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2d5b71746e884c1cb06c317f3bce61324b571853
[mesa.git] / src / egl / drivers / dri2 / platform_x11.c
1 /*
2 * Copyright © 2011 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Kristian Høgsberg <krh@bitplanet.net>
26 */
27
28 #include <stdbool.h>
29 #include <stdint.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <stdio.h>
33 #include <limits.h>
34 #include <dlfcn.h>
35 #include <fcntl.h>
36 #include <errno.h>
37 #include <unistd.h>
38 #ifdef HAVE_LIBDRM
39 #include <xf86drm.h>
40 #endif
41 #include <sys/types.h>
42 #include <sys/stat.h>
43
44 #include "egl_dri2.h"
45 #include "egl_dri2_fallbacks.h"
46
47 static EGLBoolean
48 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
49 EGLint interval);
50
51 static void
52 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
53 struct dri2_egl_surface * dri2_surf)
54 {
55 uint32_t mask;
56 const uint32_t function = GXcopy;
57 uint32_t valgc[2];
58
59 /* create GC's */
60 dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
61 mask = XCB_GC_FUNCTION;
62 xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
63
64 dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
65 mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
66 valgc[0] = function;
67 valgc[1] = False;
68 xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
69 switch (dri2_surf->depth) {
70 case 32:
71 case 24:
72 dri2_surf->bytes_per_pixel = 4;
73 break;
74 case 16:
75 dri2_surf->bytes_per_pixel = 2;
76 break;
77 case 8:
78 dri2_surf->bytes_per_pixel = 1;
79 break;
80 case 0:
81 dri2_surf->bytes_per_pixel = 0;
82 break;
83 default:
84 _eglLog(_EGL_WARNING, "unsupported depth %d", dri2_surf->depth);
85 }
86 }
87
88 static void
89 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
90 struct dri2_egl_surface * dri2_surf)
91 {
92 xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
93 xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
94 }
95
96 static void
97 swrastGetDrawableInfo(__DRIdrawable * draw,
98 int *x, int *y, int *w, int *h,
99 void *loaderPrivate)
100 {
101 struct dri2_egl_surface *dri2_surf = loaderPrivate;
102 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
103
104 xcb_get_geometry_cookie_t cookie;
105 xcb_get_geometry_reply_t *reply;
106 xcb_generic_error_t *error;
107
108 *w = *h = 0;
109 cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
110 reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
111 if (reply == NULL)
112 return;
113
114 if (error != NULL) {
115 _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
116 free(error);
117 } else {
118 *w = reply->width;
119 *h = reply->height;
120 }
121 free(reply);
122 }
123
124 static void
125 swrastPutImage(__DRIdrawable * draw, int op,
126 int x, int y, int w, int h,
127 char *data, void *loaderPrivate)
128 {
129 struct dri2_egl_surface *dri2_surf = loaderPrivate;
130 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
131
132 xcb_gcontext_t gc;
133
134 switch (op) {
135 case __DRI_SWRAST_IMAGE_OP_DRAW:
136 gc = dri2_surf->gc;
137 break;
138 case __DRI_SWRAST_IMAGE_OP_SWAP:
139 gc = dri2_surf->swapgc;
140 break;
141 default:
142 return;
143 }
144
145 xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
146 gc, w, h, x, y, 0, dri2_surf->depth,
147 w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
148 }
149
150 static void
151 swrastGetImage(__DRIdrawable * read,
152 int x, int y, int w, int h,
153 char *data, void *loaderPrivate)
154 {
155 struct dri2_egl_surface *dri2_surf = loaderPrivate;
156 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
157
158 xcb_get_image_cookie_t cookie;
159 xcb_get_image_reply_t *reply;
160 xcb_generic_error_t *error;
161
162 cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
163 dri2_surf->drawable, x, y, w, h, ~0);
164 reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
165 if (reply == NULL)
166 return;
167
168 if (error != NULL) {
169 _eglLog(_EGL_WARNING, "error in xcb_get_image");
170 free(error);
171 } else {
172 uint32_t bytes = xcb_get_image_data_length(reply);
173 uint8_t *idata = xcb_get_image_data(reply);
174 memcpy(data, idata, bytes);
175 }
176 free(reply);
177 }
178
179
180 static xcb_screen_t *
181 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
182 {
183 for (; iter.rem; --screen, xcb_screen_next(&iter))
184 if (screen == 0)
185 return iter.data;
186
187 return NULL;
188 }
189
190
191 /**
192 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
193 */
194 static _EGLSurface *
195 dri2_x11_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
196 _EGLConfig *conf, void *native_surface,
197 const EGLint *attrib_list)
198 {
199 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
200 struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
201 struct dri2_egl_surface *dri2_surf;
202 xcb_get_geometry_cookie_t cookie;
203 xcb_get_geometry_reply_t *reply;
204 xcb_screen_iterator_t s;
205 xcb_generic_error_t *error;
206 xcb_drawable_t drawable;
207 xcb_screen_t *screen;
208
209 STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
210 drawable = (uintptr_t) native_surface;
211
212 (void) drv;
213
214 dri2_surf = malloc(sizeof *dri2_surf);
215 if (!dri2_surf) {
216 _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
217 return NULL;
218 }
219
220 if (!_eglInitSurface(&dri2_surf->base, disp, type, conf, attrib_list))
221 goto cleanup_surf;
222
223 dri2_surf->region = XCB_NONE;
224 if (type == EGL_PBUFFER_BIT) {
225 s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
226 screen = get_xcb_screen(s, dri2_dpy->screen);
227 if (!screen) {
228 _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_create_surface");
229 goto cleanup_surf;
230 }
231
232 dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
233 xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
234 dri2_surf->drawable, screen->root,
235 dri2_surf->base.Width, dri2_surf->base.Height);
236 } else {
237 dri2_surf->drawable = drawable;
238 }
239
240 if (dri2_dpy->dri2) {
241 dri2_surf->dri_drawable =
242 (*dri2_dpy->dri2->createNewDrawable) (dri2_dpy->dri_screen,
243 type == EGL_WINDOW_BIT ?
