/* * Copyright © 2011 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. * * Authors: * Kristian Høgsberg */ #include #include #include #include #include #include #include #include #include #include #include "egl_dri2.h" #include "egl_dri2_fallbacks.h" #include "loader.h" static struct gbm_bo * lock_front_buffer(struct gbm_surface *_surf) { struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf; struct dri2_egl_surface *dri2_surf = surf->dri_private; struct gbm_dri_device *device = (struct gbm_dri_device *) _surf->gbm; struct gbm_bo *bo; if (dri2_surf->current == NULL) { _eglError(EGL_BAD_SURFACE, "no front buffer"); return NULL; } bo = dri2_surf->current->bo; if (device->dri2) { dri2_surf->current->locked = true; dri2_surf->current = NULL; } return bo; } static void release_buffer(struct gbm_surface *_surf, struct gbm_bo *bo) { struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf; struct dri2_egl_surface *dri2_surf = surf->dri_private; for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) { if (dri2_surf->color_buffers[i].bo == bo) { dri2_surf->color_buffers[i].locked = false; break; } } } static int has_free_buffers(struct gbm_surface *_surf) { struct gbm_dri_surface *surf = (struct gbm_dri_surface *) _surf; struct dri2_egl_surface *dri2_surf = surf->dri_private; for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) if (!dri2_surf->color_buffers[i].locked) return 1; return 0; } static bool dri2_drm_config_is_compatible(struct dri2_egl_display *dri2_dpy, const __DRIconfig *config, struct gbm_surface *surface) { const struct gbm_dri_visual *visual = NULL; unsigned int red, green, blue, alpha; int i; /* Check that the EGLConfig being used to render to the surface is * compatible with the surface format. Since mixing ARGB and XRGB of * otherwise-compatible formats is relatively common, explicitly allow * this. */ dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_RED_MASK, &red); dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_GREEN_MASK, &green); dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_BLUE_MASK, &blue); dri2_dpy->core->getConfigAttrib(config, __DRI_ATTRIB_ALPHA_MASK, &alpha); for (i = 0; i < dri2_dpy->gbm_dri->num_visuals; i++) { visual = &dri2_dpy->gbm_dri->visual_table[i]; if (visual->gbm_format == surface->format) break; } if (i == dri2_dpy->gbm_dri->num_visuals) return false; if (red != visual->rgba_masks.red || green != visual->rgba_masks.green || blue != visual->rgba_masks.blue || (alpha && visual->rgba_masks.alpha && alpha != visual->rgba_masks.alpha)) { return false; } return true; } static _EGLSurface * dri2_drm_create_window_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf, void *native_surface, const EGLint *attrib_list) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); struct dri2_egl_config *dri2_conf = dri2_egl_config(conf); struct dri2_egl_surface *dri2_surf; struct gbm_surface *surface = native_surface; struct gbm_dri_surface *surf; const __DRIconfig *config; (void) drv; dri2_surf = calloc(1, sizeof *dri2_surf); if (!dri2_surf) { _eglError(EGL_BAD_ALLOC, "dri2_create_surface"); return NULL; } if (!dri2_init_surface(&dri2_surf->base, disp, EGL_WINDOW_BIT, conf, attrib_list, false)) goto cleanup_surf; config = dri2_get_dri_config(dri2_conf, EGL_WINDOW_BIT, dri2_surf->base.GLColorspace); if (!dri2_drm_config_is_compatible(dri2_dpy, config, surface)) { _eglError(EGL_BAD_MATCH, "EGL config not compatible with