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1acec51a43370d81653b06a11981abc9c1c281d1
[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
209 if (num_configs == 0) {
210 conf = malloc(sizeof *conf);
211 if (conf == NULL)
212 return NULL;
213
214 memcpy(&conf->base, &base, sizeof base);
215 if (double_buffer) {
216 conf->dri_double_config = dri_config;
217 conf->dri_single_config = NULL;
218 } else {
219 conf->dri_single_config = dri_config;
220 conf->dri_double_config = NULL;
221 }
222 conf->base.SurfaceType = 0;
223 conf->base.ConfigID = config_id;
224
225 _eglLinkConfig(&conf->base);
226 }
227
228 conf->base.SurfaceType |= surface_type & (!double_buffer ? EGL_PIXMAP_BIT:
229 (EGL_WINDOW_BIT | EGL_PBUFFER_BIT | EGL_SWAP_BEHAVIOR_PRESERVED_BIT));
230
231 return conf;
232 }
233
234 static __DRIimage *
235 dri2_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
236 {
237 _EGLDisplay *disp = data;
238 struct dri2_egl_image *dri2_img;
239 _EGLImage *img;
240
241 (void) screen;
242
243 img = _eglLookupImage(image, disp);
244 if (img == NULL) {
245 _eglError(EGL_BAD_PARAMETER, "dri2_lookup_egl_image");
246 return NULL;
247 }
248
249 dri2_img = dri2_egl_image(image);
250
251 return dri2_img->dri_image;
252 }
253
254 const __DRIimageLookupExtension image_lookup_extension = {
255 { __DRI_IMAGE_LOOKUP, 1 },
256 dri2_lookup_egl_image
257 };
258
259 static const char dri_driver_path[] = DEFAULT_DRIVER_DIR;
260
261 struct dri2_extension_match {
262 const char *name;
263 int version;
264 int offset;
265 };
266
267 static struct dri2_extension_match dri2_driver_extensions[] = {
268 { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
269 { __DRI_DRI2, 1, offsetof(struct dri2_egl_display, dri2) },
270 { NULL, 0, 0 }
271 };
272
273 static struct dri2_extension_match dri2_core_extensions[] = {
274 { __DRI2_FLUSH, 1, offsetof(struct dri2_egl_display, flush) },
275 { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
276 { __DRI_IMAGE, 1, offsetof(struct dri2_egl_display, image) },
277 { NULL, 0, 0 }
278 };
279
280 static struct dri2_extension_match swrast_driver_extensions[] = {
281 { __DRI_CORE, 1, offsetof(struct dri2_egl_display, core) },
282 { __DRI_SWRAST, 2, offsetof(struct dri2_egl_display, swrast) },
283 { NULL }
284 };
285
286 static struct dri2_extension_match swrast_core_extensions[] = {
287 { __DRI_TEX_BUFFER, 2, offsetof(struct dri2_egl_display, tex_buffer) },
288 { NULL }
289 };
290
291 static EGLBoolean
292 dri2_bind_extensions(struct dri2_egl_display *dri2_dpy,
293 struct dri2_extension_match *matches,
294 const __DRIextension **extensions)
295 {
296 int i, j, ret = EGL_TRUE;
297 void *field;
298
299 for (i = 0; extensions[i]; i++) {
300 _eglLog(_EGL_DEBUG, "DRI2: found extension `%s'", extensions[i]->name);
301 for (j = 0; matches[j].name; j++) {
302 if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
303 extensions[i]->version >= matches[j].version) {
304 field = ((char *) dri2_dpy + matches[j].offset);
305 *(const __DRIextension **) field = extensions[i];
306 _eglLog(_EGL_INFO, "DRI2: found extension %s version %d",
307 extensions[i]->name, extensions[i]->version);
308 }
309 }
310 }
311
312 for (j = 0; matches[j].name; j++) {
313 field = ((char *) dri2_dpy + matches[j].offset);
314 if (*(const __DRIextension **) field == NULL) {
315 _eglLog(_EGL_FATAL, "DRI2: did not find extension %s version %d",
316 matches[j].name, matches[j].version);
317 ret = EGL_FALSE;
318 }
319 }
320
321 return ret;
322 }
323
324 EGLBoolean
325 dri2_load_driver(_EGLDisplay *disp)
326 {
327 struct dri2_egl_display *dri2_dpy = disp->DriverData;
328 const __DRIextension **extensions;
329 char path[PATH_MAX], *search_paths, *p, *next, *end;
330
331 search_paths = NULL;
332 if (geteuid() == getuid()) {
333 /* don't allow setuid apps to use LIBGL_DRIVERS_PATH */
334 search_paths = getenv("LIBGL_DRIVERS_PATH");
335 }
336 if (search_paths == NULL)
337 search_paths = DEFAULT_DRIVER_DIR;
338
339 dri2_dpy->driver = NULL;
340 end = search_paths + strlen(search_paths);
341 for (p = search_paths; p < end && dri2_dpy->driver == NULL; p = next + 1) {
342 int len;
