1 /*
2 * Copyright © 2013 Keith Packard
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that copyright
7 * notice and this permission notice appear in supporting documentation, and
8 * that the name of the copyright holders not be used in advertising or
9 * publicity pertaining to distribution of the software without specific,
10 * written prior permission. The copyright holders make no representations
11 * about the suitability of this software for any purpose. It is provided "as
12 * is" without express or implied warranty.
13 *
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
20 * OF THIS SOFTWARE.
21 */
22
23 /*
24 * Portions of this code were adapted from dri2_glx.c which carries the
25 * following copyright:
26 *
27 * Copyright © 2008 Red Hat, Inc.
28 *
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.
38 *
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.
48 *
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.
53 *
54 * Authors:
55 * Kristian Høgsberg (krh@redhat.com)
56 */
57
58 #if defined(GLX_DIRECT_RENDERING) && !defined(GLX_USE_APPLEGL)
59
60 #include <X11/Xlib.h>
61 #include <X11/extensions/Xfixes.h>
62 #include <X11/Xlib-xcb.h>
63 #include <X11/xshmfence.h>
64 #include <xcb/xcb.h>
65 #include <xcb/dri3.h>
66 #include <xcb/present.h>
67 #include <GL/gl.h>
68 #include "glxclient.h"
69 #include <dlfcn.h>
70 #include <fcntl.h>
71 #include <unistd.h>
72 #include <sys/types.h>
73 #include <sys/mman.h>
74 #include <sys/time.h>
75
76 #include "dri_common.h"
77 #include "dri3_priv.h"
78 #include "loader.h"
79 #include "dri2.h"
80
81 static struct dri3_drawable *
loader_drawable_to_dri3_drawable(struct loader_dri3_drawable * draw)82 loader_drawable_to_dri3_drawable(struct loader_dri3_drawable *draw) {
83 size_t offset = offsetof(struct dri3_drawable, loader_drawable);
84 if (!draw)
85 return NULL;
86 return (struct dri3_drawable *)(((void*) draw) - offset);
87 }
88
89 static int
glx_dri3_get_swap_interval(struct loader_dri3_drawable * draw)90 glx_dri3_get_swap_interval(struct loader_dri3_drawable *draw)
91 {
92 struct dri3_drawable *priv = loader_drawable_to_dri3_drawable(draw);
93
94 return priv->swap_interval;
95 }
96
97 static int
glx_dri3_clamp_swap_interval(struct loader_dri3_drawable * draw,int interval)98 glx_dri3_clamp_swap_interval(struct loader_dri3_drawable *draw, int interval)
99 {
100 return interval;
101 }
102
103 static void
glx_dri3_set_swap_interval(struct loader_dri3_drawable * draw,int interval)104 glx_dri3_set_swap_interval(struct loader_dri3_drawable *draw, int interval)
105 {
106 struct dri3_drawable *priv = loader_drawable_to_dri3_drawable(draw);
107
108 priv->swap_interval = interval;
109 }
110
111 static void
glx_dri3_set_drawable_size(struct loader_dri3_drawable * draw,int width,int height)112 glx_dri3_set_drawable_size(struct loader_dri3_drawable *draw,
113 int width, int height)
114 {
115 /* Nothing to do */
116 }
117
118 static bool
glx_dri3_in_current_context(struct loader_dri3_drawable * draw)119 glx_dri3_in_current_context(struct loader_dri3_drawable *draw)
120 {
121 struct dri3_drawable *priv = loader_drawable_to_dri3_drawable(draw);
122
123 if (!priv)
124 return false;
125
126 struct dri3_context *pcp = (struct dri3_context *) __glXGetCurrentContext();
127 struct dri3_screen *psc = (struct dri3_screen *) priv->base.psc;
128
129 return (&pcp->base != &dummyContext) && pcp->base.psc == &psc->base;
130 }
131
132 static __DRIcontext *
glx_dri3_get_dri_context(struct loader_dri3_drawable * draw)133 glx_dri3_get_dri_context(struct loader_dri3_drawable *draw)
134 {
135 struct glx_context *gc = __glXGetCurrentContext();
136 struct dri3_context *dri3Ctx = (struct dri3_context *) gc;
137
138 return (gc != &dummyContext) ? dri3Ctx->driContext : NULL;
139 }
140
141 static __DRIscreen *
glx_dri3_get_dri_screen(struct loader_dri3_drawable * draw)142 glx_dri3_get_dri_screen(struct loader_dri3_drawable *draw)
143 {
144 struct glx_context *gc = __glXGetCurrentContext();
145 struct dri3_context *pcp = (struct dri3_context *) gc;
146 struct dri3_screen *psc = (struct dri3_screen *) pcp->base.psc;
147
148 return (gc != &dummyContext && psc) ? psc->driScreen : NULL;
149 }
150
151 static void
glx_dri3_flush_drawable(struct loader_dri3_drawable * draw,unsigned flags)152 glx_dri3_flush_drawable(struct loader_dri3_drawable *draw, unsigned flags)