GBM format"); goto cleanup_surf; } surf = gbm_dri_surface(surface); dri2_surf->gbm_surf = surf; dri2_surf->base.Width = surf->base.width; dri2_surf->base.Height = surf->base.height; surf->dri_private = dri2_surf; if (dri2_dpy->dri2) { dri2_surf->dri_drawable = dri2_dpy->dri2->createNewDrawable(dri2_dpy->dri_screen, config, dri2_surf->gbm_surf); } else { assert(dri2_dpy->swrast != NULL); dri2_surf->dri_drawable = dri2_dpy->swrast->createNewDrawable(dri2_dpy->dri_screen, config, dri2_surf->gbm_surf); } if (dri2_surf->dri_drawable == NULL) { _eglError(EGL_BAD_ALLOC, "createNewDrawable()"); goto cleanup_surf; } return &dri2_surf->base; cleanup_surf: free(dri2_surf); return NULL; } static _EGLSurface * dri2_drm_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLConfig *conf, void *native_window, const EGLint *attrib_list) { /* From the EGL_MESA_platform_gbm spec, version 5: * * It is not valid to call eglCreatePlatformPixmapSurfaceEXT with a * that belongs to the GBM platform. Any such call fails and generates * EGL_BAD_PARAMETER. */ _eglError(EGL_BAD_PARAMETER, "cannot create EGL pixmap surfaces on GBM"); return NULL; } static EGLBoolean dri2_drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf); dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable); for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) { if (dri2_surf->color_buffers[i].bo) gbm_bo_destroy(dri2_surf->color_buffers[i].bo); } dri2_egl_surface_free_local_buffers(dri2_surf); dri2_fini_surface(surf); free(surf); return EGL_TRUE; } static int get_back_bo(struct dri2_egl_surface *dri2_surf) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display); struct gbm_dri_surface *surf = dri2_surf->gbm_surf; int age = 0; if (dri2_surf->back == NULL) { for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) { if (!dri2_surf->color_buffers[i].locked && dri2_surf->color_buffers[i].age >= age) { dri2_surf->back = &dri2_surf->color_buffers[i]; age = dri2_surf->color_buffers[i].age; } } } if (dri2_surf->back == NULL) return -1; if (dri2_surf->back->bo == NULL) { if (surf->base.modifiers) dri2_surf->back->bo = gbm_bo_create_with_modifiers(&dri2_dpy->gbm_dri->base, surf->base.width, surf->base.height, surf->base.format, surf->base.modifiers, surf->base.count); else dri2_surf->back->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base, surf->base.width, surf->base.height, surf->base.format, surf->base.flags); } if (dri2_surf->back->bo == NULL) return -1; return 0; } static int get_swrast_front_bo(struct dri2_egl_surface *dri2_surf) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display); struct gbm_dri_surface *surf = dri2_surf->gbm_surf; if (dri2_surf->current == NULL) { assert(!dri2_surf->color_buffers[0].locked); dri2_surf->current = &dri2_surf->color_buffers[0]; } if (dri2_surf->current->bo == NULL) dri2_surf->current->bo = gbm_bo_create(&dri2_dpy->gbm_dri->base, surf->base.width, surf->base.height, surf->base.format, surf->base.flags); if (dri2_surf->current->bo == NULL) return -1; return 0; } static void back_bo_to_dri_buffer(struct dri2_egl_surface *dri2_surf, __DRIbuffer *buffer) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(dri2_surf->base.Resource.Display); struct gbm_dri_bo *bo; int name, pitch; bo = (struct gbm_dri_bo *) dri2_surf->back->bo; dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_NAME, &name); dri2_dpy->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &pitch); buffer->attachment = __DRI_BUFFER_BACK_LEFT; buffer->name = name; buffer->pitch = pitch; buffer->cpp = 4; buffer->flags = 0; } static __DRIbuffer * dri2_drm_get_buffers_with_format(__DRIdrawable *driDrawable, int *width, int *height, unsigned int *attachments, int count, int *out_count, void *loaderPrivate) { struct dri2_egl_surface *dri2_surf = loaderPrivate; int i, j; for (i = 0, j = 0; i < 2 * count; i += 2, j++) { __DRIbuffer *local; assert(attachments[i] < __DRI_BUFFER_COUNT); assert(j < ARRAY_SIZE(dri2_surf->buffers)); switch (attachments[i]) { case __DRI_BUFFER_BACK_LEFT: if (get_back_bo(dri2_surf) < 0) { _eglError(EGL_BAD_ALLOC, "failed to allocate color buffer"); return NULL; } back_bo_to_dri_buffer(dri2_surf, &dri2_surf->buffers[j]); break; default: local = dri2_egl_surface_alloc_local_buffer(dri2_surf, attachments[i], attachments[i + 1]); if (!local) { _eglError(EGL_BAD_ALLOC, "failed to allocate local buffer"); return NULL; } dri2_surf->buffers[j] = *local; break; } } *out_count = j; if (j == 0) return NULL; *width = dri2_surf->base.Width; *height = dri2_surf->base.Height; return dri2_surf->buffers; } static __DRIbuffer * dri2_drm_get_buffers(__DRIdrawable * driDrawable, int *width, int *height, unsigned int *attachments, int count, int *out_count, void *loaderPrivate) { unsigned int *attachments_with_format; __DRIbuffer *buffer; const unsigned int format = 32; attachments_with_format = calloc(count, 2 * sizeof(unsigned int)); if (!attachments_with_format) { *out_count = 0; return NULL; } for (int i = 0; i < count; ++i) { attachments_with_format[2*i] = attachments[i]; attachments_with_format[2*i + 1] = format; } buffer = dri2_drm_get_buffers_with_format(driDrawable, width, height, attachments_with_format, count, out_count, loaderPrivate); free(attachments_with_format); return buffer; } static int dri2_drm_image_get_buffers(__DRIdrawable *driDrawable, unsigned int format, uint32_t *stamp, void *loaderPrivate, uint32_t buffer_mask, struct __DRIimageList *buffers) { struct dri2_egl_surface *dri2_surf = loaderPrivate; struct gbm_dri_bo *bo; if (get_back_bo(dri2_surf) < 0) return 0; bo = (struct gbm_dri_bo *) dri2_surf->back->bo; buffers->image_mask = __DRI_IMAGE_BUFFER_BACK; buffers->back = bo->image; return 1; } static void dri2_drm_flush_front_buffer(__DRIdrawable * driDrawable, void *loaderPrivate) { (void) driDrawable; (void) loaderPrivate; } static EGLBoolean dri2_drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw); if (!dri2_dpy->flush) { dri2_dpy->core->swapBuffers(dri2_surf->dri_drawable); return EGL_TRUE; } if (dri2_surf->base.Type == EGL_WINDOW_BIT) { if (dri2_surf->current) _eglError(EGL_BAD_SURFACE, "dri2_swap_buffers"); for (unsigned i = 0; i < ARRAY_SIZE(dri2_surf->color_buffers); i++) if (dri2_surf->color_buffers[i].age > 0) dri2_surf->color_buffers[i].age++; /* Make sure we have a back buffer in case we're swapping without * ever rendering. */ if (get_back_bo(dri2_surf) < 0) return _eglError(EGL_BAD_ALLOC, "dri2_swap_buffers"); dri2_surf->current = dri2_surf->back; dri2_surf->current->age = 1; dri2_surf->back = NULL; } dri2_flush_drawable_for_swapbuffers(disp, draw); dri2_dpy->flush->invalidate(dri2_surf->dri_drawable); return EGL_TRUE; } static EGLint dri2_drm_query_buffer_age(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surface) { struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surface); if (get_back_bo(dri2_surf) < 