projects / mesa.git / blob
? search:


1bf79339c49d56b1c1d43736c59895497af1ffda
[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 #include "util/debug.h"
44 #include "util/macros.h"
45 #include "util/bitscan.h"
46
47 #include "egl_dri2.h"
48 #include "loader.h"
49
50 #ifdef HAVE_DRI3
51 #include "platform_x11_dri3.h"
52 #endif
53
54 static EGLBoolean
55 dri2_x11_swap_interval(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
56 EGLint interval);
57
58 uint32_t
59 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth);
60
61 static void
62 swrastCreateDrawable(struct dri2_egl_display * dri2_dpy,
63 struct dri2_egl_surface * dri2_surf)
64 {
65 uint32_t mask;
66 const uint32_t function = GXcopy;
67 uint32_t valgc[2];
68
69 /* create GC's */
70 dri2_surf->gc = xcb_generate_id(dri2_dpy->conn);
71 mask = XCB_GC_FUNCTION;
72 xcb_create_gc(dri2_dpy->conn, dri2_surf->gc, dri2_surf->drawable, mask, &function);
73
74 dri2_surf->swapgc = xcb_generate_id(dri2_dpy->conn);
75 mask = XCB_GC_FUNCTION | XCB_GC_GRAPHICS_EXPOSURES;
76 valgc[0] = function;
77 valgc[1] = False;
78 xcb_create_gc(dri2_dpy->conn, dri2_surf->swapgc, dri2_surf->drawable, mask, valgc);
79 switch (dri2_surf->depth) {
80 case 32:
81 case 30:
82 case 24:
83 dri2_surf->bytes_per_pixel = 4;
84 break;
85 case 16:
86 dri2_surf->bytes_per_pixel = 2;
87 break;
88 case 8:
89 dri2_surf->bytes_per_pixel = 1;
90 break;
91 case 0:
92 dri2_surf->bytes_per_pixel = 0;
93 break;
94 default:
95 _eglLog(_EGL_WARNING, "unsupported depth %d", dri2_surf->depth);
96 }
97 }
98
99 static void
100 swrastDestroyDrawable(struct dri2_egl_display * dri2_dpy,
101 struct dri2_egl_surface * dri2_surf)
102 {
103 xcb_free_gc(dri2_dpy->conn, dri2_surf->gc);
104 xcb_free_gc(dri2_dpy->conn, dri2_surf->swapgc);
105 }
106
107 static bool
108 x11_get_drawable_info(__DRIdrawable * draw,
109 int *x, int *y, int *w, int *h,
110 void *loaderPrivate)
111 {
112 struct dri2_egl_surface *dri2_surf = loaderPrivate;
113 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
114
115 xcb_get_geometry_cookie_t cookie;
116 xcb_get_geometry_reply_t *reply;
117 xcb_generic_error_t *error;
118 bool ret;
119
120 cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
121 reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
122 if (reply == NULL)
123 return false;
124
125 if (error != NULL) {
126 ret = false;
127 _eglLog(_EGL_WARNING, "error in xcb_get_geometry");
128 free(error);
129 } else {
130 *x = reply->x;
131 *y = reply->y;
132 *w = reply->width;
133 *h = reply->height;
134 ret = true;
135 }
136 free(reply);
137 return ret;
138 }
139
140 static void
141 swrastGetDrawableInfo(__DRIdrawable * draw,
142 int *x, int *y, int *w, int *h,
143 void *loaderPrivate)
144 {
145 *x = *y = *w = *h = 0;
146 x11_get_drawable_info(draw, x, y, w, h, loaderPrivate);
147 }
148
149 static void
150 swrastPutImage(__DRIdrawable * draw, int op,
151 int x, int y, int w, int h,
152 char *data, void *loaderPrivate)
153 {
154 struct dri2_egl_surface *dri2_surf = loaderPrivate;
155 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
156
157 xcb_gcontext_t gc;
158
159 switch (op) {
160 case __DRI_SWRAST_IMAGE_OP_DRAW:
161 gc = dri2_surf->gc;
162 break;
163 case __DRI_SWRAST_IMAGE_OP_SWAP:
164 gc = dri2_surf->swapgc;
165 break;
166 default:
167 return;
168 }
169
170 xcb_put_image(dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP, dri2_surf->drawable,
171 gc, w, h, x, y, 0, dri2_surf->depth,
172 w*h*dri2_surf->bytes_per_pixel, (const uint8_t *)data);
173 }
174
175 static void
176 swrastGetImage(__DRIdrawable * read,
177 int x, int y, int w, int h,
178 char *data, void *loaderPrivate)
179 {
180 struct dri2_egl_surface *dri2_surf = loaderPrivate;
181 struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display);
182
183 xcb_get_image_cookie_t cookie;
184 xcb_get_image_reply_t *reply;
185 xcb_generic_error_t *error;
186
187 cookie = xcb_get_image (dri2_dpy->conn, XCB_IMAGE_FORMAT_Z_PIXMAP,
188 dri2_surf->drawable, x, y, w, h, ~0);
189 reply = xcb_get_image_reply (dri2_dpy->conn, cookie, &error);
190 if (reply == NULL)
191 return;
192
193 if (error != NULL) {
194 _eglLog(_EGL_WARNING, "error in xcb_get_image");
195 free(error);
196 } else {
197 uint32_t bytes = xcb_get_image_data_length(reply);
198 uint8_t *idata = xcb_get_image_data(reply);
199 memcpy(data, idata, bytes);
200 }
201 free(reply);
202 }
203
204
205 static xcb_screen_t *
206 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
207 {
208 for (; iter.rem; --screen, xcb_screen_next(&iter))
209 if (screen == 0)
210 return iter.data;
211
212 return NULL;
213 }
214
215 static xcb_visualtype_t *
216 get_xcb_visualtype_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
217 {
218 xcb_visualtype_iterator_t visual_iter;
219 xcb_screen_t *screen = dri2_dpy->screen;
220 xcb_depth_iterator_t depth_iter = xcb_screen_allowed_depths_iterator(screen);
221
222 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
223 if (depth_iter.data->depth != depth)
224 continue;
225
226 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
227 if (visual_iter.rem)
228 return visual_iter.data;
229 }
230
231 return NULL;
232 }
233
234 /* Get red channel mask for given depth. */
235 unsigned int
236 dri2_x11_get_red_mask_for_depth(struct dri2_egl_display *dri2_dpy, int depth)
237 {
238 xcb_visualtype_t *visual = get_xcb_visualtype_for_depth(dri2_dpy, depth);
239
240 if (visual)
241 return visual->red_mask;
242
243 return 0;
244 }
245
246 /**
247 * Called via eglCreateWindowSurface(), drv->CreateWindowSurface().
