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 static void
  42 egl_g3d_invalid_surface(struct native_display *ndpy,
  43                         struct native_surface *nsurf,
  44                         unsigned int seq_num)
  45 {
  46    /* XXX not thread safe? */
  47    struct egl_g3d_surface *gsurf = egl_g3d_surface(nsurf->user_data);
  48    struct egl_g3d_context *gctx;
  49
  50    /*
  51     * Some functions such as egl_g3d_copy_buffers create a temporary native
  52     * surface.  There is no gsurf associated with it.
  53     */
  54    gctx = (gsurf) ? egl_g3d_context(gsurf->base.CurrentContext) : NULL;
  55    if (gctx)
  56       gctx->stctxi->notify_invalid_framebuffer(gctx->stctxi, gsurf->stfbi);
  57 }
  58
  59 static struct pipe_screen *
  60 egl_g3d_new_drm_screen(struct native_display *ndpy, const char *name, int fd)
  61 {
  62    _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
  63    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  64    return gdpy->loader->create_drm_screen(name, fd);
  65 }
  66
  67 static struct pipe_screen *
  68 egl_g3d_new_sw_screen(struct native_display *ndpy, struct sw_winsys *ws)
  69 {
  70    _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
  71    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  72    return gdpy->loader->create_sw_screen(ws);
  73 }
  74
  75 static struct pipe_resource *
  76 egl_g3d_lookup_egl_image(struct native_display *ndpy, void *egl_image)
  77 {
  78    _EGLDisplay *dpy = (_EGLDisplay *) ndpy->user_data;
  79    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
  80    struct st_egl_image img;
  81    struct pipe_resource *resource = NULL;
  82
  83    memset(&img, 0, sizeof(img));
  84    if (gdpy->smapi->get_egl_image(gdpy->smapi, egl_image, &img))
  85       resource = img.texture;
  86
  87    return resource;
  88 }
  89
  90 static struct native_event_handler egl_g3d_native_event_handler = {
  91    egl_g3d_invalid_surface,
  92    egl_g3d_new_drm_screen,
  93    egl_g3d_new_sw_screen,
  94    egl_g3d_lookup_egl_image
  95 };
  96
  97 /**
  98  * Get the native platform.
  99  */
 100 static const struct native_platform *
 101 egl_g3d_get_platform(_EGLDriver *drv, _EGLPlatformType plat)
 102 {
 103    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 104
 105    if (!gdrv->platforms[plat]) {
 106       const char *plat_name = NULL;
 107       const struct native_platform *nplat = NULL;
 108
 109       switch (plat) {
 110       case _EGL_PLATFORM_WINDOWS:
 111          plat_name = "Windows";
 112 #ifdef HAVE_GDI_BACKEND
 113          nplat = native_get_gdi_platform();
 114 #endif
 115          break;
 116       case _EGL_PLATFORM_X11:
 117          plat_name = "X11";
 118 #ifdef HAVE_X11_BACKEND
 119          nplat = native_get_x11_platform();
 120 #endif
 121          break;
 122       case _EGL_PLATFORM_WAYLAND:
 123          plat_name = "wayland";
 124 #ifdef HAVE_WAYLAND_BACKEND
 125          nplat = native_get_wayland_platform();
 126 #endif
 127          break;
 128       case _EGL_PLATFORM_DRM:
 129          plat_name = "DRM";
 130 #ifdef HAVE_DRM_BACKEND
 131          nplat = native_get_drm_platform();
 132 #endif
 133          break;
 134       case _EGL_PLATFORM_FBDEV:
 135          plat_name = "FBDEV";
 136 #ifdef HAVE_FBDEV_BACKEND
 137          nplat = native_get_fbdev_platform();
 138 #endif
 139          break;
 140       default:
 141          break;
 142       }
 143
 144       if (nplat)
 145          nplat->set_event_handler(&egl_g3d_native_event_handler);