0) { _eglError(EGL_BAD_ALLOC, "dri2_query_buffer_age"); return -1; } return dri2_surf->back->age; } static _EGLImage * dri2_drm_create_image_khr_pixmap(_EGLDisplay *disp, _EGLContext *ctx, EGLClientBuffer buffer, const EGLint *attr_list) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); struct gbm_dri_bo *dri_bo = gbm_dri_bo((struct gbm_bo *) buffer); struct dri2_egl_image *dri2_img; dri2_img = malloc(sizeof *dri2_img); if (!dri2_img) { _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap"); return NULL; } _eglInitImage(&dri2_img->base, disp); dri2_img->dri_image = dri2_dpy->image->dupImage(dri_bo->image, dri2_img); if (dri2_img->dri_image == NULL) { free(dri2_img); _eglError(EGL_BAD_ALLOC, "dri2_create_image_khr_pixmap"); return NULL; } return &dri2_img->base; } static _EGLImage * dri2_drm_create_image_khr(_EGLDriver *drv, _EGLDisplay *disp, _EGLContext *ctx, EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list) { (void) drv; switch (target) { case EGL_NATIVE_PIXMAP_KHR: return dri2_drm_create_image_khr_pixmap(disp, ctx, buffer, attr_list); default: return dri2_create_image_khr(drv, disp, ctx, target, buffer, attr_list); } } static int dri2_drm_authenticate(_EGLDisplay *disp, uint32_t id) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); return drmAuthMagic(dri2_dpy->fd, id); } static void swrast_put_image2(__DRIdrawable *driDrawable, int op, int x, int y, int width, int height, int stride, char *data, void *loaderPrivate) { struct dri2_egl_surface *dri2_surf = loaderPrivate; int internal_stride; struct gbm_dri_bo *bo; uint32_t bpp; int x_bytes, width_bytes; char *src, *dst; if (op != __DRI_SWRAST_IMAGE_OP_DRAW && op != __DRI_SWRAST_IMAGE_OP_SWAP) return; if (get_swrast_front_bo(dri2_surf) < 0) return; bo = gbm_dri_bo(dri2_surf->current->bo); bpp = gbm_bo_get_bpp(&bo->base); if (bpp == 0) return; x_bytes = x * (bpp >> 3); width_bytes = width * (bpp >> 3); if (gbm_dri_bo_map_dumb(bo) == NULL) return; internal_stride = bo->base.stride; dst = bo->map + x_bytes + (y * internal_stride); src = data; for (int i = 0; i < height; i++) { memcpy(dst, src, width_bytes); dst += internal_stride; src += stride; } gbm_dri_bo_unmap_dumb(bo); } static void swrast_get_image(__DRIdrawable *driDrawable, int x, int y, int width, int height, char *data, void *loaderPrivate) { struct dri2_egl_surface *dri2_surf = loaderPrivate; int internal_stride, stride; struct gbm_dri_bo *bo; uint32_t bpp; int x_bytes, width_bytes; char *src, *dst; if (get_swrast_front_bo(dri2_surf) < 0) return; bo = gbm_dri_bo(dri2_surf->current->bo); bpp = gbm_bo_get_bpp(&bo->base); if (bpp == 0) return; x_bytes = x * (bpp >> 3); width_bytes = width * (bpp >> 3); internal_stride = bo->base.stride; stride = width_bytes; if (gbm_dri_bo_map_dumb(bo) == NULL) return; dst = data; src = bo->map + x_bytes + (y * internal_stride); for (int i = 0; i < height; i++) { memcpy(dst, src, width_bytes); dst += stride; src += internal_stride; } gbm_dri_bo_unmap_dumb(bo); } static EGLBoolean drm_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); const struct gbm_dri_visual *visuals = dri2_dpy->gbm_dri->visual_table; int num_visuals = dri2_dpy->gbm_dri->num_visuals; unsigned int format_count[num_visuals]; unsigned int config_count = 0; memset(format_count, 0, num_visuals * sizeof(unsigned int)); for (unsigned i = 0; dri2_dpy->driver_configs[i]; i++) { unsigned int