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 "util/os_file.h"
40
41 #include "egl_dri2.h"
42 #include "loader.h"
43
44 static struct gbm_bo *
lock_front_buffer(struct gbm_surface * _surf)45 lock_front_buffer(struct gbm_surface *_surf)
46 {
47 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
48 struct dri2_egl_surface *dri2_surf = surf->dri_private;
49 struct gbm_dri_device *device = gbm_dri_device(_surf->gbm);
50 struct gbm_bo *bo;
51
52 if (dri2_surf->current == NULL) {
53 _eglError(EGL_BAD_SURFACE, "no front buffer");
54 return NULL;
55 }
56
57 bo = dri2_surf->current->bo;
58
59 if (device->dri2) {
60 dri2_surf->current->locked = true;
61 dri2_surf->current = NULL;
62 }
63
64 return bo;
65 }
66
67 static void
release_buffer(struct gbm_surface * _surf,struct gbm_bo * bo)68 release_buffer(struct gbm_surface *_surf, struct gbm_bo *bo)
69 {
70 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
71 struct dri2_egl_surface *dri2_surf = surf->dri_private;
72
73 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
74 if (dri2_surf->color_buffers[i].bo == bo) {
75 dri2_surf->color_buffers[i].locked = false;
76 break;
77 }
78 }
79 }
80
81 static int
has_free_buffers(struct gbm_surface * _surf)82 has_free_buffers(struct gbm_surface *_surf)
83 {
84 struct gbm_dri_surface *surf = gbm_dri_surface(_surf);
85 struct dri2_egl_surface *dri2_surf = surf->dri_private;
86
87 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
88 if (!dri2_surf->color_buffers[i].locked)
89 return 1;
90
91 return 0;
92 }
93
94 static bool
dri2_drm_config_is_compatible(struct dri2_egl_display * dri2_dpy,const __DRIconfig * config,struct gbm_surface * surface)95 dri2_drm_config_is_compatible(struct dri2_egl_display *dri2_dpy,
96 const __DRIconfig *config,
97 struct gbm_surface *surface)
98 {
99 const struct gbm_dri_visual *visual = NULL;
100 int shifts[4];
101 unsigned int sizes[4];
102 bool is_float;
103 int i;
104
105 /* Check that the EGLConfig being used to render to the surface is
106 * compatible with the surface format. Since mixing ARGB and XRGB of
107 * otherwise-compatible formats is relatively common, explicitly allow
108 * this.
109 */
110 dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
111
112 dri2_get_render_type_float(dri2_dpy->core, config, &is_float);
113
114 for (i = 0; i < dri2_dpy->gbm_dri->num_visuals; i++) {
115 visual = &dri2_dpy->gbm_dri->visual_table[i];
116 if (visual->gbm_format == surface->format)
117 break;
118 }
119
120 if (i == dri2_dpy->gbm_dri->num_visuals)
121 return false;
122
123 if (shifts[0] != visual->rgba_shifts.red ||
124 shifts[1] != visual->rgba_shifts.green ||
125 shifts[2] != visual->rgba_shifts.blue ||
126 (shifts[3] > -1 && visual->rgba_shifts.alpha > -1 &&
127 shifts[3] != visual->rgba_shifts.alpha) ||
128 sizes[0] != visual->rgba_sizes.red ||
129 sizes[1] != visual->rgba_sizes.green ||
130 sizes[2] != visual->rgba_sizes.blue ||
131 (sizes[3] > 0 && visual->rgba_sizes.alpha > 0 &&
132 sizes[3] != visual->rgba_sizes.alpha) ||
133 is_float != visual->is_float) {
134 return false;
135 }
136
137 return true;
138 }
139
140 static _EGLSurface *
dri2_drm_create_window_surface(_EGLDisplay * disp,_EGLConfig * conf,void * native_surface,const EGLint * attrib_list)141 dri2_drm_create_window_surface(_EGLDisplay *disp, _EGLConfig *conf,
142 void *native_surface, const EGLint *attrib_list)
143 {