153 {
154 loader_dri3_flush(draw, flags, __DRI2_THROTTLE_SWAPBUFFER);
155 }
156
157 static void
glx_dri3_show_fps(struct loader_dri3_drawable * draw,uint64_t current_ust)158 glx_dri3_show_fps(struct loader_dri3_drawable *draw, uint64_t current_ust)
159 {
160 struct dri3_drawable *priv = loader_drawable_to_dri3_drawable(draw);
161 const uint64_t interval =
162 ((struct dri3_screen *) priv->base.psc)->show_fps_interval;
163
164 if (!interval)
165 return;
166
167 priv->frames++;
168
169 /* DRI3+Present together uses microseconds for UST. */
170 if (priv->previous_ust + interval * 1000000 <= current_ust) {
171 if (priv->previous_ust) {
172 fprintf(stderr, "libGL: FPS = %.1f\n",
173 ((uint64_t) priv->frames * 1000000) /
174 (double)(current_ust - priv->previous_ust));
175 }
176 priv->frames = 0;
177 priv->previous_ust = current_ust;
178 }
179 }
180
181 static const struct loader_dri3_vtable glx_dri3_vtable = {
182 .get_swap_interval = glx_dri3_get_swap_interval,
183 .clamp_swap_interval = glx_dri3_clamp_swap_interval,
184 .set_swap_interval = glx_dri3_set_swap_interval,
185 .set_drawable_size = glx_dri3_set_drawable_size,
186 .in_current_context = glx_dri3_in_current_context,
187 .get_dri_context = glx_dri3_get_dri_context,
188 .get_dri_screen = glx_dri3_get_dri_screen,
189 .flush_drawable = glx_dri3_flush_drawable,
190 .show_fps = glx_dri3_show_fps,
191 };
192
193
194 static const struct glx_context_vtable dri3_context_vtable;
195
196 static void
dri3_destroy_context(struct glx_context * context)197 dri3_destroy_context(struct glx_context *context)
198 {
199 struct dri3_context *pcp = (struct dri3_context *) context;
200 struct dri3_screen *psc = (struct dri3_screen *) context->psc;
201
202 driReleaseDrawables(&pcp->base);
203
204 free((char *) context->extensions);
205
206 (*psc->core->destroyContext) (pcp->driContext);
207
208 free(pcp);
209 }
210
211 static Bool
dri3_bind_context(struct glx_context * context,struct glx_context * old,GLXDrawable draw,GLXDrawable read)212 dri3_bind_context(struct glx_context *context, struct glx_context *old,
213 GLXDrawable draw, GLXDrawable read)
214 {
215 struct dri3_context *pcp = (struct dri3_context *) context;
216 struct dri3_screen *psc = (struct dri3_screen *) pcp->base.psc;
217 struct dri3_drawable *pdraw, *pread;
218 __DRIdrawable *dri_draw = NULL, *dri_read = NULL;
219
220 pdraw = (struct dri3_drawable *) driFetchDrawable(context, draw);
221 pread = (struct dri3_drawable *) driFetchDrawable(context, read);
222
223 driReleaseDrawables(&pcp->base);
224
225 if (pdraw)
226 dri_draw = pdraw->loader_drawable.dri_drawable;
227 else if (draw != None)
228 return GLXBadDrawable;
229
230 if (pread)
231 dri_read = pread->loader_drawable.dri_drawable;
232 else if (read != None)
233 return GLXBadDrawable;
234
235 if (!(*psc->core->bindContext) (pcp->driContext, dri_draw, dri_read))
236 return GLXBadContext;
237
238 return Success;
239 }
240
241 static void
dri3_unbind_context(struct glx_context * context,struct glx_context * new)242 dri3_unbind_context(struct glx_context *context, struct glx_context *new)
243 {
244 struct dri3_context *pcp = (struct dri3_context *) context;
245 struct dri3_screen *psc = (struct dri3_screen *) pcp->base.psc;
246
247 (*psc->core->unbindContext) (pcp->driContext);
248 }
249
250 static struct glx_context *
dri3_create_context_attribs(struct glx_screen * base,struct glx_config * config_base,struct glx_context * shareList,unsigned num_attribs,const uint32_t * attribs,unsigned * error)251 dri3_create_context_attribs(struct glx_screen *base,
252 struct glx_config *config_base,
253 struct glx_context *shareList,
254 unsigned num_attribs,
255 const uint32_t *attribs,
256 unsigned *error)
257 {
258 struct dri3_context *pcp = NULL;
259 struct dri3_context *pcp_shared = NULL;
260 struct dri3_screen *psc = (struct dri3_screen *) base;
261 __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
262 __DRIcontext *shared = NULL;
263
264 uint32_t minor_ver = 1;
265 uint32_t major_ver = 2;
266 uint32_t flags = 0;
267 unsigned api;
268 int reset = __DRI_CTX_RESET_NO_NOTIFICATION;
269 uint32_t ctx_attribs[2 * 5];
270 unsigned num_ctx_attribs = 0;
271 uint32_t render_type;
272
273 /* Remap the GLX tokens to DRI2 tokens.
