET_NO_NOTIFICATION
) {
220 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_RESET_STRATEGY
;
221 ctx_attribs
[num_ctx_attribs
++] = reset
;
225 ctx_attribs
[num_ctx_attribs
++] = __DRI_CTX_ATTRIB_FLAGS
;
227 /* The current __DRI_CTX_FLAG_* values are identical to the
228 * GLX_CONTEXT_*_BIT values.
230 ctx_attribs
[num_ctx_attribs
++] = flags
;
234 (*psc
->image_driver
->createContextAttribs
) (psc
->driScreen
,
243 if (pcp
->driContext
== NULL
)
246 pcp
->base
.vtable
= &dri3_context_vtable
;
256 static struct glx_context
*
257 dri3_create_context(struct glx_screen
*base
,
258 struct glx_config
*config_base
,
259 struct glx_context
*shareList
, int renderType
)
263 return dri3_create_context_attribs(base
, config_base
, shareList
,
268 dri3_free_render_buffer(struct dri3_drawable
*pdraw
, struct dri3_buffer
*buffer
);
271 dri3_update_num_back(struct dri3_drawable
*priv
)
274 if (priv
->flipping
) {
275 if (!priv
->is_pixmap
&& !(priv
->present_capabilities
& XCB_PRESENT_CAPABILITY_ASYNC
))
279 if (priv
->swap_interval
== 0)
284 dri3_destroy_drawable(__GLXDRIdrawable
*base
)
286 struct dri3_screen
*psc
= (struct dri3_screen
*) base
->psc
;
287 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
288 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->base
.psc
->dpy
);
291 (*psc
->core
->destroyDrawable
) (pdraw
->driDrawable
);
293 for (i
= 0; i
< DRI3_NUM_BUFFERS
; i
++) {
294 if (pdraw
->buffers
[i
])
295 dri3_free_render_buffer(pdraw
, pdraw
->buffers
[i
]);
298 if (pdraw
->special_event
)
299 xcb_unregister_for_special_event(c
, pdraw
->special_event
);
303 static __GLXDRIdrawable
*
304 dri3_create_drawable(struct glx_screen
*base
, XID xDrawable
,
305 GLXDrawable drawable
, struct glx_config
*config_base
)
307 struct dri3_drawable
*pdraw
;
308 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
309 __GLXDRIconfigPrivate
*config
= (__GLXDRIconfigPrivate
*) config_base
;
310 GLint vblank_mode
= DRI_CONF_VBLANK_DEF_INTERVAL_1
;
312 pdraw
= calloc(1, sizeof(*pdraw
));
316 pdraw
->base
.destroyDrawable
= dri3_destroy_drawable
;
317 pdraw
->base
.xDrawable
= xDrawable
;
318 pdraw
->base
.drawable
= drawable
;
319 pdraw
->base
.psc
= &psc
->base
;
320 pdraw
->swap_interval
= 1; /* default may be overridden below */
321 pdraw
->have_back
= 0;
322 pdraw
->have_fake_front
= 0;
325 psc
->config
->configQueryi(psc
->driScreen
,
326 "vblank_mode", &vblank_mode
);
328 switch (vblank_mode
) {
329 case DRI_CONF_VBLANK_NEVER
:
330 case DRI_CONF_VBLANK_DEF_INTERVAL_0
:
331 pdraw
->swap_interval
= 0;
333 case DRI_CONF_VBLANK_DEF_INTERVAL_1
:
334 case DRI_CONF_VBLANK_ALWAYS_SYNC
:
336 pdraw
->swap_interval
= 1;
340 dri3_update_num_back(pdraw
);
342 (void) __glXInitialize(psc
->base
.dpy
);
344 /* Create a new drawable */
346 (*psc
->image_driver
->createNewDrawable
) (psc
->driScreen
,
347 config
->driConfig
, pdraw
);
349 if (!pdraw
->driDrawable
) {
355 * Make sure server has the same swap interval we do for the new
358 if (psc
->vtable
.setSwapInterval
)
359 psc
->vtable
.setSwapInterval(&pdraw
->base
, pdraw
->swap_interval
);
365 show_fps(struct dri3_drawable
*draw
, uint64_t current_ust
)
367 const uint64_t interval
=
368 ((struct dri3_screen
*) draw
->base
.psc
)->show_fps_interval
;
372 /* DRI3+Present together uses microseconds for UST. */
373 if (draw
->previous_ust
+ interval
* 1000000 <= current_ust
) {
374 if (draw
->previous_ust
) {
375 fprintf(stderr
, "libGL: FPS = %.1f\n",
376 ((uint64_t) draw
->frames
* 1000000) /
377 (double)(current_ust
- draw
->previous_ust
));
380 draw
->previous_ust
= current_ust
;
385 * Process one Present event
388 dri3_handle_present_event(struct dri3_drawable
*priv
, xcb_present_generic_event_t
*ge
)
390 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
392 switch (ge
->evtype
) {
393 case XCB_PRESENT_CONFIGURE_NOTIFY
: {
394 xcb_present_configure_notify_event_t
*ce
= (void *) ge
;
396 priv
->width
= ce
->width
;
397 priv
->height
= ce
->height
;
400 case XCB_PRESENT_COMPLETE_NOTIFY
: {
401 xcb_present_complete_notify_event_t
*ce
= (void *) ge
;
403 /* Compute the processed SBC number from the received 32-bit serial number merged
404 * with the upper 32-bits of the sent 64-bit serial number while checking for
407 if (ce
->kind
== XCB_PRESENT_COMPLETE_KIND_PIXMAP
) {
408 priv
->recv_sbc
= (priv
->send_sbc
& 0xffffffff00000000LL
) | ce
->serial
;
409 if (priv
->recv_sbc
> priv
->send_sbc
)
410 priv
->recv_sbc
-= 0x100000000;
412 case XCB_PRESENT_COMPLETE_MODE_FLIP
:
413 priv
->flipping
= true;
415 case XCB_PRESENT_COMPLETE_MODE_COPY
:
416 priv
->flipping
= false;
419 dri3_update_num_back(priv
);
421 if (psc
->show_fps_interval
)
422 show_fps(priv
, ce
->ust
);
424 priv
->recv_msc_serial
= ce
->serial
;
430 case XCB_PRESENT_EVENT_IDLE_NOTIFY
: {
431 xcb_present_idle_notify_event_t
*ie
= (void *) ge
;
434 for (b
= 0; b
< sizeof (priv
->buffers
) / sizeof (priv
->buffers
[0]); b
++) {
435 struct dri3_buffer
*buf
= priv
->buffers
[b
];
437 if (buf
&& buf
->pixmap
== ie
->pixmap
) {
439 if (priv
->num_back
<= b
&& b
< DRI3_MAX_BACK
) {
440 dri3_free_render_buffer(priv
, buf
);
441 priv
->buffers
[b
] = NULL
;
453 dri3_wait_for_event(__GLXDRIdrawable
*pdraw
)
455 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->psc
->dpy
);
456 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
457 xcb_generic_event_t
*ev
;
458 xcb_present_generic_event_t
*ge
;
461 ev
= xcb_wait_for_special_event(c
, priv
->special_event
);
465 dri3_handle_present_event(priv
, ge
);
469 /** dri3_wait_for_msc
471 * Get the X server to send an event when the target msc/divisor/remainder is
475 dri3_wait_for_msc(__GLXDRIdrawable
*pdraw
, int64_t target_msc
, int64_t divisor
,
476 int64_t remainder
, int64_t *ust
, int64_t *msc
, int64_t *sbc
)
478 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->psc
->dpy
);
479 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
482 /* Ask for the an event for the target MSC */
483 msc_serial
= ++priv
->send_msc_serial
;
484 xcb_present_notify_msc(c
,
485 priv
->base
.xDrawable
,
493 /* Wait for the event */
494 if (priv
->special_event
) {
495 while ((int32_t) (msc_serial
- priv
->recv_msc_serial
) > 0) {
496 if (!dri3_wait_for_event(pdraw
))
503 *sbc
= priv
->recv_sbc
;
508 /** dri3_drawable_get_msc
510 * Return the current UST/MSC/SBC triplet by asking the server
514 dri3_drawable_get_msc(struct glx_screen
*psc
, __GLXDRIdrawable
*pdraw
,
515 int64_t *ust
, int64_t *msc
, int64_t *sbc
)
517 return dri3_wait_for_msc(pdraw
, 0, 0, 0, ust
, msc
,sbc
);
520 /** dri3_wait_for_sbc
522 * Wait for the completed swap buffer count to reach the specified
523 * target. Presumably the application knows that this will be reached with
524 * outstanding complete events, or we're going to be here awhile.