 146       else
 147          _eglLog(_EGL_WARNING, "unsupported platform %s", plat_name);
 148
 149       gdrv->platforms[plat] = nplat;
 150    }
 151
 152    return gdrv->platforms[plat];
 153 }
 154
 155 #ifdef EGL_MESA_screen_surface
 156
 157 static void
 158 egl_g3d_add_screens(_EGLDriver *drv, _EGLDisplay *dpy)
 159 {
 160    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 161    const struct native_connector **native_connectors;
 162    EGLint num_connectors, i;
 163
 164    native_connectors =
 165       gdpy->native->modeset->get_connectors(gdpy->native, &num_connectors, NULL);
 166    if (!num_connectors) {
 167       if (native_connectors)
 168          FREE(native_connectors);
 169       return;
 170    }
 171
 172    for (i = 0; i < num_connectors; i++) {
 173       const struct native_connector *nconn = native_connectors[i];
 174       struct egl_g3d_screen *gscr;
 175       const struct native_mode **native_modes;
 176       EGLint num_modes, j;
 177
 178       /* TODO support for hotplug */
 179       native_modes =
 180          gdpy->native->modeset->get_modes(gdpy->native, nconn, &num_modes);
 181       if (!num_modes) {
 182          if (native_modes)
 183             FREE(native_modes);
 184          continue;
 185       }
 186
 187       gscr = CALLOC_STRUCT(egl_g3d_screen);
 188       if (!gscr) {
 189          FREE(native_modes);
 190          continue;
 191       }
 192
 193       _eglInitScreen(&gscr->base, dpy, num_modes);
 194       for (j = 0; j < gscr->base.NumModes; j++) {
 195          const struct native_mode *nmode = native_modes[j];
 196          _EGLMode *mode = &gscr->base.Modes[j];
 197
 198          mode->Width = nmode->width;
 199          mode->Height = nmode->height;
 200          mode->RefreshRate = nmode->refresh_rate;
 201          mode->Optimal = EGL_FALSE;
 202          mode->Interlaced = EGL_FALSE;
 203          /* no need to strdup() */
 204          mode->Name = nmode->desc;
 205       }
 206
 207       gscr->native = nconn;
 208       gscr->native_modes = native_modes;
 209
 210       _eglLinkScreen(&gscr->base);
 211    }
 212
 213    FREE(native_connectors);
 214 }
 215
 216 #endif /* EGL_MESA_screen_surface */
 217
 218 /**
 219  * Initialize and validate the EGL config attributes.
 220  */
 221 static EGLBoolean
 222 init_config_attributes(_EGLConfig *conf, const struct native_config *nconf,
 223                        EGLint api_mask, enum pipe_format depth_stencil_format,
 224                        EGLBoolean preserve_buffer, EGLint max_swap_interval)
 225 {
 226    uint rgba[4], depth_stencil[2], buffer_size;
 227    EGLint surface_type;
 228    EGLint i;
 229
 230    /* get the color and depth/stencil component sizes */
 231    assert(nconf->color_format != PIPE_FORMAT_NONE);
 232    buffer_size = 0;
 233    for (i = 0; i < 4; i++) {
 234       rgba[i] = util_format_get_component_bits(nconf->color_format,
 235             UTIL_FORMAT_COLORSPACE_RGB, i);
 236       buffer_size += rgba[i];
 237    }
 238    for (i = 0; i < 2; i++) {
 239       if (depth_stencil_format != PIPE_FORMAT_NONE) {
 240          depth_stencil[i] =
 241             util_format_get_component_bits(depth_stencil_format,
 242                UTIL_FORMAT_COLORSPACE_ZS, i);
 243       }
 244       else {
 245          depth_stencil[i] = 0;
 246       }
 247    }
 248
 249    surface_type = 0x0;
 250    /* pixmap surfaces should be EGL_SINGLE_BUFFER */
 251    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT)) {
 252       if (nconf->pixmap_bit)
 253          surface_type |= EGL_PIXMAP_BIT;