343 next = strchr(p, ':');
344 if (next == NULL)
345 next = end;
346
347 len = next - p;
348 #if GLX_USE_TLS
349 snprintf(path, sizeof path,
350 "%.*s/tls/%s_dri.so", len, p, dri2_dpy->driver_name);
351 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
352 #endif
353 if (dri2_dpy->driver == NULL) {
354 snprintf(path, sizeof path,
355 "%.*s/%s_dri.so", len, p, dri2_dpy->driver_name);
356 dri2_dpy->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
357 if (dri2_dpy->driver == NULL)
358 _eglLog(_EGL_DEBUG, "failed to open %s: %s\n", path, dlerror());
359 }
360 }
361
362 if (dri2_dpy->driver == NULL) {
363 _eglLog(_EGL_WARNING,
364 "DRI2: failed to open any driver (search paths %s)",
365 search_paths);
366 return EGL_FALSE;
367 }
368
369 _eglLog(_EGL_DEBUG, "DRI2: dlopen(%s)", path);
370 extensions = dlsym(dri2_dpy->driver, __DRI_DRIVER_EXTENSIONS);
371 if (extensions == NULL) {
372 _eglLog(_EGL_WARNING,
373 "DRI2: driver exports no extensions (%s)", dlerror());
374 dlclose(dri2_dpy->driver);
375 return EGL_FALSE;
376 }
377
378 if (strcmp(dri2_dpy->driver_name, "swrast") == 0) {
379 if (!dri2_bind_extensions(dri2_dpy, swrast_driver_extensions, extensions)) {
380 dlclose(dri2_dpy->driver);
381 return EGL_FALSE;
382 }
383 } else {
384 if (!dri2_bind_extensions(dri2_dpy, dri2_driver_extensions, extensions)) {
385 dlclose(dri2_dpy->driver);
386 return EGL_FALSE;
387 }
388 }
389
390 return EGL_TRUE;
391 }
392
393 EGLBoolean
394 dri2_create_screen(_EGLDisplay *disp)
395 {
396 const __DRIextension **extensions;
397 struct dri2_egl_display *dri2_dpy;
398 unsigned int api_mask;
399
400 dri2_dpy = disp->DriverData;
401
402 if (dri2_dpy->dri2) {
403 dri2_dpy->dri_screen =
404 dri2_dpy->dri2->createNewScreen(0, dri2_dpy->fd, dri2_dpy->extensions,
405 &dri2_dpy->driver_configs, disp);
406 } else {
407 assert(dri2_dpy->swrast);
408 dri2_dpy->dri_screen =
409 dri2_dpy->swrast->createNewScreen(0, dri2_dpy->extensions,
410 &dri2_dpy->driver_configs, disp);
411 }
412
413 if (dri2_dpy->dri_screen == NULL) {
414 _eglLog(_EGL_WARNING, "DRI2: failed to create dri screen");
415 return EGL_FALSE;
416 }
417
418 extensions = dri2_dpy->core->getExtensions(dri2_dpy->dri_screen);
419
420 if (dri2_dpy->dri2) {
421 if (!dri2_bind_extensions(dri2_dpy, dri2_core_extensions, extensions))
422 goto cleanup_dri_screen;
423 } else {
424 assert(dri2_dpy->swrast);
425 if (!dri2_bind_extensions(dri2_dpy, swrast_core_extensions, extensions))
426 goto cleanup_dri_screen;
427 }
428
429 if (dri2_dpy->dri2) {
430 if (dri2_dpy->dri2->base.version >= 2)
431 api_mask = dri2_dpy->dri2->getAPIMask(dri2_dpy->dri_screen);
432 else
433 api_mask = 1 << __DRI_API_OPENGL;
434 } else {
435 assert(dri2_dpy->swrast);
436 if (dri2_dpy->swrast->base.version >= 2)
437 api_mask = 1 << __DRI_API_OPENGL | 1 << __DRI_API_GLES | 1 << __DRI_API_GLES2;
438 else
439 api_mask = 1 << __DRI_API_OPENGL;
440 }
441
442 disp->ClientAPIs = 0;
443 if (api_mask & (1 <<__DRI_API_OPENGL))
444 disp->ClientAPIs |= EGL_OPENGL_BIT;
445 if (api_mask & (1 <<__DRI_API_GLES))
446 disp->ClientAPIs |= EGL_OPENGL_ES_BIT;
447 if (api_mask & (1 << __DRI_API_GLES2))
448 disp->ClientAPIs |= EGL_OPENGL_ES2_BIT;
449
450 if (dri2_dpy->dri2) {
451 if (dri2_dpy->dri2->base.version >= 2) {
452 disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
453 disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
454 disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
455 }
456 } else {
457 assert(dri2_dpy->swrast);
458 if (dri2_dpy->swrast->base.version >= 2) {
459 disp->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
460 disp->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
461 disp->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
462 }
463 }
464
465 if (dri2_dpy->image) {
466 disp->Extensions.MESA_drm_image = EGL_TRUE;
467 disp->Extensions.KHR_image_base = EGL_TRUE;
468 disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
469 }
470
471 return EGL_TRUE;
472
473 cleanup_dri_screen:
474 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
475
476 return EGL_FALSE;
477 }
478
479 /**
480 * Called via eglInitialize(), GLX_drv->API.Initialize().