274 */
275 if (!dri2_convert_glx_attribs(num_attribs, attribs,
276 &major_ver, &minor_ver,
277 &render_type, &flags, &api,
278 &reset, error))
279 goto error_exit;
280
281 /* Check the renderType value */
282 if (!validate_renderType_against_config(config_base, render_type))
283 goto error_exit;
284
285 if (shareList) {
286 pcp_shared = (struct dri3_context *) shareList;
287 shared = pcp_shared->driContext;
288 }
289
290 pcp = calloc(1, sizeof *pcp);
291 if (pcp == NULL) {
292 *error = __DRI_CTX_ERROR_NO_MEMORY;
293 goto error_exit;
294 }
295
296 if (!glx_context_init(&pcp->base, &psc->base, &config->base))
297 goto error_exit;
298
299 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MAJOR_VERSION;
300 ctx_attribs[num_ctx_attribs++] = major_ver;
301 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_MINOR_VERSION;
302 ctx_attribs[num_ctx_attribs++] = minor_ver;
303
304 /* Only send a value when the non-default value is requested. By doing
305 * this we don't have to check the driver's DRI3 version before sending the
306 * default value.
307 */
308 if (reset != __DRI_CTX_RESET_NO_NOTIFICATION) {
309 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_RESET_STRATEGY;
310 ctx_attribs[num_ctx_attribs++] = reset;
311 }
312
313 if (flags != 0) {
314 ctx_attribs[num_ctx_attribs++] = __DRI_CTX_ATTRIB_FLAGS;
315
316 /* The current __DRI_CTX_FLAG_* values are identical to the
317 * GLX_CONTEXT_*_BIT values.
318 */
319 ctx_attribs[num_ctx_attribs++] = flags;
320 }
321
322 pcp->driContext =
323 (*psc->image_driver->createContextAttribs) (psc->driScreen,
324 api,
325 config->driConfig,
326 shared,
327 num_ctx_attribs / 2,
328 ctx_attribs,
329 error,
330 pcp);
331
332 if (pcp->driContext == NULL)
333 goto error_exit;
334
335 pcp->base.vtable = &dri3_context_vtable;
336
337 return &pcp->base;
338
339 error_exit:
340 free(pcp);
341
342 return NULL;
343 }
344
345 static struct glx_context *
dri3_create_context(struct glx_screen * base,struct glx_config * config_base,struct glx_context * shareList,int renderType)346 dri3_create_context(struct glx_screen *base,
347 struct glx_config *config_base,
348 struct glx_context *shareList, int renderType)
349 {
350 unsigned int error;
351
352 return dri3_create_context_attribs(base, config_base, shareList,
353 0, NULL, &error);
354 }
355
356 static void
dri3_destroy_drawable(__GLXDRIdrawable * base)357 dri3_destroy_drawable(__GLXDRIdrawable *base)
358 {
359 struct dri3_drawable *pdraw = (struct dri3_drawable *) base;
360
361 loader_dri3_drawable_fini(&pdraw->loader_drawable);
362
363 free(pdraw);
364 }
365
366 static __GLXDRIdrawable *
dri3_create_drawable(struct glx_screen * base,XID xDrawable,GLXDrawable drawable,struct glx_config * config_base)367 dri3_create_drawable(struct glx_screen *base, XID xDrawable,
368 GLXDrawable drawable, struct glx_config *config_base)
369 {
370 struct dri3_drawable *pdraw;
371 struct dri3_screen *psc = (struct dri3_screen *) base;
372 __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) config_base;
373
374 pdraw = calloc(1, sizeof(*pdraw));
375 if (!pdraw)
376 return NULL;
377
378 pdraw->base.destroyDrawable = dri3_destroy_drawable;
379 pdraw->base.xDrawable = xDrawable;
380 pdraw->base.drawable = drawable;
381 pdraw->base.psc = &psc->base;
382
383 (void) __glXInitialize(psc->base.dpy);
384
385 if (loader_dri3_drawable_init(XGetXCBConnection(base->dpy),
386 xDrawable, psc->driScreen,
387 psc->is_different_gpu, config->driConfig,
388 &psc->loader_dri3_ext, &glx_dri3_vtable,
389 &pdraw->loader_drawable)) {
390 free(pdraw);
391 return NULL;
392 }
393
394 return &pdraw->base;
395 }
396
397 /** dri3_wait_for_msc
398 *
399 * Get the X server to send an event when the target msc/divisor/remainder is
400 * reached.
