egl/drm: ensure the backing gbm is set before using it
[mesa.git] / src / egl / drivers / dri2 / platform_drm.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 <stdint.h>
29 #include <stdlib.h>
30 #include <stdio.h>
31 #include <string.h>
32 #include <xf86drm.h>
33 #include <dlfcn.h>
34 #include <sys/types.h>
35 #include <sys/stat.h>
36 #include <fcntl.h>
37 #include <unistd.h>
38
39 #include "egl_dri2.h"
40 #include "egl_dri2_fallbacks.h"
41 #include "loader.h"
42
43 static struct gbm_bo *
44 lock_front_buffer(struct gbm_surface *_surf)
45 {
46 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
47 struct dri2_egl_surface *dri2_surf = surf->dri_private;
48 struct gbm_dri_device *device = gbm_dri_device(_surf->gbm);
49 struct gbm_bo *bo;
50
51 if (dri2_surf->current == NULL) {
52 _eglError(EGL_BAD_SURFACE, "no front buffer");
53 return NULL;
54 }
55
56 bo = dri2_surf->current->bo;
57
58 if (device->dri2) {
59 dri2_surf->current->locked = true;
60 dri2_surf->current = NULL;
61 }
62
63 return bo;
64 }
65
66 static void
67 release_buffer(struct gbm_surface *_surf, struct gbm_bo *bo)
68 {
69 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
70 struct dri2_egl_surface *dri2_surf = surf->dri_private;
71
72 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
73 if (dri2_surf->color_buffers[i].bo == bo) {
74 dri2_surf->color_buffers[i].locked = false;
75 break;
76 }
77 }
78 }
79
80 static int
81 has_free_buffers(struct gbm_surface *_surf)
82 {
83 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
84 struct dri2_egl_surface *dri2_surf = surf->dri_private;
85
86 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
87 if (!dri2_surf->color_buffers[i].locked)
88 return 1;
89
90 return 0;
91 }
92
93 static bool
94 dri2_drm_config_is_compatible(struct dri2_egl_display *dri2_dpy,
95 const __DRIconfig *config,
96 struct gbm_surface *surface)
97 {
98 const struct gbm_dri_visual *visual = NULL;
99 unsigned int red, green, blue, alpha;
100 int i;
101
102 /* Check that the EGLConfig being used to render to the surface is
103 * compatible with the surface format. Since mixing ARGB and XRGB of
104 * otherwise-compatible formats is relatively common, explicitly allow
105 * this.
106 */
107 dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &red);
108 dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &green);
109 dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &blue);
110 dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &alpha);
111
112 for (i = 0; i < dri2_dpy->gbm_dri->num_visuals; i++) {
113 visual = &dri2_dpy->gbm_dri->visual_table[i];
114 if (visual->gbm_format == surface->format)
115 break;
116 }
117
118 if (i == dri2_dpy->gbm_dri->num_visuals)
119 return false;
120
121 if (red != visual->rgba_masks.red ||
122 green != visual->rgba_masks.green ||
123 blue != visual->rgba_masks.blue ||
124 (alpha && visual->rgba_masks.alpha && alpha != visual->rgba_masks.alpha)) {
125 return false;
126 }
127
128 return true;
129 }
130
131 static _EGLSurface *
132 dri2_drm_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp,
133 _EGLConfig *conf, void *native_surface,
134 const EGLint *attrib_list)
135 {
136 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
137 struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
138 struct dri2_egl_surface *dri2_surf;
139 struct gbm_surface *surface = native_surface;
140 struct gbm_dri_surface *surf;
141 const __DRIconfig *config;
142
143 (void) drv;
144
145 dri2_surf = calloc(1, sizeof *dri2_surf);
146 if (!dri2_surf) {
147 _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
148 return NULL;
149 }
150
151 if (!dri2_init_surface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf,
152 attrib_list, false, native_surface))
153 goto cleanup_surf;
154
155 config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
156 dri2_surf->base.GLColorspace);
157
158 if (!config) {
159 _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
160 goto cleanup_surf;
161 }
162
163 if (!dri2_drm_config_is_compatible(dri2_dpy, config, surface)) {
164 _eglError(EGL_BAD_MATCH, "EGL config not compatible with GBM format");
165 goto cleanup_surf;
166 }
167
168 surf = gbm_dri_surface(surface);
169 dri2_surf->gbm_surf = surf;
170 dri2_surf->base.Width = surf->base.width;
171 dri2_surf->base.Height = surf->base.height;
172 surf->dri_private = dri2_surf;
173
174 if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf->gbm_surf))
175 goto cleanup_surf;
176
177 return &dri2_surf->base;
178
179 cleanup_surf:
180 free(dri2_surf);
181
182 return NULL;
183 }
184
185 static _EGLSurface *
186 dri2_drm_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp,
187 _EGLConfig *conf, void *native_window,
188 const EGLint *attrib_list)
189 {
190 /* From the EGL_MESA_platform_gbm spec, version 5:
191 *
192 * It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
193 * that belongs to the GBM platform. Any such call fails and generates
194 * EGL_BAD_PARAMETER.