481 */
482 static EGLBoolean
483 dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp)
484 {
485 /* not until swrast_dri is supported */
486 if (disp->Options.UseFallback)
487 return EGL_FALSE;
488
489 switch (disp->Platform) {
490 case _EGL_PLATFORM_X11:
491 if (disp->Options.TestOnly)
492 return EGL_TRUE;
493 return dri2_initialize_x11(drv, disp);
494
495 #ifdef HAVE_LIBUDEV
496 case _EGL_PLATFORM_DRM:
497 if (disp->Options.TestOnly)
498 return EGL_TRUE;
499 return dri2_initialize_drm(drv, disp);
500 #ifdef HAVE_WAYLAND_PLATFORM
501 case _EGL_PLATFORM_WAYLAND:
502 if (disp->Options.TestOnly)
503 return EGL_TRUE;
504 return dri2_initialize_wayland(drv, disp);
505 #endif
506 #endif
507
508 default:
509 return EGL_FALSE;
510 }
511 }
512
513 /**
514 * Called via eglTerminate(), drv->API.Terminate().
515 */
516 static EGLBoolean
517 dri2_terminate(_EGLDriver *drv, _EGLDisplay *disp)
518 {
519 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
520
521 _eglReleaseDisplayResources(drv, disp);
522 _eglCleanupDisplay(disp);
523
524 dri2_dpy->core->destroyScreen(dri2_dpy->dri_screen);
525 if (dri2_dpy->fd)
526 close(dri2_dpy->fd);
527 dlclose(dri2_dpy->driver);
528 if (disp->PlatformDisplay == NULL)
529 xcb_disconnect(dri2_dpy->conn);
530 free(dri2_dpy);
531 disp->DriverData = NULL;
532
533 return EGL_TRUE;
534 }
535
536
537 /**
538 * Called via eglCreateContext(), drv->API.CreateContext().
539 */
540 static _EGLContext *
541 dri2_create_context(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf,
542 _EGLContext *share_list, const EGLint *attrib_list)
543 {
544 struct dri2_egl_context *dri2_ctx;
545 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
546 struct dri2_egl_context *dri2_ctx_shared = dri2_egl_context(share_list);
547 struct dri2_egl_config *dri2_config = dri2_egl_config(conf);
548 const __DRIconfig *dri_config;
549 int api;
550
551 (void) drv;
552
553 dri2_ctx = malloc(sizeof *dri2_ctx);
554 if (!dri2_ctx) {
555 _eglError(EGL_BAD_ALLOC, "eglCreateContext");
556 return NULL;
557 }
558
559 if (!_eglInitContext(&dri2_ctx->base, disp, conf, attrib_list))
560 goto cleanup;
561
562 switch (dri2_ctx->base.ClientAPI) {
563 case EGL_OPENGL_ES_API:
564 switch (dri2_ctx->base.ClientVersion) {
565 case 1:
566 api = __DRI_API_GLES;
567 break;
568 case 2:
569 api = __DRI_API_GLES2;
570 break;
571 default:
572 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
573 return NULL;
574 }
575 break;
576 case EGL_OPENGL_API:
577 api = __DRI_API_OPENGL;
578 break;
579 default:
580 _eglError(EGL_BAD_PARAMETER, "eglCreateContext");
581 return NULL;
582 }
583
584 if (conf != NULL) {
585 /* The config chosen here isn't necessarily
586 * used for surfaces later.
587 * A pixmap surface will use the single config.
588 * This opportunity depends on disabling the
589 * doubleBufferMode check in
590 * src/mesa/main/context.c:check_compatible()
591 */
592 if (dri2_config->dri_double_config)
593 dri_config = dri2_config->dri_double_config;
594 else
595 dri_config = dri2_config->dri_single_config;
596 }
597 else
598 dri_config = NULL;
599
600 if (dri2_dpy->dri2) {
601 if (dri2_dpy->dri2->base.version >= 2) {
602 dri2_ctx->dri_context =
603 dri2_dpy->dri2->createNewContextForAPI(dri2_dpy->dri_screen,
604 api,
605 dri_config,
606 dri2_ctx_shared ?