144 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
145 struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
146 struct dri2_egl_surface *dri2_surf;
147 struct gbm_surface *surface = native_surface;
148 struct gbm_dri_surface *surf;
149 const __DRIconfig *config;
150
151 dri2_surf = calloc(1, sizeof *dri2_surf);
152 if (!dri2_surf) {
153 _eglError(EGL_BAD_ALLOC, "dri2_create_surface");
154 return NULL;
155 }
156
157 if (!dri2_init_surface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf,
158 attrib_list, false, native_surface))
159 goto cleanup_surf;
160
161 config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT,
162 dri2_surf->base.GLColorspace);
163
164 if (!config) {
165 _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
166 goto cleanup_surf;
167 }
168
169 if (!dri2_drm_config_is_compatible(dri2_dpy, config, surface)) {
170 _eglError(EGL_BAD_MATCH, "EGL config not compatible with GBM format");
171 goto cleanup_surf;
172 }
173
174 surf = gbm_dri_surface(surface);
175 dri2_surf->gbm_surf = surf;
176 dri2_surf->base.Width = surf->base.width;
177 dri2_surf->base.Height = surf->base.height;
178 surf->dri_private = dri2_surf;
179
180 if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf->gbm_surf))
181 goto cleanup_surf;
182
183 return &dri2_surf->base;
184
185 cleanup_surf:
186 free(dri2_surf);
187
188 return NULL;
189 }
190
191 static _EGLSurface *
dri2_drm_create_pixmap_surface(_EGLDisplay * disp,_EGLConfig * conf,void * native_window,const EGLint * attrib_list)192 dri2_drm_create_pixmap_surface(_EGLDisplay *disp, _EGLConfig *conf,
193 void *native_window, const EGLint *attrib_list)
194 {
195 /* From the EGL_MESA_platform_gbm spec, version 5:
196 *
197 * It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a <dpy>
198 * that belongs to the GBM platform. Any such call fails and generates
199 * EGL_BAD_PARAMETER.
200 */
201 _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on GBM");
202 return NULL;
203 }
204
205 static EGLBoolean
dri2_drm_destroy_surface(_EGLDisplay * disp,_EGLSurface * surf)206 dri2_drm_destroy_surface(_EGLDisplay *disp, _EGLSurface *surf)
207 {
208 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
209 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
210
211 dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
212
213 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
214 if (dri2_surf->color_buffers[i].bo)
215 gbm_bo_destroy(dri2_surf->color_buffers[i].bo);
216 }
217
218 dri2_egl_surface_free_local_buffers(dri2_surf);
219
220 dri2_fini_surface(surf);
221 free(surf);
222
223 return EGL_TRUE;
224 }
225
226 static int
get_back_bo(struct dri2_egl_surface * dri2_surf)227 get_back_bo(struct dri2_egl_surface *dri2_surf)
228 {
229 struct dri2_egl_display *dri2_dpy =
230 dri2_egl_display(dri2_surf->base.Resource.Display);
231 struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
232 int age = 0;
233
234 if (dri2_surf->back == NULL) {
235 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) {
236 if (!dri2_surf->color_buffers[i].locked &&
237 dri2_surf->color_buffers[i].age >= age) {
238 dri2_surf->back = &dri2_surf->color_buffers[i];
239 age = dri2_surf->color_buffers[i].age;
240 }
241 }
242 }
243
244 if (dri2_surf->back == NULL)
245 return -1;
246 if (dri2_surf->back->bo == NULL) {
247 if (surf->base.modifiers)
248 dri2_surf->back->bo = gbm_bo_create_with_modifiers(&dri2_dpy->gbm_dri->base,