195 */
196 _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on GBM");
197 return NULL;
198 }
199
200 static EGLBoolean
201 dri2_drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
202 {
203 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
204 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
205
206 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
207
208 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
209 if (dri2_surf->color_buffers[i].bo)
210 gbm_bo_destroy(dri2_surf->color_buffers[i].bo);
211 }
212
213 dri2_egl_surface_free_local_buffers(dri2_surf);
214
215 dri2_fini_surface(surf);
216 free(surf);
217
218 return EGL_TRUE;
219 }
220
221 static int
222 get_back_bo(struct dri2_egl_surface *dri2_surf)
223 {
224 struct dri2_egl_display *dri2_dpy =
225 dri2_egl_display(dri2_surf->base.Resource.Display);
226 struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
227 int age = 0;
228
229 if (dri2_surf->back == NULL) {
230 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
231 if (!dri2_surf->color_buffers[i].locked &&
232 dri2_surf->color_buffers[i].age >= age) {
233 dri2_surf->back = &dri2_surf->color_buffers[i];
234 age = dri2_surf->color_buffers[i].age;
235 }
236 }
237 }
238
239 if (dri2_surf->back == NULL)
240 return -1;
241 if (dri2_surf->back->bo == NULL) {
242 if (surf->base.modifiers)
243 dri2_surf->back->bo = gbm_bo_create_with_modifiers(&dri2_dpy->gbm_dri->base,
244 surf->base.width,
245 surf->base.height,
246 surf->base.format,
247 surf->base.modifiers,
248 surf->base.count);
249 else
250 dri2_surf->back->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
251 surf->base.width,
252 surf->base.height,
253 surf->base.format,
254 surf->base.flags);
255
256 }
257 if (dri2_surf->back->bo == NULL)
258 return -1;
259
260 return 0;
261 }
262
263 static int
264 get_swrast_front_bo(struct dri2_egl_surface *dri2_surf)
265 {
266 struct dri2_egl_display *dri2_dpy =
267 dri2_egl_display(dri2_surf->base.Resource.Display);
268 struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
269
270 if (dri2_surf->current == NULL) {
271 assert(!dri2_surf->color_buffers[0].locked);
272 dri2_surf->current = &dri2_surf->color_buffers[0];
273 }
274
275 if (dri2_surf->current->bo == NULL)
276 dri2_surf->current->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
277 surf->base.width, surf->base.height,
278 surf->base.format, surf->base.flags);
279 if (dri2_surf->current->bo == NULL)
280 return -1;
281
282 return 0;
283 }
284
285 static void
286 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
287 {
288 struct dri2_egl_display *dri2_dpy =
289 dri2_egl_display(dri2_surf->base.Resource.Display);
290 struct gbm_dri_bo *bo;
291 int name, pitch;
292
293 bo = gbm_dri_bo(dri2_surf->back->bo);
294
295 dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_NAME, &name);
296 dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
297
298 buffer->attachment = __DRI_BUFFER_BACK_LEFT;
299 buffer->name = name;
300 buffer->pitch = pitch;
301 buffer->cpp = 4;
302 buffer->flags = 0;
303 }
304
305 static __DRIbuffer *
306 dri2_drm_get_buffers_with_format(__DRIdrawable *driDrawable,
307 int *width, int *height,
308 unsigned int *attachments, int count,
309 int *out_count, void *loaderPrivate)
310 {
311 struct dri2_egl_surface *dri2_surf = loaderPrivate;
312 int i, j;
313
314 for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