248 */
249 static _EGLSurface *
250 dri2_x11_create_surface(_EGLDisplay *disp, EGLint type, _EGLConfig *conf,
251 void *native_surface, const EGLint *attrib_list)
252 {
253 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
254 struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
255 struct dri2_egl_surface *dri2_surf;
256 xcb_get_geometry_cookie_t cookie;
257 xcb_get_geometry_reply_t *reply;
258 xcb_generic_error_t *error;
259 const __DRIconfig *config;
260
261 dri2_surf = calloc(1, sizeof *dri2_surf);
262 if (!dri2_surf) {
263 _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
264 return NULL;
265 }
266
267 if (!dri2_init_surface(&dri2_surf->base, disp, type, conf, attrib_list,
268 false, native_surface))
269 goto cleanup_surf;
270
271 dri2_surf->region = XCB_NONE;
272 if (type == EGL_PBUFFER_BIT) {
273 dri2_surf->drawable = xcb_generate_id(dri2_dpy->conn);
274 xcb_create_pixmap(dri2_dpy->conn, conf->BufferSize,
275 dri2_surf->drawable, dri2_dpy->screen->root,
276 dri2_surf->base.Width, dri2_surf->base.Height);
277 } else {
278 STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_surface));
279 dri2_surf->drawable = (uintptr_t) native_surface;
280 }
281
282 config = dri2_get_dri_config(dri2_conf, type,
283 dri2_surf->base.GLColorspace);
284
285 if (!config) {
286 _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
287 goto cleanup_pixmap;
288 }
289
290 if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf))
291 goto cleanup_pixmap;
292
293 if (type != EGL_PBUFFER_BIT) {
294 cookie = xcb_get_geometry (dri2_dpy->conn, dri2_surf->drawable);
295 reply = xcb_get_geometry_reply (dri2_dpy->conn, cookie, &error);
296 if (error != NULL) {
297 if (error->error_code == BadAlloc)
298 _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
299 else if (type == EGL_WINDOW_BIT)
300 _eglError(EGL_BAD_NATIVE_WINDOW, "xcb_get_geometry");
301 else
302 _eglError(EGL_BAD_NATIVE_PIXMAP, "xcb_get_geometry");
303 free(error);
304 goto cleanup_dri_drawable;
305 } else if (reply == NULL) {
306 _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
307 goto cleanup_dri_drawable;
308 }
309
310 dri2_surf->base.Width = reply->width;
311 dri2_surf->base.Height = reply->height;
312 dri2_surf->depth = reply->depth;
313 free(reply);
314 }
315
316 if (dri2_dpy->dri2) {
317 xcb_void_cookie_t cookie;
318 int conn_error;
319
320 cookie = xcb_dri2_create_drawable_checked(dri2_dpy->conn,
321 dri2_surf->drawable);
322 error = xcb_request_check(dri2_dpy->conn, cookie);
323 conn_error = xcb_connection_has_error(dri2_dpy->conn);
324 if (conn_error || error != NULL) {
325 if (type == EGL_PBUFFER_BIT || conn_error || error->error_code == BadAlloc)
326 _eglError(EGL_BAD_ALLOC, "xcb_dri2_create_drawable_checked");
327 else if (type == EGL_WINDOW_BIT)
328 _eglError(EGL_BAD_NATIVE_WINDOW,
329 "xcb_dri2_create_drawable_checked");
330 else
331 _eglError(EGL_BAD_NATIVE_PIXMAP,
332 "xcb_dri2_create_drawable_checked");
333 free(error);
334 goto cleanup_dri_drawable;
335 }
336 } else {
337 if (type == EGL_PBUFFER_BIT) {
338 dri2_surf->depth = conf->BufferSize;
339 }
340 swrastCreateDrawable(dri2_dpy, dri2_surf);
341 }
342
343 /* we always copy the back buffer to front */
344 dri2_surf->base.PostSubBufferSupportedNV = EGL_TRUE;
345
346 return &dri2_surf->base;
347
348 cleanup_dri_drawable:
349 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
350 cleanup_pixmap:
351 if (type == EGL_PBUFFER_BIT)
352 xcb_free_pixmap(dri2_dpy->conn, dri2_surf->drawable);
353 cleanup_surf:
354 free(dri2_surf);
355
356 return NULL;
357 }
358
359 /**
360 * Called via eglCreateWindowSurface(), drv->CreateWindowSurface().
361 */
362 static _EGLSurface *
363 dri2_x11_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
364 void *native_window, const EGLint *attrib_list)
365 {
366 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
367 _EGLSurface *surf;
368
369 surf = dri2_x11_create_surface(disp, EGL_WINDOW_BIT, conf,
370 native_window, attrib_list);
371 if (surf != NULL) {
372 /* When we first create the DRI2 drawable, its swap interval on the
373 * server side is 1.
374 */
375 surf->SwapInterval = 1;
376
377 /* Override that with a driconf-set value. */
378 dri2_x11_swap_interval(disp->Driver, disp, surf, dri2_dpy->default_swap_interval);
379 }
380
381 return surf;
382 }
383
384 static _EGLSurface *
385 dri2_x11_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
386 void *native_pixmap, const EGLint *attrib_list)
387 {
388 return dri2_x11_create_surface(disp, EGL_PIXMAP_BIT, conf,
389 native_pixmap, attrib_list);
390 }
391
392 static _EGLSurface *
393 dri2_x11_create_pbuffer_surface(_EGLDisplay *disp, _EGLConfig *conf,
394 const EGLint *attrib_list)
395 {
396 return dri2_x11_create_surface(disp, EGL_PBUFFER_BIT, conf,
397 NULL, attrib_list);
398 }
399
400 static EGLBoolean
401 dri2_x11_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
402 {
403 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
404 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
405
406 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
407
408 if (dri2_dpy->dri2) {
409 xcb_dri2_destroy_drawable (dri2_dpy->conn, dri2_surf->drawable);
410 } else {
411 assert(dri2_dpy->swrast);
412 swrastDestroyDrawable(dri2_dpy, dri2_surf);
413 }
414
415 if (surf->Type == EGL_PBUFFER_BIT)
416 xcb_free_pixmap (dri2_dpy->conn, dri2_surf->drawable);
417
418 dri2_fini_surface(surf);
419 free(surf);
420
421 return EGL_TRUE;
422 }
423
424 /**
425 * Function utilizes swrastGetDrawableInfo to get surface
426 * geometry from x server and calls default query surface
427 * implementation that returns the updated values.
428 *
429 * In case of errors we still return values that we currently
430 * have.
431 */
432 static EGLBoolean
433 dri2_query_surface(_EGLDisplay *disp, _EGLSurface *surf,
434 EGLint attribute, EGLint *value)
435 {
436 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
437 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
438 int x, y, w, h;
439
440 __DRIdrawable *drawable = dri2_dpy->vtbl->get_dri_drawable(surf);
441
442 switch (attribute) {
443 case EGL_WIDTH:
444 case EGL_HEIGHT:
445 if (x11_get_drawable_info(drawable, &x, &y, &w, &h, dri2_surf)) {
446 surf->Width = w;
447 surf->Height = h;
448 }
449 break;
450 default:
451 break;
452 }
453 return _eglQuerySurface(disp, surf, attribute, value);
454 }
455
456 /**
457 * Process list of buffer received from the server
458 *
459 * Processes the list of buffers received in a reply from the server to either
460 * \c DRI2GetBuffers or \c DRI2GetBuffersWithFormat.