527 dri3_wait_for_sbc(__GLXDRIdrawable
*pdraw
, int64_t target_sbc
, int64_t *ust
,
528 int64_t *msc
, int64_t *sbc
)
530 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
532 while (priv
->recv_sbc
< target_sbc
) {
533 if (!dri3_wait_for_event(pdraw
))
539 *sbc
= priv
->recv_sbc
;
544 * Asks the driver to flush any queued work necessary for serializing with the
545 * X command stream, and optionally the slightly more strict requirement of
546 * glFlush() equivalence (which would require flushing even if nothing had
547 * been drawn to a window system framebuffer, for example).
550 dri3_flush(struct dri3_screen
*psc
,
551 struct dri3_drawable
*draw
,
553 enum __DRI2throttleReason throttle_reason
)
555 struct glx_context
*gc
= __glXGetCurrentContext();
558 struct dri3_context
*dri3Ctx
= (struct dri3_context
*)gc
;
560 (*psc
->f
->flush_with_flags
)(dri3Ctx
->driContext
, draw
->driDrawable
, flags
, throttle_reason
);
564 static xcb_gcontext_t
565 dri3_drawable_gc(struct dri3_drawable
*priv
)
569 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
573 (priv
->gc
= xcb_generate_id(c
)),
574 priv
->base
.xDrawable
,
575 XCB_GC_GRAPHICS_EXPOSURES
,
581 static struct dri3_buffer
*
582 dri3_back_buffer(struct dri3_drawable
*priv
)
584 return priv
->buffers
[DRI3_BACK_ID(priv
->cur_back
)];
587 static struct dri3_buffer
*
588 dri3_fake_front_buffer(struct dri3_drawable
*priv
)
590 return priv
->buffers
[DRI3_FRONT_ID
];
594 dri3_copy_area (xcb_connection_t
*c
/**< */,
595 xcb_drawable_t src_drawable
/**< */,
596 xcb_drawable_t dst_drawable
/**< */,
597 xcb_gcontext_t gc
/**< */,
598 int16_t src_x
/**< */,
599 int16_t src_y
/**< */,
600 int16_t dst_x
/**< */,
601 int16_t dst_y
/**< */,
602 uint16_t width
/**< */,
603 uint16_t height
/**< */)
605 xcb_void_cookie_t cookie
;
607 cookie
= xcb_copy_area_checked(c
,
617 xcb_discard_reply(c
, cookie
.sequence
);
621 dri3_copy_sub_buffer(__GLXDRIdrawable
*pdraw
, int x
, int y
,
622 int width
, int height
,
625 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
626 struct dri3_screen
*psc
= (struct dri3_screen
*) pdraw
->psc
;
627 struct dri3_context
*pcp
= (struct dri3_context
*) __glXGetCurrentContext();
628 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
629 struct dri3_buffer
*back
;
631 unsigned flags
= __DRI2_FLUSH_DRAWABLE
;
633 /* Check we have the right attachments */
634 if (!priv
->have_back
|| priv
->is_pixmap
)
638 flags
|= __DRI2_FLUSH_CONTEXT
;
639 dri3_flush(psc
, priv
, flags
, __DRI2_THROTTLE_SWAPBUFFER
);
641 back
= dri3_back_buffer(priv
);
642 y
= priv
->height
- y
- height
;
644 if (psc
->is_different_gpu
&& (&pcp
->base
!= &dummyContext
) && pcp
->base
.psc
== &psc
->base
) {
645 /* Update the linear buffer part of the back buffer
646 * for the dri3_copy_area operation
648 psc
->image
->blitImage(pcp
->driContext
,
654 back
->height
, __BLIT_FLAG_FLUSH
);
655 /* We use blitImage to update our fake front,
657 if (priv
->have_fake_front
)
658 psc
->image
->blitImage(pcp
->driContext
,
659 dri3_fake_front_buffer(priv
)->image
,
662 x
, y
, width
, height
, __BLIT_FLAG_FLUSH
);
665 dri3_fence_reset(c
, back
);
667 dri3_back_buffer(priv
)->pixmap
,
668 priv
->base
.xDrawable
,
669 dri3_drawable_gc(priv
),
670 x
, y
, x
, y
, width
, height
);
671 dri3_fence_trigger(c
, back
);
672 /* Refresh the fake front (if present) after we just damaged the real
675 if (priv
->have_fake_front
&& !psc
->is_different_gpu
) {
676 dri3_fence_reset(c
, dri3_fake_front_buffer(priv
));
678 dri3_back_buffer(priv
)->pixmap
,
679 dri3_fake_front_buffer(priv
)->pixmap
,
680 dri3_drawable_gc(priv
),
681 x
, y
, x
, y
, width
, height
);
682 dri3_fence_trigger(c
, dri3_fake_front_buffer(priv
));
683 dri3_fence_await(c
, dri3_fake_front_buffer(priv
));
685 dri3_fence_await(c
, back
);
689 dri3_copy_drawable(struct dri3_drawable
*priv
, Drawable dest
, Drawable src
)
691 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
692 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
694 dri3_flush(psc
, priv
, __DRI2_FLUSH_DRAWABLE
, 0);
696 dri3_fence_reset(c
, dri3_fake_front_buffer(priv
));
699 dri3_drawable_gc(priv
),
700 0, 0, 0, 0, priv
->width
, priv
->height
);
701 dri3_fence_trigger(c
, dri3_fake_front_buffer(priv
));
702 dri3_fence_await(c
, dri3_fake_front_buffer(priv
));
706 dri3_wait_x(struct glx_context
*gc
)
708 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
709 struct dri3_drawable
*priv
= (struct dri3_drawable
*)
710 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
711 struct dri3_screen
*psc
;
712 struct dri3_buffer
*front
;
714 if (priv
== NULL
|| !priv
->have_fake_front
)
717 psc
= (struct dri3_screen
*) priv
->base
.psc
;
718 front
= dri3_fake_front_buffer(priv
);
720 dri3_copy_drawable(priv
, front
->pixmap
, priv
->base
.xDrawable
);
722 /* In the psc->is_different_gpu case, the linear buffer has been updated,
723 * but not yet the tiled buffer.
