src/gallium/state_trackers/egl/common/egl_g3d.c

   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
  35 #include "egl_g3d.h"
  36 #include "egl_g3d_api.h"
  37 #include "egl_g3d_st.h"
  38 #include "egl_g3d_loader.h"
  39 #include "native.h"
  40
  41 /**
  42  * Get the native platform.
  43  */
  44 static const struct native_platform *
  45 egl_g3d_get_platform(_EGLDriver *drv, _EGLPlatformType plat)
  46 {
  47    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
  48
  49    if (!gdrv->platforms[plat]) {
  50       const char *plat_name = NULL;
  51       const struct native_platform *nplat = NULL;
  52
  53       switch (plat) {
  54       case _EGL_PLATFORM_WINDOWS:
  55          plat_name = "Windows";
  56 #ifdef HAVE_GDI_BACKEND
  57          nplat = native_get_gdi_platform();
  58 #endif
  59          break;
  60       case _EGL_PLATFORM_X11:
  61          plat_name = "X11";
  62 #ifdef HAVE_X11_BACKEND
  63          nplat = native_get_x11_platform();
  64 #endif
  65          break;
  66       case _EGL_PLATFORM_DRM:
  67          plat_name = "DRM";
  68 #ifdef HAVE_DRM_BACKEND
  69          nplat = native_get_drm_platform();
  70 #endif
  71          break;
  72       case _EGL_PLATFORM_FBDEV:
  73          plat_name = "FBDEV";
  74 #ifdef HAVE_FBDEV_BACKEND
  75          nplat = native_get_fbdev_platform();
  76 #endif
  77          break;
  78       default:
  79          break;
  80       }
  81
  82       if (!nplat)
  83          _eglLog(_EGL_WARNING, "unsupported platform %s", plat_name);
  84
  85       gdrv->platforms[plat] = nplat;
  86    }
  87
  88    return gdrv->platforms[plat];
  89 }
  90
  91 #ifdef EGL_MESA_screen_surface
  92
  93 static void
  94 egl_g3d_add_screens(_EGLDriver *drv, _EGLDisplay *dpy)
  95 {
  96    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  97    const struct native_connector **native_connectors;
  98    EGLint num_connectors, i;
  99
 100    native_connectors =
 101       gdpy->native->modeset->get_connectors(gdpy->native, &num_connectors, NULL);
 102    if (!num_connectors) {
 103       if (native_connectors)
 104          FREE(native_connectors);
 105       return;
 106    }
 107
 108    for (i = 0; i < num_connectors; i++) {
 109       const struct native_connector *nconn = native_connectors[i];
 110       struct egl_g3d_screen *gscr;
 111       const struct native_mode **native_modes;
 112       EGLint num_modes, j;
 113
 114       /* TODO support for hotplug */
 115       native_modes =
 116          gdpy->native->modeset->get_modes(gdpy->native, nconn, &num_modes);
 117       if (!num_modes) {
 118          if (native_modes)
 119             FREE(native_modes);
 120          continue;
 121       }
 122
 123       gscr = CALLOC_STRUCT(egl_g3d_screen);
 124       if (!gscr) {
 125          FREE(native_modes);
 126          continue;
 127       }
 128
 129       _eglInitScreen(&gscr->base);
 130
 131       for (j = 0; j < num_modes; j++) {
 132          const struct native_mode *nmode = native_modes[j];
 133          _EGLMode *mode;
 134
 135          mode = _eglAddNewMode(&gscr->base, nmode->width, nmode->height,
 136                nmode->refresh_rate, nmode->desc);
 137          if (!mode)
 138             break;
 139          /* gscr->native_modes and gscr->base.Modes should be consistent */
 140          assert(mode == &gscr->base.Modes[j]);
 141       }
 142
 143       gscr->native = nconn;
 144       gscr->native_modes = native_modes;
 145
 146       _eglAddScreen(dpy, &gscr->base);
 147    }
 148
 149    FREE(native_connectors);
 150 }
 151
 152 #endif /* EGL_MESA_screen_surface */
 153
 154 /**
 155  * Initialize and validate the EGL config attributes.