461 */
462 static void
463 dri2_x11_process_buffers(struct dri2_egl_surface *dri2_surf,
464 xcb_dri2_dri2_buffer_t *buffers, unsigned count)
465 {
466 struct dri2_egl_display *dri2_dpy =
467 dri2_egl_display(dri2_surf->base.Resource.Display);
468 xcb_rectangle_t rectangle;
469
470 dri2_surf->have_fake_front = false;
471
472 /* This assumes the DRI2 buffer attachment tokens matches the
473 * __DRIbuffer tokens. */
474 for (unsigned i = 0; i < count; i++) {
475 dri2_surf->buffers[i].attachment = buffers[i].attachment;
476 dri2_surf->buffers[i].name = buffers[i].name;
477 dri2_surf->buffers[i].pitch = buffers[i].pitch;
478 dri2_surf->buffers[i].cpp = buffers[i].cpp;
479 dri2_surf->buffers[i].flags = buffers[i].flags;
480
481 /* We only use the DRI drivers single buffer configs. This
482 * means that if we try to render to a window, DRI2 will give us
483 * the fake front buffer, which we'll use as a back buffer.
484 * Note that EGL doesn't require that several clients rendering
485 * to the same window must see the same aux buffers. */
486 if (dri2_surf->buffers[i].attachment == __DRI_BUFFER_FAKE_FRONT_LEFT)
487 dri2_surf->have_fake_front = true;
488 }
489
490 if (dri2_surf->region != XCB_NONE)
491 xcb_xfixes_destroy_region(dri2_dpy->conn, dri2_surf->region);
492
493 rectangle.x = 0;
494 rectangle.y = 0;
495 rectangle.width = dri2_surf->base.Width;
496 rectangle.height = dri2_surf->base.Height;
497 dri2_surf->region = xcb_generate_id(dri2_dpy->conn);
498 xcb_xfixes_create_region(dri2_dpy->conn, dri2_surf->region, 1, &rectangle);
499 }
500
501 static __DRIbuffer *
502 dri2_x11_get_buffers(__DRIdrawable * driDrawable,
503 int *width, int *height,
504 unsigned int *attachments, int count,
505 int *out_count, void *loaderPrivate)
506 {
507 struct dri2_egl_surface *dri2_surf = loaderPrivate;
508 struct dri2_egl_display *dri2_dpy =
509 dri2_egl_display(dri2_surf->base.Resource.Display);
510 xcb_dri2_dri2_buffer_t *buffers;
511 xcb_dri2_get_buffers_reply_t *reply;
512 xcb_dri2_get_buffers_cookie_t cookie;
513
514 (void) driDrawable;
515
516 cookie = xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
517 dri2_surf->drawable,
518 count, count, attachments);
519 reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn, cookie, NULL);
520 if (reply == NULL)
521 return NULL;
522 buffers = xcb_dri2_get_buffers_buffers (reply);
523 if (buffers == NULL)
524 return NULL;
525
526 *out_count = reply->count;
527 dri2_surf->base.Width = *width = reply->width;
528 dri2_surf->base.Height = *height = reply->height;
529 dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
530
531 free(reply);
532
533 return dri2_surf->buffers;
534 }
535
536 static __DRIbuffer *
537 dri2_x11_get_buffers_with_format(__DRIdrawable * driDrawable,
538 int *width, int *height,
539 unsigned int *attachments, int count,
540 int *out_count, void *loaderPrivate)
541 {
542 struct dri2_egl_surface *dri2_surf = loaderPrivate;
543 struct dri2_egl_display *dri2_dpy =
544 dri2_egl_display(dri2_surf->base.Resource.Display);
545 xcb_dri2_dri2_buffer_t *buffers;
546 xcb_dri2_get_buffers_with_format_reply_t *reply;
547 xcb_dri2_get_buffers_with_format_cookie_t cookie;
548 xcb_dri2_attach_format_t *format_attachments;
549
550 (void) driDrawable;
551
552 format_attachments = (xcb_dri2_attach_format_t *) attachments;
553 cookie = xcb_dri2_get_buffers_with_format_unchecked (dri2_dpy->conn,
554 dri2_surf->drawable,
555 count, count,
556 format_attachments);
557
558 reply = xcb_dri2_get_buffers_with_format_reply (dri2_dpy->conn,
559 cookie, NULL);
560 if (reply == NULL)
561 return NULL;
562
563 buffers = xcb_dri2_get_buffers_with_format_buffers (reply);
564 dri2_surf->base.Width = *width = reply->width;
565 dri2_surf->base.Height = *height = reply->height;
566 *out_count = reply->count;
567 dri2_x11_process_buffers(dri2_surf, buffers, *out_count);
568
569 free(reply);
570
571 return dri2_surf->buffers;
572 }
573
574 static void
575 dri2_x11_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
576 {
577 (void) driDrawable;
578
579 /* FIXME: Does EGL support front buffer rendering at all? */
580
581 #if 0
582 struct dri2_egl_surface *dri2_surf = loaderPrivate;
583
584 dri2WaitGL(dri2_surf);
585 #else
586 (void) loaderPrivate;
587 #endif
588 }
589
590 static int
591 dri2_x11_do_authenticate(struct dri2_egl_display *dri2_dpy, uint32_t id)
592 {
593 xcb_dri2_authenticate_reply_t *authenticate;
594 xcb_dri2_authenticate_cookie_t authenticate_cookie;
595 int ret = 0;
596
597 authenticate_cookie =
598 xcb_dri2_authenticate_unchecked(dri2_dpy->conn, dri2_dpy->screen->root, id);
599 authenticate =
600 xcb_dri2_authenticate_reply(dri2_dpy->conn, authenticate_cookie, NULL);
601
602 if (authenticate == NULL || !authenticate->authenticated)
603 ret = -1;
604
605 free(authenticate);
606
607 return ret;
608 }
609
610 static EGLBoolean
611 dri2_x11_local_authenticate(struct dri2_egl_display *dri2_dpy)
612 {
613 #ifdef HAVE_LIBDRM
614 drm_magic_t magic;
615
616 if (drmGetMagic(dri2_dpy->fd, &magic)) {
617 _eglLog(_EGL_WARNING, "DRI2: failed to get drm magic");
618 return EGL_FALSE;
619 }
620
621 if (dri2_x11_do_authenticate(dri2_dpy, magic) < 0) {
622 _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
623 return EGL_FALSE;
624 }
625 #endif
626 return EGL_TRUE;
627 }
628
629 static EGLBoolean
630 dri2_x11_connect(struct dri2_egl_display *dri2_dpy)
631 {
632 xcb_xfixes_query_version_reply_t *xfixes_query;