401 */
402 static int
dri3_wait_for_msc(__GLXDRIdrawable * pdraw,int64_t target_msc,int64_t divisor,int64_t remainder,int64_t * ust,int64_t * msc,int64_t * sbc)403 dri3_wait_for_msc(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
404 int64_t remainder, int64_t *ust, int64_t *msc, int64_t *sbc)
405 {
406 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
407
408 loader_dri3_wait_for_msc(&priv->loader_drawable, target_msc, divisor,
409 remainder, ust, msc, sbc);
410
411 return 1;
412 }
413
414 /** dri3_drawable_get_msc
415 *
416 * Return the current UST/MSC/SBC triplet by asking the server
417 * for an event
418 */
419 static int
dri3_drawable_get_msc(struct glx_screen * psc,__GLXDRIdrawable * pdraw,int64_t * ust,int64_t * msc,int64_t * sbc)420 dri3_drawable_get_msc(struct glx_screen *psc, __GLXDRIdrawable *pdraw,
421 int64_t *ust, int64_t *msc, int64_t *sbc)
422 {
423 return dri3_wait_for_msc(pdraw, 0, 0, 0, ust, msc,sbc);
424 }
425
426 /** dri3_wait_for_sbc
427 *
428 * Wait for the completed swap buffer count to reach the specified
429 * target. Presumably the application knows that this will be reached with
430 * outstanding complete events, or we're going to be here awhile.
431 */
432 static int
dri3_wait_for_sbc(__GLXDRIdrawable * pdraw,int64_t target_sbc,int64_t * ust,int64_t * msc,int64_t * sbc)433 dri3_wait_for_sbc(__GLXDRIdrawable *pdraw, int64_t target_sbc, int64_t *ust,
434 int64_t *msc, int64_t *sbc)
435 {
436 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
437
438 return loader_dri3_wait_for_sbc(&priv->loader_drawable, target_sbc,
439 ust, msc, sbc);
440 }
441
442 static void
dri3_copy_sub_buffer(__GLXDRIdrawable * pdraw,int x,int y,int width,int height,Bool flush)443 dri3_copy_sub_buffer(__GLXDRIdrawable *pdraw, int x, int y,
444 int width, int height,
445 Bool flush)
446 {
447 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
448
449 loader_dri3_copy_sub_buffer(&priv->loader_drawable, x, y,
450 width, height, flush);
451 }
452
453 static void
dri3_wait_x(struct glx_context * gc)454 dri3_wait_x(struct glx_context *gc)
455 {
456 struct dri3_drawable *priv = (struct dri3_drawable *)
457 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
458
459 if (priv)
460 loader_dri3_wait_x(&priv->loader_drawable);
461 }
462
463 static void
dri3_wait_gl(struct glx_context * gc)464 dri3_wait_gl(struct glx_context *gc)
465 {
466 struct dri3_drawable *priv = (struct dri3_drawable *)
467 GetGLXDRIDrawable(gc->currentDpy, gc->currentDrawable);
468
469 if (priv)
470 loader_dri3_wait_gl(&priv->loader_drawable);
471 }
472
473 /**
474 * Called by the driver when it needs to update the real front buffer with the
475 * contents of its fake front buffer.
476 */
477 static void
dri3_flush_front_buffer(__DRIdrawable * driDrawable,void * loaderPrivate)478 dri3_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
479 {
480 struct loader_dri3_drawable *draw = loaderPrivate;
481 struct dri3_drawable *pdraw = loader_drawable_to_dri3_drawable(draw);
482 struct dri3_screen *psc;
483
484 if (!pdraw)
485 return;
486
487 if (!pdraw->base.psc)
488 return;
489
490 psc = (struct dri3_screen *) pdraw->base.psc;
491
492 (void) __glXInitialize(psc->base.dpy);
493
494 loader_dri3_flush(draw, __DRI2_FLUSH_DRAWABLE, __DRI2_THROTTLE_FLUSHFRONT);
495
496 loader_dri3_wait_gl(draw);
497 }
498
499 /* The image loader extension record for DRI3
500 */
501 static const __DRIimageLoaderExtension imageLoaderExtension = {
502 .base = { __DRI_IMAGE_LOADER, 1 },
503
504 .getBuffers = loader_dri3_get_buffers,
505 .flushFrontBuffer = dri3_flush_front_buffer,
506 };
507
508 const __DRIuseInvalidateExtension dri3UseInvalidate = {
509 .base = { __DRI_USE_INVALIDATE, 1 }
510 };
511
512 static const __DRIextension *loader_extensions[] = {
513 &imageLoaderExtension.base,
514 &systemTimeExtension.base,
515 &dri3UseInvalidate.base,
516 NULL
517 };
518
519 /** dri3_swap_buffers