724 * Copy back to the tiled buffer we use for rendering.
725 * Note that we don't need flushing.
727 if (psc
->is_different_gpu
&& (&pcp
->base
!= &dummyContext
) && pcp
->base
.psc
== &psc
->base
)
728 psc
->image
->blitImage(pcp
->driContext
,
730 front
->linear_buffer
,
738 dri3_wait_gl(struct glx_context
*gc
)
740 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
741 struct dri3_drawable
*priv
= (struct dri3_drawable
*)
742 GetGLXDRIDrawable(gc
->currentDpy
, gc
->currentDrawable
);
743 struct dri3_screen
*psc
;
744 struct dri3_buffer
*front
;
746 if (priv
== NULL
|| !priv
->have_fake_front
)
749 psc
= (struct dri3_screen
*) priv
->base
.psc
;
750 front
= dri3_fake_front_buffer(priv
);
752 /* In the psc->is_different_gpu case, we update the linear_buffer
753 * before updating the real front.
755 if (psc
->is_different_gpu
&& (&pcp
->base
!= &dummyContext
) && pcp
->base
.psc
== &psc
->base
)
756 psc
->image
->blitImage(pcp
->driContext
,
757 front
->linear_buffer
,
762 front
->height
, __BLIT_FLAG_FLUSH
);
763 dri3_copy_drawable(priv
, priv
->base
.xDrawable
, front
->pixmap
);
767 * Called by the driver when it needs to update the real front buffer with the
768 * contents of its fake front buffer.
771 dri3_flush_front_buffer(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
773 struct glx_context
*gc
;
774 struct dri3_drawable
*pdraw
= loaderPrivate
;
775 struct dri3_screen
*psc
;
780 if (!pdraw
->base
.psc
)
783 psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
785 (void) __glXInitialize(psc
->base
.dpy
);
787 gc
= __glXGetCurrentContext();
789 dri3_flush(psc
, pdraw
, __DRI2_FLUSH_DRAWABLE
, __DRI2_THROTTLE_FLUSHFRONT
);
795 dri3_cpp_for_format(uint32_t format
) {
797 case __DRI_IMAGE_FORMAT_R8
:
799 case __DRI_IMAGE_FORMAT_RGB565
:
800 case __DRI_IMAGE_FORMAT_GR88
:
802 case __DRI_IMAGE_FORMAT_XRGB8888
:
803 case __DRI_IMAGE_FORMAT_ARGB8888
:
804 case __DRI_IMAGE_FORMAT_ABGR8888
:
805 case __DRI_IMAGE_FORMAT_XBGR8888
:
806 case __DRI_IMAGE_FORMAT_XRGB2101010
:
807 case __DRI_IMAGE_FORMAT_ARGB2101010
:
808 case __DRI_IMAGE_FORMAT_SARGB8
:
810 case __DRI_IMAGE_FORMAT_NONE
:
817 /** dri3_alloc_render_buffer
819 * Use the driver createImage function to construct a __DRIimage, then
820 * get a file descriptor for that and create an X pixmap from that
822 * Allocate an xshmfence for synchronization
824 static struct dri3_buffer
*
825 dri3_alloc_render_buffer(struct glx_screen
*glx_screen
, Drawable draw
,
826 unsigned int format
, int width
, int height
, int depth
)
828 struct dri3_screen
*psc
= (struct dri3_screen
*) glx_screen
;
829 Display
*dpy
= glx_screen
->dpy
;
830 struct dri3_buffer
*buffer
;
831 __DRIimage
*pixmap_buffer
;
832 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
834 xcb_sync_fence_t sync_fence
;
835 struct xshmfence
*shm_fence
;
836 int buffer_fd
, fence_fd
;
839 /* Create an xshmfence object and
840 * prepare to send that to the X server
843 fence_fd
= xshmfence_alloc_shm();
845 ErrorMessageF("DRI3 Fence object allocation failure %s\n", strerror(errno
));
848 shm_fence
= xshmfence_map_shm(fence_fd
);
849 if (shm_fence
== NULL
) {
850 ErrorMessageF("DRI3 Fence object map failure %s\n", strerror(errno
));
854 /* Allocate the image from the driver
856 buffer
= calloc(1, sizeof (struct dri3_buffer
));
860 buffer
->cpp
= dri3_cpp_for_format(format
);
862 ErrorMessageF("DRI3 buffer format %d invalid\n", format
);
866 if (!psc
->is_different_gpu
) {
867 buffer
->image
= (*psc
->image
->createImage
) (psc
->driScreen
,
870 __DRI_IMAGE_USE_SHARE
|
871 __DRI_IMAGE_USE_SCANOUT
,
873 pixmap_buffer
= buffer
->image
;
875 if (!buffer
->image
) {
876 ErrorMessageF("DRI3 gpu image creation failure\n");
880 buffer
->image
= (*psc
->image
->createImage
) (psc
->driScreen
,
886 if (!buffer
->image
) {
887 ErrorMessageF("DRI3 other gpu image creation failure\n");
891 buffer
->linear_buffer
= (*psc
->image
->createImage
) (psc
->driScreen
,
894 __DRI_IMAGE_USE_SHARE
|
895 __DRI_IMAGE_USE_LINEAR
,
897 pixmap_buffer
= buffer
->linear_buffer
;
899 if (!buffer
->linear_buffer
) {
900 ErrorMessageF("DRI3 gpu linear image creation failure\n");
901 goto no_linear_buffer
;
905 /* X wants the stride, so ask the image for it
907 if (!(*psc
->image
->queryImage
)(pixmap_buffer
, __DRI_IMAGE_ATTRIB_STRIDE
, &stride
)) {
908 ErrorMessageF("DRI3 get image stride failed\n");
909 goto no_buffer_attrib
;
912 buffer
->pitch
= stride
;
914 if (!(*psc
->image
->queryImage
)(pixmap_buffer
, __DRI_IMAGE_ATTRIB_FD
, &buffer_fd
)) {
915 ErrorMessageF("DRI3 get image FD failed\n");
916 goto no_buffer_attrib
;
919 xcb_dri3_pixmap_from_buffer(c
,
920 (pixmap
= xcb_generate_id(c
)),
923 width
, height
, buffer
->pitch
,
924 depth
, buffer
->cpp
* 8,
927 xcb_dri3_fence_from_fd(c
,
929 (sync_fence
= xcb_generate_id(c
)),
933 buffer
->pixmap
= pixmap
;
934 buffer
->own_pixmap
= true;
935 buffer
->sync_fence
= sync_fence
;
936 buffer
->shm_fence
= shm_fence
;
937 buffer
->width
= width
;
938 buffer
->height
= height
;
940 /* Mark the buffer as idle
942 dri3_fence_set(buffer
);
947 (*psc
->image
->destroyImage
)(pixmap_buffer
);
949 if (psc
->is_different_gpu
)
950 (*psc
->image
->destroyImage
)(buffer
->image
);
954 xshmfence_unmap_shm(shm_fence
);
957 ErrorMessageF("DRI3 alloc_render_buffer failed\n");
961 /** dri3_free_render_buffer
963 * Free everything associated with one render buffer including pixmap, fence
964 * stuff and the driver image
967 dri3_free_render_buffer(struct dri3_drawable
*pdraw
, struct dri3_buffer
*buffer
)
969 struct dri3_screen
*psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
970 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->base
.psc
->dpy
);
972 if (buffer
->own_pixmap
)
973 xcb_free_pixmap(c
, buffer
->pixmap
);
974 xcb_sync_destroy_fence(c
, buffer
->sync_fence
);
975 xshmfence_unmap_shm(buffer
->shm_fence
);
976 (*psc
->image
->destroyImage
)(buffer
->image
);
977 if (buffer
->linear_buffer
)
978 (*psc
->image
->destroyImage
)(buffer
->linear_buffer
);
983 /** dri3_flush_present_events
985 * Process any present events that have been received from the X server
988 dri3_flush_present_events(struct dri3_drawable
*priv
)
990 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
992 /* Check to see if any configuration changes have occurred
993 * since we were last invoked
995 if (priv
->special_event
) {
996 xcb_generic_event_t
*ev
;
998 while ((ev
= xcb_poll_for_special_event(c
, priv
->special_event
)) != NULL
) {
999 xcb_present_generic_event_t
*ge
= (void *) ev
;
1000 dri3_handle_present_event(priv
, ge
);
1005 /** dri3_update_drawable
1007 * Called the first time we use the drawable and then
1008 * after we receive present configure notify events to
1009 * track the geometry of the drawable
1012 dri3_update_drawable(__DRIdrawable
*driDrawable
, void *loaderPrivate
)
1014 struct dri3_drawable
*priv
= loaderPrivate
;
1015 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
1017 /* First time through, go get the current drawable geometry
1019 if (priv
->width
== 0 || priv
->height
== 0 || priv
->depth
== 0) {
1020 xcb_get_geometry_cookie_t geom_cookie
;
1021 xcb_get_geometry_reply_t
*geom_reply
;
1022 xcb_void_cookie_t cookie
;
1023 xcb_generic_error_t
*error
;
1024 xcb_present_query_capabilities_cookie_t present_capabilities_cookie
;
1025 xcb_present_query_capabilities_reply_t
*present_capabilities_reply
;
1028 /* Try to select for input on the window.