 156  */
 157 static EGLBoolean
 158 init_config_attributes(_EGLConfig *conf, const struct native_config *nconf,
 159                        EGLint api_mask, enum pipe_format depth_stencil_format)
 160 {
 161    uint rgba[4], depth_stencil[2], buffer_size;
 162    EGLint surface_type;
 163    EGLint i;
 164
 165    /* get the color and depth/stencil component sizes */
 166    assert(nconf->color_format != PIPE_FORMAT_NONE);
 167    buffer_size = 0;
 168    for (i = 0; i < 4; i++) {
 169       rgba[i] = util_format_get_component_bits(nconf->color_format,
 170             UTIL_FORMAT_COLORSPACE_RGB, i);
 171       buffer_size += rgba[i];
 172    }
 173    for (i = 0; i < 2; i++) {
 174       if (depth_stencil_format != PIPE_FORMAT_NONE) {
 175          depth_stencil[i] =
 176             util_format_get_component_bits(depth_stencil_format,
 177                UTIL_FORMAT_COLORSPACE_ZS, i);
 178       }
 179       else {
 180          depth_stencil[i] = 0;
 181       }
 182    }
 183
 184    surface_type = 0x0;
 185    if (nconf->window_bit)
 186       surface_type |= EGL_WINDOW_BIT;
 187    if (nconf->pixmap_bit)
 188       surface_type |= EGL_PIXMAP_BIT;
 189 #ifdef EGL_MESA_screen_surface
 190    if (nconf->scanout_bit)
 191       surface_type |= EGL_SCREEN_BIT_MESA;
 192 #endif
 193
 194    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
 195       surface_type |= EGL_PBUFFER_BIT;
 196
 197    conf->Conformant = api_mask;
 198    conf->RenderableType = api_mask;
 199
 200    conf->RedSize = rgba[0];
 201    conf->GreenSize = rgba[1];
 202    conf->BlueSize = rgba[2];
 203    conf->AlphaSize = rgba[3];
 204    conf->BufferSize = buffer_size;
 205
 206    conf->DepthSize = depth_stencil[0];
 207    conf->StencilSize = depth_stencil[1];
 208
 209    conf->SurfaceType = surface_type;
 210
 211    conf->NativeRenderable = EGL_TRUE;
 212    if (surface_type & EGL_WINDOW_BIT) {
 213       conf->NativeVisualID = nconf->native_visual_id;
 214       conf->NativeVisualType = nconf->native_visual_type;
 215    }
 216
 217    if (surface_type & EGL_PBUFFER_BIT) {
 218       conf->BindToTextureRGB = EGL_TRUE;
 219       if (rgba[3])
 220          conf->BindToTextureRGBA = EGL_TRUE;
 221
 222       conf->MaxPbufferWidth = 4096;
 223       conf->MaxPbufferHeight = 4096;
 224       conf->MaxPbufferPixels = 4096 * 4096;
 225    }
 226
 227    conf->Level = nconf->level;
 228    conf->Samples = nconf->samples;
 229    conf->SampleBuffers = 0;
 230
 231    if (nconf->slow_config)
 232       conf->ConfigCaveat = EGL_SLOW_CONFIG;
 233
 234    if (nconf->transparent_rgb) {
 235       conf->TransparentType = EGL_TRANSPARENT_RGB;
 236       conf->TransparentRedValue = nconf->transparent_rgb_values[0];
 237       conf->TransparentGreenValue = nconf->transparent_rgb_values[1];
 238       conf->TransparentBlueValue = nconf->transparent_rgb_values[2];
 239    }
 240
 241    return _eglValidateConfig(conf, EGL_FALSE);
 242 }
 243
 244 /**
 245  * Initialize an EGL config from the native config.
