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10309e6eeaf06e32c13555b7aa7aab1071da2588
[mesa.git] / src / egl / drivers / dri2 / egl_dri2.c
1 /*
2 * Copyright © 2010 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 <stdlib.h>
29 #include <string.h>
30 #include <stdio.h>
31 #include <limits.h>
32 #include <dlfcn.h>
33 #include <fcntl.h>
34 #include <errno.h>
35 #include <unistd.h>
36 #include <xf86drm.h>
37 #include <GL/gl.h>
38 #include <GL/internal/dri_interface.h>
39 #include <sys/types.h>
40 #include <sys/stat.h>
41
42 #include "egl_dri2.h"
43
44 const __DRIuseInvalidateExtension use_invalidate = {
45 { __DRI_USE_INVALIDATE, 1 }
46 };
47
48 EGLint dri2_to_egl_attribute_map[] = {
49 0,
50 EGL_BUFFER_SIZE, /* __DRI_ATTRIB_BUFFER_SIZE */
51 EGL_LEVEL, /* __DRI_ATTRIB_LEVEL */
52 EGL_RED_SIZE, /* __DRI_ATTRIB_RED_SIZE */
53 EGL_GREEN_SIZE, /* __DRI_ATTRIB_GREEN_SIZE */
54 EGL_BLUE_SIZE, /* __DRI_ATTRIB_BLUE_SIZE */
55 EGL_LUMINANCE_SIZE, /* __DRI_ATTRIB_LUMINANCE_SIZE */
56 EGL_ALPHA_SIZE, /* __DRI_ATTRIB_ALPHA_SIZE */
57 0, /* __DRI_ATTRIB_ALPHA_MASK_SIZE */
58 EGL_DEPTH_SIZE, /* __DRI_ATTRIB_DEPTH_SIZE */
59 EGL_STENCIL_SIZE, /* __DRI_ATTRIB_STENCIL_SIZE */
60 0, /* __DRI_ATTRIB_ACCUM_RED_SIZE */
61 0, /* __DRI_ATTRIB_ACCUM_GREEN_SIZE */
62 0, /* __DRI_ATTRIB_ACCUM_BLUE_SIZE */
63 0, /* __DRI_ATTRIB_ACCUM_ALPHA_SIZE */
64 EGL_SAMPLE_BUFFERS, /* __DRI_ATTRIB_SAMPLE_BUFFERS */
65 EGL_SAMPLES, /* __DRI_ATTRIB_SAMPLES */
66 0, /* __DRI_ATTRIB_RENDER_TYPE, */
67 0, /* __DRI_ATTRIB_CONFIG_CAVEAT */
68 0, /* __DRI_ATTRIB_CONFORMANT */
69 0, /* __DRI_ATTRIB_DOUBLE_BUFFER */
70 0, /* __DRI_ATTRIB_STEREO */
71 0, /* __DRI_ATTRIB_AUX_BUFFERS */
72 0, /* __DRI_ATTRIB_TRANSPARENT_TYPE */
73 0, /* __DRI_ATTRIB_TRANSPARENT_INDEX_VALUE */
74 0, /* __DRI_ATTRIB_TRANSPARENT_RED_VALUE */
75 0, /* __DRI_ATTRIB_TRANSPARENT_GREEN_VALUE */
76 0, /* __DRI_ATTRIB_TRANSPARENT_BLUE_VALUE */
77 0, /* __DRI_ATTRIB_TRANSPARENT_ALPHA_VALUE */
78 0, /* __DRI_ATTRIB_FLOAT_MODE */
79 0, /* __DRI_ATTRIB_RED_MASK */
80 0, /* __DRI_ATTRIB_GREEN_MASK */
81 0, /* __DRI_ATTRIB_BLUE_MASK */
82 0, /* __DRI_ATTRIB_ALPHA_MASK */
83 EGL_MAX_PBUFFER_WIDTH, /* __DRI_ATTRIB_MAX_PBUFFER_WIDTH */
84 EGL_MAX_PBUFFER_HEIGHT, /* __DRI_ATTRIB_MAX_PBUFFER_HEIGHT */
85 EGL_MAX_PBUFFER_PIXELS, /* __DRI_ATTRIB_MAX_PBUFFER_PIXELS */
86 0, /* __DRI_ATTRIB_OPTIMAL_PBUFFER_WIDTH */
87 0, /* __DRI_ATTRIB_OPTIMAL_PBUFFER_HEIGHT */
88 0, /* __DRI_ATTRIB_VISUAL_SELECT_GROUP */
89 0, /* __DRI_ATTRIB_SWAP_METHOD */
90 EGL_MAX_SWAP_INTERVAL, /* __DRI_ATTRIB_MAX_SWAP_INTERVAL */
91 EGL_MIN_SWAP_INTERVAL, /* __DRI_ATTRIB_MIN_SWAP_INTERVAL */
92 0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGB */
93 0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
94 0, /* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
95 0, /* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
96 EGL_Y_INVERTED_NOK, /* __DRI_ATTRIB_YINVERTED */
97 0, /* __DRI_ATTRIB_FRAMEBUFFER_SRGB_CAPABLE */
98 };
99
100 struct dri2_egl_config *
101 dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
102 int depth, EGLint surface_type, const EGLint *attr_list)
103 {
104 struct dri2_egl_config *conf;
105 struct dri2_egl_display *dri2_dpy;
106 _EGLConfig base;
107 unsigned int attrib, value, double_buffer;
108 EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
109 _EGLConfig *matching_config;
110 EGLint num_configs = 0;
111 EGLint config_id;
112 int i;
113
114 dri2_dpy = disp->DriverData;
115 _eglInitConfig(&base, disp, id);
116
117 i = 0;
118 double_buffer = 0;
119 bind_to_texture_rgb = 0;
120 bind_to_texture_rgba = 0;
121
122 while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
123 switch (attrib) {
124 case __DRI_ATTRIB_RENDER_TYPE:
125 if (value & __DRI_ATTRIB_RGBA_BIT)
126 value = EGL_RGB_BUFFER;
127 else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
128 value = EGL_LUMINANCE_BUFFER;
129 else
130 /* not valid */;
131 _eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
132 break;
133
134 case __DRI_ATTRIB_CONFIG_CAVEAT:
135 if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
136 value = EGL_NON_CONFORMANT_CONFIG;
137 else if (value & __DRI_ATTRIB_SLOW_BIT)
138 value = EGL_SLOW_CONFIG;
139 else
140 value = EGL_NONE;
141 _eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
142 break;
143
144 case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
145 bind_to_texture_rgb = value;
146 break;
147
148 case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
149 bind_to_texture_rgba = value;
150 break;
151
152 case __DRI_ATTRIB_DOUBLE_BUFFER:
153 double_buffer = value;
154 break;
155
156 default:
157 key = dri2_to_egl_attribute_map[attrib];
158 if (key != 0)
