egl_g3d.c revision ac8fdbc1c723afb19eeaba5457ba78d0bf33b8d4 
1/*
2 * Mesa 3-D graphics library
3 * Version:  7.8
4 *
5 * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26#include "egldriver.h"
27#include "eglcurrent.h"
28#include "egllog.h"
29
30#include "pipe/p_screen.h"
31#include "util/u_memory.h"
32#include "util/u_format.h"
33#include "util/u_string.h"
34#include "util/u_atomic.h"
35
36#include "egl_g3d.h"
37#include "egl_g3d_api.h"
38#include "egl_g3d_st.h"
39#include "egl_g3d_loader.h"
40#include "native.h"
41
42static void
43egl_g3d_invalid_surface(struct native_display *ndpy,
44                        struct native_surface *nsurf,
45                        unsigned int seq_num)
46{
47   /* XXX not thread safe? */
48   struct egl_g3d_surface *gsurf = egl_g3d_surface(nsurf->user_data);
49
50   if (gsurf && gsurf->stfbi)
51      p_atomic_inc(&gsurf->stfbi->stamp);
52}
53
54static struct pipe_screen *
55egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
56{
57   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
58   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
59   return gdpy->loader->create_drm_screen(name, fd);
60}
61
62static struct pipe_screen *
63egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
64{
65   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
66   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
67   return gdpy->loader->create_sw_screen(ws);
68}
69
70static struct pipe_resource *
71egl_g3d_lookup_egl_image(struct native_display *ndpy, void *egl_image)
72{
73   _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
74   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
75   struct st_egl_image img;
76   struct pipe_resource *resource = NULL;
77
78   memset(&img, 0, sizeof(img));
79   if (gdpy->smapi->get_egl_image(gdpy->smapi, egl_image, &img))
80      resource = img.texture;
81
82   return resource;
83}
84
85static const struct native_event_handler egl_g3d_native_event_handler = {
86   egl_g3d_invalid_surface,
87   egl_g3d_new_drm_screen,
88   egl_g3d_new_sw_screen,
89   egl_g3d_lookup_egl_image
90};
91
92/**
93 * Get the native platform.
94 */
95static const struct native_platform *
96egl_g3d_get_platform(_EGLDriver *drv, _EGLPlatformType plat)
97{
98   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
99
100   if (!gdrv->platforms[plat]) {
101      const char *plat_name = NULL;
102      const struct native_platform *nplat = NULL;
103
104      switch (plat) {
105      case _EGL_PLATFORM_WINDOWS:
106         plat_name = "Windows";
107#ifdef HAVE_GDI_BACKEND
108         nplat = native_get_gdi_platform(&egl_g3d_native_event_handler);
109#endif
110         break;
111      case _EGL_PLATFORM_X11:
112         plat_name = "X11";
113#ifdef HAVE_X11_BACKEND
114         nplat = native_get_x11_platform(&egl_g3d_native_event_handler);
115#endif
116	 break;
117      case _EGL_PLATFORM_WAYLAND:
118         plat_name = "wayland";
119#ifdef HAVE_WAYLAND_BACKEND
120         nplat = native_get_wayland_platform(&egl_g3d_native_event_handler);
121#endif
122         break;
123      case _EGL_PLATFORM_DRM:
124         plat_name = "DRM";
125#ifdef HAVE_DRM_BACKEND
126         nplat = native_get_drm_platform(&egl_g3d_native_event_handler);
127#endif
128         break;
129      case _EGL_PLATFORM_FBDEV:
130         plat_name = "FBDEV";
131#ifdef HAVE_FBDEV_BACKEND
132         nplat = native_get_fbdev_platform(&egl_g3d_native_event_handler);
133#endif
134         break;
135      default:
136         break;
137      }
138
139      if (!nplat)
140         _eglLog(_EGL_WARNING, "unsupported platform %s", plat_name);
141
142      gdrv->platforms[plat] = nplat;
143   }
144
145   return gdrv->platforms[plat];
146}
147
148#ifdef EGL_MESA_screen_surface
149
150static void
151egl_g3d_add_screens(_EGLDriver *drv, _EGLDisplay *dpy)
152{
153   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
154   const struct native_connector **native_connectors;
155   EGLint num_connectors, i;
156