1030 * If the drawable is a window, this will get our events
1033 * Otherwise, we'll get a BadWindow error back from this request which
1034 * will let us know that the drawable is a pixmap instead.
1038 cookie
= xcb_present_select_input_checked(c
,
1039 (priv
->eid
= xcb_generate_id(c
)),
1040 priv
->base
.xDrawable
,
1041 XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY
|
1042 XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY
|
1043 XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY
);
1045 present_capabilities_cookie
= xcb_present_query_capabilities(c
, priv
->base
.xDrawable
);
1047 /* Create an XCB event queue to hold present events outside of the usual
1048 * application event queue
1050 priv
->special_event
= xcb_register_for_special_xge(c
,
1055 geom_cookie
= xcb_get_geometry(c
, priv
->base
.xDrawable
);
1057 geom_reply
= xcb_get_geometry_reply(c
, geom_cookie
, NULL
);
1062 priv
->width
= geom_reply
->width
;
1063 priv
->height
= geom_reply
->height
;
1064 priv
->depth
= geom_reply
->depth
;
1065 priv
->is_pixmap
= false;
1069 /* Check to see if our select input call failed. If it failed with a
1070 * BadWindow error, then assume the drawable is a pixmap. Destroy the
1071 * special event queue created above and mark the drawable as a pixmap
1074 error
= xcb_request_check(c
, cookie
);
1076 present_capabilities_reply
= xcb_present_query_capabilities_reply(c
,
1077 present_capabilities_cookie
,
1080 if (present_capabilities_reply
) {
1081 priv
->present_capabilities
= present_capabilities_reply
->capabilities
;
1082 free(present_capabilities_reply
);
1084 priv
->present_capabilities
= 0;
1087 if (error
->error_code
!= BadWindow
) {
1091 priv
->is_pixmap
= true;
1092 xcb_unregister_for_special_event(c
, priv
->special_event
);
1093 priv
->special_event
= NULL
;
1096 dri3_flush_present_events(priv
);
1100 /* the DRIimage createImage function takes __DRI_IMAGE_FORMAT codes, while
1101 * the createImageFromFds call takes __DRI_IMAGE_FOURCC codes. To avoid
1102 * complete confusion, just deal in __DRI_IMAGE_FORMAT codes for now and
1103 * translate to __DRI_IMAGE_FOURCC codes in the call to createImageFromFds
1106 image_format_to_fourcc(int format
)
1109 /* Convert from __DRI_IMAGE_FORMAT to __DRI_IMAGE_FOURCC (sigh) */
1111 case __DRI_IMAGE_FORMAT_SARGB8
: return __DRI_IMAGE_FOURCC_SARGB8888
;
1112 case __DRI_IMAGE_FORMAT_RGB565
: return __DRI_IMAGE_FOURCC_RGB565
;
1113 case __DRI_IMAGE_FORMAT_XRGB8888
: return __DRI_IMAGE_FOURCC_XRGB8888
;
1114 case __DRI_IMAGE_FORMAT_ARGB8888
: return __DRI_IMAGE_FOURCC_ARGB8888
;
1115 case __DRI_IMAGE_FORMAT_ABGR8888
: return __DRI_IMAGE_FOURCC_ABGR8888
;
1116 case __DRI_IMAGE_FORMAT_XBGR8888
: return __DRI_IMAGE_FOURCC_XBGR8888
;
1121 /** dri3_get_pixmap_buffer
1123 * Get the DRM object for a pixmap from the X server and
1124 * wrap that with a __DRIimage structure using createImageFromFds
1126 static struct dri3_buffer
*
1127 dri3_get_pixmap_buffer(__DRIdrawable
*driDrawable
,
1128 unsigned int format
,
1129 enum dri3_buffer_type buffer_type
,
1130 void *loaderPrivate
)
1132 struct dri3_drawable
*pdraw
= loaderPrivate
;
1133 int buf_id
= dri3_pixmap_buf_id(buffer_type
);
1134 struct dri3_buffer
*buffer
= pdraw
->buffers
[buf_id
];
1136 xcb_dri3_buffer_from_pixmap_cookie_t bp_cookie
;
1137 xcb_dri3_buffer_from_pixmap_reply_t
*bp_reply
;
1140 struct dri3_screen
*psc
;
1141 xcb_connection_t
*c
;
1142 xcb_sync_fence_t sync_fence
;
1143 struct xshmfence
*shm_fence
;
1145 __DRIimage
*image_planar
;
1151 pixmap
= pdraw
->base
.xDrawable
;
1152 psc
= (struct dri3_screen
*) pdraw
->base
.psc
;
1153 dpy
= psc
->base
.dpy
;
1154 c
= XGetXCBConnection(dpy
);
1156 buffer
= calloc(1, sizeof (struct dri3_buffer
));
1160 fence_fd
= xshmfence_alloc_shm();
1163 shm_fence
= xshmfence_map_shm(fence_fd
);
1164 if (shm_fence
== NULL
) {
1169 xcb_dri3_fence_from_fd(c
,
1171 (sync_fence
= xcb_generate_id(c
)),
1175 /* Get an FD for the pixmap object
1177 bp_cookie
= xcb_dri3_buffer_from_pixmap(c
, pixmap
);
1178 bp_reply
= xcb_dri3_buffer_from_pixmap_reply(c
, bp_cookie
, NULL
);
1181 fds
= xcb_dri3_buffer_from_pixmap_reply_fds(c
, bp_reply
);
1183 stride
= bp_reply
->stride
;
1186 /* createImageFromFds creates a wrapper __DRIimage structure which
1187 * can deal with multiple planes for things like Yuv images. So, once
1188 * we've gotten the planar wrapper, pull the single plane out of it and
1189 * discard the wrapper.