244 dri2_conf->dri_double_config :
245 dri2_conf->dri_single_config,
246 dri2_surf);
247 } else {
248 assert(dri2_dpy->swrast);
249 dri2_surf->dri_drawable =
250 (*dri2_dpy->swrast->createNewDrawable) (dri2_dpy->dri_screen,
251 dri2_conf->dri_double_config,
252 dri2_surf);
253 }
254
255 if (dri2_surf->dri_drawable == NULL) {
256 _eglError(EGL_BAD_ALLOC, "dri2->createNewDrawable");
257 goto cleanup_pixmap;
258 }
259
260 if (type != EGL_PBUFFER_BIT) {
261 cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
262 reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
263 if (reply == NULL || error != NULL) {
264 _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
265 free(error);
266 goto cleanup_dri_drawable;
267 }
268
269 dri2_surf->base.Width = reply->width;
270 dri2_surf->base.Height = reply->height;
271 dri2_surf->depth = reply->depth;
272 free(reply);
273 }
274
275 if (dri2_dpy->dri2) {
276 xcb_dri2_create_drawable (dri2_dpy->conn, dri2_surf->drawable);
277 } else {
278 if (type == EGL_PBUFFER_BIT) {
279 dri2_surf->depth = _eglGetConfigKey(conf, EGL_BUFFER_SIZE);
280 }
281 swrastCreateDrawable(dri2_dpy, dri2_surf);
282 }
283
284 /* we always copy the back buffer to front */
285 dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
286
287 return &dri2_surf->base;
288
289 cleanup_dri_drawable:
290 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
291 cleanup_pixmap:
292 if (type == EGL_PBUFFER_BIT)
293 xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
294 cleanup_surf:
295 free(dri2_surf);
296
297 return NULL;
298 }
299
300 /**
301 * Called via eglCreateWindowSurface(), drv->API.CreateWindowSurface().
302 */
303 static _EGLSurface *
304 dri2_x11_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
305 _EGLConfig *conf, void *native_window,
306 const EGLint *attrib_list)
307 {
308 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
309 _EGLSurface *surf;
310
311 surf = dri2_x11_create_surface(drv, disp, EGL_WINDOW_BIT, conf,
312 native_window, attrib_list);
313 if (surf != NULL) {
314 /* When we first create the DRI2 drawable, its swap interval on the
315 * server side is 1.
316 */
317 surf->SwapInterval = 1;
318
319 /* Override that with a driconf-set value. */
320 dri2_x11_swap_interval(drv, disp, surf, dri2_dpy->default_swap_interval);
321 }
322
323 return surf;
324 }
325
326 static _EGLSurface *
327 dri2_x11_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
328 _EGLConfig *conf, void *native_pixmap,
329 const EGLint *attrib_list)
330 {
331 return dri2_x11_create_surface(drv, disp, EGL_PIXMAP_BIT, conf,
332 native_pixmap, attrib_list);
333 }
334
335 static _EGLSurface *
336 dri2_x11_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
337 _EGLConfig *conf, const EGLint *attrib_list)
338 {
339 return dri2_x11_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
340 XCB_WINDOW_NONE, attrib_list);
341 }
342
343 static EGLBoolean
344 dri2_x11_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
345 {
346 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
347 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
348
349 (void) drv;
350
351 if (!_eglPutSurface(surf))
352 return EGL_TRUE;
353
354 (*dri2_dpy->core->destroyDrawable)(dri2_surf->dri_drawable);
355
356 if (dri2_dpy->dri2) {
357 xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
358 } else {
359 assert(dri2_dpy->swrast);
360 swrastDestroyDrawable(dri2_dpy, dri2_surf);
361 }
362
363 if (surf->Type == EGL_PBUFFER_BIT)
364 xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
365
366 free(surf);
367
368 return EGL_TRUE;
369 }
370
371 /**
372 * Process list of buffer received from the server
373 *
374 * Processes the list of buffers received in a reply from the server to either
375 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
376 */
377 static void
378 dri2_x11_process_buffers(struct dri2_egl_surface *dri2_surf,
379 xcb_dri2_dri2_buffer_t *buffers, unsigned count)
380 {
381 struct dri2_egl_display *dri2_dpy =
382 dri2_egl_display(dri2_surf->base.Resource.Display);
383 xcb_rectangle_t rectangle;
384 unsigned i;
385
386 dri2_surf->buffer_count = count;
387 dri2_surf->have_fake_front = 0;
388
389 /* This assumes the DRI2 buffer attachment tokens matches the
390 * __DRIbuffer tokens. */
391 for (i = 0; i < count; i++) {
392 dri2_surf->buffers[i].attachment = buffers[i].attachment;
393 dri2_surf->buffers[i].name = buffers[i].name;
394 dri2_surf->buffers[i].pitch = buffers[i].pitch;
395 dri2_surf->buffers[i].cpp = buffers[i].cpp;
396 dri2_surf->buffers[i].flags = buffers[i].flags;
397
398 /* We only use the DRI drivers single buffer configs. This
399 * means that if we try to render to a window, DRI2 will give us
400 * the fake front buffer, which we'll use as a back buffer.