157   native_connectors =
158      gdpy->native->modeset->get_connectors(gdpy->native, &num_connectors, NULL);
159   if (!num_connectors) {
160      if (native_connectors)
161         FREE(native_connectors);
162      return;
163   }
164
165   for (i = 0; i < num_connectors; i++) {
166      const struct native_connector *nconn = native_connectors[i];
167      struct egl_g3d_screen *gscr;
168      const struct native_mode **native_modes;
169      EGLint num_modes, j;
170
171      /* TODO support for hotplug */
172      native_modes =
173         gdpy->native->modeset->get_modes(gdpy->native, nconn, &num_modes);
174      if (!num_modes) {
175         if (native_modes)
176            FREE(native_modes);
177         continue;
178      }
179
180      gscr = CALLOC_STRUCT(egl_g3d_screen);
181      if (!gscr) {
182         FREE(native_modes);
183         continue;
184      }
185
186      _eglInitScreen(&gscr->base, dpy, num_modes);
187      for (j = 0; j < gscr->base.NumModes; j++) {
188         const struct native_mode *nmode = native_modes[j];
189         _EGLMode *mode = &gscr->base.Modes[j];
190
191         mode->Width = nmode->width;
192         mode->Height = nmode->height;
193         mode->RefreshRate = nmode->refresh_rate;
194         mode->Optimal = EGL_FALSE;
195         mode->Interlaced = EGL_FALSE;
196         /* no need to strdup() */
197         mode->Name = nmode->desc;
198      }
199
200      gscr->native = nconn;
201      gscr->native_modes = native_modes;
202
203      _eglLinkScreen(&gscr->base);
204   }
205
206   FREE(native_connectors);
207}
208
209#endif /* EGL_MESA_screen_surface */
210
211/**
212 * Initialize and validate the EGL config attributes.
213 */
214static EGLBoolean
215init_config_attributes(_EGLConfig *conf, const struct native_config *nconf,
216                       EGLint api_mask, enum pipe_format depth_stencil_format,
217                       EGLBoolean preserve_buffer, EGLint max_swap_interval)
218{
219   uint rgba[4], depth_stencil[2], buffer_size;
220   EGLint surface_type;
221   EGLint i;
222
223   /* get the color and depth/stencil component sizes */
224   assert(nconf->color_format != PIPE_FORMAT_NONE);
225   buffer_size = 0;
226   for (i = 0; i < 4; i++) {
227      rgba[i] = util_format_get_component_bits(nconf->color_format,
228            UTIL_FORMAT_COLORSPACE_RGB, i);
229      buffer_size += rgba[i];
230   }
231   for (i = 0; i < 2; i++) {
232      if (depth_stencil_format != PIPE_FORMAT_NONE) {
233         depth_stencil[i] =
234            util_format_get_component_bits(depth_stencil_format,
235               UTIL_FORMAT_COLORSPACE_ZS, i);
236      }
237      else {
238         depth_stencil[i] = 0;
239      }
240   }
241
242   surface_type = 0x0;
243   /* pixmap surfaces should be EGL_SINGLE_BUFFER */
244   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT)) {
245      if (nconf->pixmap_bit)
246         surface_type |= EGL_PIXMAP_BIT;
247   }
248   /* the others surfaces should be EGL_BACK_BUFFER (or settable) */
249   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT)) {
250      if (nconf->window_bit)
251         surface_type |= EGL_WINDOW_BIT;
252#ifdef EGL_MESA_screen_surface
253      if (nconf->scanout_bit)
254         surface_type |= EGL_SCREEN_BIT_MESA;
255#endif
256      surface_type |= EGL_PBUFFER_BIT;
257   }
258
259   conf->Conformant = api_mask;
260   conf->RenderableType = api_mask;
261
262   conf->RedSize = rgba[0];
263   conf->GreenSize = rgba[1];
264   conf->BlueSize = rgba[2];
265   conf->AlphaSize = rgba[3];
266   conf->BufferSize = buffer_size;
267
268   conf->DepthSize = depth_stencil[0];
269   conf->StencilSize = depth_stencil[1];
270
271   /* st/vega will allocate the mask on demand */
272   if (api_mask & EGL_OPENVG_BIT)
273      conf->AlphaMaskSize = 8;
274
275   conf->SurfaceType = surface_type;
276
277   conf->NativeRenderable = EGL_TRUE;
278   if (surface_type & EGL_WINDOW_BIT) {
279      conf->NativeVisualID = nconf->native_visual_id;