1191 image_planar
= (*psc
->image
->createImageFromFds
) (psc
->driScreen
,
1194 image_format_to_fourcc(format
),
1196 &stride
, &offset
, buffer
);
1201 buffer
->image
= (*psc
->image
->fromPlanar
)(image_planar
, 0, buffer
);
1203 (*psc
->image
->destroyImage
)(image_planar
);
1208 buffer
->pixmap
= pixmap
;
1209 buffer
->own_pixmap
= false;
1210 buffer
->width
= bp_reply
->width
;
1211 buffer
->height
= bp_reply
->height
;
1212 buffer
->buffer_type
= buffer_type
;
1213 buffer
->shm_fence
= shm_fence
;
1214 buffer
->sync_fence
= sync_fence
;
1216 pdraw
->buffers
[buf_id
] = buffer
;
1220 xcb_sync_destroy_fence(c
, sync_fence
);
1221 xshmfence_unmap_shm(shm_fence
);
1230 * Find an idle back buffer. If there isn't one, then
1231 * wait for a present idle notify event from the X server
1234 dri3_find_back(xcb_connection_t
*c
, struct dri3_drawable
*priv
)
1237 xcb_generic_event_t
*ev
;
1238 xcb_present_generic_event_t
*ge
;
1241 for (b
= 0; b
< priv
->num_back
; b
++) {
1242 int id
= DRI3_BACK_ID((b
+ priv
->cur_back
) % priv
->num_back
);
1243 struct dri3_buffer
*buffer
= priv
->buffers
[id
];
1245 if (!buffer
|| !buffer
->busy
) {
1246 priv
->cur_back
= id
;
1251 ev
= xcb_wait_for_special_event(c
, priv
->special_event
);
1255 dri3_handle_present_event(priv
, ge
);
1261 * Find a front or back buffer, allocating new ones as necessary
1263 static struct dri3_buffer
*
1264 dri3_get_buffer(__DRIdrawable
*driDrawable
,
1265 unsigned int format
,
1266 enum dri3_buffer_type buffer_type
,
1267 void *loaderPrivate
)
1269 struct dri3_context
*pcp
= (struct dri3_context
*) __glXGetCurrentContext();
1270 struct dri3_drawable
*priv
= loaderPrivate
;
1271 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1272 xcb_connection_t
*c
= XGetXCBConnection(priv
->base
.psc
->dpy
);
1273 struct dri3_buffer
*buffer
;
1276 if (buffer_type
== dri3_buffer_back
) {
1277 buf_id
= dri3_find_back(c
, priv
);
1282 buf_id
= DRI3_FRONT_ID
;
1285 buffer
= priv
->buffers
[buf_id
];
1287 /* Allocate a new buffer if there isn't an old one, or if that
1288 * old one is the wrong size
1290 if (!buffer
|| buffer
->width
!= priv
->width
|| buffer
->height
!= priv
->height
) {
1291 struct dri3_buffer
*new_buffer
;
1293 /* Allocate the new buffers
1295 new_buffer
= dri3_alloc_render_buffer(priv
->base
.psc
,
1296 priv
->base
.xDrawable
,
1297 format
, priv
->width
, priv
->height
, priv
->depth
);
1301 /* When resizing, copy the contents of the old buffer, waiting for that
1302 * copy to complete using our fences before proceeding
1304 switch (buffer_type
) {
1305 case dri3_buffer_back
:
1307 if (!buffer
->linear_buffer
) {
1308 dri3_fence_reset(c
, new_buffer
);
1309 dri3_fence_await(c
, buffer
);
1313 dri3_drawable_gc(priv
),
1314 0, 0, 0, 0, priv
->width
, priv
->height
);
1315 dri3_fence_trigger(c
, new_buffer
);
1316 } else if ((&pcp
->base
!= &dummyContext
) && pcp
->base
.psc
== &psc
->base
) {
1317 psc
->image
->blitImage(pcp
->driContext
,
1325 dri3_free_render_buffer(priv
, buffer
);
1328 case dri3_buffer_front
:
1329 dri3_fence_reset(c
, new_buffer
);
1331 priv
->base
.xDrawable
,
1333 dri3_drawable_gc(priv
),
1334 0, 0, 0, 0, priv
->width
, priv
->height
);
1335 dri3_fence_trigger(c
, new_buffer
);
1337 if (new_buffer
->linear_buffer
&& (&pcp
->base
!= &dummyContext
) && pcp
->base
.psc
== &psc
->base
) {
1338 dri3_fence_await(c
, new_buffer
);
1339 psc
->image
->blitImage(pcp
->driContext
,
1341 new_buffer
->linear_buffer
,
1349 buffer
= new_buffer
;
1350 buffer
->buffer_type
= buffer_type
;
1351 priv
->buffers
[buf_id
] = buffer
;
1353 dri3_fence_await(c
, buffer
);
1355 /* Return the requested buffer */
1359 /** dri3_free_buffers
1361 * Free the front bufffer or all of the back buffers. Used
1362 * when the application changes which buffers it needs
1365 dri3_free_buffers(__DRIdrawable
*driDrawable
,
1366 enum dri3_buffer_type buffer_type
,
1367 void *loaderPrivate
)
1369 struct dri3_drawable
*priv
= loaderPrivate
;
1370 struct dri3_buffer
*buffer
;
1375 switch (buffer_type
) {
1376 case dri3_buffer_back
:
1377 first_id
= DRI3_BACK_ID(0);
1378 n_id
= DRI3_MAX_BACK
;
1380 case dri3_buffer_front
:
1381 first_id
= DRI3_FRONT_ID
;
1385 for (buf_id
= first_id
; buf_id
< first_id
+ n_id
; buf_id
++) {
1386 buffer
= priv
->buffers
[buf_id
];
1388 dri3_free_render_buffer(priv
, buffer
);
1389 priv
->buffers
[buf_id
] = NULL
;
1394 /** dri3_get_buffers
1396 * The published buffer allocation API.
1397 * Returns all of the necessary buffers, allocating
1401 dri3_get_buffers(__DRIdrawable
*driDrawable
,
1402 unsigned int format
,
1404 void *loaderPrivate
,
1405 uint32_t buffer_mask
,
1406 struct __DRIimageList
*buffers
)
1408 struct dri3_drawable
*priv
= loaderPrivate
;
1409 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1410 struct dri3_buffer
*front
, *back
;
1412 buffers
->image_mask
= 0;
1413 buffers
->front
= NULL
;
1414 buffers
->back
= NULL
;
1419 if (!dri3_update_drawable(driDrawable
, loaderPrivate
))
1422 /* pixmaps always have front buffers */
1423 if (priv
->is_pixmap
)
1424 buffer_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1426 if (buffer_mask
& __DRI_IMAGE_BUFFER_FRONT
) {
1427 /* All pixmaps are owned by the server gpu.