 246  */
 247 static EGLBoolean
 248 egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
 249                     _EGLConfig *conf, const struct native_config *nconf,
 250                     enum pipe_format depth_stencil_format)
 251 {
 252    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 253    EGLint buffer_mask, api_mask;
 254    EGLBoolean valid;
 255
 256    /* skip single-buffered configs */
 257    if (!(nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT)))
 258       return EGL_FALSE;
 259
 260    buffer_mask = 0x0;
 261    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT))
 262       buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 263    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
 264       buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 265    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_RIGHT))
 266       buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 267    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_RIGHT))
 268       buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 269
 270    gconf->stvis.buffer_mask = buffer_mask;
 271    gconf->stvis.color_format = nconf->color_format;
 272    gconf->stvis.depth_stencil_format = depth_stencil_format;
 273    gconf->stvis.accum_format = PIPE_FORMAT_NONE;
 274    gconf->stvis.samples = nconf->samples;
 275
 276    gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
 277       ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
 278
 279    api_mask = dpy->ClientAPIsMask;
 280    /* this is required by EGL, not by OpenGL ES */
 281    if (nconf->window_bit &&
 282        gconf->stvis.render_buffer != ST_ATTACHMENT_BACK_LEFT)
 283       api_mask &= ~(EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT);
 284
 285    if (!api_mask) {
 286       _eglLog(_EGL_DEBUG, "no state tracker supports config 0x%x",
 287             nconf->native_visual_id);
 288    }
 289
 290    valid = init_config_attributes(&gconf->base,
 291          nconf, api_mask, depth_stencil_format);
 292    if (!valid) {
 293       _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", nconf->native_visual_id);
 294       return EGL_FALSE;
 295    }
 296
 297    gconf->native = nconf;
 298
 299    return EGL_TRUE;
 300 }
 301
 302 /**
 303  * Get all interested depth/stencil formats of a display.
 304  */
 305 static EGLint
 306 egl_g3d_fill_depth_stencil_formats(_EGLDisplay *dpy,
 307                                    enum pipe_format formats[8])
 308 {
 309    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 310    struct pipe_screen *screen = gdpy->native->screen;
 311    const EGLint candidates[] = {
 312       1, PIPE_FORMAT_Z16_UNORM,
 313       1, PIPE_FORMAT_Z32_UNORM,
 314       2, PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
 315       2, PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
 316       0
 317    };
 318    const EGLint *fmt = candidates;
 319    EGLint count;
 320
 321    count = 0;
 322    formats[count++] = PIPE_FORMAT_NONE;
 323
 324    while (*fmt) {
 325       EGLint i, n = *fmt++;
 326
 327       /* pick the first supported format */
 328       for (i = 0; i < n; i++) {
 329          if (screen->is_format_supported(screen, fmt[i],
 330                   PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL, 0)) {
 331             formats[count++] = fmt[i];
 332             break;
 333          }
 334       }
 335
 336       fmt += n;
 337    }
 338
 339    return count;
 340 }
 341
 342 /**
 343  * Add configs to display and return the next config ID.
 344  */
 345 static EGLint
 346 egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id)
 347 {
 348    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 349    const struct native_config **native_configs;
 350    enum pipe_format depth_stencil_formats[8];
 351    int num_formats, num_configs, i, j;
 352
 353    native_configs = gdpy->native->get_configs(gdpy->native, &num_configs);
 354    if (!num_configs) {
 355       if (native_configs)
 356          FREE(native_configs);
 357       return id;
 358    }
 359
 360    num_formats = egl_g3d_fill_depth_stencil_formats(dpy,
 361          depth_stencil_formats);
 362
 363    for (i = 0; i < num_configs; i++) {
 364       for (j = 0; j < num_formats; j++) {
 365          struct egl_g3d_config *gconf;
 366
 367          gconf = CALLOC_STRUCT(egl_g3d_config);
 368          if (gconf) {
 369             _eglInitConfig(&gconf->base, dpy, id);
 370             if (!egl_g3d_init_config(drv, dpy, &gconf->base,
 371                      native_configs[i], depth_stencil_formats[j])) {
 372                FREE(gconf);
 373                break;
 374             }
 375
 376             _eglAddConfig(dpy, &gconf->base);
 377             id++;
 378          }
 379       }
 380    }
 381
 382    FREE(native_configs);
 383    return id;
 384 }
 385
 386 static void
 387 egl_g3d_invalid_surface(struct native_display *ndpy,
 388                         struct native_surface *nsurf,
 389                         unsigned int seq_num)
 390 {
 391    /* XXX not thread safe? */
 392    struct egl_g3d_surface *gsurf = egl_g3d_surface(nsurf->user_data);
 393    struct egl_g3d_context *gctx;
 394
 395    /*
 396     * Some functions such as egl_g3d_copy_buffers create a temporary native
 397     * surface.  There is no gsurf associated with it.