633 xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
634 xcb_dri2_query_version_reply_t *dri2_query;
635 xcb_dri2_query_version_cookie_t dri2_query_cookie;
636 xcb_dri2_connect_reply_t *connect;
637 xcb_dri2_connect_cookie_t connect_cookie;
638 xcb_generic_error_t *error;
639 char *driver_name, *loader_driver_name, *device_name;
640 const xcb_query_extension_reply_t *extension;
641
642 xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_xfixes_id);
643 xcb_prefetch_extension_data (dri2_dpy->conn, &xcb_dri2_id);
644
645 extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_xfixes_id);
646 if (!(extension && extension->present))
647 return EGL_FALSE;
648
649 extension = xcb_get_extension_data(dri2_dpy->conn, &xcb_dri2_id);
650 if (!(extension && extension->present))
651 return EGL_FALSE;
652
653 xfixes_query_cookie = xcb_xfixes_query_version(dri2_dpy->conn,
654 XCB_XFIXES_MAJOR_VERSION,
655 XCB_XFIXES_MINOR_VERSION);
656
657 dri2_query_cookie = xcb_dri2_query_version (dri2_dpy->conn,
658 XCB_DRI2_MAJOR_VERSION,
659 XCB_DRI2_MINOR_VERSION);
660
661 connect_cookie = xcb_dri2_connect_unchecked(dri2_dpy->conn, dri2_dpy->screen->root,
662 XCB_DRI2_DRIVER_TYPE_DRI);
663
664 xfixes_query =
665 xcb_xfixes_query_version_reply (dri2_dpy->conn,
666 xfixes_query_cookie, &error);
667 if (xfixes_query == NULL ||
668 error != NULL || xfixes_query->major_version < 2) {
669 _eglLog(_EGL_WARNING, "DRI2: failed to query xfixes version");
670 free(error);
671 free(xfixes_query);
672 return EGL_FALSE;
673 }
674 free(xfixes_query);
675
676 dri2_query =
677 xcb_dri2_query_version_reply (dri2_dpy->conn, dri2_query_cookie, &error);
678 if (dri2_query == NULL || error != NULL) {
679 _eglLog(_EGL_WARNING, "DRI2: failed to query version");
680 free(error);
681 return EGL_FALSE;
682 }
683 dri2_dpy->dri2_major = dri2_query->major_version;
684 dri2_dpy->dri2_minor = dri2_query->minor_version;
685 free(dri2_query);
686
687 connect = xcb_dri2_connect_reply (dri2_dpy->conn, connect_cookie, NULL);
688 if (connect == NULL ||
689 connect->driver_name_length + connect->device_name_length == 0) {
690 _eglLog(_EGL_WARNING, "DRI2: failed to authenticate");
691 return EGL_FALSE;
692 }
693
694 device_name = xcb_dri2_connect_device_name (connect);
695
696 dri2_dpy->fd = loader_open_device(device_name);
697 if (dri2_dpy->fd == -1) {
698 _eglLog(_EGL_WARNING,
699 "DRI2: could not open %s (%s)", device_name, strerror(errno));
700 free(connect);
701 return EGL_FALSE;
702 }
703
704 if (!dri2_x11_local_authenticate(dri2_dpy)) {
705 close(dri2_dpy->fd);
706 free(connect);
707 return EGL_FALSE;
708 }
709
710 driver_name = xcb_dri2_connect_driver_name (connect);
711
712 /* If Mesa knows about the appropriate driver for this fd, then trust it.
713 * Otherwise, default to the server's value.
714 */
715 loader_driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
716 if (loader_driver_name) {
717 dri2_dpy->driver_name = loader_driver_name;
718 } else {
719 dri2_dpy->driver_name =
720 strndup(driver_name,
721 xcb_dri2_connect_driver_name_length(connect));
722 }
723
724 if (dri2_dpy->driver_name == NULL) {
725 close(dri2_dpy->fd);
726 free(connect);
727 return EGL_FALSE;
728 }
729
730 #ifdef HAVE_WAYLAND_PLATFORM
731 dri2_dpy->device_name =
732 strndup(device_name,
733 xcb_dri2_connect_device_name_length(connect));
734 #endif
735
736 free(connect);
737
738 return EGL_TRUE;
739 }
740
741 static int
742 dri2_x11_authenticate(_EGLDisplay *disp, uint32_t id)
743 {
744 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
745
746 return dri2_x11_do_authenticate(dri2_dpy, id);
747 }
748
749 static EGLBoolean
750 dri2_x11_add_configs_for_visuals(struct dri2_egl_display *dri2_dpy,
751 _EGLDisplay *disp, bool supports_preserved)
752 {
753 xcb_depth_iterator_t d;
754 xcb_visualtype_t *visuals;
755 int config_count = 0;
756 EGLint surface_type;
757
758 d = xcb_screen_allowed_depths_iterator(dri2_dpy->screen);
759
760 surface_type =
761 EGL_WINDOW_BIT |
762 EGL_PIXMAP_BIT |
763 EGL_PBUFFER_BIT;
764
765 if (supports_preserved)
766 surface_type |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
767
768 while (d.rem > 0) {
769 EGLBoolean class_added[6] = { 0, };
770
771 visuals = xcb_depth_visuals(d.data);
772
773 for (int i = 0; i < xcb_depth_visuals_length(d.data); i++) {
774 if (class_added[visuals[i]._class])
775 continue;
776
777 class_added[visuals[i]._class] = EGL_TRUE;
778
779 for (int j = 0; dri2_dpy->driver_configs[j]; j++) {
780 struct dri2_egl_config *dri2_conf;
781 const __DRIconfig *config = dri2_dpy->driver_configs[j];
782
783 const EGLint config_attrs[] = {
784 EGL_NATIVE_VISUAL_ID, visuals[i].visual_id,
785 EGL_NATIVE_VISUAL_TYPE, visuals[i]._class,
786 EGL_NONE
787 };
788
789 int rgba_shifts[4] = {
790 ffs(visuals[i].red_mask) - 1,
791 ffs(visuals[i].green_mask) - 1,
792 ffs(visuals[i].blue_mask) - 1,
793 -1,
794 };
795
796 unsigned int rgba_sizes[4] = {
797 util_bitcount(visuals[i].red_mask),
798 util_bitcount(visuals[i].green_mask),
799 util_bitcount(visuals[i].blue_mask),
800 0,
801 };
802
803 dri2_conf = dri2_add_config(disp, config, config_count + 1,
804 surface_type, config_attrs,
805 rgba_shifts, rgba_sizes);
806 if (dri2_conf)
807 if (dri2_conf->base.ConfigID == config_count + 1)
808 config_count++;
809
810 /* Allow a 24-bit RGB visual to match a 32-bit RGBA EGLConfig.
811 * Ditto for 30-bit RGB visuals to match a 32-bit RGBA EGLConfig.