280      conf->NativeVisualType = nconf->native_visual_type;
281   }
282
283   if (surface_type & EGL_PBUFFER_BIT) {
284      conf->BindToTextureRGB = EGL_TRUE;
285      if (rgba[3])
286         conf->BindToTextureRGBA = EGL_TRUE;
287
288      conf->MaxPbufferWidth = 4096;
289      conf->MaxPbufferHeight = 4096;
290      conf->MaxPbufferPixels = 4096 * 4096;
291   }
292
293   conf->Level = nconf->level;
294
295   if (nconf->transparent_rgb) {
296      conf->TransparentType = EGL_TRANSPARENT_RGB;
297      conf->TransparentRedValue = nconf->transparent_rgb_values[0];
298      conf->TransparentGreenValue = nconf->transparent_rgb_values[1];
299      conf->TransparentBlueValue = nconf->transparent_rgb_values[2];
300   }
301
302   conf->MinSwapInterval = 0;
303   conf->MaxSwapInterval = max_swap_interval;
304   if (preserve_buffer)
305      conf->SurfaceType |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
306
307   return _eglValidateConfig(conf, EGL_FALSE);
308}
309
310/**
311 * Initialize an EGL config from the native config.
312 */
313static EGLBoolean
314egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
315                    _EGLConfig *conf, const struct native_config *nconf,
316                    enum pipe_format depth_stencil_format,
317                    int preserve_buffer, int max_swap_interval)
318{
319   struct egl_g3d_config *gconf = egl_g3d_config(conf);
320   EGLint buffer_mask;
321   EGLBoolean valid;
322
323   buffer_mask = 0x0;
324   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT))
325      buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
326   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
327      buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
328   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_RIGHT))
329      buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
330   if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_RIGHT))
331      buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
332
333   gconf->stvis.buffer_mask = buffer_mask;
334   gconf->stvis.color_format = nconf->color_format;
335   gconf->stvis.depth_stencil_format = depth_stencil_format;
336   gconf->stvis.accum_format = PIPE_FORMAT_NONE;
337   gconf->stvis.samples = 0;
338
339   /* will be overridden per surface */
340   gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
341      ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
342
343   valid = init_config_attributes(&gconf->base,
344         nconf, dpy->ClientAPIs, depth_stencil_format,
345         preserve_buffer, max_swap_interval);
346   if (!valid) {
347      _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", nconf->native_visual_id);
348      return EGL_FALSE;
349   }
350
351   gconf->native = nconf;
352
353   return EGL_TRUE;
354}
355
356/**
357 * Get all interested depth/stencil formats of a display.
358 */
359static EGLint
360egl_g3d_fill_depth_stencil_formats(_EGLDisplay *dpy,
361                                   enum pipe_format formats[8])
362{
363   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
364   struct pipe_screen *screen = gdpy->native->screen;
365   const EGLint candidates[] = {
366      1, PIPE_FORMAT_Z16_UNORM,
367      1, PIPE_FORMAT_Z32_UNORM,
368      2, PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
369      2, PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
370      0
371   };
372   const EGLint *fmt = candidates;
373   EGLint count;
374
375   count = 0;
376   formats[count++] = PIPE_FORMAT_NONE;
377
378   while (*fmt) {
379      EGLint i, n = *fmt++;
380
381      /* pick the first supported format */
382      for (i = 0; i < n; i++) {
383         if (screen->is_format_supported(screen, fmt[i],
384                  PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL)) {
385            formats[count++] = fmt[i];
386            break;
387         }
388      }
389
390      fmt += n;
391   }
392
393   return count;
394}
395
396/**
397 * Add configs to display and return the next config ID.