 398     */
 399    gctx = (gsurf) ? egl_g3d_context(gsurf->base.CurrentContext) : NULL;
 400    if (gctx)
 401       gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gsurf->stfbi);
 402 }
 403
 404 static struct pipe_screen *
 405 egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
 406 {
 407    _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
 408    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 409    return gdpy->loader->create_drm_screen(name, fd);
 410 }
 411
 412 static struct pipe_screen *
 413 egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
 414 {
 415    _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
 416    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 417    return gdpy->loader->create_sw_screen(ws);
 418 }
 419
 420 static struct native_event_handler egl_g3d_native_event_handler = {
 421    egl_g3d_invalid_surface,
 422    egl_g3d_new_drm_screen,
 423    egl_g3d_new_sw_screen
 424 };
 425
 426 static void
 427 egl_g3d_free_config(void *conf)
 428 {
 429    struct egl_g3d_config *gconf = egl_g3d_config((_EGLConfig *) conf);
 430    FREE(gconf);
 431 }
 432
 433 static void
 434 egl_g3d_free_screen(void *scr)
 435 {
 436 #ifdef EGL_MESA_screen_surface
 437    struct egl_g3d_screen *gscr = egl_g3d_screen((_EGLScreen *) scr);
 438    FREE(gscr->native_modes);
 439    FREE(gscr);
 440 #endif
 441 }
 442
 443 static EGLBoolean
 444 egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
 445 {
 446    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 447
 448    _eglReleaseDisplayResources(drv, dpy);
 449
 450    if (gdpy->pipe)
 451       gdpy->pipe->destroy(gdpy->pipe);
 452
 453    if (dpy->Configs) {
 454       _eglDestroyArray(dpy->Configs, egl_g3d_free_config);
 455       dpy->Configs = NULL;
 456    }
 457    if (dpy->Screens) {
 458       _eglDestroyArray(dpy->Screens, egl_g3d_free_screen);
 459       dpy->Screens = NULL;
 460    }
 461
 462    _eglCleanupDisplay(dpy);
 463
 464    if (gdpy->smapi)
 465       egl_g3d_destroy_st_manager(gdpy->smapi);
 466
 467    if (gdpy->native)
 468       gdpy->native->destroy(gdpy->native);
 469
 470    FREE(gdpy);
 471    dpy->DriverData = NULL;
 472
 473    return EGL_TRUE;
 474 }
 475
 476 static EGLBoolean
 477 egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy,
 478                    EGLint *major, EGLint *minor)
 479 {
 480    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 481    struct egl_g3d_display *gdpy;
 482    const struct native_platform *nplat;
 483
 484    nplat = egl_g3d_get_platform(drv, dpy->Platform);
 485    if (!nplat)
 486       return EGL_FALSE;
 487
 488    gdpy = CALLOC_STRUCT(egl_g3d_display);
 489    if (!gdpy) {
 490       _eglError(EGL_BAD_ALLOC, "eglInitialize");
 491       goto fail;
 492    }
 493    gdpy->loader = gdrv->loader;
 494    dpy->DriverData = gdpy;
 495
 496    _eglLog(_EGL_INFO, "use %s for display %p", nplat->name, dpy->PlatformDisplay);
 497    gdpy->native = nplat->create_display(dpy->PlatformDisplay,
 498          &egl_g3d_native_event_handler, (void *) dpy);
 499    if (!gdpy->native) {
 500       _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
 501       goto fail;
 502    }
 503
 504    if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_DEFAULT_MASK)
 505       dpy->ClientAPIsMask |= EGL_OPENGL_BIT;
 506    if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES1_MASK)