520 *
521 * Make the current back buffer visible using the present extension
522 */
523 static int64_t
dri3_swap_buffers(__GLXDRIdrawable * pdraw,int64_t target_msc,int64_t divisor,int64_t remainder,Bool flush)524 dri3_swap_buffers(__GLXDRIdrawable *pdraw, int64_t target_msc, int64_t divisor,
525 int64_t remainder, Bool flush)
526 {
527 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
528 unsigned flags = __DRI2_FLUSH_DRAWABLE;
529
530 if (flush)
531 flags |= __DRI2_FLUSH_CONTEXT;
532
533 return loader_dri3_swap_buffers_msc(&priv->loader_drawable,
534 target_msc, divisor, remainder,
535 flags, false);
536 }
537
538 static int
dri3_get_buffer_age(__GLXDRIdrawable * pdraw)539 dri3_get_buffer_age(__GLXDRIdrawable *pdraw)
540 {
541 struct dri3_drawable *priv = (struct dri3_drawable *)pdraw;
542
543 return loader_dri3_query_buffer_age(&priv->loader_drawable);
544 }
545
546 /** dri3_destroy_screen
547 */
548 static void
dri3_destroy_screen(struct glx_screen * base)549 dri3_destroy_screen(struct glx_screen *base)
550 {
551 struct dri3_screen *psc = (struct dri3_screen *) base;
552
553 /* Free the direct rendering per screen data */
554 (*psc->core->destroyScreen) (psc->driScreen);
555 driDestroyConfigs(psc->driver_configs);
556 close(psc->fd);
557 free(psc);
558 }
559
560 /** dri3_set_swap_interval
561 *
562 * Record the application swap interval specification,
563 */
564 static int
dri3_set_swap_interval(__GLXDRIdrawable * pdraw,int interval)565 dri3_set_swap_interval(__GLXDRIdrawable *pdraw, int interval)
566 {
567 assert(pdraw != NULL);
568
569 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
570 GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
571 struct dri3_screen *psc = (struct dri3_screen *) priv->base.psc;
572
573 if (psc->config)
574 psc->config->configQueryi(psc->driScreen,
575 "vblank_mode", &vblank_mode);
576
577 switch (vblank_mode) {
578 case DRI_CONF_VBLANK_NEVER:
579 if (interval != 0)
580 return GLX_BAD_VALUE;
581 break;
582 case DRI_CONF_VBLANK_ALWAYS_SYNC:
583 if (interval <= 0)
584 return GLX_BAD_VALUE;
585 break;
586 default:
587 break;
588 }
589
590 loader_dri3_set_swap_interval(&priv->loader_drawable, interval);
591
592 return 0;
593 }
594
595 /** dri3_get_swap_interval
596 *
597 * Return the stored swap interval
598 */
599 static int
dri3_get_swap_interval(__GLXDRIdrawable * pdraw)600 dri3_get_swap_interval(__GLXDRIdrawable *pdraw)
601 {
602 assert(pdraw != NULL);
603
604 struct dri3_drawable *priv = (struct dri3_drawable *) pdraw;
605
606 return priv->swap_interval;
607 }
608
609 static void
dri3_bind_tex_image(Display * dpy,GLXDrawable drawable,int buffer,const int * attrib_list)610 dri3_bind_tex_image(Display * dpy,
611 GLXDrawable drawable,
612 int buffer, const int *attrib_list)
613 {
614 struct glx_context *gc = __glXGetCurrentContext();
615 struct dri3_context *pcp = (struct dri3_context *) gc;
616 __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
617 struct dri3_drawable *pdraw = (struct dri3_drawable *) base;
618 struct dri3_screen *psc;
619
620 if (pdraw != NULL) {
621 psc = (struct dri3_screen *) base->psc;
622
623 (*psc->f->invalidate)(pdraw->loader_drawable.dri_drawable);
624
625 XSync(dpy, false);
626
627 (*psc->texBuffer->setTexBuffer2) (pcp->driContext,
628 pdraw->base.textureTarget,
629 pdraw->base.textureFormat,
630 pdraw->loader_drawable.dri_drawable);
631 }
632 }
633
634 static void
dri3_release_tex_image(Display * dpy,GLXDrawable drawable,int buffer)635 dri3_release_tex_image(Display * dpy, GLXDrawable drawable, int buffer)
636 {
637 struct glx_context *gc = __glXGetCurrentContext();
638 struct dri3_context *pcp = (struct dri3_context *) gc;
639 __GLXDRIdrawable *base = GetGLXDRIDrawable(dpy, drawable);
640 struct dri3_drawable *pdraw = (struct dri3_drawable *) base;
641 struct dri3_screen *psc;
642
643 if (pdraw != NULL) {
644 psc = (struct dri3_screen *) base->psc;