249 surf->base.width,
250 surf->base.height,
251 surf->base.format,
252 surf->base.modifiers,
253 surf->base.count);
254 else {
255 unsigned flags = surf->base.flags;
256 if (dri2_surf->base.ProtectedContent)
257 flags |= GBM_BO_USE_PROTECTED;
258 dri2_surf->back->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
259 surf->base.width,
260 surf->base.height,
261 surf->base.format,
262 flags);
263 }
264
265 }
266 if (dri2_surf->back->bo == NULL)
267 return -1;
268
269 return 0;
270 }
271
272 static int
get_swrast_front_bo(struct dri2_egl_surface * dri2_surf)273 get_swrast_front_bo(struct dri2_egl_surface *dri2_surf)
274 {
275 struct dri2_egl_display *dri2_dpy =
276 dri2_egl_display(dri2_surf->base.Resource.Display);
277 struct gbm_dri_surface *surf = dri2_surf->gbm_surf;
278
279 if (dri2_surf->current == NULL) {
280 assert(!dri2_surf->color_buffers[0].locked);
281 dri2_surf->current = &dri2_surf->color_buffers[0];
282 }
283
284 if (dri2_surf->current->bo == NULL)
285 dri2_surf->current->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base,
286 surf->base.width, surf->base.height,
287 surf->base.format, surf->base.flags);
288 if (dri2_surf->current->bo == NULL)
289 return -1;
290
291 return 0;
292 }
293
294 static void
back_bo_to_dri_buffer(struct dri2_egl_surface * dri2_surf,__DRIbuffer * buffer)295 back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer)
296 {
297 struct dri2_egl_display *dri2_dpy =
298 dri2_egl_display(dri2_surf->base.Resource.Display);
299 struct gbm_dri_bo *bo;
300 int name, pitch;
301
302 bo = gbm_dri_bo(dri2_surf->back->bo);
303
304 dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_NAME, &name);
305 dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch);
306
307 buffer->attachment = __DRI_BUFFER_BACK_LEFT;
308 buffer->name = name;
309 buffer->pitch = pitch;
310 buffer->cpp = 4;
311 buffer->flags = 0;
312 }
313
314 static __DRIbuffer *
dri2_drm_get_buffers_with_format(__DRIdrawable * driDrawable,int * width,int * height,unsigned int * attachments,int count,int * out_count,void * loaderPrivate)315 dri2_drm_get_buffers_with_format(__DRIdrawable *driDrawable,
316 int *width, int *height,
317 unsigned int *attachments, int count,
318 int *out_count, void *loaderPrivate)
319 {
320 struct dri2_egl_surface *dri2_surf = loaderPrivate;
321 int i, j;
322
323 for (i = 0, j = 0; i < 2 * count; i += 2, j++) {
324 __DRIbuffer *local;
325
326 assert(attachments[i] < __DRI_BUFFER_COUNT);
327 assert(j < ARRAY_SIZE(dri2_surf->buffers));
328
329 switch (attachments[i]) {
330 case __DRI_BUFFER_BACK_LEFT:
331 if (get_back_bo(dri2_surf) < 0) {
332 _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer");
333 return NULL;
334 }
335 back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]);
336 break;
337 default:
338 local = dri2_egl_surface_alloc_local_buffer(dri2_surf, attachments[i],
339 attachments[i + 1]);
340
341 if (!local) {
342 _eglError(EGL_BAD_ALLOC, "failed to allocate local buffer");
343 return NULL;
344 }
345 dri2_surf->buffers[j] = *local;
346 break;
347 }
348 }
349
350 *out_count = j;
351 if (j == 0)
352 return NULL;
353
354 *width = dri2_surf->base.Width;
355 *height = dri2_surf->base.Height;
356
357 return dri2_surf->buffers;
358 }
359
360 static __DRIbuffer *
dri2_drm_get_buffers(__DRIdrawable * driDrawable,int * width,int * height,unsigned int * attachments,int count,int * out_count,void * loaderPrivate)361 dri2_drm_get_buffers(__DRIdrawable * driDrawable,