 254    }
 255    /* the others surfaces should be EGL_BACK_BUFFER (or settable) */
 256    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT)) {
 257       if (nconf->window_bit)
 258          surface_type |= EGL_WINDOW_BIT;
 259 #ifdef EGL_MESA_screen_surface
 260       if (nconf->scanout_bit)
 261          surface_type |= EGL_SCREEN_BIT_MESA;
 262 #endif
 263       surface_type |= EGL_PBUFFER_BIT;
 264    }
 265
 266    conf->Conformant = api_mask;
 267    conf->RenderableType = api_mask;
 268
 269    conf->RedSize = rgba[0];
 270    conf->GreenSize = rgba[1];
 271    conf->BlueSize = rgba[2];
 272    conf->AlphaSize = rgba[3];
 273    conf->BufferSize = buffer_size;
 274
 275    conf->DepthSize = depth_stencil[0];
 276    conf->StencilSize = depth_stencil[1];
 277
 278    /* st/vega will allocate the mask on demand */
 279    if (api_mask & EGL_OPENVG_BIT)
 280       conf->AlphaMaskSize = 8;
 281
 282    conf->SurfaceType = surface_type;
 283
 284    conf->NativeRenderable = EGL_TRUE;
 285    if (surface_type & EGL_WINDOW_BIT) {
 286       conf->NativeVisualID = nconf->native_visual_id;
 287       conf->NativeVisualType = nconf->native_visual_type;
 288    }
 289
 290    if (surface_type & EGL_PBUFFER_BIT) {
 291       conf->BindToTextureRGB = EGL_TRUE;
 292       if (rgba[3])
 293          conf->BindToTextureRGBA = EGL_TRUE;
 294
 295       conf->MaxPbufferWidth = 4096;
 296       conf->MaxPbufferHeight = 4096;
 297       conf->MaxPbufferPixels = 4096 * 4096;
 298    }
 299
 300    conf->Level = nconf->level;
 301
 302    if (nconf->transparent_rgb) {
 303       conf->TransparentType = EGL_TRANSPARENT_RGB;
 304       conf->TransparentRedValue = nconf->transparent_rgb_values[0];
 305       conf->TransparentGreenValue = nconf->transparent_rgb_values[1];
 306       conf->TransparentBlueValue = nconf->transparent_rgb_values[2];
 307    }
 308
 309    conf->MinSwapInterval = 0;
 310    conf->MaxSwapInterval = max_swap_interval;
 311    if (preserve_buffer)
 312       conf->SurfaceType |= EGL_SWAP_BEHAVIOR_PRESERVED_BIT;
 313
 314    return _eglValidateConfig(conf, EGL_FALSE);
 315 }
 316
 317 /**
 318  * Initialize an EGL config from the native config.
 319  */
 320 static EGLBoolean
 321 egl_g3d_init_config(_EGLDriver *drv, _EGLDisplay *dpy,
 322                     _EGLConfig *conf, const struct native_config *nconf,
 323                     enum pipe_format depth_stencil_format,
 324                     int preserve_buffer, int max_swap_interval)
 325 {
 326    struct egl_g3d_config *gconf = egl_g3d_config(conf);
 327    EGLint buffer_mask;
 328    EGLBoolean valid;
 329
 330    buffer_mask = 0x0;
 331    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_LEFT))
 332       buffer_mask |= ST_ATTACHMENT_FRONT_LEFT_MASK;
 333    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_LEFT))
 334       buffer_mask |= ST_ATTACHMENT_BACK_LEFT_MASK;
 335    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_FRONT_RIGHT))
 336       buffer_mask |= ST_ATTACHMENT_FRONT_RIGHT_MASK;
 337    if (nconf->buffer_mask & (1 << NATIVE_ATTACHMENT_BACK_RIGHT))
 338       buffer_mask |= ST_ATTACHMENT_BACK_RIGHT_MASK;
 339
 340    gconf->stvis.buffer_mask = buffer_mask;
 341    gconf->stvis.color_format = nconf->color_format;
 342    gconf->stvis.depth_stencil_format = depth_stencil_format;
 343    gconf->stvis.accum_format = PIPE_FORMAT_NONE;
 344    gconf->stvis.samples = 0;
 345
 346    /* will be overridden per surface */
 347    gconf->stvis.render_buffer = (buffer_mask & ST_ATTACHMENT_BACK_LEFT_MASK) ?