401 * Note that EGL doesn't require that several clients rendering
402 * to the same window must see the same aux buffers. */
403 if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
404 dri2_surf->have_fake_front = 1;
405 }
406
407 if (dri2_surf->region != XCB_NONE)
408 xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
409
410 rectangle.x = 0;
411 rectangle.y = 0;
412 rectangle.width = dri2_surf->base.Width;
413 rectangle.height = dri2_surf->base.Height;
414 dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
415 xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
416 }
417
418 static __DRIbuffer *
419 dri2_x11_get_buffers(__DRIdrawable * driDrawable,
420 int *width, int *height,
421 unsigned int *attachments, int count,
422 int *out_count, void *loaderPrivate)
423 {
424 struct dri2_egl_surface *dri2_surf = loaderPrivate;
425 struct dri2_egl_display *dri2_dpy =
426 dri2_egl_display(dri2_surf->base.Resource.Display);
427 xcb_dri2_dri2_buffer_t *buffers;
428 xcb_dri2_get_buffers_reply_t *reply;
429 xcb_dri2_get_buffers_cookie_t cookie;
430
431 (void) driDrawable;
432
433 cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
434 dri2_surf->drawable,
435 count, count, attachments);
436 reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
437 buffers = xcb_dri2_get_buffers_buffers (reply);
438 if (buffers == NULL)
439 return NULL;
440
441 *out_count = reply->count;
442 dri2_surf->base.Width = *width = reply->width;
443 dri2_surf->base.Height = *height = reply->height;
444 dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
445
446 free(reply);
447
448 return dri2_surf->buffers;
449 }
450
451 static __DRIbuffer *
452 dri2_x11_get_buffers_with_format(__DRIdrawable * driDrawable,
453 int *width, int *height,
454 unsigned int *attachments, int count,
455 int *out_count, void *loaderPrivate)
456 {
457 struct dri2_egl_surface *dri2_surf = loaderPrivate;
458 struct dri2_egl_display *dri2_dpy =
459 dri2_egl_display(dri2_surf->base.Resource.Display);
460 xcb_dri2_dri2_buffer_t *buffers;
461 xcb_dri2_get_buffers_with_format_reply_t *reply;
462 xcb_dri2_get_buffers_with_format_cookie_t cookie;
463 xcb_dri2_attach_format_t *format_attachments;
464
465 (void) driDrawable;
466
467 format_attachments = (xcb_dri2_attach_format_t *) attachments;
468 cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
469 dri2_surf->drawable,
470 count, count,
471 format_attachments);
472
473 reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
474 cookie, NULL);
475 if (reply == NULL)
476 return NULL;
477
478 buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
479 dri2_surf->base.Width = *width = reply->width;
480 dri2_surf->base.Height = *height = reply->height;
481 *out_count = reply->count;
482 dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
483
484 free(reply);
485
486 return dri2_surf->buffers;
487 }
488
489 static void
490 dri2_x11_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
491 {
492 (void) driDrawable;
493
494 /* FIXME: Does EGL support front buffer rendering at all? */
495
496 #if 0
497 struct dri2_egl_surface *dri2_surf = loaderPrivate;
498
499 dri2WaitGL(dri2_surf);
500 #else
501 (void) loaderPrivate;
502 #endif
503 }
504
505 static EGLBoolean
506 dri2_x11_connect(struct dri2_egl_display *dri2_dpy)
507 {
508 xcb_xfixes_query_version_reply_t *xfixes_query;
509 xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
510 xcb_dri2_query_version_reply_t *dri2_query;
511 xcb_dri2_query_version_cookie_t dri2_query_cookie;
512 xcb_dri2_connect_reply_t *connect;
513 xcb_dri2_connect_cookie_t connect_cookie;
514 xcb_generic_error_t *error;
515 xcb_screen_iterator_t s;
516 xcb_screen_t *screen;
517 char *driver_name, *device_name;
518 const xcb_query_extension_reply_t *extension;
519
520 xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
521 xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
522
523 extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
524 if (!(extension && extension->present))
525 return EGL_FALSE;
526
527 extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
528 if (!(extension && extension->present))
529 return EGL_FALSE;
530
531 xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
532 XCB_XFIXES_MAJOR_VERSION,
533 XCB_XFIXES_MINOR_VERSION);
534
535 dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
536 XCB_DRI2_MAJOR_VERSION,
537 XCB_DRI2_MINOR_VERSION);
538
539 s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
540 screen = get_xcb_screen(s, dri2_dpy->screen);
541 if (!screen) {