159 _eglSetConfigKey(&base, key, value);
160 break;
161 }
162 }
163
164 if (attr_list)
165 for (i = 0; attr_list[i] != EGL_NONE; i += 2)
166 _eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
167
168 if (depth > 0 && depth != base.BufferSize)
169 return NULL;
170
171 base.NativeRenderable = EGL_TRUE;
172
173 base.SurfaceType = surface_type;
174 if (surface_type & (EGL_PBUFFER_BIT |
175 (disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
176 base.BindToTextureRGB = bind_to_texture_rgb;
177 if (base.AlphaSize > 0)
178 base.BindToTextureRGBA = bind_to_texture_rgba;
179 }
180
181 base.RenderableType = disp->ClientAPIs;
182 base.Conformant = disp->ClientAPIs;
183
184 if (!_eglValidateConfig(&base, EGL_FALSE)) {
185 _eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
186 return NULL;
187 }
188
189 config_id = base.ConfigID;
190 base.ConfigID = EGL_DONT_CARE;
191 base.SurfaceType = EGL_DONT_CARE;
192 num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
193 (_EGLArrayForEach) _eglMatchConfig, &base);
194
195 if (num_configs == 1) {
196 conf = (struct dri2_egl_config *) matching_config;
197
198 if (double_buffer && !conf->dri_double_config)
199 conf->dri_double_config = dri_config;
200 else if (!double_buffer && !conf->dri_single_config)
201 conf->dri_single_config = dri_config;
202 else
203 /* a similar config type is already added
204 * => attach it as new config
205 */
206 num_configs = 0;
207 }
208 else if (num_configs == 0) {
209 conf = malloc(sizeof *conf);
210 if (conf == NULL)
211 return NULL;
212
213 memcpy(&conf->base, &base, sizeof base);
214 if (double_buffer) {
215 conf->dri_double_config = dri_config;
216 conf->dri_single_config = NULL;
217 } else {
218 conf->dri_single_config = dri_config;
219 conf->dri_double_config = NULL;
220 }
221 conf->base.SurfaceType = 0;
222 conf->base.ConfigID = config_id;
223
224 _eglLinkConfig(&conf->base);
225 }
226 else {
227 assert(0);
228 return NULL;
229 }
230
231 conf->base.SurfaceType |= surface_type & (!double_buffer ? EGL_PIXMAP_BIT:
232 (EGL_WINDOW_BIT | EGL_PBUFFER_BIT | EGL_SWAP_BEHAVIOR_PRESERVED_BIT));
233
234 return conf;
235 }
236
237 static __DRIimage *
238 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
239 {
240 _EGLDisplay *disp = data;
241 struct dri2_egl_image *dri2_img;
242 _EGLImage *img;
243
244 (void) screen;
245
246 img = _eglLookupImage(image, disp);
247 if (img == NULL) {
248 _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
249 return NULL;
250 }
251
252 dri2_img = dri2_egl_image(image);
253
254 return dri2_img->dri_image;
255 }
256
257 const __DRIimageLookupExtension image_lookup_extension = {
258 { __DRI_IMAGE_LOOKUP, 1 },
259 dri2_lookup_egl_image
260 };
261
262 static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
263
264 struct dri2_extension_match {
265 const char *name;
266 int version;
267 int offset;
268 };
269
270 static struct dri2_extension_match dri2_driver_extensions[] = {
271 { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
272 { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
273 { NULL, 0, 0 }
274 };
275
276 static struct dri2_extension_match dri2_core_extensions[] = {
277 { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
278 { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
279 { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
280 { NULL, 0, 0 }
281 };
282
283 static struct dri2_extension_match swrast_driver_extensions[] = {
284 { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
285 { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
286 { NULL }
287 };
288
289 static struct dri2_extension_match swrast_core_extensions[] = {
290 { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
291 { NULL }
292 };
293
294 static EGLBoolean
295 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
296 struct dri2_extension_match *matches,
297 const __DRIextension **extensions)
298 {
299 int i, j, ret = EGL_TRUE;
300 void *field;
301
302 for (i = 0; extensions[i]; i++) {
303 _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
304 for (j = 0; matches[j].name; j++) {
305 if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
306 extensions[i]->version >= matches[j].version) {
307 field = ((char *) dri2_dpy + matches[j].offset);
308 *(const __DRIextension **) field = extensions[i];
309 _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
310 extensions[i]->name, extensions[i]->version);
311 }
312 }
313 }
314
315 for (j = 0; matches[j].name; j++) {
316 field = ((char *) dri2_dpy + matches[j].offset);
317 if (*(const __DRIextension **) field == NULL) {
318 _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
319 matches[j].name, matches[j].version);
320 ret = EGL_FALSE;