607 dri2_ctx_shared->dri_context : NULL,
608 dri2_ctx);
609 } else if (api == __DRI_API_OPENGL) {
610 dri2_ctx->dri_context =
611 dri2_dpy->dri2->createNewContext(dri2_dpy->dri_screen,
612 dri_config,
613 dri2_ctx_shared ?
614 dri2_ctx_shared->dri_context : NULL,
615 dri2_ctx);
616 } else {
617 /* fail */
618 }
619 } else {
620 assert(dri2_dpy->swrast);
621 if (dri2_dpy->swrast->base.version >= 2) {
622 dri2_ctx->dri_context =
623 dri2_dpy->swrast->createNewContextForAPI(dri2_dpy->dri_screen,
624 api,
625 dri_config,
626 dri2_ctx_shared ?
627 dri2_ctx_shared->dri_context : NULL,
628 dri2_ctx);
629 } else if (api == __DRI_API_OPENGL) {
630 dri2_ctx->dri_context =
631 dri2_dpy->core->createNewContext(dri2_dpy->dri_screen,
632 dri_config,
633 dri2_ctx_shared ?
634 dri2_ctx_shared->dri_context : NULL,
635 dri2_ctx);
636 } else {
637 /* fail */
638 }
639 }
640
641 if (!dri2_ctx->dri_context)
642 goto cleanup;
643
644 return &dri2_ctx->base;
645
646 cleanup:
647 free(dri2_ctx);
648 return NULL;
649 }
650
651 /**
652 * Called via eglMakeCurrent(), drv->API.MakeCurrent().
653 */
654 static EGLBoolean
655 dri2_make_current(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *dsurf,
656 _EGLSurface *rsurf, _EGLContext *ctx)
657 {
658 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
659 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
660 struct dri2_egl_surface *dri2_dsurf = dri2_egl_surface(dsurf);
661 struct dri2_egl_surface *dri2_rsurf = dri2_egl_surface(rsurf);
662 struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
663 _EGLContext *old_ctx;
664 _EGLSurface *old_dsurf, *old_rsurf;
665 __DRIdrawable *ddraw, *rdraw;
666 __DRIcontext *cctx;
667
668 /* make new bindings */
669 if (!_eglBindContext(ctx, dsurf, rsurf, &old_ctx, &old_dsurf, &old_rsurf))
670 return EGL_FALSE;
671
672 /* flush before context switch */
673 if (old_ctx && dri2_drv->glFlush)
674 dri2_drv->glFlush();
675
676 ddraw = (dri2_dsurf) ? dri2_dsurf->dri_drawable : NULL;
677 rdraw = (dri2_rsurf) ? dri2_rsurf->dri_drawable : NULL;
678 cctx = (dri2_ctx) ? dri2_ctx->dri_context : NULL;
679
680 if (old_ctx) {
681 __DRIcontext *old_cctx = dri2_egl_context(old_ctx)->dri_context;
682 dri2_dpy->core->unbindContext(old_cctx);
683 }
684
685 if ((cctx == NULL && ddraw == NULL && rdraw == NULL) ||
686 dri2_dpy->core->bindContext(cctx, ddraw, rdraw)) {
687 if (old_dsurf)
688 drv->API.DestroySurface(drv, disp, old_dsurf);
689 if (old_rsurf)
690 drv->API.DestroySurface(drv, disp, old_rsurf);
691 /* no destroy? */
692 if (old_ctx)
693 _eglPutContext(old_ctx);
694
695 return EGL_TRUE;
696 } else {
697 /* undo the previous _eglBindContext */
698 _eglBindContext(old_ctx, old_dsurf, old_rsurf, &ctx, &dsurf, &rsurf);
699 assert(&dri2_ctx->base == ctx &&
700 &dri2_dsurf->base == dsurf &&
701 &dri2_rsurf->base == rsurf);
702
703 _eglPutSurface(dsurf);
704 _eglPutSurface(rsurf);
705 _eglPutContext(ctx);
706
707 _eglPutSurface(old_dsurf);
708 _eglPutSurface(old_rsurf);
709 _eglPutContext(old_ctx);
710
711 return EGL_FALSE;
712 }
713 }
714
715 /*
716 * Called from eglGetProcAddress() via drv->API.GetProcAddress().