 507       dpy->ClientAPIsMask |= EGL_OPENGL_ES_BIT;
 508    if (gdpy->loader->profile_masks[ST_API_OPENGL] & ST_PROFILE_OPENGL_ES2_MASK)
 509       dpy->ClientAPIsMask |= EGL_OPENGL_ES2_BIT;
 510    if (gdpy->loader->profile_masks[ST_API_OPENVG] & ST_PROFILE_DEFAULT_MASK)
 511       dpy->ClientAPIsMask |= EGL_OPENVG_BIT;
 512
 513    gdpy->smapi = egl_g3d_create_st_manager(dpy);
 514    if (!gdpy->smapi) {
 515       _eglError(EGL_NOT_INITIALIZED,
 516             "eglInitialize(failed to create st manager)");
 517       goto fail;
 518    }
 519
 520 #ifdef EGL_MESA_screen_surface
 521    /* enable MESA_screen_surface before adding (and validating) configs */
 522    if (gdpy->native->modeset) {
 523       dpy->Extensions.MESA_screen_surface = EGL_TRUE;
 524       egl_g3d_add_screens(drv, dpy);
 525    }
 526 #endif
 527
 528    dpy->Extensions.KHR_image_base = EGL_TRUE;
 529    if (gdpy->native->get_param(gdpy->native, NATIVE_PARAM_USE_NATIVE_BUFFER))
 530       dpy->Extensions.KHR_image_pixmap = EGL_TRUE;
 531
 532    dpy->Extensions.KHR_reusable_sync = EGL_TRUE;
 533    dpy->Extensions.KHR_fence_sync = EGL_TRUE;
 534
 535    dpy->Extensions.KHR_surfaceless_gles1 = EGL_TRUE;
 536    dpy->Extensions.KHR_surfaceless_gles2 = EGL_TRUE;
 537    dpy->Extensions.KHR_surfaceless_opengl = EGL_TRUE;
 538
 539    if (dpy->Platform == _EGL_PLATFORM_DRM) {
 540       dpy->Extensions.MESA_drm_display = EGL_TRUE;
 541       dpy->Extensions.MESA_drm_image = EGL_TRUE;
 542    }
 543
 544    if (egl_g3d_add_configs(drv, dpy, 1) == 1) {
 545       _eglError(EGL_NOT_INITIALIZED, "eglInitialize(unable to add configs)");
 546       goto fail;
 547    }
 548
 549    *major = 1;
 550    *minor = 4;
 551
 552    return EGL_TRUE;
 553
 554 fail:
 555    if (gdpy)
 556       egl_g3d_terminate(drv, dpy);
 557    return EGL_FALSE;
 558 }
 559
 560 static _EGLProc
 561 egl_g3d_get_proc_address(_EGLDriver *drv, const char *procname)
 562 {
 563    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 564    struct st_api *stapi = NULL;
 565
 566    if (procname && procname[0] == 'v' && procname[1] == 'g')
 567       stapi = gdrv->loader->get_st_api(ST_API_OPENVG);
 568    else if (procname && procname[0] == 'g' && procname[1] == 'l')
 569       stapi = gdrv->loader->get_st_api(ST_API_OPENGL);
 570
 571    return (_EGLProc) ((stapi) ?
 572          stapi->get_proc_address(stapi, procname) : NULL);
 573 }
 574
 575 static EGLint
 576 egl_g3d_probe(_EGLDriver *drv, _EGLDisplay *dpy)
 577 {
 578    return (egl_g3d_get_platform(drv, dpy->Platform)) ? 90 : 0;
 579 }
 580
 581 _EGLDriver *
 582 egl_g3d_create_driver(const struct egl_g3d_loader *loader)
 583 {
 584    struct egl_g3d_driver *gdrv;
 585
 586    gdrv = CALLOC_STRUCT(egl_g3d_driver);
 587    if (!gdrv)
 588       return NULL;
 589
 590    gdrv->loader = loader;
 591
 592    egl_g3d_init_driver_api(&gdrv->base);
 593    gdrv->base.API.Initialize = egl_g3d_initialize;
 594    gdrv->base.API.Terminate = egl_g3d_terminate;
 595    gdrv->base.API.GetProcAddress = egl_g3d_get_proc_address;
 596
 597    gdrv->base.Probe = egl_g3d_probe;
 598
 599    /* to be filled by the caller */
 600    gdrv->base.Name = NULL;
 601    gdrv->base.Unload = NULL;
 602
 603    return &gdrv->base;
 604 }
 605
 606 void
 607 egl_g3d_destroy_driver(_EGLDriver *drv)
 608 {
 609    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 610    FREE(gdrv);
 611 }