645
646 if (psc->texBuffer->base.version >= 3 &&
647 psc->texBuffer->releaseTexBuffer != NULL)
648 (*psc->texBuffer->releaseTexBuffer) (pcp->driContext,
649 pdraw->base.textureTarget,
650 pdraw->loader_drawable.dri_drawable);
651 }
652 }
653
654 static const struct glx_context_vtable dri3_context_vtable = {
655 .destroy = dri3_destroy_context,
656 .bind = dri3_bind_context,
657 .unbind = dri3_unbind_context,
658 .wait_gl = dri3_wait_gl,
659 .wait_x = dri3_wait_x,
660 .use_x_font = DRI_glXUseXFont,
661 .bind_tex_image = dri3_bind_tex_image,
662 .release_tex_image = dri3_release_tex_image,
663 .get_proc_address = NULL,
664 .interop_query_device_info = dri3_interop_query_device_info,
665 .interop_export_object = dri3_interop_export_object
666 };
667
668 /** dri3_bind_extensions
669 *
670 * Enable all of the extensions supported on DRI3
671 */
672 static void
dri3_bind_extensions(struct dri3_screen * psc,struct glx_display * priv,const char * driverName)673 dri3_bind_extensions(struct dri3_screen *psc, struct glx_display * priv,
674 const char *driverName)
675 {
676 const __DRIextension **extensions;
677 unsigned mask;
678 int i;
679
680 extensions = psc->core->getExtensions(psc->driScreen);
681
682 __glXEnableDirectExtension(&psc->base, "GLX_SGI_video_sync");
683 __glXEnableDirectExtension(&psc->base, "GLX_SGI_swap_control");
684 __glXEnableDirectExtension(&psc->base, "GLX_MESA_swap_control");
685 __glXEnableDirectExtension(&psc->base, "GLX_SGI_make_current_read");
686 __glXEnableDirectExtension(&psc->base, "GLX_INTEL_swap_event");
687
688 mask = psc->image_driver->getAPIMask(psc->driScreen);
689
690 __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context");
691 __glXEnableDirectExtension(&psc->base, "GLX_ARB_create_context_profile");
692
693 if ((mask & ((1 << __DRI_API_GLES) |
694 (1 << __DRI_API_GLES2) |
695 (1 << __DRI_API_GLES3))) != 0) {
696 __glXEnableDirectExtension(&psc->base,
697 "GLX_EXT_create_context_es_profile");
698 __glXEnableDirectExtension(&psc->base,
699 "GLX_EXT_create_context_es2_profile");
700 }
701
702 for (i = 0; extensions[i]; i++) {
703 /* when on a different gpu than the server, the server pixmaps
704 * can have a tiling mode we can't read. Thus we can't create
705 * a texture from them.
706 */
707 if (!psc->is_different_gpu &&
708 (strcmp(extensions[i]->name, __DRI_TEX_BUFFER) == 0)) {
709 psc->texBuffer = (__DRItexBufferExtension *) extensions[i];
710 __glXEnableDirectExtension(&psc->base, "GLX_EXT_texture_from_pixmap");
711 }
712
713 if ((strcmp(extensions[i]->name, __DRI2_FLUSH) == 0)) {
714 psc->f = (__DRI2flushExtension *) extensions[i];
715 /* internal driver extension, no GL extension exposed */
716 }
717
718 if (strcmp(extensions[i]->name, __DRI_IMAGE) == 0)
719 psc->image = (__DRIimageExtension *) extensions[i];
720
721 if ((strcmp(extensions[i]->name, __DRI2_CONFIG_QUERY) == 0))
722 psc->config = (__DRI2configQueryExtension *) extensions[i];
723
724 if (strcmp(extensions[i]->name, __DRI2_ROBUSTNESS) == 0)
725 __glXEnableDirectExtension(&psc->base,
726 "GLX_ARB_create_context_robustness");
727
728 if (strcmp(extensions[i]->name, __DRI2_RENDERER_QUERY) == 0) {
729 psc->rendererQuery = (__DRI2rendererQueryExtension *) extensions[i];
730 __glXEnableDirectExtension(&psc->base, "GLX_MESA_query_renderer");
731 }
732
733 if (strcmp(extensions[i]->name, __DRI2_INTEROP) == 0)
734 psc->interop = (__DRI2interopExtension*)extensions[i];
735 }
736 }
737
738 static const struct glx_screen_vtable dri3_screen_vtable = {
739 .create_context = dri3_create_context,
740 .create_context_attribs = dri3_create_context_attribs,
741 .query_renderer_integer = dri3_query_renderer_integer,
742 .query_renderer_string = dri3_query_renderer_string,
743 };
744
745 /** dri3_create_screen
746 *
747 * Initialize DRI3 on the specified screen.
748 *
749 * Opens the DRI device, locates the appropriate DRI driver
750 * and loads that.