717 */
718 static _EGLProc
719 dri2_get_proc_address(_EGLDriver *drv, const char *procname)
720 {
721 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
722
723 return dri2_drv->get_proc_address(procname);
724 }
725
726 static EGLBoolean
727 dri2_wait_client(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx)
728 {
729 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
730 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(ctx->DrawSurface);
731
732 (void) drv;
733
734 /* FIXME: If EGL allows frontbuffer rendering for window surfaces,
735 * we need to copy fake to real here.*/
736
737 (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable);
738
739 return EGL_TRUE;
740 }
741
742 static EGLBoolean
743 dri2_wait_native(_EGLDriver *drv, _EGLDisplay *disp, EGLint engine)
744 {
745 (void) drv;
746 (void) disp;
747
748 if (engine != EGL_CORE_NATIVE_ENGINE)
749 return _eglError(EGL_BAD_PARAMETER, "eglWaitNative");
750 /* glXWaitX(); */
751
752 return EGL_TRUE;
753 }
754
755 static EGLBoolean
756 dri2_bind_tex_image(_EGLDriver *drv,
757 _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
758 {
759 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
760 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
761 struct dri2_egl_context *dri2_ctx;
762 _EGLContext *ctx;
763 GLint format, target;
764
765 ctx = _eglGetCurrentContext();
766 dri2_ctx = dri2_egl_context(ctx);
767
768 if (!_eglBindTexImage(drv, disp, surf, buffer))
769 return EGL_FALSE;
770
771 switch (dri2_surf->base.TextureFormat) {
772 case EGL_TEXTURE_RGB:
773 format = __DRI_TEXTURE_FORMAT_RGB;
774 break;
775 case EGL_TEXTURE_RGBA:
776 format = __DRI_TEXTURE_FORMAT_RGBA;
777 break;
778 default:
779 assert(0);
780 }
781
782 switch (dri2_surf->base.TextureTarget) {
783 case EGL_TEXTURE_2D:
784 target = GL_TEXTURE_2D;
785 break;
786 default:
787 assert(0);
788 }
789
790 (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
791 target, format,
792 dri2_surf->dri_drawable);
793
794 return EGL_TRUE;
795 }
796
797 static EGLBoolean
798 dri2_release_tex_image(_EGLDriver *drv,
799 _EGLDisplay *disp, _EGLSurface *surf, EGLint buffer)
800 {
801 #if __DRI_TEX_BUFFER_VERSION >= 3
802 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
803 struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
804 struct dri2_egl_context *dri2_ctx;
805 _EGLContext *ctx;
806 GLint target;
807
808 ctx = _eglGetCurrentContext();
809 dri2_ctx = dri2_egl_context(ctx);
810
811 if (!_eglReleaseTexImage(drv, disp, surf, buffer))
812 return EGL_FALSE;
813
814 switch (dri2_surf->base.TextureTarget) {
815 case EGL_TEXTURE_2D:
816 target = GL_TEXTURE_2D;
817 break;
818 default:
819 assert(0);
820 }
821 if (dri2_dpy->tex_buffer->releaseTexBuffer!=NULL)
822 (*dri2_dpy->tex_buffer->releaseTexBuffer)(dri2_ctx->dri_context,
823 target,
824 dri2_surf->dri_drawable);
825 #endif
826
827 return EGL_TRUE;
828 }
829
830 static _EGLImage *
831 dri2_create_image_khr_renderbuffer(_EGLDisplay *disp, _EGLContext *ctx,
832 EGLClientBuffer buffer,
833 const EGLint *attr_list)
834 {
835 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
836 struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx);
837 struct dri2_egl_image *dri2_img;
838 GLuint renderbuffer = (GLuint) (uintptr_t) buffer;
839
840 if (renderbuffer == 0) {
841 _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
842 return EGL_NO_IMAGE_KHR;
843 }
844
845 dri2_img = malloc(sizeof *dri2_img);
846 if (!dri2_img) {
847 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
848 return EGL_NO_IMAGE_KHR;
849 }
850
851 if (!_eglInitImage(&dri2_img->base, disp))
852 return EGL_NO_IMAGE_KHR;
853
854 dri2_img->dri_image =
855 dri2_dpy->image->createImageFromRenderbuffer(dri2_ctx->dri_context,
856 renderbuffer,
857 dri2_img);
858
859 return &dri2_img->base;
860 }
861
862 static _EGLImage *
863 dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
864 EGLClientBuffer buffer, const EGLint *attr_list)
865 {
866 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