812 * Otherwise it will only match a 32-bit RGBA visual. On a
813 * composited window manager on X11, this will make all of the
814 * EGLConfigs with destination alpha get blended by the
815 * compositor. This is probably not what the application
816 * wants... especially on drivers that only have 32-bit RGBA
817 * EGLConfigs! */
818 if (d.data->depth == 24 || d.data->depth == 30) {
819 unsigned int rgba_mask = ~(visuals[i].red_mask |
820 visuals[i].green_mask |
821 visuals[i].blue_mask);
822 rgba_shifts[3] = ffs(rgba_mask) - 1;
823 rgba_sizes[3] = util_bitcount(rgba_mask);
824 dri2_conf = dri2_add_config(disp, config, config_count + 1,
825 surface_type, config_attrs,
826 rgba_shifts, rgba_sizes);
827 if (dri2_conf)
828 if (dri2_conf->base.ConfigID == config_count + 1)
829 config_count++;
830 }
831 }
832 }
833
834 xcb_depth_next(&d);
835 }
836
837 if (!config_count) {
838 _eglLog(_EGL_WARNING, "DRI2: failed to create any config");
839 return EGL_FALSE;
840 }
841
842 return EGL_TRUE;
843 }
844
845 static EGLBoolean
846 dri2_copy_region(const _EGLDriver *drv, _EGLDisplay *disp,
847 _EGLSurface *draw, xcb_xfixes_region_t region)
848 {
849 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
850 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
851 enum xcb_dri2_attachment_t render_attachment;
852 xcb_dri2_copy_region_cookie_t cookie;
853
854 /* No-op for a pixmap or pbuffer surface */
855 if (draw->Type == EGL_PIXMAP_BIT || draw->Type == EGL_PBUFFER_BIT)
856 return EGL_TRUE;
857
858 dri2_dpy->flush->flush(dri2_surf->dri_drawable);
859
860 if (dri2_surf->have_fake_front)
861 render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT;
862 else
863 render_attachment = XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT;
864
865 cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn,
866 dri2_surf->drawable,
867 region,
868 XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
869 render_attachment);
870 free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL));
871
872 return EGL_TRUE;
873 }
874
875 static int64_t
876 dri2_x11_swap_buffers_msc(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
877 int64_t msc, int64_t divisor, int64_t remainder)
878 {
879 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
880 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
881 uint32_t msc_hi = msc >> 32;
882 uint32_t msc_lo = msc & 0xffffffff;
883 uint32_t divisor_hi = divisor >> 32;
884 uint32_t divisor_lo = divisor & 0xffffffff;
885 uint32_t remainder_hi = remainder >> 32;
886 uint32_t remainder_lo = remainder & 0xffffffff;
887 xcb_dri2_swap_buffers_cookie_t cookie;
888 xcb_dri2_swap_buffers_reply_t *reply;
889 int64_t swap_count = -1;
890
891 if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available) {
892 swap_count = dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1;
893 } else {
894 dri2_flush_drawable_for_swapbuffers(disp, draw);
895
896 cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn,
897 dri2_surf->drawable, msc_hi,
898 msc_lo, divisor_hi, divisor_lo,
899 remainder_hi, remainder_lo);
900
901 reply = xcb_dri2_swap_buffers_reply(dri2_dpy->conn, cookie, NULL);
902
903 if (reply) {
904 swap_count = combine_u32_into_u64(reply->swap_hi, reply->swap_lo);
905 free(reply);
906 }
907 }
908
909 /* Since we aren't watching for the server's invalidate events like we're
910 * supposed to (due to XCB providing no mechanism for filtering the events
911 * the way xlib does), and SwapBuffers is a common cause of invalidate
912 * events, just shove one down to the driver, even though we haven't told
913 * the driver that we're the kind of loader that provides reliable
914 * invalidate events. This causes the driver to request buffers again at
915 * its next draw, so that we get the correct buffers if a pageflip
916 * happened. The driver should still be using the viewport hack to catch
917 * window resizes.
918 */
919 if (dri2_dpy->flush->base.version >= 3 && dri2_dpy->flush->invalidate)
920 dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
921
922 return swap_count;
923 }
924
925 static EGLBoolean
926 dri2_x11_swap_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
927 {
928 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
929 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
930
931 if (!dri2_dpy->flush) {
932 dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
933 return EGL_TRUE;
934 }
935
936 if (dri2_x11_swap_buffers_msc(drv, disp, draw, 0, 0, 0) == -1) {
937 /* Swap failed with a window drawable. */
938 return _eglError(EGL_BAD_NATIVE_WINDOW, __func__);
939 }
940 return EGL_TRUE;
941 }
942
943 static EGLBoolean
944 dri2_x11_swap_buffers_region(const _EGLDriver *drv, _EGLDisplay *disp,
945 _EGLSurface *draw,
946 EGLint numRects, const EGLint *rects)
947 {
948 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
949 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
950 EGLBoolean ret;
951 xcb_xfixes_region_t region;
952 xcb_rectangle_t rectangles[16];
953
954 if (numRects > (int)ARRAY_SIZE(rectangles))
955 return dri2_copy_region(drv, disp, draw, dri2_surf->region);
956
957 for (int i = 0; i < numRects; i++) {
958 rectangles[i].x = rects[i * 4];
959 rectangles[i].y = dri2_surf->base.Height - rects[i * 4 + 1] - rects[i * 4 + 3];
960 rectangles[i].width = rects[i * 4 + 2];
961 rectangles[i].height = rects[i * 4 + 3];
962 }
963
964 region = xcb_generate_id(dri2_dpy->conn);
965 xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles);
966 ret = dri2_copy_region(drv, disp, draw, region);
967 xcb_xfixes_destroy_region(dri2_dpy->conn, region);
968
969 return ret;