315 __DRIbuffer *local;
316
317 assert(attachments[i] < __DRI_BUFFER_COUNT);
318 assert(j < ARRAY_SIZE(dri2_surf->buffers));
319
320 switch (attachments[i]) {
321 case __DRI_BUFFER_BACK_LEFT:
322 if (get_back_bo(dri2_surf) < 0) {
323 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
324 return NULL;
325 }
326 back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
327 break;
328 default:
329 local = dri2_egl_surface_alloc_local_buffer(dri2_surf, attachments[i],
330 attachments[i + 1]);
331
332 if (!local) {
333 _eglError(EGL_BAD_ALLOC, "failed to allocate local buffer");
334 return NULL;
335 }
336 dri2_surf->buffers[j] = *local;
337 break;
338 }
339 }
340
341 *out_count = j;
342 if (j == 0)
343 return NULL;
344
345 *width = dri2_surf->base.Width;
346 *height = dri2_surf->base.Height;
347
348 return dri2_surf->buffers;
349 }
350
351 static __DRIbuffer *
352 dri2_drm_get_buffers(__DRIdrawable * driDrawable,
353 int *width, int *height,
354 unsigned int *attachments, int count,
355 int *out_count, void *loaderPrivate)
356 {
357 unsigned int *attachments_with_format;
358 __DRIbuffer *buffer;
359 const unsigned int format = 32;
360
361 attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
362 if (!attachments_with_format) {
363 *out_count = 0;
364 return NULL;
365 }
366
367 for (int i = 0; i < count; ++i) {
368 attachments_with_format[2*i] = attachments[i];
369 attachments_with_format[2*i + 1] = format;
370 }
371
372 buffer =
373 dri2_drm_get_buffers_with_format(driDrawable,
374 width, height,
375 attachments_with_format, count,
376 out_count, loaderPrivate);
377
378 free(attachments_with_format);
379
380 return buffer;
381 }
382
383 static int
384 dri2_drm_image_get_buffers(__DRIdrawable *driDrawable,
385 unsigned int format,
386 uint32_t *stamp,
387 void *loaderPrivate,
388 uint32_t buffer_mask,
389 struct __DRIimageList *buffers)
390 {
391 struct dri2_egl_surface *dri2_surf = loaderPrivate;
392 struct gbm_dri_bo *bo;
393
394 if (get_back_bo(dri2_surf) < 0)
395 return 0;
396
397 bo = gbm_dri_bo(dri2_surf->back->bo);
398 buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
399 buffers->back = bo->image;
400
401 return 1;
402 }
403
404 static void
405 dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
406 {
407 (void) driDrawable;
408 (void) loaderPrivate;
409 }
410
411 static EGLBoolean
412 dri2_drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw)
413 {
414 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
415 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
416
417 if (!dri2_dpy->flush) {
418 dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
419 return EGL_TRUE;
420 }
421
422 if (dri2_surf->current)
423 _eglError(EGL_BAD_SURFACE, "dri2_swap_buffers");
424 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
425 if (dri2_surf->color_buffers[i].age > 0)
426 dri2_surf->color_buffers[i].age++;
427
428 /* Make sure we have a back buffer in case we're swapping without
429 * ever rendering. */
430 if (get_back_bo(dri2_surf) < 0)
431 return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
432
433 dri2_surf->current = dri2_surf->back;
434 dri2_surf->current->age = 1;
435 dri2_surf->back = NULL;
436
437 dri2_flush_drawable_for_swapbuffers(disp, draw);
438 dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
439
440 return EGL_TRUE;
441 }
442
443 static EGLint