398 */
399static EGLint
400egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id)
401{
402   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
403   const struct native_config **native_configs;
404   enum pipe_format depth_stencil_formats[8];
405   int num_formats, num_configs, i, j;
406   int preserve_buffer, max_swap_interval;
407
408   native_configs = gdpy->native->get_configs(gdpy->native, &num_configs);
409   if (!num_configs) {
410      if (native_configs)
411         FREE(native_configs);
412      return id;
413   }
414
415   preserve_buffer =
416      gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESERVE_BUFFER);
417   max_swap_interval =
418      gdpy->native->get_param(gdpy->native, NATIVE_PARAM_MAX_SWAP_INTERVAL);
419
420   num_formats = egl_g3d_fill_depth_stencil_formats(dpy,
421         depth_stencil_formats);
422
423   for (i = 0; i < num_configs; i++) {
424      for (j = 0; j < num_formats; j++) {
425         struct egl_g3d_config *gconf;
426
427         gconf = CALLOC_STRUCT(egl_g3d_config);
428         if (gconf) {
429            _eglInitConfig(&gconf->base, dpy, id);
430            if (!egl_g3d_init_config(drv, dpy, &gconf->base,
431                     native_configs[i], depth_stencil_formats[j],
432                     preserve_buffer, max_swap_interval)) {
433               FREE(gconf);
434               break;
435            }
436
437            _eglLinkConfig(&gconf->base);
438            id++;
439         }
440      }
441   }
442
443   FREE(native_configs);
444   return id;
445}
446
447static void
448egl_g3d_free_config(void *conf)
449{
450   struct egl_g3d_config *gconf = egl_g3d_config((_EGLConfig *) conf);
451   FREE(gconf);
452}
453
454static void
455egl_g3d_free_screen(void *scr)
456{
457#ifdef EGL_MESA_screen_surface
458   struct egl_g3d_screen *gscr = egl_g3d_screen((_EGLScreen *) scr);
459   FREE(gscr->native_modes);
460   FREE(gscr);
461#endif
462}
463
464static EGLBoolean
465egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
466{
467   struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
468
469   _eglReleaseDisplayResources(drv, dpy);
470
471   if (dpy->Configs) {
472      _eglDestroyArray(dpy->Configs, egl_g3d_free_config);
473      dpy->Configs = NULL;
474   }
475   if (dpy->Screens) {
476      _eglDestroyArray(dpy->Screens, egl_g3d_free_screen);
477      dpy->Screens = NULL;
478   }
479
480   _eglCleanupDisplay(dpy);
481
482   if (gdpy->smapi)
483      egl_g3d_destroy_st_manager(gdpy->smapi);
484
485   if (gdpy->native)
486      gdpy->native->destroy(gdpy->native);
487
488   FREE(gdpy);
489   dpy->DriverData = NULL;
490
491   return EGL_TRUE;
492}
493
494static EGLBoolean
495egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy)
496{
497   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
498   struct egl_g3d_display *gdpy;
499   const struct native_platform *nplat;
500
501   nplat = egl_g3d_get_platform(drv, dpy->Platform);
502   if (!nplat)
503      return EGL_FALSE;
504
505   if (dpy->Options.TestOnly)
506      return EGL_TRUE;
507
508   gdpy = CALLOC_STRUCT(egl_g3d_display);
509   if (!gdpy) {
510      _eglError(EGL_BAD_ALLOC, "eglInitialize");
511      goto fail;
512   }
513   gdpy->loader = gdrv->loader;
514   dpy->DriverData = gdpy;
515
516   _eglLog(_EGL_INFO, "use %s for display %p",
517         nplat->name, dpy->PlatformDisplay);
518   gdpy->native =
519      nplat->create_display(dpy->PlatformDisplay, dpy->Options.UseFallback);
520   if (!gdpy->native) {
521      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
522      goto fail;
523   }
524   gdpy->native->user_data = (void *) dpy;
525   if (!gdpy->native->init_screen(gdpy->native)) {