542 _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_x11_connect");
543 return EGL_FALSE;
544 }
545 connect_cookie = xcb_dri2_connect_unchecked(dri2_dpy->conn, screen->root,
546 XCB_DRI2_DRIVER_TYPE_DRI);
547
548 xfixes_query =
549 xcb_xfixes_query_version_reply (dri2_dpy->conn,
550 xfixes_query_cookie, &error);
551 if (xfixes_query == NULL ||
552 error != NULL || xfixes_query->major_version < 2) {
553 _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
554 free(error);
555 return EGL_FALSE;
556 }
557 free(xfixes_query);
558
559 dri2_query =
560 xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
561 if (dri2_query == NULL || error != NULL) {
562 _eglLog(_EGL_WARNING, "DRI2: failed to query version");
563 free(error);
564 return EGL_FALSE;
565 }
566 dri2_dpy->dri2_major = dri2_query->major_version;
567 dri2_dpy->dri2_minor = dri2_query->minor_version;
568 free(dri2_query);
569
570 connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
571 if (connect == NULL ||
572 connect->driver_name_length + connect->device_name_length == 0) {
573 _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
574 return EGL_FALSE;
575 }
576
577 driver_name = xcb_dri2_connect_driver_name (connect);
578 dri2_dpy->driver_name =
579 strndup(driver_name,
580 xcb_dri2_connect_driver_name_length(connect));
581
582 device_name = xcb_dri2_connect_device_name (connect);
583
584 dri2_dpy->device_name =
585 strndup(device_name,
586 xcb_dri2_connect_device_name_length(connect));
587
588 if (dri2_dpy->device_name == NULL || dri2_dpy->driver_name == NULL) {
589 free(dri2_dpy->device_name);
590 free(dri2_dpy->driver_name);
591 free(connect);
592 return EGL_FALSE;
593 }
594 free(connect);
595
596 return EGL_TRUE;
597 }
598
599 static int
600 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
601 {
602 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
603 xcb_dri2_authenticate_reply_t *authenticate;
604 xcb_dri2_authenticate_cookie_t authenticate_cookie;
605 xcb_screen_iterator_t s;
606 xcb_screen_t *screen;
607 int ret = 0;
608
609 s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
610
611 screen = get_xcb_screen(s, dri2_dpy->screen);
612 if (!screen) {
613 _eglError(EGL_BAD_NATIVE_WINDOW, "dri2_x11_authenticate");
614 return -1;
615 }
616
617 authenticate_cookie =
618 xcb_dri2_authenticate_unchecked(dri2_dpy->conn, screen->root, id);
619 authenticate =
620 xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
621
622 if (authenticate == NULL || !authenticate->authenticated)
623 ret = -1;
624
625 free(authenticate);
626
627 return ret;
628 }
629
630 static EGLBoolean
631 dri2_x11_local_authenticate(_EGLDisplay *disp)
632 {
633 #ifdef HAVE_LIBDRM
634 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
635 drm_magic_t magic;
636
637 if (drmGetMagic(dri2_dpy->fd, &magic)) {
638 _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
639 return EGL_FALSE;
640 }
641
642 if (dri2_x11_authenticate(disp, magic) < 0) {
643 _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
644 return EGL_FALSE;
645 }
646 #endif
647 return EGL_TRUE;
648 }
649
650 static EGLBoolean
651 dri2_x11_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
652 _EGLDisplay *disp)
653 {
654 xcb_screen_iterator_t s;
655 xcb_depth_iterator_t d;
656 xcb_visualtype_t *visuals;
657 int i, j, id;
658 unsigned int rgba_masks[4];
659 EGLint surface_type;
660 EGLint config_attrs[] = {
661 EGL_NATIVE_VISUAL_ID, 0,
662 EGL_NATIVE_VISUAL_TYPE, 0,
663 EGL_NONE
664 };
665
666 s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
667 d = xcb_screen_allowed_depths_iterator(get_xcb_screen(s, dri2_dpy->screen));
668 id = 1;
669
670 surface_type =
671 EGL_WINDOW_BIT |
672 EGL_PIXMAP_BIT |
673 EGL_PBUFFER_BIT |
674 EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
675
676 while (d.rem > 0) {
677 EGLBoolean class_added[6] = { 0, };
678
679 visuals = xcb_depth_visuals(d.data);
680 for (i = 0; i < xcb_depth_visuals_length(d.data); i++) {
681 if (class_added[visuals[i]._class])
682 continue;
683
684 class_added[visuals[i]._class] = EGL_TRUE;
685 for (j = 0; dri2_dpy->driver_configs[j]; j++) {
686 config_attrs[1] = visuals[i].visual_id;
687 config_attrs[3] = visuals[i]._class;
688
689 rgba_masks[0] = visuals[i].red_mask;
690 rgba_masks[1] = visuals[i].green_mask;
691 rgba_masks[2] = visuals[i].blue_mask;
692 rgba_masks[3] = 0;
693 dri2_add_config(disp, dri2_dpy->driver_configs[j], id++,
694 surface_type, config_attrs, rgba_masks);
695
696 /* Allow a 24-bit RGB visual to match a 32-bit RGBA EGLConfig.