444 dri2_drm_query_buffer_age(_EGLDriver *drv,
445 _EGLDisplay *disp, _EGLSurface *surface)
446 {
447 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
448
449 if (get_back_bo(dri2_surf) < 0) {
450 _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
451 return -1;
452 }
453
454 return dri2_surf->back->age;
455 }
456
457 static _EGLImage *
458 dri2_drm_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
459 EGLClientBuffer buffer, const EGLint *attr_list)
460 {
461 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
462 struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer);
463 struct dri2_egl_image *dri2_img;
464
465 dri2_img = malloc(sizeof *dri2_img);
466 if (!dri2_img) {
467 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
468 return NULL;
469 }
470
471 _eglInitImage(&dri2_img->base, disp);
472
473 dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img);
474 if (dri2_img->dri_image == NULL) {
475 free(dri2_img);
476 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
477 return NULL;
478 }
479
480 return &dri2_img->base;
481 }
482
483 static _EGLImage *
484 dri2_drm_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
485 _EGLContext *ctx, EGLenum target,
486 EGLClientBuffer buffer, const EGLint *attr_list)
487 {
488 (void) drv;
489
490 switch (target) {
491 case EGL_NATIVE_PIXMAP_KHR:
492 return dri2_drm_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
493 default:
494 return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list);
495 }
496 }
497
498 static int
499 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
500 {
501 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
502
503 return drmAuthMagic(dri2_dpy->fd, id);
504 }
505
506 static void
507 swrast_put_image2(__DRIdrawable *driDrawable,
508 int op,
509 int x,
510 int y,
511 int width,
512 int height,
513 int stride,
514 char *data,
515 void *loaderPrivate)
516 {
517 struct dri2_egl_surface *dri2_surf = loaderPrivate;
518 int internal_stride;
519 struct gbm_dri_bo *bo;
520 uint32_t bpp;
521 int x_bytes, width_bytes;
522 char *src, *dst;
523
524 if (op != __DRI_SWRAST_IMAGE_OP_DRAW &&
525 op != __DRI_SWRAST_IMAGE_OP_SWAP)
526 return;
527
528 if (get_swrast_front_bo(dri2_surf) < 0)
529 return;
530
531 bo = gbm_dri_bo(dri2_surf->current->bo);
532
533 bpp = gbm_bo_get_bpp(&bo->base);
534 if (bpp == 0)
535 return;
536
537 x_bytes = x * (bpp >> 3);
538 width_bytes = width * (bpp >> 3);
539
540 if (gbm_dri_bo_map_dumb(bo) == NULL)
541 return;
542
543 internal_stride = bo->base.stride;
544
545 dst = bo->map + x_bytes + (y * internal_stride);
546 src = data;
547
548 for (int i = 0; i < height; i++) {
549 memcpy(dst, src, width_bytes);
550 dst += internal_stride;
551 src += stride;
552 }
553
554 gbm_dri_bo_unmap_dumb(bo);
555 }
556
557 static void
558 swrast_get_image(__DRIdrawable *driDrawable,
559 int x,
560 int y,
561 int width,
562 int height,
563 char *data,
564 void *loaderPrivate)
565 {
566 struct dri2_egl_surface *dri2_surf = loaderPrivate;
567 int internal_stride, stride;
568 struct gbm_dri_bo *bo;
569 uint32_t bpp;
570 int x_bytes, width_bytes;
571 char *src, *dst;
572
573 if (get_swrast_front_bo(dri2_surf) < 0)
574 return;
575
576 bo = gbm_dri_bo(dri2_surf->current->bo);
577
578 bpp = gbm_bo_get_bpp(&bo->base);
579 if (bpp == 0)
580 return;
581
582 x_bytes = x * (bpp >> 3);
583 width_bytes = width * (bpp >> 3);