 348       ST_ATTACHMENT_BACK_LEFT : ST_ATTACHMENT_FRONT_LEFT;
 349
 350    valid = init_config_attributes(&gconf->base,
 351          nconf, dpy->ClientAPIs, depth_stencil_format,
 352          preserve_buffer, max_swap_interval);
 353    if (!valid) {
 354       _eglLog(_EGL_DEBUG, "skip invalid config 0x%x", nconf->native_visual_id);
 355       return EGL_FALSE;
 356    }
 357
 358    gconf->native = nconf;
 359
 360    return EGL_TRUE;
 361 }
 362
 363 /**
 364  * Get all interested depth/stencil formats of a display.
 365  */
 366 static EGLint
 367 egl_g3d_fill_depth_stencil_formats(_EGLDisplay *dpy,
 368                                    enum pipe_format formats[8])
 369 {
 370    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 371    struct pipe_screen *screen = gdpy->native->screen;
 372    const EGLint candidates[] = {
 373       1, PIPE_FORMAT_Z16_UNORM,
 374       1, PIPE_FORMAT_Z32_UNORM,
 375       2, PIPE_FORMAT_Z24_UNORM_S8_USCALED, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
 376       2, PIPE_FORMAT_Z24X8_UNORM, PIPE_FORMAT_X8Z24_UNORM,
 377       0
 378    };
 379    const EGLint *fmt = candidates;
 380    EGLint count;
 381
 382    count = 0;
 383    formats[count++] = PIPE_FORMAT_NONE;
 384
 385    while (*fmt) {
 386       EGLint i, n = *fmt++;
 387
 388       /* pick the first supported format */
 389       for (i = 0; i < n; i++) {
 390          if (screen->is_format_supported(screen, fmt[i],
 391                   PIPE_TEXTURE_2D, 0, PIPE_BIND_DEPTH_STENCIL)) {
 392             formats[count++] = fmt[i];
 393             break;
 394          }
 395       }
 396
 397       fmt += n;
 398    }
 399
 400    return count;
 401 }
 402
 403 /**
 404  * Add configs to display and return the next config ID.
 405  */
 406 static EGLint
 407 egl_g3d_add_configs(_EGLDriver *drv, _EGLDisplay *dpy, EGLint id)
 408 {
 409    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 410    const struct native_config **native_configs;
 411    enum pipe_format depth_stencil_formats[8];
 412    int num_formats, num_configs, i, j;
 413    int preserve_buffer, max_swap_interval;
 414
 415    native_configs = gdpy->native->get_configs(gdpy->native, &num_configs);
 416    if (!num_configs) {
 417       if (native_configs)
 418          FREE(native_configs);
 419       return id;
 420    }
 421
 422    preserve_buffer =
 423       gdpy->native->get_param(gdpy->native, NATIVE_PARAM_PRESERVE_BUFFER);
 424    max_swap_interval =
 425       gdpy->native->get_param(gdpy->native, NATIVE_PARAM_MAX_SWAP_INTERVAL);
 426
 427    num_formats = egl_g3d_fill_depth_stencil_formats(dpy,
 428          depth_stencil_formats);
 429
 430    for (i = 0; i < num_configs; i++) {
 431       for (j = 0; j < num_formats; j++) {
 432          struct egl_g3d_config *gconf;
 433
 434          gconf = CALLOC_STRUCT(egl_g3d_config);
 435          if (gconf) {
 436             _eglInitConfig(&gconf->base, dpy, id);
 437             if (!egl_g3d_init_config(drv, dpy, &gconf->base,