751 *
752 * Checks to see if the driver supports the necessary extensions
753 *
754 * Initializes the driver for the screen and sets up our structures
755 */
756
757 static struct glx_screen *
dri3_create_screen(int screen,struct glx_display * priv)758 dri3_create_screen(int screen, struct glx_display * priv)
759 {
760 xcb_connection_t *c = XGetXCBConnection(priv->dpy);
761 const __DRIconfig **driver_configs;
762 const __DRIextension **extensions;
763 const struct dri3_display *const pdp = (struct dri3_display *)
764 priv->dri3Display;
765 struct dri3_screen *psc;
766 __GLXDRIscreen *psp;
767 struct glx_config *configs = NULL, *visuals = NULL;
768 char *driverName, *deviceName, *tmp;
769 int i;
770
771 psc = calloc(1, sizeof *psc);
772 if (psc == NULL)
773 return NULL;
774
775 psc->fd = -1;
776
777 if (!glx_screen_init(&psc->base, screen, priv)) {
778 free(psc);
779 return NULL;
780 }
781
782 psc->fd = loader_dri3_open(c, RootWindow(priv->dpy, screen), None);
783 if (psc->fd < 0) {
784 int conn_error = xcb_connection_has_error(c);
785
786 glx_screen_cleanup(&psc->base);
787 free(psc);
788 InfoMessageF("screen %d does not appear to be DRI3 capable\n", screen);
789
790 if (conn_error)
791 ErrorMessageF("Connection closed during DRI3 initialization failure");
792
793 return NULL;
794 }
795
796 psc->fd = loader_get_user_preferred_fd(psc->fd, &psc->is_different_gpu);
797 deviceName = NULL;
798
799 driverName = loader_get_driver_for_fd(psc->fd);
800 if (!driverName) {
801 ErrorMessageF("No driver found\n");
802 goto handle_error;
803 }
804
805 psc->driver = driOpenDriver(driverName);
806 if (psc->driver == NULL) {
807 ErrorMessageF("driver pointer missing\n");
808 goto handle_error;
809 }
810
811 extensions = driGetDriverExtensions(psc->driver, driverName);
812 if (extensions == NULL)
813 goto handle_error;
814
815 for (i = 0; extensions[i]; i++) {
816 if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
817 psc->core = (__DRIcoreExtension *) extensions[i];
818 if (strcmp(extensions[i]->name, __DRI_IMAGE_DRIVER) == 0)
819 psc->image_driver = (__DRIimageDriverExtension *) extensions[i];
820 }
821
822
823 if (psc->core == NULL) {
824 ErrorMessageF("core dri driver extension not found\n");
825 goto handle_error;
826 }
827
828 if (psc->image_driver == NULL) {
829 ErrorMessageF("image driver extension not found\n");
830 goto handle_error;
831 }
832
833 psc->driScreen =
834 psc->image_driver->createNewScreen2(screen, psc->fd,
835 pdp->loader_extensions,
836 extensions,
837 &driver_configs, psc);
838
839 if (psc->driScreen == NULL) {
840 ErrorMessageF("failed to create dri screen\n");
841 goto handle_error;
842 }
843
844 dri3_bind_extensions(psc, priv, driverName);
845
846 if (!psc->image || psc->image->base.version < 7 || !psc->image->createImageFromFds) {
847 ErrorMessageF("Version 7 or imageFromFds image extension not found\n");
848 goto handle_error;
849 }
850
851 if (!psc->f || psc->f->base.version < 4) {
852 ErrorMessageF("Version 4 or later of flush extension not found\n");
853 goto handle_error;
854 }
855
856 if (psc->is_different_gpu && psc->image->base.version < 9) {
857 ErrorMessageF("Different GPU, but image extension version 9 or later not found\n");
858 goto handle_error;
859 }
860
861 if (psc->is_different_gpu && !psc->image->blitImage) {
862 ErrorMessageF("Different GPU, but blitImage not implemented for this driver\n");
863 goto handle_error;
864 }
865
866 if (!psc->is_different_gpu && (
867 !psc->texBuffer || psc->texBuffer->base.version < 2 ||
868 !psc->texBuffer->setTexBuffer2
869 )) {
870 ErrorMessageF("Version 2 or later of texBuffer extension not found\n");
871 goto handle_error;
872 }
873
874 psc->loader_dri3_ext.core = psc->core;
875 psc->loader_dri3_ext.image_driver = psc->image_driver;
876 psc->loader_dri3_ext.flush = psc->f;
877 psc->loader_dri3_ext.tex_buffer = psc->texBuffer;
878 psc->loader_dri3_ext.image = psc->image;
879 psc->loader_dri3_ext.config = psc->config;
880
881 configs = driConvertConfigs(psc->core, psc->base.configs, driver_configs);
882 visuals = driConvertConfigs(psc->core, psc->base.visuals, driver_configs);
883
884 if (!configs || !visuals) {
885 ErrorMessageF("No matching fbConfigs or visuals found\n");
886 goto handle_error;
887 }
888
889 glx_config_destroy_list(psc->base.configs);