362 int *width, int *height,
363 unsigned int *attachments, int count,
364 int *out_count, void *loaderPrivate)
365 {
366 unsigned int *attachments_with_format;
367 __DRIbuffer *buffer;
368 const unsigned int format = 32;
369
370 attachments_with_format = calloc(count, 2 * sizeof(unsigned int));
371 if (!attachments_with_format) {
372 *out_count = 0;
373 return NULL;
374 }
375
376 for (int i = 0; i < count; ++i) {
377 attachments_with_format[2*i] = attachments[i];
378 attachments_with_format[2*i + 1] = format;
379 }
380
381 buffer =
382 dri2_drm_get_buffers_with_format(driDrawable,
383 width, height,
384 attachments_with_format, count,
385 out_count, loaderPrivate);
386
387 free(attachments_with_format);
388
389 return buffer;
390 }
391
392 static int
dri2_drm_image_get_buffers(__DRIdrawable * driDrawable,unsigned int format,uint32_t * stamp,void * loaderPrivate,uint32_t buffer_mask,struct __DRIimageList * buffers)393 dri2_drm_image_get_buffers(__DRIdrawable *driDrawable,
394 unsigned int format,
395 uint32_t *stamp,
396 void *loaderPrivate,
397 uint32_t buffer_mask,
398 struct __DRIimageList *buffers)
399 {
400 struct dri2_egl_surface *dri2_surf = loaderPrivate;
401 struct gbm_dri_bo *bo;
402
403 if (get_back_bo(dri2_surf) < 0)
404 return 0;
405
406 bo = gbm_dri_bo(dri2_surf->back->bo);
407 buffers->image_mask = __DRI_IMAGE_BUFFER_BACK;
408 buffers->back = bo->image;
409
410 return 1;
411 }
412
413 static void
dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable,void * loaderPrivate)414 dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate)
415 {
416 (void) driDrawable;
417 (void) loaderPrivate;
418 }
419
420 static EGLBoolean
dri2_drm_swap_buffers(_EGLDisplay * disp,_EGLSurface * draw)421 dri2_drm_swap_buffers(_EGLDisplay *disp, _EGLSurface *draw)
422 {
423 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
424 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw);
425
426 if (!dri2_dpy->flush) {
427 dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable);
428 return EGL_TRUE;
429 }
430
431 if (dri2_surf->current)
432 _eglError(EGL_BAD_SURFACE, "dri2_swap_buffers");
433 for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++)
434 if (dri2_surf->color_buffers[i].age > 0)
435 dri2_surf->color_buffers[i].age++;
436
437 /* Make sure we have a back buffer in case we're swapping without
438 * ever rendering. */
439 if (get_back_bo(dri2_surf) < 0)
440 return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers");
441
442 dri2_surf->current = dri2_surf->back;
443 dri2_surf->current->age = 1;
444 dri2_surf->back = NULL;
445
446 dri2_flush_drawable_for_swapbuffers(disp, draw);
447 dri2_dpy->flush->invalidate(dri2_surf->dri_drawable);
448
449 return EGL_TRUE;
450 }
451
452 static EGLint
dri2_drm_query_buffer_age(_EGLDisplay * disp,_EGLSurface * surface)453 dri2_drm_query_buffer_age(_EGLDisplay *disp, _EGLSurface *surface)
454 {
455 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface);
456
457 if (get_back_bo(dri2_surf) < 0) {
458 _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age");
459 return -1;
460 }
461
462 return dri2_surf->back->age;
463 }
464
465 static _EGLImage *
dri2_drm_create_image_khr_pixmap(_EGLDisplay * disp,_EGLContext * ctx,EGLClientBuffer buffer,const EGLint * attr_list)466 dri2_drm_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx,