697 * Otherwise it will only match a 32-bit RGBA visual. On a
698 * composited window manager on X11, this will make all of the
699 * EGLConfigs with destination alpha get blended by the
700 * compositor. This is probably not what the application
701 * wants... especially on drivers that only have 32-bit RGBA
702 * EGLConfigs! */
703 if (d.data->depth == 24) {
704 rgba_masks[3] =
705 ~(rgba_masks[0] | rgba_masks[1] | rgba_masks[2]);
706 dri2_add_config(disp, dri2_dpy->driver_configs[j], id++,
707 surface_type, config_attrs, rgba_masks);
708 }
709 }
710 }
711
712 xcb_depth_next(&d);
713 }
714
715 if (!_eglGetArraySize(disp->Configs)) {
716 _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
717 return EGL_FALSE;
718 }
719
720 return EGL_TRUE;
721 }
722
723 static EGLBoolean
724 dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp,
725 _EGLSurface *draw, xcb_xfixes_region_t region)
726 {
727 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
728 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
729 enum xcb_dri2_attachment_t render_attachment;
730 xcb_dri2_copy_region_cookie_t cookie;
731
732 /* No-op for a pixmap or pbuffer surface */
733 if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
734 return EGL_TRUE;
735
736 if (dri2_dpy->flush)
737 (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
738
739 if (dri2_surf->have_fake_front)
740 render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
741 else
742 render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
743
744 cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
745 dri2_surf->drawable,
746 region,
747 XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
748 render_attachment);
749 free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
750
751 return EGL_TRUE;
752 }
753
754 static int64_t
755 dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
756 int64_t msc, int64_t divisor, int64_t remainder)
757 {
758 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
759 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
760 uint32_t msc_hi = msc >> 32;
761 uint32_t msc_lo = msc & 0xffffffff;
762 uint32_t divisor_hi = divisor >> 32;
763 uint32_t divisor_lo = divisor & 0xffffffff;
764 uint32_t remainder_hi = remainder >> 32;
765 uint32_t remainder_lo = remainder & 0xffffffff;
766 xcb_dri2_swap_buffers_cookie_t cookie;
767 xcb_dri2_swap_buffers_reply_t *reply;
768 int64_t swap_count = -1;
769
770 /* No-op for a pixmap or pbuffer surface */
771 if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
772 return 0;
773
774 if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available)
775 return dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
776
777 dri2_flush_drawable_for_swapbuffers(disp, draw);
778
779 cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn, dri2_surf->drawable,
780 msc_hi, msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo);
781
782 reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
783
784 if (reply) {
785 swap_count = (((int64_t)reply->swap_hi) << 32) | reply->swap_lo;
786 free(reply);
787 }
788
789 /* Since we aren't watching for the server's invalidate events like we're
790 * supposed to (due to XCB providing no mechanism for filtering the events
791 * the way xlib does), and SwapBuffers is a common cause of invalidate
792 * events, just shove one down to the driver, even though we haven't told
793 * the driver that we're the kind of loader that provides reliable
794 * invalidate events. This causes the driver to request buffers again at
795 * its next draw, so that we get the correct buffers if a pageflip
796 * happened. The driver should still be using the viewport hack to catch
797 * window resizes.
798 */
799 if (dri2_dpy->flush &&
800 dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
801 (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable);
802
803 return swap_count;
804 }
805
806 static EGLBoolean
807 dri2_x11_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
808 {
809 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
810 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
811
812 if (dri2_dpy->dri2) {
813 return dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0) != -1;
814 } else {
815 assert(dri2_dpy->swrast);
816
817 dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
818 return EGL_TRUE;
819 }
820 }
821
822 static EGLBoolean
823 dri2_x11_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp,
824 _EGLSurface *draw,
825 EGLint numRects, const EGLint *rects)
826 {
827 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
828 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
829 EGLBoolean ret;
830 xcb_xfixes_region_t region;
831 xcb_rectangle_t rectangles[16];
832 int i;
833
834 if (numRects > (int)ARRAY_SIZE(rectangles))
835 return dri2_copy_region(drv, disp, draw, dri2_surf->region);
836
837 for (i = 0; i < numRects; i++) {
838 rectangles[i].x = rects[i * 4];
839 rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
840 rectangles[i].width = rects[i * 4 + 2];
841 rectangles[i].height = rects[i * 4 + 3];
842 }
843
844 region = xcb_generate_id(dri2_dpy->conn);
845 xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