321 }
322 }
323
324 return ret;
325 }
326
327 EGLBoolean
328 dri2_load_driver(_EGLDisplay *disp)
329 {
330 struct dri2_egl_display *dri2_dpy = disp->DriverData;
331 const __DRIextension **extensions;
332 char path[PATH_MAX], *search_paths, *p, *next, *end;
333
334 search_paths = NULL;
335 if (geteuid() == getuid()) {
336 /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
337 search_paths = getenv("LIBGL_DRIVERS_PATH");
338 }
339 if (search_paths == NULL)
340 search_paths = DEFAULT_DRIVER_DIR;
341
342 dri2_dpy->driver = NULL;
343 end = search_paths + strlen(search_paths);
344 for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
345 int len;
346 next = strchr(p, ':');
347 if (next == NULL)
348 next = end;
349
350 len = next - p;
351 #if GLX_USE_TLS
352 snprintf(path, sizeof path,
353 "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
354 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
355 #endif
356 if (dri2_dpy->driver == NULL) {
357 snprintf(path, sizeof path,
358 "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
359 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
360 if (dri2_dpy->driver == NULL)
361 _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
362 }
363 }
364
365 if (dri2_dpy->driver == NULL) {
366 _eglLog(_EGL_WARNING,
367 "DRI2: failed to open any driver (search paths %s)",
368 search_paths);
369 return EGL_FALSE;
370 }
371
372 _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
373 extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
374 if (extensions == NULL) {
375 _eglLog(_EGL_WARNING,
376 "DRI2: driver exports no extensions (%s)", dlerror());
377 dlclose(dri2_dpy->driver);
378 return EGL_FALSE;
379 }
380
381 if (strcmp(dri2_dpy->driver_name, "swrast") == 0) {
382 if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
383 dlclose(dri2_dpy->driver);
384 return EGL_FALSE;
385 }
386 } else {
387 if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
388 dlclose(dri2_dpy->driver);
389 return EGL_FALSE;
390 }
391 }
392
393 return EGL_TRUE;
394 }
395
396 EGLBoolean
397 dri2_create_screen(_EGLDisplay *disp)
398 {
399 const __DRIextension **extensions;
400 struct dri2_egl_display *dri2_dpy;
401 unsigned int api_mask;
402
403 dri2_dpy = disp->DriverData;
404
405 if (dri2_dpy->dri2) {
406 dri2_dpy->dri_screen =
407 dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
408 &dri2_dpy->driver_configs, disp);
409 } else {
410 assert(dri2_dpy->swrast);
411 dri2_dpy->dri_screen =
412 dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
413 &dri2_dpy->driver_configs, disp);
414 }
415
416 if (dri2_dpy->dri_screen == NULL) {
417 _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
418 return EGL_FALSE;
419 }
420
421 extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
422
423 if (dri2_dpy->dri2) {
424 if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
425 goto cleanup_dri_screen;
426 } else {
427 assert(dri2_dpy->swrast);
428 if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
429 goto cleanup_dri_screen;
430 }
431
432 if (dri2_dpy->dri2) {
433 if (dri2_dpy->dri2->base.version >= 2)
434 api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
435 else
436 api_mask = 1 << __DRI_API_OPENGL;
437 } else {
438 assert(dri2_dpy->swrast);
439 if (dri2_dpy->swrast->base.version >= 2)
440 api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
441 else
442 api_mask = 1 << __DRI_API_OPENGL;
443 }
444
445 disp->ClientAPIs = 0;
446 if (api_mask & (1 <<__DRI_API_OPENGL))
447 disp->ClientAPIs |= EGL_OPENGL_BIT;
448 if (api_mask & (1 <<__DRI_API_GLES))
449 disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
450 if (api_mask & (1 << __DRI_API_GLES2))
451 disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
452
453 if (dri2_dpy->dri2) {
454 if (dri2_dpy->dri2->base.version >= 2) {
455 disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
456 disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
457 disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
458 }
459 } else {
460 assert(dri2_dpy->swrast);
461 if (dri2_dpy->swrast->base.version >= 2) {
462 disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
463 disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
464 disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
465 }
466 }
467
468 if (dri2_dpy->image) {
469 disp->Extensions.MESA_drm_image = EGL_TRUE;
470 disp->Extensions.KHR_image_base = EGL_TRUE;
471 disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
472 }
473
474 return EGL_TRUE;
475
476 cleanup_dri_screen:
477 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
478
479 return EGL_FALSE;
480 }
481
482 /**
483 * Called via eglInitialize(), GLX_drv->API.Initialize().