467 EGLClientBuffer buffer, const EGLint *attr_list)
468 {
469 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
470 struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer);
471 struct dri2_egl_image *dri2_img;
472
473 dri2_img = malloc(sizeof *dri2_img);
474 if (!dri2_img) {
475 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
476 return NULL;
477 }
478
479 _eglInitImage(&dri2_img->base, disp);
480
481 dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img);
482 if (dri2_img->dri_image == NULL) {
483 free(dri2_img);
484 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap");
485 return NULL;
486 }
487
488 return &dri2_img->base;
489 }
490
491 static _EGLImage *
dri2_drm_create_image_khr(_EGLDisplay * disp,_EGLContext * ctx,EGLenum target,EGLClientBuffer buffer,const EGLint * attr_list)492 dri2_drm_create_image_khr(_EGLDisplay *disp, _EGLContext *ctx, EGLenum target,
493 EGLClientBuffer buffer, const EGLint *attr_list)
494 {
495 switch (target) {
496 case EGL_NATIVE_PIXMAP_KHR:
497 return dri2_drm_create_image_khr_pixmap(disp, ctx, buffer, attr_list);
498 default:
499 return dri2_create_image_khr(disp, ctx, target, buffer, attr_list);
500 }
501 }
502
503 static int
dri2_drm_authenticate(_EGLDisplay * disp,uint32_t id)504 dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id)
505 {
506 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
507
508 return drmAuthMagic(dri2_dpy->fd, id);
509 }
510
511 static void
swrast_put_image2(__DRIdrawable * driDrawable,int op,int x,int y,int width,int height,int stride,char * data,void * loaderPrivate)512 swrast_put_image2(__DRIdrawable *driDrawable,
513 int op,
514 int x,
515 int y,
516 int width,
517 int height,
518 int stride,
519 char *data,
520 void *loaderPrivate)
521 {
522 struct dri2_egl_surface *dri2_surf = loaderPrivate;
523 int internal_stride;
524 struct gbm_dri_bo *bo;
525 uint32_t bpp;
526 int x_bytes, width_bytes;
527 char *src, *dst;
528
529 if (op != __DRI_SWRAST_IMAGE_OP_DRAW &&
530 op != __DRI_SWRAST_IMAGE_OP_SWAP)
531 return;
532
533 if (get_swrast_front_bo(dri2_surf) < 0)
534 return;
535
536 bo = gbm_dri_bo(dri2_surf->current->bo);
537
538 bpp = gbm_bo_get_bpp(&bo->base);
539 if (bpp == 0)
540 return;
541
542 x_bytes = x * (bpp >> 3);
543 width_bytes = width * (bpp >> 3);
544
545 if (gbm_dri_bo_map_dumb(bo) == NULL)
546 return;
547
548 internal_stride = bo->base.stride;
549
550 dst = bo->map + x_bytes + (y * internal_stride);
551 src = data;
552
553 for (int i = 0; i < height; i++) {
554 memcpy(dst, src, width_bytes);
555 dst += internal_stride;
556 src += stride;
557 }
558
559 gbm_dri_bo_unmap_dumb(bo);
560 }
561
562 static void
swrast_get_image(__DRIdrawable * driDrawable,int x,int y,int width,int height,char * data,void * loaderPrivate)563 swrast_get_image(__DRIdrawable *driDrawable,
564 int x,
565 int y,
566 int width,
567 int height,
568 char *data,
569 void *loaderPrivate)
570 {
571 struct dri2_egl_surface *dri2_surf = loaderPrivate;
572 int internal_stride, stride;
573 struct gbm_dri_bo *bo;
574 uint32_t bpp;
575 int x_bytes, width_bytes;
576 char *src, *dst;
577
578 if (get_swrast_front_bo(dri2_surf) < 0)
579 return;
580
581 bo = gbm_dri_bo(dri2_surf->current->bo);
582
583 bpp = gbm_bo_get_bpp(&bo->base);
584 if (bpp == 0)
585 return;
586
587 x_bytes = x * (bpp >> 3);
588 width_bytes = width * (bpp >> 3);
589
590 internal_stride = bo->base.stride;