846 ret = dri2_copy_region(drv, disp, draw, region);
847 xcb_xfixes_destroy_region(dri2_dpy->conn, region);
848
849 return ret;
850 }
851
852 static EGLBoolean
853 dri2_x11_post_sub_buffer(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
854 EGLint x, EGLint y, EGLint width, EGLint height)
855 {
856 const EGLint rect[4] = { x, y, width, height };
857
858 if (x < 0 || y < 0 || width < 0 || height < 0)
859 _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
860
861 return dri2_x11_swap_buffers_region(drv, disp, draw, 1, rect);
862 }
863
864 static EGLBoolean
865 dri2_x11_swap_interval(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
866 EGLint interval)
867 {
868 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
869 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
870
871 if (interval > surf->Config->MaxSwapInterval)
872 interval = surf->Config->MaxSwapInterval;
873 else if (interval < surf->Config->MinSwapInterval)
874 interval = surf->Config->MinSwapInterval;
875
876 if (interval != surf->SwapInterval && dri2_dpy->swap_available)
877 xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
878
879 surf->SwapInterval = interval;
880
881 return EGL_TRUE;
882 }
883
884 static EGLBoolean
885 dri2_x11_copy_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
886 void *native_pixmap_target)
887 {
888 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
889 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
890 xcb_gcontext_t gc;
891 xcb_pixmap_t target;
892
893 STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
894 target = (uintptr_t) native_pixmap_target;
895
896 (void) drv;
897
898 (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
899
900 gc = xcb_generate_id(dri2_dpy->conn);
901 xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
902 xcb_copy_area(dri2_dpy->conn,
903 dri2_surf->drawable,
904 target,
905 gc,
906 0, 0,
907 0, 0,
908 dri2_surf->base.Width,
909 dri2_surf->base.Height);
910 xcb_free_gc(dri2_dpy->conn, gc);
911
912 return EGL_TRUE;
913 }
914
915 static _EGLImage *
916 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
917 EGLClientBuffer buffer, const EGLint *attr_list)
918 {
919 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
920 struct dri2_egl_image *dri2_img;
921 unsigned int attachments[1];
922 xcb_drawable_t drawable;
923 xcb_dri2_get_buffers_cookie_t buffers_cookie;
924 xcb_dri2_get_buffers_reply_t *buffers_reply;
925 xcb_dri2_dri2_buffer_t *buffers;
926 xcb_get_geometry_cookie_t geometry_cookie;
927 xcb_get_geometry_reply_t *geometry_reply;
928 xcb_generic_error_t *error;
929 int stride, format;
930
931 (void) ctx;
932
933 drawable = (xcb_drawable_t) (uintptr_t) buffer;
934 xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
935 attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
936 buffers_cookie =
937 xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
938 drawable, 1, 1, attachments);
939 geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
940 buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
941 buffers_cookie, NULL);
942 buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
943 if (buffers == NULL) {
944 return NULL;
945 }
946
947 geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
948 geometry_cookie, &error);
949 if (geometry_reply == NULL || error != NULL) {
950 _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
951 free(error);
952 free(buffers_reply);
953 return NULL;
954 }
955
956 switch (geometry_reply->depth) {
957 case 16:
958 format = __DRI_IMAGE_FORMAT_RGB565;
959 break;
960 case 24:
961 format = __DRI_IMAGE_FORMAT_XRGB8888;
962 break;
963 case 32:
964 format = __DRI_IMAGE_FORMAT_ARGB8888;
965 break;
966 default:
967 _eglError(EGL_BAD_PARAMETER,
968 "dri2_create_image_khr: unsupported pixmap depth");
969 free(buffers_reply);
970 free(geometry_reply);
971 return NULL;
972 }
973
974 dri2_img = malloc(sizeof *dri2_img);
975 if (!dri2_img) {
976 free(buffers_reply);
977 free(geometry_reply);
978 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
979 return EGL_NO_IMAGE_KHR;
980 }
981
982 if (!_eglInitImage(&dri2_img->base, disp)) {
983 free(buffers_reply);
984 free(geometry_reply);
985 free(dri2_img);
986 return EGL_NO_IMAGE_KHR;
987 }
988
989 stride = buffers[0].pitch / buffers[0].cpp;
990 dri2_img->dri_image =
991 dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
992 buffers_reply->width,
993 buffers_reply->height,
994 format,
995 buffers[0].name,
996 stride,
997 dri2_img);
998
999 free(buffers_reply);
1000 free(geometry_reply);
1001
1002 return &dri2_img->base;
1003 }
1004
1005 static _EGLImage *
1006 dri2_x11_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
1007 _EGLContext *ctx, EGLenum target,
1008 EGLClientBuffer buffer, const EGLint *attr_list)
1009 {
1010 (void) drv;
1011
1012 switch (target) {
1013 case EGL_NATIVE_PIXMAP_KHR:
1014 return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1015 default:
1016 return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
1017 }
1018 }
1019
1020 static EGLBoolean
1021 dri2_x11_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
1022 EGLuint64KHR *ust, EGLuint64KHR *msc,
1023 EGLuint64KHR *sbc)
1024 {
1025 struct dri2_egl_display *dri2_dpy = dri2_egl_display(display);