970 }
971
972 static EGLBoolean
973 dri2_x11_post_sub_buffer(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw,
974 EGLint x, EGLint y, EGLint width, EGLint height)
975 {
976 const EGLint rect[4] = { x, y, width, height };
977
978 if (x < 0 || y < 0 || width < 0 || height < 0)
979 _eglError(EGL_BAD_PARAMETER, "eglPostSubBufferNV");
980
981 return dri2_x11_swap_buffers_region(drv, disp, draw, 1, rect);
982 }
983
984 static EGLBoolean
985 dri2_x11_swap_interval(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
986 EGLint interval)
987 {
988 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
989 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
990
991 if (dri2_dpy->swap_available)
992 xcb_dri2_swap_interval(dri2_dpy->conn, dri2_surf->drawable, interval);
993
994 return EGL_TRUE;
995 }
996
997 static EGLBoolean
998 dri2_x11_copy_buffers(const _EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf,
999 void *native_pixmap_target)
1000 {
1001 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1002 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
1003 xcb_gcontext_t gc;
1004 xcb_pixmap_t target;
1005
1006 STATIC_ASSERT(sizeof(uintptr_t) == sizeof(native_pixmap_target));
1007 target = (uintptr_t) native_pixmap_target;
1008
1009 (void) drv;
1010
1011 dri2_dpy->flush->flush(dri2_surf->dri_drawable);
1012
1013 gc = xcb_generate_id(dri2_dpy->conn);
1014 xcb_create_gc(dri2_dpy->conn, gc, target, 0, NULL);
1015 xcb_copy_area(dri2_dpy->conn,
1016 dri2_surf->drawable,
1017 target,
1018 gc,
1019 0, 0,
1020 0, 0,
1021 dri2_surf->base.Width,
1022 dri2_surf->base.Height);
1023 xcb_free_gc(dri2_dpy->conn, gc);
1024
1025 return EGL_TRUE;
1026 }
1027
1028 uint32_t
1029 dri2_format_for_depth(struct dri2_egl_display *dri2_dpy, uint32_t depth)
1030 {
1031 switch (depth) {
1032 case 16:
1033 return __DRI_IMAGE_FORMAT_RGB565;
1034 case 24:
1035 return __DRI_IMAGE_FORMAT_XRGB8888;
1036 case 30:
1037 /* Different preferred formats for different hw */
1038 if (dri2_x11_get_red_mask_for_depth(dri2_dpy, 30) == 0x3ff)
1039 return __DRI_IMAGE_FORMAT_XBGR2101010;
1040 else
1041 return __DRI_IMAGE_FORMAT_XRGB2101010;
1042 case 32:
1043 return __DRI_IMAGE_FORMAT_ARGB8888;
1044 default:
1045 return __DRI_IMAGE_FORMAT_NONE;
1046 }
1047 }
1048
1049 static _EGLImage *
1050 dri2_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
1051 EGLClientBuffer buffer, const EGLint *attr_list)
1052 {
1053 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1054 struct dri2_egl_image *dri2_img;
1055 unsigned int attachments[1];
1056 xcb_drawable_t drawable;
1057 xcb_dri2_get_buffers_cookie_t buffers_cookie;
1058 xcb_dri2_get_buffers_reply_t *buffers_reply;
1059 xcb_dri2_dri2_buffer_t *buffers;
1060 xcb_get_geometry_cookie_t geometry_cookie;
1061 xcb_get_geometry_reply_t *geometry_reply;
1062 xcb_generic_error_t *error;
1063 int stride, format;
1064
1065 (void) ctx;
1066
1067 drawable = (xcb_drawable_t) (uintptr_t) buffer;
1068 xcb_dri2_create_drawable (dri2_dpy->conn, drawable);
1069 attachments[0] = XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT;
1070 buffers_cookie =
1071 xcb_dri2_get_buffers_unchecked (dri2_dpy->conn,
1072 drawable, 1, 1, attachments);
1073 geometry_cookie = xcb_get_geometry (dri2_dpy->conn, drawable);
1074 buffers_reply = xcb_dri2_get_buffers_reply (dri2_dpy->conn,
1075 buffers_cookie, NULL);
1076 if (buffers_reply == NULL)
1077 return NULL;
1078
1079 buffers = xcb_dri2_get_buffers_buffers (buffers_reply);
1080 if (buffers == NULL) {
1081 return NULL;
1082 }
1083
1084 geometry_reply = xcb_get_geometry_reply (dri2_dpy->conn,
1085 geometry_cookie, &error);
1086 if (geometry_reply == NULL || error != NULL) {
1087 _eglError(EGL_BAD_ALLOC, "xcb_get_geometry");
1088 free(error);
1089 free(buffers_reply);
1090 return NULL;
1091 }
1092
1093 format = dri2_format_for_depth(dri2_dpy, geometry_reply->depth);
1094 if (format == __DRI_IMAGE_FORMAT_NONE) {
1095 _eglError(EGL_BAD_PARAMETER,
1096 "dri2_create_image_khr: unsupported pixmap depth");
1097 free(buffers_reply);
1098 free(geometry_reply);
1099 return NULL;
1100 }
1101
1102 dri2_img = malloc(sizeof *dri2_img);
1103 if (!dri2_img) {
1104 free(buffers_reply);
1105 free(geometry_reply);
1106 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1107 return EGL_NO_IMAGE_KHR;
1108 }
1109
1110 _eglInitImage(&dri2_img->base, disp);
1111
1112 stride = buffers[0].pitch / buffers[0].cpp;
1113 dri2_img->dri_image =
1114 dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1115 buffers_reply->width,
1116 buffers_reply->height,
1117 format,
1118 buffers[0].name,
1119 stride,
1120 dri2_img);
1121
1122 free(buffers_reply);
1123 free(geometry_reply);
1124
1125 return &dri2_img->base;
1126 }
1127
1128 static _EGLImage *
1129 dri2_x11_create_image_khr(const _EGLDriver *drv, _EGLDisplay *disp,
1130 _EGLContext *ctx, EGLenum target,
1131 EGLClientBuffer buffer, const EGLint *attr_list)
1132 {
1133 (void) drv;
1134
1135 switch (target) {
1136 case EGL_NATIVE_PIXMAP_KHR:
1137 return dri2_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
1138 default:
1139 return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
1140 }
1141 }
1142
1143 static EGLBoolean
1144 dri2_x11_get_sync_values(_EGLDisplay *display, _EGLSurface *surface,
1145 EGLuint64KHR *ust, EGLuint64KHR *msc,
1146 EGLuint64KHR *sbc)
1147 {
1148 struct dri2_egl_display *dri2_dpy = dri2_egl_display(display);
1149 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
1150 xcb_dri2_get_msc_cookie_t cookie;
1151 xcb_dri2_get_msc_reply_t *reply;
1152
1153 cookie = xcb_dri2_get_msc(dri2_dpy->conn, dri2_surf->drawable);