1428 * When we use a different gpu, we can't use the pixmap
1429 * as buffer since it is potentially tiled a way
1430 * our device can't understand. In this case, use
1431 * a fake front buffer. Hopefully the pixmap
1432 * content will get synced with the fake front
1435 if (priv
->is_pixmap
&& !psc
->is_different_gpu
)
1436 front
= dri3_get_pixmap_buffer(driDrawable
,
1441 front
= dri3_get_buffer(driDrawable
,
1449 dri3_free_buffers(driDrawable
, dri3_buffer_front
, loaderPrivate
);
1450 priv
->have_fake_front
= 0;
1453 if (buffer_mask
& __DRI_IMAGE_BUFFER_BACK
) {
1454 back
= dri3_get_buffer(driDrawable
,
1460 priv
->have_back
= 1;
1462 dri3_free_buffers(driDrawable
, dri3_buffer_back
, loaderPrivate
);
1463 priv
->have_back
= 0;
1467 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_FRONT
;
1468 buffers
->front
= front
->image
;
1469 priv
->have_fake_front
= psc
->is_different_gpu
|| !priv
->is_pixmap
;
1473 buffers
->image_mask
|= __DRI_IMAGE_BUFFER_BACK
;
1474 buffers
->back
= back
->image
;
1477 priv
->stamp
= stamp
;
1482 /* The image loader extension record for DRI3
1484 static const __DRIimageLoaderExtension imageLoaderExtension
= {
1485 .base
= { __DRI_IMAGE_LOADER
, 1 },
1487 .getBuffers
= dri3_get_buffers
,
1488 .flushFrontBuffer
= dri3_flush_front_buffer
,
1491 const __DRIuseInvalidateExtension dri3UseInvalidate
= {
1492 .base
= { __DRI_USE_INVALIDATE
, 1 }
1495 static const __DRIextension
*loader_extensions
[] = {
1496 &imageLoaderExtension
.base
,
1497 &systemTimeExtension
.base
,
1498 &dri3UseInvalidate
.base
,
1502 /** dri3_swap_buffers
1504 * Make the current back buffer visible using the present extension
1507 dri3_swap_buffers(__GLXDRIdrawable
*pdraw
, int64_t target_msc
, int64_t divisor
,
1508 int64_t remainder
, Bool flush
)
1510 struct dri3_context
*pcp
= (struct dri3_context
*) __glXGetCurrentContext();
1511 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1512 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1513 Display
*dpy
= priv
->base
.psc
->dpy
;
1514 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1515 struct dri3_buffer
*back
;
1518 unsigned flags
= __DRI2_FLUSH_DRAWABLE
;
1520 flags
|= __DRI2_FLUSH_CONTEXT
;
1521 dri3_flush(psc
, priv
, flags
, __DRI2_THROTTLE_SWAPBUFFER
);
1523 back
= priv
->buffers
[DRI3_BACK_ID(priv
->cur_back
)];
1524 if (psc
->is_different_gpu
&& back
) {
1525 /* Update the linear buffer before presenting the pixmap */
1526 psc
->image
->blitImage(pcp
->driContext
,
1527 back
->linear_buffer
,
1532 back
->height
, __BLIT_FLAG_FLUSH
);
1533 /* Update the fake front */
1534 if (priv
->have_fake_front
)
1535 psc
->image
->blitImage(pcp
->driContext
,
1536 priv
->buffers
[DRI3_FRONT_ID
]->image
,
1541 priv
->height
, __BLIT_FLAG_FLUSH
);
1544 dri3_flush_present_events(priv
);
1546 if (back
&& !priv
->is_pixmap
) {
1547 dri3_fence_reset(c
, back
);
1549 /* Compute when we want the frame shown by taking the last known successful
1550 * MSC and adding in a swap interval for each outstanding swap request
1553 if (target_msc
== 0)
1554 target_msc
= priv
->msc
+ priv
->swap_interval
* (priv
->send_sbc
- priv
->recv_sbc
);
1557 back
->last_swap
= priv
->send_sbc
;
1558 xcb_present_pixmap(c
,
1559 priv
->base
.xDrawable
,
1561 (uint32_t) priv
->send_sbc
,
1566 None
, /* target_crtc */
1569 XCB_PRESENT_OPTION_NONE
,
1572 remainder
, 0, NULL
);
1573 ret
= (int64_t) priv
->send_sbc
;
1575 /* If there's a fake front, then copy the source back buffer
1576 * to the fake front to keep it up to date. This needs
1577 * to reset the fence and make future users block until
1578 * the X server is done copying the bits
1580 if (priv
->have_fake_front
&& !psc
->is_different_gpu
) {
1581 dri3_fence_reset(c
, priv
->buffers
[DRI3_FRONT_ID
]);
1584 priv
->buffers
[DRI3_FRONT_ID
]->pixmap
,
1585 dri3_drawable_gc(priv
),
1586 0, 0, 0, 0, priv
->width
, priv
->height
);
1587 dri3_fence_trigger(c
, priv
->buffers
[DRI3_FRONT_ID
]);
1594 (*psc
->f
->invalidate
)(priv
->driDrawable
);
1600 dri3_get_buffer_age(__GLXDRIdrawable
*pdraw
)
1602 xcb_connection_t
*c
= XGetXCBConnection(pdraw
->psc
->dpy
);
1603 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1604 int back_id
= DRI3_BACK_ID(dri3_find_back(c
, priv
));
1606 if (back_id
< 0 || !priv
->buffers
[back_id
])
1609 if (priv
->buffers
[back_id
]->last_swap
!= 0)
1610 return priv
->send_sbc
- priv
->buffers
[back_id
]->last_swap
+ 1;
1617 * Wrapper around xcb_dri3_open
1620 dri3_open(Display
*dpy
,
1624 xcb_dri3_open_cookie_t cookie
;
1625 xcb_dri3_open_reply_t
*reply
;
1626 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
1629 cookie
= xcb_dri3_open(c
,
1633 reply
= xcb_dri3_open_reply(c
, cookie
, NULL
);
1637 if (reply
->nfd
!= 1) {
1642 fd
= xcb_dri3_open_reply_fds(c
, reply
)[0];
1643 fcntl(fd
, F_SETFD
, FD_CLOEXEC
);
1649 /** dri3_destroy_screen
1652 dri3_destroy_screen(struct glx_screen
*base
)
1654 struct dri3_screen
*psc
= (struct dri3_screen
*) base
;
1656 /* Free the direct rendering per screen data */
1657 (*psc
->core
->destroyScreen
) (psc
->driScreen
);
1658 driDestroyConfigs(psc
->driver_configs
);
1663 /** dri3_set_swap_interval
1665 * Record the application swap interval specification,