1026 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
1027 xcb_dri2_get_msc_cookie_t cookie;
1028 xcb_dri2_get_msc_reply_t *reply;
1029
1030 cookie = xcb_dri2_get_msc(dri2_dpy->conn, dri2_surf->drawable);
1031 reply = xcb_dri2_get_msc_reply(dri2_dpy->conn, cookie, NULL);
1032
1033 if (!reply) {
1034 _eglError(EGL_BAD_ACCESS, __func__);
1035 return EGL_FALSE;
1036 }
1037
1038 *ust = ((EGLuint64KHR) reply->ust_hi << 32) | reply->ust_lo;
1039 *msc = ((EGLuint64KHR) reply->msc_hi << 32) | reply->msc_lo;
1040 *sbc = ((EGLuint64KHR) reply->sbc_hi << 32) | reply->sbc_lo;
1041 free(reply);
1042
1043 return EGL_TRUE;
1044 }
1045
1046 static struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
1047 .authenticate = NULL,
1048 .create_window_surface = dri2_x11_create_window_surface,
1049 .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1050 .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1051 .destroy_surface = dri2_x11_destroy_surface,
1052 .create_image = dri2_fallback_create_image_khr,
1053 .swap_interval = dri2_fallback_swap_interval,
1054 .swap_buffers = dri2_x11_swap_buffers,
1055 .swap_buffers_region = dri2_fallback_swap_buffers_region,
1056 .post_sub_buffer = dri2_fallback_post_sub_buffer,
1057 .copy_buffers = dri2_x11_copy_buffers,
1058 .query_buffer_age = dri2_fallback_query_buffer_age,
1059 .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1060 .get_sync_values = dri2_fallback_get_sync_values,
1061 };
1062
1063 static struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
1064 .authenticate = dri2_x11_authenticate,
1065 .create_window_surface = dri2_x11_create_window_surface,
1066 .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1067 .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1068 .destroy_surface = dri2_x11_destroy_surface,
1069 .create_image = dri2_x11_create_image_khr,
1070 .swap_interval = dri2_x11_swap_interval,
1071 .swap_buffers = dri2_x11_swap_buffers,
1072 .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
1073 .swap_buffers_region = dri2_x11_swap_buffers_region,
1074 .post_sub_buffer = dri2_x11_post_sub_buffer,
1075 .copy_buffers = dri2_x11_copy_buffers,
1076 .query_buffer_age = dri2_fallback_query_buffer_age,
1077 .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
1078 .get_sync_values = dri2_x11_get_sync_values,
1079 };
1080
1081 static EGLBoolean
1082 dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp)
1083 {
1084 struct dri2_egl_display *dri2_dpy;
1085
1086 dri2_dpy = calloc(1, sizeof *dri2_dpy);
1087 if (!dri2_dpy)
1088 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1089
1090 disp->DriverData = (void *) dri2_dpy;
1091 if (disp->PlatformDisplay == NULL) {
1092 dri2_dpy->conn = xcb_connect(0, &dri2_dpy->screen);
1093 dri2_dpy->own_device = true;
1094 } else {
1095 Display *dpy = disp->PlatformDisplay;
1096
1097 dri2_dpy->conn = XGetXCBConnection(dpy);
1098 dri2_dpy->screen = DefaultScreen(dpy);
1099 }
1100
1101 if (xcb_connection_has_error(dri2_dpy->conn)) {
1102 _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
1103 goto cleanup_dpy;
1104 }
1105
1106 /*
1107 * Every hardware driver_name is set using strdup. Doing the same in
1108 * here will allow is to simply free the memory at dri2_terminate().
1109 */
1110 dri2_dpy->driver_name = strdup("swrast");
1111 if (!dri2_load_driver_swrast(disp))
1112 goto cleanup_conn;
1113
1114 dri2_dpy->swrast_loader_extension.base.name = __DRI_SWRAST_LOADER;
1115 dri2_dpy->swrast_loader_extension.base.version = 2;
1116 dri2_dpy->swrast_loader_extension.getDrawableInfo = swrastGetDrawableInfo;
1117 dri2_dpy->swrast_loader_extension.putImage = swrastPutImage;
1118 dri2_dpy->swrast_loader_extension.getImage = swrastGetImage;
1119
1120 dri2_dpy->extensions[0] = &dri2_dpy->swrast_loader_extension.base;
1121 dri2_dpy->extensions[1] = NULL;
1122 dri2_dpy->extensions[2] = NULL;
1123
1124 if (!dri2_create_screen(disp))
1125 goto cleanup_driver;
1126
1127 if (dri2_dpy->conn) {
1128 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp))
1129 goto cleanup_configs;
1130 }
1131
1132 /* Fill vtbl last to prevent accidentally calling virtual function during
1133 * initialization.
1134 */
1135 dri2_dpy->vtbl = &dri2_x11_swrast_display_vtbl;
1136
1137 return EGL_TRUE;
1138
1139 cleanup_configs:
1140 _eglCleanupDisplay(disp);
1141 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1142 cleanup_driver:
1143 dlclose(dri2_dpy->driver);
1144 cleanup_conn:
1145 free(dri2_dpy->driver_name);
1146 if (disp->PlatformDisplay == NULL)
1147 xcb_disconnect(dri2_dpy->conn);
1148 cleanup_dpy:
1149 free(dri2_dpy);
1150
1151 return EGL_FALSE;
1152 }
1153
1154 static void
1155 dri2_x11_setup_swap_interval(struct dri2_egl_display *dri2_dpy)
1156 {
1157 GLint vblank_mode = DRI_CONF_VBLANK_DEF_INTERVAL_1;
1158 int arbitrary_max_interval = 1000;
1159
1160 /* default behavior for no SwapBuffers support: no vblank syncing
1161 * either.
1162 */
1163 dri2_dpy->min_swap_interval = 0;
1164 dri2_dpy->max_swap_interval = 0;
1165
1166 if (!dri2_dpy->swap_available)
1167 return;
1168
1169 /* If we do have swapbuffers, then we can support pretty much any swap
1170 * interval, but we allow driconf to override applications.