1154 reply = xcb_dri2_get_msc_reply(dri2_dpy->conn, cookie, NULL);
1155
1156 if (!reply)
1157 return _eglError(EGL_BAD_ACCESS, __func__);
1158
1159 *ust = ((EGLuint64KHR) reply->ust_hi << 32) | reply->ust_lo;
1160 *msc = ((EGLuint64KHR) reply->msc_hi << 32) | reply->msc_lo;
1161 *sbc = ((EGLuint64KHR) reply->sbc_hi << 32) | reply->sbc_lo;
1162 free(reply);
1163
1164 return EGL_TRUE;
1165 }
1166
1167 static const struct dri2_egl_display_vtbl dri2_x11_swrast_display_vtbl = {
1168 .authenticate = NULL,
1169 .create_window_surface = dri2_x11_create_window_surface,
1170 .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1171 .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1172 .destroy_surface = dri2_x11_destroy_surface,
1173 .create_image = dri2_create_image_khr,
1174 .swap_buffers = dri2_x11_swap_buffers,
1175 /* XXX: should really implement this since X11 has pixmaps */
1176 .query_surface = dri2_query_surface,
1177 .get_dri_drawable = dri2_surface_get_dri_drawable,
1178 };
1179
1180 static const struct dri2_egl_display_vtbl dri2_x11_display_vtbl = {
1181 .authenticate = dri2_x11_authenticate,
1182 .create_window_surface = dri2_x11_create_window_surface,
1183 .create_pixmap_surface = dri2_x11_create_pixmap_surface,
1184 .create_pbuffer_surface = dri2_x11_create_pbuffer_surface,
1185 .destroy_surface = dri2_x11_destroy_surface,
1186 .create_image = dri2_x11_create_image_khr,
1187 .swap_interval = dri2_x11_swap_interval,
1188 .swap_buffers = dri2_x11_swap_buffers,
1189 .swap_buffers_region = dri2_x11_swap_buffers_region,
1190 .post_sub_buffer = dri2_x11_post_sub_buffer,
1191 .copy_buffers = dri2_x11_copy_buffers,
1192 .query_surface = dri2_query_surface,
1193 .get_sync_values = dri2_x11_get_sync_values,
1194 .get_dri_drawable = dri2_surface_get_dri_drawable,
1195 };
1196
1197 static const __DRIswrastLoaderExtension swrast_loader_extension = {
1198 .base = { __DRI_SWRAST_LOADER, 1 },
1199
1200 .getDrawableInfo = swrastGetDrawableInfo,
1201 .putImage = swrastPutImage,
1202 .getImage = swrastGetImage,
1203 };
1204
1205 static const __DRIextension *swrast_loader_extensions[] = {
1206 &swrast_loader_extension.base,
1207 &image_lookup_extension.base,
1208 NULL,
1209 };
1210
1211 static int
1212 dri2_find_screen_for_display(const _EGLDisplay *disp, int fallback_screen)
1213 {
1214 const EGLAttrib *attr;
1215
1216 for (attr = disp->Options.Attribs; attr; attr += 2) {
1217 if (attr[0] == EGL_PLATFORM_X11_SCREEN_EXT)
1218 return attr[1];
1219 }
1220
1221 return fallback_screen;
1222 }
1223
1224 static EGLBoolean
1225 dri2_get_xcb_connection(_EGLDisplay *disp,
1226 struct dri2_egl_display *dri2_dpy)
1227 {
1228 xcb_screen_iterator_t s;
1229 int screen;
1230 const char *msg;
1231
1232 disp->DriverData = (void *) dri2_dpy;
1233 if (disp->PlatformDisplay == NULL) {
1234 dri2_dpy->conn = xcb_connect(NULL, &screen);
1235 dri2_dpy->own_device = true;
1236 screen = dri2_find_screen_for_display(disp, screen);
1237 } else {
1238 Display *dpy = disp->PlatformDisplay;
1239 dri2_dpy->conn = XGetXCBConnection(dpy);
1240 screen = DefaultScreen(dpy);
1241 }
1242
1243 if (!dri2_dpy->conn || xcb_connection_has_error(dri2_dpy->conn)) {
1244 msg = "xcb_connect failed";
1245 goto disconnect;
1246 }
1247
1248 s = xcb_setup_roots_iterator(xcb_get_setup(dri2_dpy->conn));
1249 dri2_dpy->screen = get_xcb_screen(s, screen);
1250 if (!dri2_dpy->screen) {
1251 msg = "failed to get xcb screen";
1252 goto disconnect;
1253 }
1254
1255 return EGL_TRUE;
1256 disconnect:
1257 if (disp->PlatformDisplay == NULL)
1258 xcb_disconnect(dri2_dpy->conn);
1259
1260 return _eglError(EGL_BAD_ALLOC, msg);
1261 }
1262
1263 static EGLBoolean
1264 dri2_initialize_x11_swrast(_EGLDisplay *disp)
1265 {
1266 _EGLDevice *dev;
1267 struct dri2_egl_display *dri2_dpy;
1268
1269 dri2_dpy = calloc(1, sizeof *dri2_dpy);
1270 if (!dri2_dpy)
1271 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1272
1273 dri2_dpy->fd = -1;
1274 if (!dri2_get_xcb_connection(disp, dri2_dpy))
1275 goto cleanup;
1276
1277 dev = _eglAddDevice(dri2_dpy->fd, true);
1278 if (!dev) {
1279 _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1280 goto cleanup;
1281 }
1282
1283 disp->Device = dev;
1284
1285 /*
1286 * Every hardware driver_name is set using strdup. Doing the same in
1287 * here will allow is to simply free the memory at dri2_terminate().
1288 */
1289 dri2_dpy->driver_name = strdup("swrast");
1290 if (!dri2_load_driver_swrast(disp))
1291 goto cleanup;
1292
1293 dri2_dpy->loader_extensions = swrast_loader_extensions;
1294
1295 if (!dri2_create_screen(disp))
1296 goto cleanup;
1297
1298 if (!dri2_setup_extensions(disp))
1299 goto cleanup;
1300
1301 dri2_setup_screen(disp);
1302
1303 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1304 goto cleanup;
1305
1306 /* Fill vtbl last to prevent accidentally calling virtual function during
1307 * initialization.
1308 */
1309 dri2_dpy->vtbl = &dri2_x11_swrast_display_vtbl;
1310
1311 return EGL_TRUE;
1312
1313 cleanup:
1314 dri2_display_destroy(disp);
1315 return EGL_FALSE;
1316 }
1317
1318 static void
1319 dri2_x11_setup_swap_interval(_EGLDisplay *disp)
1320 {
1321 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1322 int arbitrary_max_interval = 1000;
1323
1324 /* default behavior for no SwapBuffers support: no vblank syncing
1325 * either.
1326 */
1327 dri2_dpy->min_swap_interval = 0;
1328 dri2_dpy->max_swap_interval = 0;
1329 dri2_dpy->default_swap_interval = 0;
1330
1331 if (!dri2_dpy->swap_available)
1332 return;
1333
1334 /* If we do have swapbuffers, then we can support pretty much any swap
1335 * interval.