591 stride = width_bytes;
592
593 if (gbm_dri_bo_map_dumb(bo) == NULL)
594 return;
595
596 dst = data;
597 src = bo->map + x_bytes + (y * internal_stride);
598
599 for (int i = 0; i < height; i++) {
600 memcpy(dst, src, width_bytes);
601 dst += stride;
602 src += internal_stride;
603 }
604
605 gbm_dri_bo_unmap_dumb(bo);
606 }
607
608 static EGLBoolean
drm_add_configs_for_visuals(_EGLDisplay * disp)609 drm_add_configs_for_visuals(_EGLDisplay *disp)
610 {
611 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
612 const struct gbm_dri_visual *visuals = dri2_dpy->gbm_dri->visual_table;
613 int num_visuals = dri2_dpy->gbm_dri->num_visuals;
614 unsigned int format_count[num_visuals];
615 unsigned int config_count = 0;
616
617 memset(format_count, 0, num_visuals * sizeof(unsigned int));
618
619 for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) {
620 const __DRIconfig *config = dri2_dpy->driver_configs[i];
621 int shifts[4];
622 unsigned int sizes[4];
623 bool is_float;
624
625 dri2_get_shifts_and_sizes(dri2_dpy->core, config, shifts, sizes);
626
627 dri2_get_render_type_float(dri2_dpy->core, config, &is_float);
628
629 for (unsigned j = 0; j < num_visuals; j++) {
630 struct dri2_egl_config *dri2_conf;
631
632 if (visuals[j].rgba_shifts.red != shifts[0] ||
633 visuals[j].rgba_shifts.green != shifts[1] ||
634 visuals[j].rgba_shifts.blue != shifts[2] ||
635 visuals[j].rgba_shifts.alpha != shifts[3] ||
636 visuals[j].rgba_sizes.red != sizes[0] ||
637 visuals[j].rgba_sizes.green != sizes[1] ||
638 visuals[j].rgba_sizes.blue != sizes[2] ||
639 visuals[j].rgba_sizes.alpha != sizes[3] ||
640 visuals[j].is_float != is_float)
641 continue;
642
643 const EGLint attr_list[] = {
644 EGL_NATIVE_VISUAL_ID, visuals[j].gbm_format,
645 EGL_NONE,
646 };
647
648 dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
649 config_count + 1, EGL_WINDOW_BIT, attr_list, NULL, NULL);
650 if (dri2_conf) {
651 if (dri2_conf->base.ConfigID == config_count + 1)
652 config_count++;
653 format_count[j]++;
654 }
655 }
656 }
657
658 for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
659 if (!format_count[i]) {
660 struct gbm_format_name_desc desc;
661 _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
662 gbm_format_get_name(visuals[i].gbm_format, &desc));
663 }
664 }
665
666 return (config_count != 0);
667 }
668
669 static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = {
670 .authenticate = dri2_drm_authenticate,
671 .create_window_surface = dri2_drm_create_window_surface,
672 .create_pixmap_surface = dri2_drm_create_pixmap_surface,
673 .destroy_surface = dri2_drm_destroy_surface,
674 .create_image = dri2_drm_create_image_khr,
675 .swap_buffers = dri2_drm_swap_buffers,
676 .query_buffer_age = dri2_drm_query_buffer_age,
677 .get_dri_drawable = dri2_surface_get_dri_drawable,
678 };
679
680 EGLBoolean
dri2_initialize_drm(_EGLDisplay * disp)681 dri2_initialize_drm(_EGLDisplay *disp)
682 {
683 _EGLDevice *dev;
684 struct dri2_egl_display *dri2_dpy;
685 struct gbm_device *gbm;
686 const char *err;
687
688 dri2_dpy = calloc(1, sizeof *dri2_dpy);
689 if (!dri2_dpy)
690 return _eglError(EGL_BAD_ALLOC, "eglInitialize");
691
692 dri2_dpy->fd = -1;
693 disp->DriverData = (void *) dri2_dpy;
694
695 gbm = disp->PlatformDisplay;
696 if (gbm == NULL) {
697 char buf[64];
698 int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0);
699 if (n != -1 && n < sizeof(buf))