484 */
485 static EGLBoolean
486 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
487 {
488 /* not until swrast_dri is supported */
489 if (disp->Options.UseFallback)
490 return EGL_FALSE;
491
492 switch (disp->Platform) {
493 #ifdef HAVE_X11_PLATFORM
494 case _EGL_PLATFORM_X11:
495 if (disp->Options.TestOnly)
496 return EGL_TRUE;
497 return dri2_initialize_x11(drv, disp);
498 #endif
499
500 #ifdef HAVE_LIBUDEV
501 case _EGL_PLATFORM_DRM:
502 if (disp->Options.TestOnly)
503 return EGL_TRUE;
504 return dri2_initialize_drm(drv, disp);
505 #ifdef HAVE_WAYLAND_PLATFORM
506 case _EGL_PLATFORM_WAYLAND:
507 if (disp->Options.TestOnly)
508 return EGL_TRUE;
509 return dri2_initialize_wayland(drv, disp);
510 #endif
511 #endif
512
513 default:
514 return EGL_FALSE;
515 }
516 }
517
518 /**
519 * Called via eglTerminate(), drv->API.Terminate().
520 */
521 static EGLBoolean
522 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
523 {
524 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
525
526 _eglReleaseDisplayResources(drv, disp);
527 _eglCleanupDisplay(disp);
528
529 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
530 if (dri2_dpy->fd)
531 close(dri2_dpy->fd);
532 dlclose(dri2_dpy->driver);
533 #ifdef HAVE_X11_PLATFORM
534 if (disp->PlatformDisplay == NULL)
535 xcb_disconnect(dri2_dpy->conn);
536 #endif
537 free(dri2_dpy);
538 disp->DriverData = NULL;
539
540 return EGL_TRUE;
541 }
542
543
544 /**
545 * Called via eglCreateContext(), drv->API.CreateContext().
546 */
547 static _EGLContext *
548 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
549 _EGLContext *share_list, const EGLint *attrib_list)
550 {
551 struct dri2_egl_context *dri2_ctx;
552 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
553 struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
554 struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
555 const __DRIconfig *dri_config;
556 int api;
557
558 (void) drv;
559
560 dri2_ctx = malloc(sizeof *dri2_ctx);
561 if (!dri2_ctx) {
562 _eglError(EGL_BAD_ALLOC, "eglCreateContext");
563 return NULL;
564 }
565
566 if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
567 goto cleanup;
568
569 switch (dri2_ctx->base.ClientAPI) {
570 case EGL_OPENGL_ES_API:
571 switch (dri2_ctx->base.ClientVersion) {
572 case 1:
573 api = __DRI_API_GLES;
574 break;
575 case 2:
576 api = __DRI_API_GLES2;
577 break;
578 default:
579 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
580 return NULL;
581 }
582 break;
583 case EGL_OPENGL_API:
584 api = __DRI_API_OPENGL;
585 break;
586 default:
587 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
588 return NULL;
589 }
590
591 if (conf != NULL) {
592 /* The config chosen here isn't necessarily
593 * used for surfaces later.
594 * A pixmap surface will use the single config.
595 * This opportunity depends on disabling the
596 * doubleBufferMode check in
597 * src/mesa/main/context.c:check_compatible()
598 */
599 if (dri2_config->dri_double_config)
600 dri_config = dri2_config->dri_double_config;
601 else
602 dri_config = dri2_config->dri_single_config;
603 }
604 else
605 dri_config = NULL;
606
607 if (dri2_dpy->dri2) {
608 if (dri2_dpy->dri2->base.version >= 2) {
609 dri2_ctx->dri_context =
610 dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
611 api,
612 dri_config,
613 dri2_ctx_shared ?