1336 */
1337 dri2_setup_swap_interval(disp, arbitrary_max_interval);
1338 }
1339
1340 #ifdef HAVE_DRI3
1341
1342 static const __DRIextension *dri3_image_loader_extensions[] = {
1343 &dri3_image_loader_extension.base,
1344 &image_lookup_extension.base,
1345 &use_invalidate.base,
1346 &background_callable_extension.base,
1347 NULL,
1348 };
1349
1350 static EGLBoolean
1351 dri2_initialize_x11_dri3(_EGLDisplay *disp)
1352 {
1353 _EGLDevice *dev;
1354 struct dri2_egl_display *dri2_dpy;
1355
1356 dri2_dpy = calloc(1, sizeof *dri2_dpy);
1357 if (!dri2_dpy)
1358 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1359
1360 dri2_dpy->fd = -1;
1361 if (!dri2_get_xcb_connection(disp, dri2_dpy))
1362 goto cleanup;
1363
1364 if (!dri3_x11_connect(dri2_dpy))
1365 goto cleanup;
1366
1367 dev = _eglAddDevice(dri2_dpy->fd, false);
1368 if (!dev) {
1369 _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1370 goto cleanup;
1371 }
1372
1373 disp->Device = dev;
1374
1375 if (!dri2_load_driver_dri3(disp))
1376 goto cleanup;
1377
1378 dri2_dpy->loader_extensions = dri3_image_loader_extensions;
1379
1380 dri2_dpy->swap_available = true;
1381 dri2_dpy->invalidate_available = true;
1382
1383 if (!dri2_create_screen(disp))
1384 goto cleanup;
1385
1386 if (!dri2_setup_extensions(disp))
1387 goto cleanup;
1388
1389 dri2_setup_screen(disp);
1390
1391 dri2_x11_setup_swap_interval(disp);
1392
1393 if (!dri2_dpy->is_different_gpu)
1394 disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1395 disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1396 disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1397 disp->Extensions.EXT_buffer_age = EGL_TRUE;
1398
1399 dri2_set_WL_bind_wayland_display(disp);
1400
1401 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, false))
1402 goto cleanup;
1403
1404 dri2_dpy->loader_dri3_ext.core = dri2_dpy->core;
1405 dri2_dpy->loader_dri3_ext.image_driver = dri2_dpy->image_driver;
1406 dri2_dpy->loader_dri3_ext.flush = dri2_dpy->flush;
1407 dri2_dpy->loader_dri3_ext.tex_buffer = dri2_dpy->tex_buffer;
1408 dri2_dpy->loader_dri3_ext.image = dri2_dpy->image;
1409 dri2_dpy->loader_dri3_ext.config = dri2_dpy->config;
1410
1411 /* Fill vtbl last to prevent accidentally calling virtual function during
1412 * initialization.
1413 */
1414 dri2_dpy->vtbl = &dri3_x11_display_vtbl;
1415
1416 _eglLog(_EGL_INFO, "Using DRI3");
1417
1418 return EGL_TRUE;
1419
1420 cleanup:
1421 dri2_display_destroy(disp);
1422 return EGL_FALSE;
1423 }
1424 #endif
1425
1426 static const __DRIdri2LoaderExtension dri2_loader_extension_old = {
1427 .base = { __DRI_DRI2_LOADER, 2 },
1428
1429 .getBuffers = dri2_x11_get_buffers,
1430 .flushFrontBuffer = dri2_x11_flush_front_buffer,
1431 .getBuffersWithFormat = NULL,
1432 };
1433
1434 static const __DRIdri2LoaderExtension dri2_loader_extension = {
1435 .base = { __DRI_DRI2_LOADER, 3 },
1436
1437 .getBuffers = dri2_x11_get_buffers,
1438 .flushFrontBuffer = dri2_x11_flush_front_buffer,
1439 .getBuffersWithFormat = dri2_x11_get_buffers_with_format,
1440 };
1441
1442 static const __DRIextension *dri2_loader_extensions_old[] = {
1443 &dri2_loader_extension_old.base,
1444 &image_lookup_extension.base,
1445 &background_callable_extension.base,
1446 NULL,
1447 };
1448
1449 static const __DRIextension *dri2_loader_extensions[] = {
1450 &dri2_loader_extension.base,
1451 &image_lookup_extension.base,
1452 &use_invalidate.base,
1453 &background_callable_extension.base,
1454 NULL,
1455 };
1456
1457 static EGLBoolean
1458 dri2_initialize_x11_dri2(_EGLDisplay *disp)
1459 {
1460 _EGLDevice *dev;
1461 struct dri2_egl_display *dri2_dpy;
1462
1463 dri2_dpy = calloc(1, sizeof *dri2_dpy);
1464 if (!dri2_dpy)
1465 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
1466
1467 dri2_dpy->fd = -1;
1468 if (!dri2_get_xcb_connection(disp, dri2_dpy))
1469 goto cleanup;
1470
1471 if (!dri2_x11_connect(dri2_dpy))
1472 goto cleanup;
1473
1474 dev = _eglAddDevice(dri2_dpy->fd, false);
1475 if (!dev) {
1476 _eglError(EGL_NOT_INITIALIZED, "DRI2: failed to find EGLDevice");
1477 goto cleanup;
1478 }
1479
1480 disp->Device = dev;
1481
1482 if (!dri2_load_driver(disp))
1483 goto cleanup;
1484
1485 if (dri2_dpy->dri2_minor >= 1)
1486 dri2_dpy->loader_extensions = dri2_loader_extensions;
1487 else
1488 dri2_dpy->loader_extensions = dri2_loader_extensions_old;
1489
1490 dri2_dpy->swap_available = (dri2_dpy->dri2_minor >= 2);
1491 dri2_dpy->invalidate_available = (dri2_dpy->dri2_minor >= 3);
1492
1493 if (!dri2_create_screen(disp))
1494 goto cleanup;
1495
1496 if (!dri2_setup_extensions(disp))
1497 goto cleanup;
1498
1499 dri2_setup_screen(disp);
1500
1501 dri2_x11_setup_swap_interval(disp);
1502
1503 disp->Extensions.KHR_image_pixmap = EGL_TRUE;
1504 disp->Extensions.NOK_swap_region = EGL_TRUE;
1505 disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
1506 disp->Extensions.NV_post_sub_buffer = EGL_TRUE;
1507 disp->Extensions.CHROMIUM_sync_control = EGL_TRUE;
1508
1509 dri2_set_WL_bind_wayland_display(disp);
1510
1511 if (!dri2_x11_add_configs_for_visuals(dri2_dpy, disp, true))
1512 goto cleanup;
1513
1514 /* Fill vtbl last to prevent accidentally calling virtual function during
1515 * initialization.
1516 */
1517 dri2_dpy->vtbl = &dri2_x11_display_vtbl;
1518
1519 _eglLog(_EGL_INFO, "Using DRI2");
1520
1521 return EGL_TRUE;
1522
1523 cleanup:
1524 dri2_display_destroy(disp);
1525 return EGL_FALSE;
1526 }
1527
1528 EGLBoolean
1529 dri2_initialize_x11(_EGLDisplay *disp)
1530 {
1531 EGLBoolean initialized = EGL_FALSE;
1532
1533 if (!disp->Options.ForceSoftware) {
1534 #ifdef HAVE_DRI3
1535 if (!env_var_as_boolean("LIBGL_DRI3_DISABLE", false))
1536 initialized = dri2_initialize_x11_dri3(disp);
1537 #endif
1538
1539 if (!initialized)
1540 initialized = dri2_initialize_x11_dri2(disp);
1541 }
1542
1543 if (!initialized)
1544 initialized = dri2_initialize_x11_swrast(disp);
1545
1546 return initialized;
1547 }
1548
1549 void
1550 dri2_teardown_x11(struct dri2_egl_display *dri2_dpy)
1551 {
1552 if (dri2_dpy->own_device)
1553 xcb_disconnect(dri2_dpy->conn);
1554 }