867 struct dri2_egl_image *dri2_img;
868 EGLint format, name, pitch, err;
869 _EGLImageAttribs attrs;
870
871 (void) ctx;
872
873 name = (EGLint) (uintptr_t) buffer;
874
875 err = _eglParseImageAttribList(&attrs, disp, attr_list);
876 if (err != EGL_SUCCESS)
877 return NULL;
878
879 if (attrs.Width <= 0 || attrs.Height <= 0 ||
880 attrs.DRMBufferStrideMESA <= 0) {
881 _eglError(EGL_BAD_PARAMETER,
882 "bad width, height or stride");
883 return NULL;
884 }
885
886 switch (attrs.DRMBufferFormatMESA) {
887 case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
888 format = __DRI_IMAGE_FORMAT_ARGB8888;
889 pitch = attrs.DRMBufferStrideMESA;
890 break;
891 default:
892 _eglError(EGL_BAD_PARAMETER,
893 "dri2_create_image_khr: unsupported pixmap depth");
894 return NULL;
895 }
896
897 dri2_img = malloc(sizeof *dri2_img);
898 if (!dri2_img) {
899 _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
900 return NULL;
901 }
902
903 if (!_eglInitImage(&dri2_img->base, disp)) {
904 free(dri2_img);
905 return NULL;
906 }
907
908 dri2_img->dri_image =
909 dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
910 attrs.Width,
911 attrs.Height,
912 format,
913 name,
914 pitch,
915 dri2_img);
916 if (dri2_img->dri_image == NULL) {
917 free(dri2_img);
918 _eglError(EGL_BAD_ALLOC, "dri2_create_image_mesa_drm");
919 return NULL;
920 }
921
922 return &dri2_img->base;
923 }
924
925 static _EGLImage *
926 dri2_reference_drm_image(_EGLDisplay *disp, _EGLContext *ctx,
927 __DRIimage *dri_image, EGLint width, EGLint height)
928 {
929 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
930 EGLint attr_list[] = {
931 EGL_WIDTH, 0,
932 EGL_HEIGHT, 0,
933 EGL_DRM_BUFFER_STRIDE_MESA, 0,
934 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
935 EGL_NONE
936 };
937 EGLint name, stride;
938
939 dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_NAME, &name);
940 dri2_dpy->image->queryImage(dri_image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
941
942 attr_list[1] = width;
943 attr_list[3] = height;
944 attr_list[5] = stride / 4;
945
946 return dri2_create_image_mesa_drm_buffer(disp, ctx,
947 (EGLClientBuffer)(intptr_t) name,
948 attr_list);
949 }
950
951 #ifdef HAVE_WAYLAND_PLATFORM
952 static _EGLImage *
953 dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
954 EGLClientBuffer _buffer,
955 const EGLint *attr_list)
956 {
957 struct wl_buffer *buffer = (struct wl_buffer *) _buffer;
958 (void) attr_list;
959
960 if (!wayland_buffer_is_drm(buffer))
961 return NULL;
962
963 return dri2_reference_drm_image(disp, ctx,
964 wayland_drm_buffer_get_buffer(buffer),
965 buffer->width,
966 buffer->height);
967 }
968 #endif
969
970 _EGLImage *
971 dri2_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp,
972 _EGLContext *ctx, EGLenum target,
973 EGLClientBuffer buffer, const EGLint *attr_list)
974 {
975 (void) drv;
976
977 switch (target) {
978 case EGL_GL_RENDERBUFFER_KHR:
979 return dri2_create_image_khr_renderbuffer(disp, ctx, buffer, attr_list);
980 case EGL_DRM_BUFFER_MESA:
981 return dri2_create_image_mesa_drm_buffer(disp, ctx, buffer, attr_list);
982 #ifdef HAVE_WAYLAND_PLATFORM
983 case EGL_WAYLAND_BUFFER_WL:
984 return dri2_create_image_wayland_wl_buffer(disp, ctx, buffer, attr_list);
985 #endif
986 default:
987 _eglError(EGL_BAD_PARAMETER, "dri2_create_image_khr");
988 return EGL_NO_IMAGE_KHR;
989 }
990 }
991
992 static EGLBoolean
993 dri2_destroy_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *image)
994 {
995 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
996 struct dri2_egl_image *dri2_img = dri2_egl_image(image);
997
998 (void) drv;
999
1000 dri2_dpy->image->destroyImage(dri2_img->dri_image);
1001 free(dri2_img);
1002
1003 return EGL_TRUE;
1004 }
1005
1006 static _EGLImage *
1007 dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
1008 const EGLint *attr_list)
1009 {
1010 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1011 struct dri2_egl_image *dri2_img;
1012 _EGLImageAttribs attrs;