614 dri2_ctx_shared->dri_context : NULL,
615 dri2_ctx);
616 } else if (api == __DRI_API_OPENGL) {
617 dri2_ctx->dri_context =
618 dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
619 dri_config,
620 dri2_ctx_shared ?
621 dri2_ctx_shared->dri_context : NULL,
622 dri2_ctx);
623 } else {
624 /* fail */
625 }
626 } else {
627 assert(dri2_dpy->swrast);
628 if (dri2_dpy->swrast->base.version >= 2) {
629 dri2_ctx->dri_context =
630 dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
631 api,
632 dri_config,
633 dri2_ctx_shared ?
634 dri2_ctx_shared->dri_context : NULL,
635 dri2_ctx);
636 } else if (api == __DRI_API_OPENGL) {
637 dri2_ctx->dri_context =
638 dri2_dpy->core->createNewContext(dri2_dpy->dri_screen,
639 dri_config,
640 dri2_ctx_shared ?
641 dri2_ctx_shared->dri_context : NULL,
642 dri2_ctx);
643 } else {
644 /* fail */
645 }
646 }
647
648 if (!dri2_ctx->dri_context)
649 goto cleanup;
650
651 return &dri2_ctx->base;
652
653 cleanup:
654 free(dri2_ctx);
655 return NULL;
656 }
657
658 /**
659 * Called via eglMakeCurrent(), drv->API.MakeCurrent().
660 */
661 static EGLBoolean
662 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
663 _EGLSurface *rsurf, _EGLContext *ctx)
664 {
665 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
666 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
667 struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
668 struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
669 struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
670 _EGLContext *old_ctx;
671 _EGLSurface *old_dsurf, *old_rsurf;
672 __DRIdrawable *ddraw, *rdraw;
673 __DRIcontext *cctx;
674
675 /* make new bindings */
676 if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
677 return EGL_FALSE;
678
679 /* flush before context switch */
680 if (old_ctx && dri2_drv->glFlush)
681 dri2_drv->glFlush();
682
683 ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
684 rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
685 cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
686
687 if (old_ctx) {
688 __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
689 dri2_dpy->core->unbindContext(old_cctx);
690 }
691
692 if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
693 dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
694 if (old_dsurf)
695 drv->API.DestroySurface(drv, disp, old_dsurf);
696 if (old_rsurf)
697 drv->API.DestroySurface(drv, disp, old_rsurf);
698 /* no destroy? */
699 if (old_ctx)
700 _eglPutContext(old_ctx);
701
702 return EGL_TRUE;
703 } else {
704 /* undo the previous _eglBindContext */
705 _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
706 assert(&dri2_ctx->base == ctx &&
707 &dri2_dsurf->base == dsurf &&
708 &dri2_rsurf->base == rsurf);
709
710 _eglPutSurface(dsurf);
711 _eglPutSurface(rsurf);
712 _eglPutContext(ctx);
713
714 _eglPutSurface(old_dsurf);
715 _eglPutSurface(old_rsurf);
716 _eglPutContext(old_ctx);
717
718 return EGL_FALSE;
719 }
720 }
721
722 /*
723 * Called from eglGetProcAddress() via drv->API.GetProcAddress().
724 */
725 static _EGLProc
726 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
727 {
728 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
729
730 return dri2_drv->get_proc_address(procname);
731 }
732
733 static EGLBoolean
734 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
735 {
736 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
737 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
738
739 (void) drv;
740
741 /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
742 * we need to copy fake to real here.*/
743
744 (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
745
746 return EGL_TRUE;
747 }
748
749 static EGLBoolean
750 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
751 {
752 (void) drv;
753 (void) disp;
754
755 if (engine != EGL_CORE_NATIVE_ENGINE)
756 return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
757 /* glXWaitX(); */
758
759 return EGL_TRUE;
760 }
761
762 static EGLBoolean
763 dri2_bind_tex_image(_EGLDriver *drv,
764 _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
765 {
766 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
767 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
768 struct dri2_egl_context *dri2_ctx;
769 _EGLContext *ctx;
770 GLint format, target;
771
772 ctx = _eglGetCurrentContext();
773 dri2_ctx = dri2_egl_context(ctx);
774
775 if (!_eglBindTexImage(drv, disp, surf, buffer))
776 return EGL_FALSE;
777
778 switch (dri2_surf->base.TextureFormat) {
779 case EGL_TEXTURE_RGB:
780 format = __DRI_TEXTURE_FORMAT_RGB;
781 break;
782 case EGL_TEXTURE_RGBA:
783 format = __DRI_TEXTURE_FORMAT_RGBA;
784 break;
785 default:
786 assert(0);
787 }
788
789 switch (dri2_surf->base.TextureTarget) {
790 case EGL_TEXTURE_2D:
791 target = GL_TEXTURE_2D;
792 break;
793 default:
794 assert(0);
795 }
796
797 (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
798 target, format,
799 dri2_surf->dri_drawable);
800
801 return EGL_TRUE;
802 }
803
804 static EGLBoolean
805 dri2_release_tex_image(_EGLDriver *drv,
806 _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
807 {
808 #if __DRI_TEX_BUFFER_VERSION >= 3
809 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
810 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
811 struct dri2_egl_context *dri2_ctx;
812 _EGLContext *ctx;
813 GLint target;
814
815 ctx = _eglGetCurrentContext();
816 dri2_ctx = dri2_egl_context(ctx);
817
818 if (!_eglReleaseTexImage(drv, disp, surf, buffer))
819 return EGL_FALSE;
820
821 switch (dri2_surf->base.TextureTarget) {
822 case EGL_TEXTURE_2D:
823 target = GL_TEXTURE_2D;
824 break;
825 default:
826 assert(0);
827 }
828 if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
829 (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
830 target,
831 dri2_surf->dri_drawable);
832 #endif
833
834 return EGL_TRUE;
835 }
836
837 static _EGLImage *
838 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
839 EGLClientBuffer buffer,
840 const EGLint *attr_list)
841 {
842 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
843 struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
844 struct dri2_egl_image *dri2_img;
845 GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
846
847 if (renderbuffer == 0) {
848 _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
849 return EGL_NO_IMAGE_KHR;
850 }
851
852 dri2_img = malloc(sizeof *dri2_img);
853 if (!dri2_img) {
854 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
855 return EGL_NO_IMAGE_KHR;
856 }
857
858 if (!_eglInitImage(&dri2_img->base, disp))
859 return EGL_NO_IMAGE_KHR;
860
861 dri2_img->dri_image =
862 dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
863 renderbuffer,
864 dri2_img);
865
866 return &dri2_img->base;
867 }
868
869 static _EGLImage *
870 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
871 EGLClientBuffer buffer, const EGLint *attr_list)
872 {
873 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
874 struct dri2_egl_image *dri2_img;
875 EGLint format, name, pitch, err;
876 _EGLImageAttribs attrs;
877
878 (void) ctx;
879
880 name = (EGLint) (uintptr_t) buffer;
881
882 err = _eglParseImageAttribList(&attrs, disp, attr_list);
883 if (err != EGL_SUCCESS)
884 return NULL;
885
886 if (attrs.Width <= 0 || attrs.Height <= 0 ||
887 attrs.DRMBufferStrideMESA <= 0) {
888 _eglError(EGL_BAD_PARAMETER,
889 "bad width, height or stride");
890 return NULL;
891 }
892
893 switch (attrs.DRMBufferFormatMESA) {
894 case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
895 format = __DRI_IMAGE_FORMAT_ARGB8888;
896 pitch = attrs.DRMBufferStrideMESA;
897 break;
898 default:
899 _eglError(EGL_BAD_PARAMETER,
900 "dri2_create_image_khr: unsupported pixmap depth");
901 return NULL;
902 }
903
904 dri2_img = malloc(sizeof *dri2_img);
905 if (!dri2_img) {
906 _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
907 return NULL;
908 }
909
910 if (!_eglInitImage(&dri2_img->base, disp)) {
911 free(dri2_img);
912 return NULL;
913 }
914
915 dri2_img->dri_image =
916 dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
917 attrs.Width,
918 attrs.Height,
919 format,
920 name,
921 pitch,
922 dri2_img);
923 if (dri2_img->dri_image == NULL) {
924 free(dri2_img);
925 _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
926 return NULL;
927 }
928
929 return &dri2_img->base;
930 }
931
932 #ifdef HAVE_WAYLAND_PLATFORM
933 static _EGLImage *
934 dri2_reference_drm_image(_EGLDisplay *disp, _EGLContext *ctx,
935 __DRIimage *dri_image, EGLint width, EGLint height)
936 {
937 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
938 EGLint attr_list[] = {
939 EGL_WIDTH, 0,
940 EGL_HEIGHT, 0,
941 EGL_DRM_BUFFER_STRIDE_MESA, 0,
942 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
943 EGL_NONE
944 };
945 EGLint name, stride;
946
947 dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_NAME, &name);
948 dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
949
950 attr_list[1] = width;
951 attr_list[3] = height;
952 attr_list[5] = stride / 4;
953
954 return dri2_create_image_mesa_drm_buffer(disp, ctx,
955 (EGLClientBuffer)(intptr_t) name,
956 attr_list);
957 }
958
959 static _EGLImage *
960 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
961 EGLClientBuffer _buffer,
962 const EGLint *attr_list)
963 {
964 struct wl_buffer *buffer = (struct wl_buffer *) _buffer;