1668 dri3_set_swap_interval(__GLXDRIdrawable
*pdraw
, int interval
)
1670 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1671 GLint vblank_mode
= DRI_CONF_VBLANK_DEF_INTERVAL_1
;
1672 struct dri3_screen
*psc
= (struct dri3_screen
*) priv
->base
.psc
;
1675 psc
->config
->configQueryi(psc
->driScreen
,
1676 "vblank_mode", &vblank_mode
);
1678 switch (vblank_mode
) {
1679 case DRI_CONF_VBLANK_NEVER
:
1681 return GLX_BAD_VALUE
;
1683 case DRI_CONF_VBLANK_ALWAYS_SYNC
:
1685 return GLX_BAD_VALUE
;
1691 priv
->swap_interval
= interval
;
1692 dri3_update_num_back(priv
);
1697 /** dri3_get_swap_interval
1699 * Return the stored swap interval
1702 dri3_get_swap_interval(__GLXDRIdrawable
*pdraw
)
1704 struct dri3_drawable
*priv
= (struct dri3_drawable
*) pdraw
;
1706 return priv
->swap_interval
;
1710 dri3_bind_tex_image(Display
* dpy
,
1711 GLXDrawable drawable
,
1712 int buffer
, const int *attrib_list
)
1714 struct glx_context
*gc
= __glXGetCurrentContext();
1715 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
1716 __GLXDRIdrawable
*base
= GetGLXDRIDrawable(dpy
, drawable
);
1717 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
1718 struct dri3_screen
*psc
;
1720 if (pdraw
!= NULL
) {
1721 psc
= (struct dri3_screen
*) base
->psc
;
1723 (*psc
->f
->invalidate
)(pdraw
->driDrawable
);
1727 (*psc
->texBuffer
->setTexBuffer2
) (pcp
->driContext
,
1728 pdraw
->base
.textureTarget
,
1729 pdraw
->base
.textureFormat
,
1730 pdraw
->driDrawable
);
1735 dri3_release_tex_image(Display
* dpy
, GLXDrawable drawable
, int buffer
)
1737 struct glx_context
*gc
= __glXGetCurrentContext();
1738 struct dri3_context
*pcp
= (struct dri3_context
*) gc
;
1739 __GLXDRIdrawable
*base
= GetGLXDRIDrawable(dpy
, drawable
);
1740 struct dri3_drawable
*pdraw
= (struct dri3_drawable
*) base
;
1741 struct dri3_screen
*psc
;
1743 if (pdraw
!= NULL
) {
1744 psc
= (struct dri3_screen
*) base
->psc
;
1746 if (psc
->texBuffer
->base
.version
>= 3 &&
1747 psc
->texBuffer
->releaseTexBuffer
!= NULL
)
1748 (*psc
->texBuffer
->releaseTexBuffer
) (pcp
->driContext
,
1749 pdraw
->base
.textureTarget
,
1750 pdraw
->driDrawable
);
1754 static const struct glx_context_vtable dri3_context_vtable
= {
1755 .destroy
= dri3_destroy_context
,
1756 .bind
= dri3_bind_context
,
1757 .unbind
= dri3_unbind_context
,
1758 .wait_gl
= dri3_wait_gl
,
1759 .wait_x
= dri3_wait_x
,
1760 .use_x_font
= DRI_glXUseXFont
,
1761 .bind_tex_image
= dri3_bind_tex_image
,
1762 .release_tex_image
= dri3_release_tex_image
,
1763 .get_proc_address
= NULL
,
1766 /** dri3_bind_extensions
1768 * Enable all of the extensions supported on DRI3
1771 dri3_bind_extensions(struct dri3_screen
*psc
, struct glx_display
* priv
,
1772 const char *driverName
)
1774 const __DRIextension
**extensions
;
1778 extensions
= psc
->core
->getExtensions(psc
->driScreen
);
1780 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_video_sync");
1781 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_swap_control");
1782 __glXEnableDirectExtension(&psc
->base
, "GLX_MESA_swap_control");
1783 __glXEnableDirectExtension(&psc
->base
, "GLX_SGI_make_current_read");
1784 __glXEnableDirectExtension(&psc
->base
, "GLX_INTEL_swap_event");
1786 mask
= psc
->image_driver
->getAPIMask(psc
->driScreen
);
1788 __glXEnableDirectExtension(&psc
->base
, "GLX_ARB_create_context");
1789 __glXEnableDirectExtension(&psc
->base
, "GLX_ARB_create_context_profile");
1791 if ((mask
& (1 << __DRI_API_GLES2
)) != 0)
1792 __glXEnableDirectExtension(&psc
->base
,
1793 "GLX_EXT_create_context_es2_profile");
1795 for (i
= 0; extensions
[i
]; i
++) {
1796 /* when on a different gpu than the server, the server pixmaps
1797 * can have a tiling mode we can't read. Thus we can't create
1798 * a texture from them.
1800 if (!psc
->is_different_gpu
&&
1801 (strcmp(extensions
[i
]->name
, __DRI_TEX_BUFFER
) == 0)) {
1802 psc
->texBuffer
= (__DRItexBufferExtension
*) extensions
[i
];
1803 __glXEnableDirectExtension(&psc
->base
, "GLX_EXT_texture_from_pixmap");
1806 if ((strcmp(extensions
[i
]->name
, __DRI2_FLUSH
) == 0)) {
1807 psc
->f
= (__DRI2flushExtension
*) extensions
[i
];
1808 /* internal driver extension, no GL extension exposed */
1811 if (strcmp(extensions
[i
]->name
, __DRI_IMAGE
) == 0)
1812 psc
->image
= (__DRIimageExtension
*) extensions
[i
];
1814 if ((strcmp(extensions
[i
]->name
, __DRI2_CONFIG_QUERY
) == 0))
1815 psc
->config
= (__DRI2configQueryExtension
*) extensions
[i
];
1817 if (strcmp(extensions
[i
]->name
, __DRI2_ROBUSTNESS
) == 0)
1818 __glXEnableDirectExtension(&psc
->base
,
1819 "GLX_ARB_create_context_robustness");
1821 if (strcmp(extensions
[i
]->name
, __DRI2_RENDERER_QUERY
) == 0) {
1822 psc
->rendererQuery
= (__DRI2rendererQueryExtension
*) extensions
[i
];
1823 __glXEnableDirectExtension(&psc
->base
, "GLX_MESA_query_renderer");
1828 static const struct glx_screen_vtable dri3_screen_vtable
= {
1829 .create_context
= dri3_create_context
,
1830 .create_context_attribs
= dri3_create_context_attribs
,
1831 .query_renderer_integer
= dri3_query_renderer_integer
,
1832 .query_renderer_string
= dri3_query_renderer_string
,
1835 /** dri3_create_screen
1837 * Initialize DRI3 on the specified screen.