1013 unsigned int dri_use, valid_mask;
1014 int format;
1015 EGLint err = EGL_SUCCESS;
1016
1017 (void) drv;
1018
1019 dri2_img = malloc(sizeof *dri2_img);
1020 if (!dri2_img) {
1021 _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr");
1022 return EGL_NO_IMAGE_KHR;
1023 }
1024
1025 if (!attr_list) {
1026 err = EGL_BAD_PARAMETER;
1027 goto cleanup_img;
1028 }
1029
1030 if (!_eglInitImage(&dri2_img->base, disp)) {
1031 err = EGL_BAD_PARAMETER;
1032 goto cleanup_img;
1033 }
1034
1035 err = _eglParseImageAttribList(&attrs, disp, attr_list);
1036 if (err != EGL_SUCCESS)
1037 goto cleanup_img;
1038
1039 if (attrs.Width <= 0 || attrs.Height <= 0) {
1040 _eglLog(_EGL_WARNING, "bad width or height (%dx%d)",
1041 attrs.Width, attrs.Height);
1042 goto cleanup_img;
1043 }
1044
1045 switch (attrs.DRMBufferFormatMESA) {
1046 case EGL_DRM_BUFFER_FORMAT_ARGB32_MESA:
1047 format = __DRI_IMAGE_FORMAT_ARGB8888;
1048 break;
1049 default:
1050 _eglLog(_EGL_WARNING, "bad image format value 0x%04x",
1051 attrs.DRMBufferFormatMESA);
1052 goto cleanup_img;
1053 }
1054
1055 valid_mask =
1056 EGL_DRM_BUFFER_USE_SCANOUT_MESA |
1057 EGL_DRM_BUFFER_USE_SHARE_MESA |
1058 EGL_DRM_BUFFER_USE_CURSOR_MESA;
1059 if (attrs.DRMBufferUseMESA & ~valid_mask) {
1060 _eglLog(_EGL_WARNING, "bad image use bit 0x%04x",
1061 attrs.DRMBufferUseMESA & ~valid_mask);
1062 goto cleanup_img;
1063 }
1064
1065 dri_use = 0;
1066 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SHARE_MESA)
1067 dri_use |= __DRI_IMAGE_USE_SHARE;
1068 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_SCANOUT_MESA)
1069 dri_use |= __DRI_IMAGE_USE_SCANOUT;
1070 if (attrs.DRMBufferUseMESA & EGL_DRM_BUFFER_USE_CURSOR_MESA)
1071 dri_use |= __DRI_IMAGE_USE_CURSOR;
1072
1073 dri2_img->dri_image =
1074 dri2_dpy->image->createImage(dri2_dpy->dri_screen,
1075 attrs.Width, attrs.Height,
1076 format, dri_use, dri2_img);
1077 if (dri2_img->dri_image == NULL) {
1078 err = EGL_BAD_ALLOC;
1079 goto cleanup_img;
1080 }
1081
1082 return &dri2_img->base;
1083
1084 cleanup_img:
1085 free(dri2_img);
1086 _eglError(err, "dri2_create_drm_image_mesa");
1087
1088 return EGL_NO_IMAGE_KHR;
1089 }
1090
1091 static EGLBoolean
1092 dri2_export_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img,
1093 EGLint *name, EGLint *handle, EGLint *stride)
1094 {
1095 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1096 struct dri2_egl_image *dri2_img = dri2_egl_image(img);
1097
1098 (void) drv;
1099
1100 if (name && !dri2_dpy->image->queryImage(dri2_img->dri_image,
1101 __DRI_IMAGE_ATTRIB_NAME, name)) {
1102 _eglError(EGL_BAD_ALLOC, "dri2_export_drm_image_mesa");
1103 return EGL_FALSE;
1104 }
1105
1106 if (handle)
1107 dri2_dpy->image->queryImage(dri2_img->dri_image,
1108 __DRI_IMAGE_ATTRIB_HANDLE, handle);
1109
1110 if (stride)
1111 dri2_dpy->image->queryImage(dri2_img->dri_image,
1112 __DRI_IMAGE_ATTRIB_STRIDE, stride);
1113
1114 return EGL_TRUE;
1115 }
1116
1117 #ifdef HAVE_WAYLAND_PLATFORM
1118
1119 static void *
1120 dri2_wl_reference_buffer(void *user_data, uint32_t name,
1121 int32_t width, int32_t height,
1122 uint32_t stride, struct wl_visual *visual)
1123 {
1124 _EGLDisplay *disp = user_data;
1125 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1126 __DRIimage *image;
1127
1128 image = dri2_dpy->image->createImageFromName(dri2_dpy->dri_screen,
1129 width, height,
1130 __DRI_IMAGE_FORMAT_ARGB8888,
1131 name, stride / 4,
1132 NULL);
1133
1134 return image;
1135 }
1136
1137 static void
1138 dri2_wl_release_buffer(void *user_data, void *buffer)
1139 {
1140 _EGLDisplay *disp = user_data;
1141 __DRIimage *image = buffer;
1142 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1143
1144 dri2_dpy->image->destroyImage(image);
1145 }
1146
1147 static struct wayland_drm_callbacks wl_drm_callbacks = {
1148 .authenticate = NULL,
1149 .reference_buffer = dri2_wl_reference_buffer,
1150 .release_buffer = dri2_wl_release_buffer
1151 };
1152
1153 static EGLBoolean
1154 dri2_bind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1155 struct wl_display *wl_dpy)