1171 */
1172 if (dri2_dpy->config)
1173 dri2_dpy->config->configQueryi(dri2_dpy->dri_screen,
1174 "vblank_mode", &vblank_mode);
1175 switch (vblank_mode) {
1176 case DRI_CONF_VBLANK_NEVER:
1177 dri2_dpy->min_swap_interval = 0;
1178 dri2_dpy->max_swap_interval = 0;
1179 dri2_dpy->default_swap_interval = 0;
1180 break;
1181 case DRI_CONF_VBLANK_ALWAYS_SYNC:
1182 dri2_dpy->min_swap_interval = 1;
1183 dri2_dpy->max_swap_interval = arbitrary_max_interval;
1184 dri2_dpy->default_swap_interval = 1;
1185 break;
1186 case DRI_CONF_VBLANK_DEF_INTERVAL_0:
1187 dri2_dpy->min_swap_interval = 0;
1188 dri2_dpy->max_swap_interval = arbitrary_max_interval;
1189 dri2_dpy->default_swap_interval = 0;
1190 break;
1191 default:
1192 case DRI_CONF_VBLANK_DEF_INTERVAL_1:
1193 dri2_dpy->min_swap_interval = 0;
1194 dri2_dpy->max_swap_interval = arbitrary_max_interval;
1195 dri2_dpy->default_swap_interval = 1;
1196 break;
1197 }
1198 }
1199
1200 static EGLBoolean
1201 dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp)
1202 {
1203 struct dri2_egl_display *dri2_dpy;
1204
1205 dri2_dpy = calloc(1, sizeof *dri2_dpy);
1206 if (!dri2_dpy)
1207 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1208
1209 disp->DriverData = (void *) dri2_dpy;
1210 if (disp->PlatformDisplay == NULL) {
1211 dri2_dpy->conn = xcb_connect(0, &dri2_dpy->screen);
1212 dri2_dpy->own_device = true;
1213 } else {
1214 Display *dpy = disp->PlatformDisplay;
1215
1216 dri2_dpy->conn = XGetXCBConnection(dpy);
1217 dri2_dpy->screen = DefaultScreen(dpy);
1218 }
1219
1220 if (xcb_connection_has_error(dri2_dpy->conn)) {
1221 _eglLog(_EGL_WARNING, "DRI2: xcb_connect failed");
1222 goto cleanup_dpy;
1223 }
1224
1225 if (dri2_dpy->conn) {
1226 if (!dri2_x11_connect(dri2_dpy))
1227 goto cleanup_conn;
1228 }
1229
1230 if (!dri2_load_driver(disp))
1231 goto cleanup_conn;
1232
1233 #ifdef O_CLOEXEC
1234 dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR | O_CLOEXEC);
1235 if (dri2_dpy->fd == -1 && errno == EINVAL)
1236 #endif
1237 {
1238 dri2_dpy->fd = open(dri2_dpy->device_name, O_RDWR);
1239 if (dri2_dpy->fd != -1)
1240 fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
1241 FD_CLOEXEC);
1242 }
1243 if (dri2_dpy->fd == -1) {
1244 _eglLog(_EGL_WARNING,
1245 "DRI2: could not open %s (%s)", dri2_dpy->device_name,
1246 strerror(errno));
1247 goto cleanup_driver;
1248 }
1249
1250 if (dri2_dpy->conn) {
1251 if (!dri2_x11_local_authenticate(disp))
1252 goto cleanup_fd;
1253 }
1254
1255 if (dri2_dpy->dri2_minor >= 1) {
1256 dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1257 dri2_dpy->dri2_loader_extension.base.version = 3;
1258 dri2_dpy->dri2_loader_extension.getBuffers = dri2_x11_get_buffers;
1259 dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_x11_flush_front_buffer;
1260 dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
1261 dri2_x11_get_buffers_with_format;
1262 } else {
1263 dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
1264 dri2_dpy->dri2_loader_extension.base.version = 2;
1265 dri2_dpy->dri2_loader_extension.getBuffers = dri2_x11_get_buffers;
1266 dri2_dpy->dri2_loader_extension.flushFrontBuffer = dri2_x11_flush_front_buffer;
1267 dri2_dpy->dri2_loader_extension.getBuffersWithFormat = NULL;
1268 }
1269
1270 dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
1271 dri2_dpy->extensions[1] = &image_lookup_extension.base;
1272 dri2_dpy->extensions[2] = NULL;
1273
1274 dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1275 dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1276
1277 if (!dri2_create_screen(disp))
1278 goto cleanup_fd;
1279
1280 dri2_x11_setup_swap_interval(dri2_dpy);
1281
1282 if (dri2_dpy->conn) {
1283 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp))
1284 goto cleanup_configs;
1285 }
1286
1287 disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1288 disp->Extensions.NOK_swap_region = EGL_TRUE;
1289 disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1290 disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1291 disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1292
1293 #ifdef HAVE_WAYLAND_PLATFORM
1294 disp->Extensions.WL_bind_wayland_display = EGL_TRUE;
1295 #endif
1296
1297 if (dri2_dpy->conn) {
1298 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp))
1299 goto cleanup_configs;
1300 }
1301
1302 /* Fill vtbl last to prevent accidentally calling virtual function during
1303 * initialization.
1304 */
1305 dri2_dpy->vtbl = &dri2_x11_display_vtbl;
1306
1307 return EGL_TRUE;
1308
1309 cleanup_configs:
1310 _eglCleanupDisplay(disp);
1311 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
1312 cleanup_fd:
1313 close(dri2_dpy->fd);
1314 cleanup_driver:
1315 dlclose(dri2_dpy->driver);
1316 cleanup_conn:
1317 if (disp->PlatformDisplay == NULL)
1318 xcb_disconnect(dri2_dpy->conn);
1319 cleanup_dpy:
1320 free(dri2_dpy);
1321
1322 return EGL_FALSE;
1323 }
1324
1325 EGLBoolean
1326 dri2_initialize_x11(_EGLDriver *drv, _EGLDisplay *disp)
1327 {
1328 EGLBoolean initialized = EGL_TRUE;
1329
1330 int x11_dri2_accel = (getenv("LIBGL_ALWAYS_SOFTWARE") == NULL);
1331
1332 if (x11_dri2_accel) {
1333 if (!dri2_initialize_x11_dri2(drv, disp)) {
1334 initialized = dri2_initialize_x11_swrast(drv, disp);
1335 }
1336 } else {
1337 initialized = dri2_initialize_x11_swrast(drv, disp);
1338 }
1339
1340 return initialized;
1341 }
1342