1839 * Opens the DRI device, locates the appropriate DRI driver
1842 * Checks to see if the driver supports the necessary extensions
1844 * Initializes the driver for the screen and sets up our structures
1847 static struct glx_screen
*
1848 dri3_create_screen(int screen
, struct glx_display
* priv
)
1850 xcb_connection_t
*c
= XGetXCBConnection(priv
->dpy
);
1851 const __DRIconfig
**driver_configs
;
1852 const __DRIextension
**extensions
;
1853 const struct dri3_display
*const pdp
= (struct dri3_display
*)
1855 struct dri3_screen
*psc
;
1856 __GLXDRIscreen
*psp
;
1857 struct glx_config
*configs
= NULL
, *visuals
= NULL
;
1858 char *driverName
, *deviceName
, *tmp
;
1861 psc
= calloc(1, sizeof *psc
);
1867 if (!glx_screen_init(&psc
->base
, screen
, priv
)) {
1872 psc
->fd
= dri3_open(priv
->dpy
, RootWindow(priv
->dpy
, screen
), None
);
1874 int conn_error
= xcb_connection_has_error(c
);
1876 glx_screen_cleanup(&psc
->base
);
1878 InfoMessageF("screen %d does not appear to be DRI3 capable\n", screen
);
1881 ErrorMessageF("Connection closed during DRI3 initialization failure");
1886 psc
->fd
= loader_get_user_preferred_fd(psc
->fd
, &psc
->is_different_gpu
);
1889 driverName
= loader_get_driver_for_fd(psc
->fd
, 0);
1891 ErrorMessageF("No driver found\n");
1895 psc
->driver
= driOpenDriver(driverName
);
1896 if (psc
->driver
== NULL
) {
1897 ErrorMessageF("driver pointer missing\n");
1901 extensions
= driGetDriverExtensions(psc
->driver
, driverName
);
1902 if (extensions
== NULL
)
1905 for (i
= 0; extensions
[i
]; i
++) {
1906 if (strcmp(extensions
[i
]->name
, __DRI_CORE
) == 0)
1907 psc
->core
= (__DRIcoreExtension
*) extensions
[i
];
1908 if (strcmp(extensions
[i
]->name
, __DRI_IMAGE_DRIVER
) == 0)
1909 psc
->image_driver
= (__DRIimageDriverExtension
*) extensions
[i
];
1913 if (psc
->core
== NULL
) {
1914 ErrorMessageF("core dri driver extension not found\n");
1918 if (psc
->image_driver
== NULL
) {
1919 ErrorMessageF("image driver extension not found\n");
1924 psc
->image_driver
->createNewScreen2(screen
, psc
->fd
,
1925 pdp
->loader_extensions
,
1927 &driver_configs
, psc
);
1929 if (psc
->driScreen
== NULL
) {
1930 ErrorMessageF("failed to create dri screen\n");
1934 dri3_bind_extensions(psc
, priv
, driverName
);
1936 if (!psc
->image
|| psc
->image
->base
.version
< 7 || !psc
->image
->createImageFromFds
) {
1937 ErrorMessageF("Version 7 or imageFromFds image extension not found\n");
1941 if (!psc
->f
|| psc
->f
->base
.version
< 4) {
1942 ErrorMessageF("Version 4 or later of flush extension not found\n");
1946 if (psc
->is_different_gpu
&& psc
->image
->base
.version
< 9) {
1947 ErrorMessageF("Different GPU, but image extension version 9 or later not found\n");
1951 if (!psc
->is_different_gpu
&& (
1952 !psc
->texBuffer
|| psc
->texBuffer
->base
.version
< 2 ||
1953 !psc
->texBuffer
->setTexBuffer2
1955 ErrorMessageF("Version 2 or later of texBuffer extension not found\n");
1959 configs
= driConvertConfigs(psc
->core
, psc
->base
.configs
, driver_configs
);
1960 visuals
= driConvertConfigs(psc
->core
, psc
->base
.visuals
, driver_configs
);
1962 if (!configs
|| !visuals
) {
1963 ErrorMessageF("No matching fbConfigs or visuals found\n");
1967 glx_config_destroy_list(psc
->base
.configs
);
1968 psc
->base
.configs
= configs
;
1969 glx_config_destroy_list(psc
->base
.visuals
);
1970 psc
->base
.visuals
= visuals
;
1972 psc
->driver_configs
= driver_configs
;
1974 psc
->base
.vtable
= &dri3_screen_vtable
;
1976 psc
->base
.driScreen
= psp
;
1977 psp
->destroyScreen
= dri3_destroy_screen
;
1978 psp
->createDrawable
= dri3_create_drawable
;
1979 psp
->swapBuffers
= dri3_swap_buffers
;
1981 psp
->getDrawableMSC
= dri3_drawable_get_msc
;
1982 psp
->waitForMSC
= dri3_wait_for_msc
;
1983 psp
->waitForSBC
= dri3_wait_for_sbc
;
1984 psp
->setSwapInterval
= dri3_set_swap_interval
;
1985 psp
->getSwapInterval
= dri3_get_swap_interval
;
1986 __glXEnableDirectExtension(&psc
->base
, "GLX_OML_sync_control");
1988 psp
->copySubBuffer
= dri3_copy_sub_buffer
;
1989 __glXEnableDirectExtension(&psc
->base
, "GLX_MESA_copy_sub_buffer");
1991 psp
->getBufferAge
= dri3_get_buffer_age
;
1992 __glXEnableDirectExtension(&psc
->base
, "GLX_EXT_buffer_age");
1997 tmp
= getenv("LIBGL_SHOW_FPS");
1998 psc
->show_fps_interval
= tmp
? atoi(tmp
) : 0;
1999 if (psc
->show_fps_interval
< 0)
2000 psc
->show_fps_interval
= 0;
2005 CriticalErrorMessageF("failed to load driver: %s\n", driverName
);
2008 glx_config_destroy_list(configs
);
2010 glx_config_destroy_list(visuals
);
2012 psc
->core
->destroyScreen(psc
->driScreen
);
2013 psc
->driScreen
= NULL
;
2017 dlclose(psc
->driver
);
2021 glx_screen_cleanup(&psc
->base
);
2027 /** dri_destroy_display
2029 * Called from __glXFreeDisplayPrivate.
2032 dri3_destroy_display(__GLXDRIdisplay
* dpy
)
2037 /** dri3_create_display
2039 * Allocate, initialize and return a __DRIdisplayPrivate object.
2040 * This is called from __glXInitialize() when we are given a new
2041 * display pointer. This is public to that function, but hidden from
2044 _X_HIDDEN __GLXDRIdisplay
*
2045 dri3_create_display(Display
* dpy
)
2047 struct dri3_display
*pdp
;
2048 xcb_connection_t
*c
= XGetXCBConnection(dpy
);
2049 xcb_dri3_query_version_cookie_t dri3_cookie
;
2050 xcb_dri3_query_version_reply_t
*dri3_reply
;
2051 xcb_present_query_version_cookie_t present_cookie
;
2052 xcb_present_query_version_reply_t
*present_reply
;
2053 xcb_generic_error_t
*error
;
2054 const xcb_query_extension_reply_t
*extension
;
2056 xcb_prefetch_extension_data(c
, &xcb_dri3_id
);
2057 xcb_prefetch_extension_data(c
, &xcb_present_id
);
2059 extension
= xcb_get_extension_data(c
, &xcb_dri3_id
);
2060 if (!(extension
&& extension
->present
))
2063 extension
= xcb_get_extension_data(c
, &xcb_present_id
);
2064 if (!(extension
&& extension
->present
))
2067 dri3_cookie
= xcb_dri3_query_version(c
,
2068 XCB_DRI3_MAJOR_VERSION
,
2069 XCB_DRI3_MINOR_VERSION
);
2072 present_cookie
= xcb_present_query_version(c
,
2073 XCB_PRESENT_MAJOR_VERSION
,
2074 XCB_PRESENT_MINOR_VERSION
);
2076 pdp
= malloc(sizeof *pdp
);
2080 dri3_reply
= xcb_dri3_query_version_reply(c
, dri3_cookie
, &error
);
2086 pdp
->dri3Major
= dri3_reply
->major_version
;
2087 pdp
->dri3Minor
= dri3_reply
->minor_version
;
2090 present_reply
= xcb_present_query_version_reply(c
, present_cookie
, &error
);
2091 if (!present_reply
) {
2095 pdp
->presentMajor
= present_reply
->major_version
;
2096 pdp
->presentMinor
= present_reply
->minor_version
;
2097 free(present_reply
);
2099 pdp
->base
.destroyDisplay
= dri3_destroy_display
;
2100 pdp
->base
.createScreen
= dri3_create_screen
;
2102 loader_set_logger(dri_message
);
2104 pdp
->loader_extensions
= loader_extensions
;
2112 #endif /* GLX_DIRECT_RENDERING */