965 (void) attr_list;
966
967 if (!wayland_buffer_is_drm(buffer))
968 return NULL;
969
970 return dri2_reference_drm_image(disp, ctx,
971 wayland_drm_buffer_get_buffer(buffer),
972 buffer->width,
973 buffer->height);
974 }
975 #endif
976
977 _EGLImage *
978 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
979 _EGLContext *ctx, EGLenum target,
980 EGLClientBuffer buffer, const EGLint *attr_list)
981 {
982 (void) drv;
983
984 switch (target) {
985 case EGL_GL_RENDERBUFFER_KHR:
986 return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
987 case EGL_DRM_BUFFER_MESA:
988 return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
989 #ifdef HAVE_WAYLAND_PLATFORM
990 case EGL_WAYLAND_BUFFER_WL:
991 return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
992 #endif
993 default:
994 _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
995 return EGL_NO_IMAGE_KHR;
996 }
997 }
998
999 static EGLBoolean
1000 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
1001 {
1002 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1003 struct dri2_egl_image *dri2_img = dri2_egl_image(image);
1004
1005 (void) drv;
1006
1007 dri2_dpy->image->destroyImage(dri2_img->dri_image);
1008 free(dri2_img);
1009
1010 return EGL_TRUE;
1011 }
1012
1013 static _EGLImage *
1014 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1015 const EGLint *attr_list)
1016 {
1017 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1018 struct dri2_egl_image *dri2_img;
1019 _EGLImageAttribs attrs;
1020 unsigned int dri_use, valid_mask;
1021 int format;
1022 EGLint err = EGL_SUCCESS;
1023
1024 (void) drv;
1025
1026 dri2_img = malloc(sizeof *dri2_img);
1027 if (!dri2_img) {
1028 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1029 return EGL_NO_IMAGE_KHR;
1030 }
1031
1032 if (!attr_list) {
1033 err = EGL_BAD_PARAMETER;
1034 goto cleanup_img;
1035 }
1036
1037 if (!_eglInitImage(&dri2_img->base, disp)) {
1038 err = EGL_BAD_PARAMETER;
1039 goto cleanup_img;
1040 }
1041
1042 err = _eglParseImageAttribList(&attrs, disp, attr_list);
1043 if (err != EGL_SUCCESS)
1044 goto cleanup_img;
1045
1046 if (attrs.Width <= 0 || attrs.Height <= 0) {
1047 _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1048 attrs.Width, attrs.Height);
1049 goto cleanup_img;
1050 }
1051
1052 switch (attrs.DRMBufferFormatMESA) {
1053 case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1054 format = __DRI_IMAGE_FORMAT_ARGB8888;
1055 break;
1056 default:
1057 _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1058 attrs.DRMBufferFormatMESA);
1059 goto cleanup_img;
1060 }
1061
1062 valid_mask =
1063 EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1064 EGL_DRM_BUFFER_USE_SHARE_MESA |
1065 EGL_DRM_BUFFER_USE_CURSOR_MESA;
1066 if (attrs.DRMBufferUseMESA & ~valid_mask) {
1067 _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1068 attrs.DRMBufferUseMESA & ~valid_mask);
1069 goto cleanup_img;
1070 }
1071
1072 dri_use = 0;
1073 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1074 dri_use |= __DRI_IMAGE_USE_SHARE;
1075 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1076 dri_use |= __DRI_IMAGE_USE_SCANOUT;
1077 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1078 dri_use |= __DRI_IMAGE_USE_CURSOR;
1079
1080 dri2_img->dri_image =
1081 dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1082 attrs.Width, attrs.Height,
1083 format, dri_use, dri2_img);
1084 if (dri2_img->dri_image == NULL) {
1085 err = EGL_BAD_ALLOC;
1086 goto cleanup_img;
1087 }
1088
1089 return &dri2_img->base;
1090
1091 cleanup_img:
1092 free(dri2_img);
1093 _eglError(err, "dri2_create_drm_image_mesa");
1094
1095 return EGL_NO_IMAGE_KHR;
1096 }
1097
1098 static EGLBoolean
1099 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1100 EGLint *name, EGLint *handle, EGLint *stride)
1101 {
1102 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1103 struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1104
1105 (void) drv;
1106
1107 if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1108 __DRI_IMAGE_ATTRIB_NAME, name)) {
1109 _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1110 return EGL_FALSE;
1111 }
1112
1113 if (handle)
1114 dri2_dpy->image->queryImage(dri2_img->dri_image,
1115 __DRI_IMAGE_ATTRIB_HANDLE, handle);
1116
1117 if (stride)
1118 dri2_dpy->image->queryImage(dri2_img->dri_image,
1119 __DRI_IMAGE_ATTRIB_STRIDE, stride);
1120
1121 return EGL_TRUE;
1122 }
1123
1124 #ifdef HAVE_WAYLAND_PLATFORM
1125
1126 static void *
1127 dri2_wl_reference_buffer(void *user_data, uint32_t name,
1128 int32_t width, int32_t height,
1129 uint32_t stride, struct wl_visual *visual)
1130 {
1131 _EGLDisplay *disp = user_data;