890 psc->base.configs = configs;
891 glx_config_destroy_list(psc->base.visuals);
892 psc->base.visuals = visuals;
893
894 psc->driver_configs = driver_configs;
895
896 psc->base.vtable = &dri3_screen_vtable;
897 psp = &psc->vtable;
898 psc->base.driScreen = psp;
899 psp->destroyScreen = dri3_destroy_screen;
900 psp->createDrawable = dri3_create_drawable;
901 psp->swapBuffers = dri3_swap_buffers;
902
903 psp->getDrawableMSC = dri3_drawable_get_msc;
904 psp->waitForMSC = dri3_wait_for_msc;
905 psp->waitForSBC = dri3_wait_for_sbc;
906 psp->setSwapInterval = dri3_set_swap_interval;
907 psp->getSwapInterval = dri3_get_swap_interval;
908 __glXEnableDirectExtension(&psc->base, "GLX_OML_sync_control");
909
910 psp->copySubBuffer = dri3_copy_sub_buffer;
911 __glXEnableDirectExtension(&psc->base, "GLX_MESA_copy_sub_buffer");
912
913 psp->getBufferAge = dri3_get_buffer_age;
914 __glXEnableDirectExtension(&psc->base, "GLX_EXT_buffer_age");
915
916 free(driverName);
917 free(deviceName);
918
919 tmp = getenv("LIBGL_SHOW_FPS");
920 psc->show_fps_interval = tmp ? atoi(tmp) : 0;
921 if (psc->show_fps_interval < 0)
922 psc->show_fps_interval = 0;
923
924 InfoMessageF("Using DRI3 for screen %d\n", screen);
925
926 return &psc->base;
927
928 handle_error:
929 CriticalErrorMessageF("failed to load driver: %s\n", driverName);
930
931 if (configs)
932 glx_config_destroy_list(configs);
933 if (visuals)
934 glx_config_destroy_list(visuals);
935 if (psc->driScreen)
936 psc->core->destroyScreen(psc->driScreen);
937 psc->driScreen = NULL;
938 if (psc->fd >= 0)
939 close(psc->fd);
940 if (psc->driver)
941 dlclose(psc->driver);
942
943 free(driverName);
944 free(deviceName);
945 glx_screen_cleanup(&psc->base);
946 free(psc);
947
948 return NULL;
949 }
950
951 /** dri_destroy_display
952 *
953 * Called from __glXFreeDisplayPrivate.
954 */
955 static void
dri3_destroy_display(__GLXDRIdisplay * dpy)956 dri3_destroy_display(__GLXDRIdisplay * dpy)
957 {
958 free(dpy);
959 }
960
961 /** dri3_create_display
962 *
963 * Allocate, initialize and return a __DRIdisplayPrivate object.
964 * This is called from __glXInitialize() when we are given a new
965 * display pointer. This is public to that function, but hidden from
966 * outside of libGL.
967 */
968 _X_HIDDEN __GLXDRIdisplay *
dri3_create_display(Display * dpy)969 dri3_create_display(Display * dpy)
970 {
971 struct dri3_display *pdp;
972 xcb_connection_t *c = XGetXCBConnection(dpy);
973 xcb_dri3_query_version_cookie_t dri3_cookie;
974 xcb_dri3_query_version_reply_t *dri3_reply;
975 xcb_present_query_version_cookie_t present_cookie;
976 xcb_present_query_version_reply_t *present_reply;
977 xcb_generic_error_t *error;
978 const xcb_query_extension_reply_t *extension;
979
980 xcb_prefetch_extension_data(c, &xcb_dri3_id);
981 xcb_prefetch_extension_data(c, &xcb_present_id);
982
983 extension = xcb_get_extension_data(c, &xcb_dri3_id);
984 if (!(extension && extension->present))
985 return NULL;
986
987 extension = xcb_get_extension_data(c, &xcb_present_id);
988 if (!(extension && extension->present))
989 return NULL;
990
991 dri3_cookie = xcb_dri3_query_version(c,
992 XCB_DRI3_MAJOR_VERSION,
993 XCB_DRI3_MINOR_VERSION);
994
995
996 present_cookie = xcb_present_query_version(c,
997 XCB_PRESENT_MAJOR_VERSION,
998 XCB_PRESENT_MINOR_VERSION);
999
1000 pdp = malloc(sizeof *pdp);
1001 if (pdp == NULL)
1002 return NULL;
1003
1004 dri3_reply = xcb_dri3_query_version_reply(c, dri3_cookie, &error);
1005 if (!dri3_reply) {
1006 free(error);
1007 goto no_extension;
1008 }
1009
1010 pdp->dri3Major = dri3_reply->major_version;
1011 pdp->dri3Minor = dri3_reply->minor_version;
1012 free(dri3_reply);
1013
1014 present_reply = xcb_present_query_version_reply(c, present_cookie, &error);
1015 if (!present_reply) {
1016 free(error);
1017 goto no_extension;
1018 }
1019 pdp->presentMajor = present_reply->major_version;
1020 pdp->presentMinor = present_reply->minor_version;
1021 free(present_reply);
1022
1023 pdp->base.destroyDisplay = dri3_destroy_display;
1024 pdp->base.createScreen = dri3_create_screen;
1025
1026 loader_set_logger(dri_message);
1027
1028 pdp->loader_extensions = loader_extensions;
1029
1030 return &pdp->base;
1031 no_extension:
1032 free(pdp);
1033 return NULL;
1034 }
1035
1036 #endif /* GLX_DIRECT_RENDERING */
1037