584
585 internal_stride = bo->base.stride;
586 stride = width_bytes;
587
588 if (gbm_dri_bo_map_dumb(bo) == NULL)
589 return;
590
591 dst = data;
592 src = bo->map + x_bytes + (y * internal_stride);
593
594 for (int i = 0; i < height; i++) {
595 memcpy(dst, src, width_bytes);
596 dst += stride;
597 src += internal_stride;
598 }
599
600 gbm_dri_bo_unmap_dumb(bo);
601 }
602
603 static EGLBoolean
604 drm_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
605 {
606 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
607 const struct gbm_dri_visual *visuals = dri2_dpy->gbm_dri->visual_table;
608 int num_visuals = dri2_dpy->gbm_dri->num_visuals;
609 unsigned int format_count[num_visuals];
610 unsigned int config_count = 0;
611
612 memset(format_count, 0, num_visuals * sizeof(unsigned int));
613
614 for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) {
615 unsigned int red, green, blue, alpha;
616
617 dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
618 __DRI_ATTRIB_RED_MASK, &red);
619 dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
620 __DRI_ATTRIB_GREEN_MASK, &green);
621 dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
622 __DRI_ATTRIB_BLUE_MASK, &blue);
623 dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i],
624 __DRI_ATTRIB_ALPHA_MASK, &alpha);
625
626 for (unsigned j = 0; j < num_visuals; j++) {
627 struct dri2_egl_config *dri2_conf;
628
629 if (visuals[j].rgba_masks.red != red ||
630 visuals[j].rgba_masks.green != green ||
631 visuals[j].rgba_masks.blue != blue ||
632 visuals[j].rgba_masks.alpha != alpha)
633 continue;
634
635 const EGLint attr_list[] = {
636 EGL_NATIVE_VISUAL_ID, visuals[j].gbm_format,
637 EGL_NONE,
638 };
639
640 dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
641 config_count + 1, EGL_WINDOW_BIT, attr_list, NULL);
642 if (dri2_conf) {
643 if (dri2_conf->base.ConfigID == config_count + 1)
644 config_count++;
645 format_count[j]++;
646 }
647 }
648 }
649
650 for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
651 if (!format_count[i]) {
652 struct gbm_format_name_desc desc;
653 _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
654 gbm_format_get_name(visuals[i].gbm_format, &desc));
655 }
656 }
657
658 return (config_count != 0);
659 }
660
661 static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = {
662 .authenticate = dri2_drm_authenticate,
663 .create_window_surface = dri2_drm_create_window_surface,
664 .create_pixmap_surface = dri2_drm_create_pixmap_surface,
665 .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface,
666 .destroy_surface = dri2_drm_destroy_surface,
667 .create_image = dri2_drm_create_image_khr,
668 .swap_buffers = dri2_drm_swap_buffers,
669 .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
670 .swap_buffers_region = dri2_fallback_swap_buffers_region,
671 .set_damage_region = dri2_fallback_set_damage_region,
672 .post_sub_buffer = dri2_fallback_post_sub_buffer,
673 .copy_buffers = dri2_fallback_copy_buffers,
674 .query_buffer_age = dri2_drm_query_buffer_age,
675 .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
676 .get_sync_values = dri2_fallback_get_sync_values,
677 .get_dri_drawable = dri2_surface_get_dri_drawable,
678 };
679
680 EGLBoolean
681 dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp)
682 {
683 _EGLDevice *dev;
684 struct dri2_egl_display *dri2_dpy;
685 struct gbm_device *gbm;