526      _eglError(EGL_NOT_INITIALIZED,
527            "eglInitialize(failed to initialize screen)");
528      goto fail;
529   }
530
531   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_DEFAULT_MASK)
532      dpy->ClientAPIs |= EGL_OPENGL_BIT;
533   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES1_MASK)
534      dpy->ClientAPIs |= EGL_OPENGL_ES_BIT;
535   if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES2_MASK)
536      dpy->ClientAPIs |= EGL_OPENGL_ES2_BIT;
537   if (gdpy->loader->profile_masks[ST_API_OPENVG] & ST_PROFILE_DEFAULT_MASK)
538      dpy->ClientAPIs |= EGL_OPENVG_BIT;
539
540   gdpy->smapi = egl_g3d_create_st_manager(dpy);
541   if (!gdpy->smapi) {
542      _eglError(EGL_NOT_INITIALIZED,
543            "eglInitialize(failed to create st manager)");
544      goto fail;
545   }
546
547#ifdef EGL_MESA_screen_surface
548   /* enable MESA_screen_surface before adding (and validating) configs */
549   if (gdpy->native->modeset) {
550      dpy->Extensions.MESA_screen_surface = EGL_TRUE;
551      egl_g3d_add_screens(drv, dpy);
552   }
553#endif
554
555   dpy->Extensions.KHR_image_base = EGL_TRUE;
556   if (gdpy->native->get_param(gdpy->native, NATIVE_PARAM_USE_NATIVE_BUFFER))
557      dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
558
559   dpy->Extensions.KHR_reusable_sync = EGL_TRUE;
560   dpy->Extensions.KHR_fence_sync = EGL_TRUE;
561
562   dpy->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
563   dpy->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
564   dpy->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
565
566   if (dpy->Platform == _EGL_PLATFORM_DRM) {
567      dpy->Extensions.MESA_drm_display = EGL_TRUE;
568      if (gdpy->native->buffer)
569         dpy->Extensions.MESA_drm_image = EGL_TRUE;
570   }
571
572   if (dpy->Platform == _EGL_PLATFORM_WAYLAND && gdpy->native->buffer)
573      dpy->Extensions.MESA_drm_image = EGL_TRUE;
574
575#ifdef EGL_WL_bind_wayland_display
576   if (gdpy->native->wayland_bufmgr)
577      dpy->Extensions.WL_bind_wayland_display = EGL_TRUE;
578#endif
579
580   if (egl_g3d_add_configs(drv, dpy, 1) == 1) {
581      _eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)");
582      goto fail;
583   }
584
585   dpy->VersionMajor = 1;
586   dpy->VersionMinor = 4;
587
588   return EGL_TRUE;
589
590fail:
591   if (gdpy)
592      egl_g3d_terminate(drv, dpy);
593   return EGL_FALSE;
594}
595
596static _EGLProc
597egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname)
598{
599   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
600   struct st_api *stapi = NULL;
601
602   if (procname && procname[0] == 'v' && procname[1] == 'g')
603      stapi = gdrv->loader->get_st_api(ST_API_OPENVG);
604   else if (procname && procname[0] == 'g' && procname[1] == 'l')
605      stapi = gdrv->loader->get_st_api(ST_API_OPENGL);
606
607   return (_EGLProc) ((stapi) ?
608         stapi->get_proc_address(stapi, procname) : NULL);
609}
610
611_EGLDriver *
612egl_g3d_create_driver(const struct egl_g3d_loader *loader)
613{
614   struct egl_g3d_driver *gdrv;
615
616   gdrv = CALLOC_STRUCT(egl_g3d_driver);
617   if (!gdrv)
618      return NULL;
619
620   gdrv->loader = loader;
621
622   egl_g3d_init_driver_api(&gdrv->base);
623   gdrv->base.API.Initialize = egl_g3d_initialize;
624   gdrv->base.API.Terminate = egl_g3d_terminate;
625   gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address;
626
627   /* to be filled by the caller */
628   gdrv->base.Name = NULL;
629   gdrv->base.Unload = NULL;
630
631   return &gdrv->base;
632}
633
634void
635egl_g3d_destroy_driver(_EGLDriver *drv)
636{
637   struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
638   FREE(gdrv);
639}
640