1132 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1133 __DRIimage *image;
1134
1135 image = dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1136 width, height,
1137 __DRI_IMAGE_FORMAT_ARGB8888,
1138 name, stride / 4,
1139 NULL);
1140
1141 return image;
1142 }
1143
1144 static void
1145 dri2_wl_release_buffer(void *user_data, void *buffer)
1146 {
1147 _EGLDisplay *disp = user_data;
1148 __DRIimage *image = buffer;
1149 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1150
1151 dri2_dpy->image->destroyImage(image);
1152 }
1153
1154 static struct wayland_drm_callbacks wl_drm_callbacks = {
1155 .authenticate = NULL,
1156 .reference_buffer = dri2_wl_reference_buffer,
1157 .release_buffer = dri2_wl_release_buffer
1158 };
1159
1160 static EGLBoolean
1161 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1162 struct wl_display *wl_dpy)
1163 {
1164 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1165
1166 (void) drv;
1167
1168 if (dri2_dpy->wl_server_drm)
1169 return EGL_FALSE;
1170
1171 wl_drm_callbacks.authenticate =
1172 (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1173
1174 dri2_dpy->wl_server_drm =
1175 wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1176 &wl_drm_callbacks, disp);
1177
1178 if (!dri2_dpy->wl_server_drm)
1179 return EGL_FALSE;
1180
1181 return EGL_TRUE;
1182 }
1183
1184 static EGLBoolean
1185 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1186 struct wl_display *wl_dpy)
1187 {
1188 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1189
1190 (void) drv;
1191
1192 if (!dri2_dpy->wl_server_drm)
1193 return EGL_FALSE;
1194
1195 wayland_drm_uninit(dri2_dpy->wl_server_drm);
1196 dri2_dpy->wl_server_drm = NULL;
1197
1198 return EGL_TRUE;
1199 }
1200 #endif
1201
1202 static void
1203 dri2_unload(_EGLDriver *drv)
1204 {
1205 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1206
1207 if (dri2_drv->handle)
1208 dlclose(dri2_drv->handle);
1209 free(dri2_drv);
1210 }
1211
1212 static EGLBoolean
1213 dri2_load(_EGLDriver *drv)
1214 {
1215 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1216 #ifdef HAVE_SHARED_GLAPI
1217 const char *libname = "libglapi.so.0";
1218 #else
1219 /*
1220 * Both libGL.so and libglapi.so are glapi providers. There is no way to
1221 * tell which one to load.
1222 */
1223 const char *libname = NULL;
1224 #endif
1225 void *handle;
1226
1227 /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1228 handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1229 if (handle) {
1230 dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1231 dlsym(handle, "_glapi_get_proc_address");
1232 if (!dri2_drv->get_proc_address || !libname) {
1233 /* no need to keep a reference */
1234 dlclose(handle);
1235 handle = NULL;
1236 }
1237 }
1238
1239 /* if glapi is not available, loading DRI drivers will fail */
1240 if (!dri2_drv->get_proc_address) {
1241 _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1242 return EGL_FALSE;
1243 }
1244
1245 dri2_drv->glFlush = (void (*)(void))
1246 dri2_drv->get_proc_address("glFlush");
1247
1248 dri2_drv->handle = handle;
1249
1250 return EGL_TRUE;
1251 }
1252
1253 /**
1254 * This is the main entrypoint into the driver, called by libEGL.
1255 * Create a new _EGLDriver object and init its dispatch table.
1256 */
1257 _EGLDriver *
1258 _EGL_MAIN(const char *args)
1259 {
1260 struct dri2_egl_driver *dri2_drv;
1261
1262 (void) args;
1263
1264 dri2_drv = malloc(sizeof *dri2_drv);
1265 if (!dri2_drv)
1266 return NULL;
1267
1268 memset(dri2_drv, 0, sizeof *dri2_drv);
1269
1270 if (!dri2_load(&dri2_drv->base))
1271 return NULL;
1272
1273 _eglInitDriverFallbacks(&dri2_drv->base);
1274 dri2_drv->base.API.Initialize = dri2_initialize;
1275 dri2_drv->base.API.Terminate = dri2_terminate;
1276 dri2_drv->base.API.CreateContext = dri2_create_context;
1277 dri2_drv->base.API.MakeCurrent = dri2_make_current;
1278 dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1279 dri2_drv->base.API.WaitClient = dri2_wait_client;
1280 dri2_drv->base.API.WaitNative = dri2_wait_native;
1281 dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1282 dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1283 dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1284 dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1285 dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1286 dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1287 #ifdef HAVE_WAYLAND_PLATFORM
1288 dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1289 dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1290 #endif
1291
1292 dri2_drv->base.Name = "DRI2";
1293 dri2_drv->base.Unload = dri2_unload;
1294
1295 return &dri2_drv->base;
1296 }