 438                      native_configs[i], depth_stencil_formats[j],
 439                      preserve_buffer, max_swap_interval)) {
 440                FREE(gconf);
 441                break;
 442             }
 443
 444             _eglLinkConfig(&gconf->base);
 445             id++;
 446          }
 447       }
 448    }
 449
 450    FREE(native_configs);
 451    return id;
 452 }
 453
 454 static void
 455 egl_g3d_free_config(void *conf)
 456 {
 457    struct egl_g3d_config *gconf = egl_g3d_config((_EGLConfig *) conf);
 458    FREE(gconf);
 459 }
 460
 461 static void
 462 egl_g3d_free_screen(void *scr)
 463 {
 464 #ifdef EGL_MESA_screen_surface
 465    struct egl_g3d_screen *gscr = egl_g3d_screen((_EGLScreen *) scr);
 466    FREE(gscr->native_modes);
 467    FREE(gscr);
 468 #endif
 469 }
 470
 471 static EGLBoolean
 472 egl_g3d_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
 473 {
 474    struct egl_g3d_display *gdpy = egl_g3d_display(dpy);
 475
 476    _eglReleaseDisplayResources(drv, dpy);
 477
 478    if (dpy->Configs) {
 479       _eglDestroyArray(dpy->Configs, egl_g3d_free_config);
 480       dpy->Configs = NULL;
 481    }
 482    if (dpy->Screens) {
 483       _eglDestroyArray(dpy->Screens, egl_g3d_free_screen);
 484       dpy->Screens = NULL;
 485    }
 486
 487    _eglCleanupDisplay(dpy);
 488
 489    if (gdpy->smapi)
 490       egl_g3d_destroy_st_manager(gdpy->smapi);
 491
 492    if (gdpy->native)
 493       gdpy->native->destroy(gdpy->native);
 494
 495    FREE(gdpy);
 496    dpy->DriverData = NULL;
 497
 498    return EGL_TRUE;
 499 }
 500
 501 static EGLBoolean
 502 egl_g3d_initialize(_EGLDriver *drv, _EGLDisplay *dpy)
 503 {
 504    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 505    struct egl_g3d_display *gdpy;
 506    const struct native_platform *nplat;
 507
 508    nplat = egl_g3d_get_platform(drv, dpy->Platform);
 509    if (!nplat)
 510       return EGL_FALSE;
 511
 512    if (dpy->Options.TestOnly)
 513       return EGL_TRUE;
 514
 515    gdpy = CALLOC_STRUCT(egl_g3d_display);
 516    if (!gdpy) {
 517       _eglError(EGL_BAD_ALLOC, "eglInitialize");
 518       goto fail;
 519    }
 520    gdpy->loader = gdrv->loader;
 521    dpy->DriverData = gdpy;
 522
 523    _eglLog(_EGL_INFO, "use %s for display %p", nplat->name, dpy->PlatformDisplay);
 524    gdpy->native = nplat->create_display(dpy->PlatformDisplay,
 525          dpy->Options.UseFallback, (void *) dpy);
 526    if (!gdpy->native) {
 527       _eglError(EGL_NOT_INITIALIZED, "eglInitialize(no usable display)");
 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
 590 fail:
 591    if (gdpy)
 592       egl_g3d_terminate(drv, dpy);
 593    return EGL_FALSE;
 594 }
 595
 596 static _EGLProc
 597 egl_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 *
 612 egl_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
 634 void
 635 egl_g3d_destroy_driver(_EGLDriver *drv)
 636 {
 637    struct egl_g3d_driver *gdrv = egl_g3d_driver(drv);
 638    FREE(gdrv);
 639 }