700 dri2_dpy->fd = loader_open_device(buf);
701 gbm = gbm_create_device(dri2_dpy->fd);
702 if (gbm == NULL) {
703 err = "DRI2: failed to create gbm device";
704 goto cleanup;
705 }
706 dri2_dpy->own_device = true;
707 } else {
708 dri2_dpy->fd = os_dupfd_cloexec(gbm_device_get_fd(gbm));
709 if (dri2_dpy->fd < 0) {
710 err = "DRI2: failed to fcntl() existing gbm device";
711 goto cleanup;
712 }
713 }
714 dri2_dpy->gbm_dri = gbm_dri_device(gbm);
715
716 if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) {
717 err = "DRI2: gbm device using incorrect/incompatible backend";
718 goto cleanup;
719 }
720
721 dev = _eglAddDevice(dri2_dpy->fd, disp->Options.ForceSoftware);
722 if (!dev) {
723 err = "DRI2: failed to find EGLDevice";
724 goto cleanup;
725 }
726
727 disp->Device = dev;
728
729 dri2_dpy->driver_name = strdup(dri2_dpy->gbm_dri->driver_name);
730 dri2_dpy->is_render_node = drmGetNodeTypeFromFd(dri2_dpy->fd) == DRM_NODE_RENDER;
731
732 /* render nodes cannot use Gem names, and thus do not support
733 * the __DRI_DRI2_LOADER extension */
734 if (!dri2_dpy->is_render_node) {
735 if (!dri2_load_driver(disp)) {
736 err = "DRI2: failed to load driver";
737 goto cleanup;
738 }
739 } else {
740 if (!dri2_load_driver_dri3(disp)) {
741 err = "DRI3: failed to load driver";
742 goto cleanup;
743 }
744 }
745
746 dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen;
747 dri2_dpy->core = dri2_dpy->gbm_dri->core;
748 dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2;
749 dri2_dpy->swrast = dri2_dpy->gbm_dri->swrast;
750 dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs;
751
752 dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image;
753 dri2_dpy->gbm_dri->lookup_user_data = disp;
754
755 dri2_dpy->gbm_dri->get_buffers = dri2_drm_get_buffers;
756 dri2_dpy->gbm_dri->flush_front_buffer = dri2_drm_flush_front_buffer;
757 dri2_dpy->gbm_dri->get_buffers_with_format = dri2_drm_get_buffers_with_format;
758 dri2_dpy->gbm_dri->image_get_buffers = dri2_drm_image_get_buffers;
759 dri2_dpy->gbm_dri->swrast_put_image2 = swrast_put_image2;
760 dri2_dpy->gbm_dri->swrast_get_image = swrast_get_image;
761
762 dri2_dpy->gbm_dri->base.surface_lock_front_buffer = lock_front_buffer;
763 dri2_dpy->gbm_dri->base.surface_release_buffer = release_buffer;
764 dri2_dpy->gbm_dri->base.surface_has_free_buffers = has_free_buffers;
765
766 if (!dri2_setup_extensions(disp)) {
767 err = "DRI2: failed to find required DRI extensions";
768 goto cleanup;
769 }
770
771 dri2_setup_screen(disp);
772
773 if (!drm_add_configs_for_visuals(disp)) {
774 err = "DRI2: failed to add configs";
775 goto cleanup;
776 }
777
778 disp->Extensions.KHR_image_pixmap = EGL_TRUE;
779 if (dri2_dpy->dri2)
780 disp->Extensions.EXT_buffer_age = EGL_TRUE;
781
782 #ifdef HAVE_WAYLAND_PLATFORM
783 dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
784 #endif
785 dri2_set_WL_bind_wayland_display(disp);
786
787 /* Fill vtbl last to prevent accidentally calling virtual function during
788 * initialization.
789 */
790 dri2_dpy->vtbl = &dri2_drm_display_vtbl;
791
792 return EGL_TRUE;
793
794 cleanup:
795 dri2_display_destroy(disp);
796 return _eglError(EGL_NOT_INITIALIZED, err);
797 }
798
799 void
dri2_teardown_drm(struct dri2_egl_display * dri2_dpy)800 dri2_teardown_drm(struct dri2_egl_display *dri2_dpy)
801 {
802 if (dri2_dpy->own_device)
803 gbm_device_destroy(&dri2_dpy->gbm_dri->base);
804 }
805