686 const char *err;
687
688 /* Not supported yet */
689 if (disp->Options.ForceSoftware)
690 return EGL_FALSE;
691
692 dri2_dpy = calloc(1, sizeof *dri2_dpy);
693 if (!dri2_dpy)
694 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
695
696 dri2_dpy->fd = -1;
697 disp->DriverData = (void *) dri2_dpy;
698
699 gbm = disp->PlatformDisplay;
700 if (gbm == NULL) {
701 char buf[64];
702 int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0);
703 if (n != -1 && n < sizeof(buf))
704 dri2_dpy->fd = loader_open_device(buf);
705 gbm = gbm_create_device(dri2_dpy->fd);
706 if (gbm == NULL) {
707 err = "DRI2: failed to create gbm device";
708 goto cleanup;
709 }
710 dri2_dpy->own_device = true;
711 } else {
712 dri2_dpy->fd = fcntl(gbm_device_get_fd(gbm), F_DUPFD_CLOEXEC, 3);
713 if (dri2_dpy->fd < 0) {
714 err = "DRI2: failed to fcntl() existing gbm device";
715 goto cleanup;
716 }
717 }
718 dri2_dpy->gbm_dri = gbm_dri_device(gbm);
719
720 if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) {
721 err = "DRI2: gbm device using incorrect/incompatible backend";
722 goto cleanup;
723 }
724
725 dev = _eglAddDevice(dri2_dpy->fd, false);
726 if (!dev) {
727 err = "DRI2: failed to find EGLDevice";
728 goto cleanup;
729 }
730
731 disp->Device = dev;
732
733 dri2_dpy->driver_name = strdup(dri2_dpy->gbm_dri->driver_name);
734
735 dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen;
736 dri2_dpy->core = dri2_dpy->gbm_dri->core;
737 dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2;
738 dri2_dpy->swrast = dri2_dpy->gbm_dri->swrast;
739 dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs;
740
741 dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
742 dri2_dpy->gbm_dri->lookup_user_data = disp;
743
744 dri2_dpy->gbm_dri->get_buffers = dri2_drm_get_buffers;
745 dri2_dpy->gbm_dri->flush_front_buffer = dri2_drm_flush_front_buffer;
746 dri2_dpy->gbm_dri->get_buffers_with_format = dri2_drm_get_buffers_with_format;
747 dri2_dpy->gbm_dri->image_get_buffers = dri2_drm_image_get_buffers;
748 dri2_dpy->gbm_dri->swrast_put_image2 = swrast_put_image2;
749 dri2_dpy->gbm_dri->swrast_get_image = swrast_get_image;
750
751 dri2_dpy->gbm_dri->base.surface_lock_front_buffer = lock_front_buffer;
752 dri2_dpy->gbm_dri->base.surface_release_buffer = release_buffer;
753 dri2_dpy->gbm_dri->base.surface_has_free_buffers = has_free_buffers;
754
755 if (!dri2_setup_extensions(disp)) {
756 err = "DRI2: failed to find required DRI extensions";
757 goto cleanup;
758 }
759
760 dri2_setup_screen(disp);
761
762 if (!drm_add_configs_for_visuals(drv, disp)) {
763 err = "DRI2: failed to add configs";
764 goto cleanup;
765 }
766
767 disp->Extensions.KHR_image_pixmap = EGL_TRUE;
768 if (dri2_dpy->dri2)
769 disp->Extensions.EXT_buffer_age = EGL_TRUE;
770
771 #ifdef HAVE_WAYLAND_PLATFORM
772 dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
773 #endif
774 dri2_set_WL_bind_wayland_display(drv, disp);
775
776 /* Fill vtbl last to prevent accidentally calling virtual function during
777 * initialization.
778 */
779 dri2_dpy->vtbl = &dri2_drm_display_vtbl;
780
781 return EGL_TRUE;
782
783 cleanup:
784 dri2_display_destroy(disp);
785 return _eglError(EGL_NOT_INITIALIZED, err);
786 }
787
788 void
789 dri2_teardown_drm(struct dri2_egl_display *dri2_dpy)
790 {
791 if (dri2_dpy->own_device)
792 gbm_device_destroy(&dri2_dpy->gbm_dri->base);
793 }