1156 {
1157 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1158
1159 (void) drv;
1160
1161 if (dri2_dpy->wl_server_drm)
1162 return EGL_FALSE;
1163
1164 wl_drm_callbacks.authenticate =
1165 (int(*)(void *, uint32_t)) dri2_dpy->authenticate;
1166
1167 dri2_dpy->wl_server_drm =
1168 wayland_drm_init(wl_dpy, dri2_dpy->device_name,
1169 &wl_drm_callbacks, disp);
1170
1171 if (!dri2_dpy->wl_server_drm)
1172 return EGL_FALSE;
1173
1174 return EGL_TRUE;
1175 }
1176
1177 static EGLBoolean
1178 dri2_unbind_wayland_display_wl(_EGLDriver *drv, _EGLDisplay *disp,
1179 struct wl_display *wl_dpy)
1180 {
1181 struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
1182
1183 (void) drv;
1184
1185 if (!dri2_dpy->wl_server_drm)
1186 return EGL_FALSE;
1187
1188 wayland_drm_uninit(dri2_dpy->wl_server_drm);
1189 dri2_dpy->wl_server_drm = NULL;
1190
1191 return EGL_TRUE;
1192 }
1193 #endif
1194
1195 static void
1196 dri2_unload(_EGLDriver *drv)
1197 {
1198 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1199
1200 if (dri2_drv->handle)
1201 dlclose(dri2_drv->handle);
1202 free(dri2_drv);
1203 }
1204
1205 static EGLBoolean
1206 dri2_load(_EGLDriver *drv)
1207 {
1208 struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv);
1209 #ifdef HAVE_SHARED_GLAPI
1210 const char *libname = "libglapi.so.0";
1211 #else
1212 /*
1213 * Both libGL.so and libglapi.so are glapi providers. There is no way to
1214 * tell which one to load.
1215 */
1216 const char *libname = NULL;
1217 #endif
1218 void *handle;
1219
1220 /* RTLD_GLOBAL to make sure glapi symbols are visible to DRI drivers */
1221 handle = dlopen(libname, RTLD_LAZY | RTLD_GLOBAL);
1222 if (handle) {
1223 dri2_drv->get_proc_address = (_EGLProc (*)(const char *))
1224 dlsym(handle, "_glapi_get_proc_address");
1225 if (!dri2_drv->get_proc_address || !libname) {
1226 /* no need to keep a reference */
1227 dlclose(handle);
1228 handle = NULL;
1229 }
1230 }
1231
1232 /* if glapi is not available, loading DRI drivers will fail */
1233 if (!dri2_drv->get_proc_address) {
1234 _eglLog(_EGL_WARNING, "DRI2: failed to find _glapi_get_proc_address");
1235 return EGL_FALSE;
1236 }
1237
1238 dri2_drv->glFlush = (void (*)(void))
1239 dri2_drv->get_proc_address("glFlush");
1240
1241 dri2_drv->handle = handle;
1242
1243 return EGL_TRUE;
1244 }
1245
1246 /**
1247 * This is the main entrypoint into the driver, called by libEGL.
1248 * Create a new _EGLDriver object and init its dispatch table.
1249 */
1250 _EGLDriver *
1251 _EGL_MAIN(const char *args)
1252 {
1253 struct dri2_egl_driver *dri2_drv;
1254
1255 (void) args;
1256
1257 dri2_drv = malloc(sizeof *dri2_drv);
1258 if (!dri2_drv)
1259 return NULL;
1260
1261 memset(dri2_drv, 0, sizeof *dri2_drv);
1262
1263 if (!dri2_load(&dri2_drv->base))
1264 return NULL;
1265
1266 _eglInitDriverFallbacks(&dri2_drv->base);
1267 dri2_drv->base.API.Initialize = dri2_initialize;
1268 dri2_drv->base.API.Terminate = dri2_terminate;
1269 dri2_drv->base.API.CreateContext = dri2_create_context;
1270 dri2_drv->base.API.MakeCurrent = dri2_make_current;
1271 dri2_drv->base.API.GetProcAddress = dri2_get_proc_address;
1272 dri2_drv->base.API.WaitClient = dri2_wait_client;
1273 dri2_drv->base.API.WaitNative = dri2_wait_native;
1274 dri2_drv->base.API.BindTexImage = dri2_bind_tex_image;
1275 dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image;
1276 dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr;
1277 dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr;
1278 dri2_drv->base.API.CreateDRMImageMESA = dri2_create_drm_image_mesa;
1279 dri2_drv->base.API.ExportDRMImageMESA = dri2_export_drm_image_mesa;
1280 #ifdef HAVE_WAYLAND_PLATFORM
1281 dri2_drv->base.API.BindWaylandDisplayWL = dri2_bind_wayland_display_wl;
1282 dri2_drv->base.API.UnbindWaylandDisplayWL = dri2_unbind_wayland_display_wl;
1283 #endif
1284
1285 dri2_drv->base.Name = "DRI2";
1286 dri2_drv->base.Unload = dri2_unload;
1287
1288 return &dri2_drv->base;
1289 }