red, green, blue, alpha; dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i], __DRI_ATTRIB_RED_MASK, &red); dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i], __DRI_ATTRIB_GREEN_MASK, &green); dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i], __DRI_ATTRIB_BLUE_MASK, &blue); dri2_dpy->core->getConfigAttrib(dri2_dpy->driver_configs[i], __DRI_ATTRIB_ALPHA_MASK, &alpha); for (unsigned j = 0; j < num_visuals; j++) { struct dri2_egl_config *dri2_conf; if (visuals[j].rgba_masks.red != red || visuals[j].rgba_masks.green != green || visuals[j].rgba_masks.blue != blue || visuals[j].rgba_masks.alpha != alpha) continue; const EGLint attr_list[] = { EGL_NATIVE_VISUAL_ID, visuals[j].gbm_format, EGL_NONE, }; dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i], config_count + 1, EGL_WINDOW_BIT, attr_list, NULL); if (dri2_conf) { if (dri2_conf->base.ConfigID == config_count + 1) config_count++; format_count[j]++; } } } for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) { if (!format_count[i]) { _eglLog(_EGL_DEBUG, "No DRI config supports native format 0x%x", visuals[i].gbm_format); } } return (config_count != 0); } static const struct dri2_egl_display_vtbl dri2_drm_display_vtbl = { .authenticate = dri2_drm_authenticate, .create_window_surface = dri2_drm_create_window_surface, .create_pixmap_surface = dri2_drm_create_pixmap_surface, .create_pbuffer_surface = dri2_fallback_create_pbuffer_surface, .destroy_surface = dri2_drm_destroy_surface, .create_image = dri2_drm_create_image_khr, .swap_buffers = dri2_drm_swap_buffers, .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage, .swap_buffers_region = dri2_fallback_swap_buffers_region, .set_damage_region = dri2_fallback_set_damage_region, .post_sub_buffer = dri2_fallback_post_sub_buffer, .copy_buffers = dri2_fallback_copy_buffers, .query_buffer_age = dri2_drm_query_buffer_age, .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image, .get_sync_values = dri2_fallback_get_sync_values, .get_dri_drawable = dri2_surface_get_dri_drawable, }; EGLBoolean dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp) { struct dri2_egl_display *dri2_dpy; struct gbm_device *gbm; const char *err; /* Not supported yet */ if (disp->Options.ForceSoftware) return EGL_FALSE; loader_set_logger(_eglLog); dri2_dpy = calloc(1, sizeof *dri2_dpy); if (!dri2_dpy) return _eglError(EGL_BAD_ALLOC, "eglInitialize"); dri2_dpy->fd = -1; disp->DriverData = (void *) dri2_dpy; gbm = disp->PlatformDisplay; if (gbm == NULL) { char buf[64]; int n = snprintf(buf, sizeof(buf), DRM_DEV_NAME, DRM_DIR_NAME, 0); if (n != -1 && n < sizeof(buf)) dri2_dpy->fd = loader_open_device(buf); gbm = gbm_create_device(dri2_dpy->fd); if (gbm == NULL) { err = "DRI2: failed to create gbm device"; goto cleanup; } dri2_dpy->own_device = true; } else { dri2_dpy->fd = fcntl(gbm_device_get_fd(gbm), F_DUPFD_CLOEXEC, 3); if (dri2_dpy->fd < 0) { err = "DRI2: failed to fcntl() existing gbm device"; goto cleanup; } } if (strcmp(gbm_device_get_backend_name(gbm), "drm") != 0) { err = "DRI2: gbm device using incorrect/incompatible backend"; goto cleanup; } dri2_dpy->gbm_dri = gbm_dri_device(gbm); dri2_dpy->driver_name = strdup(dri2_dpy->gbm_dri->driver_name); dri2_dpy->dri_screen = dri2_dpy->gbm_dri->screen; dri2_dpy->core = dri2_dpy->gbm_dri->core; dri2_dpy->dri2 = dri2_dpy->gbm_dri->dri2; dri2_dpy->swrast = dri2_dpy->gbm_dri->swrast; dri2_dpy->driver_configs = dri2_dpy->gbm_dri->driver_configs; dri2_dpy->gbm_dri->lookup_image = dri2_lookup_egl_image; dri2_dpy->gbm_dri->lookup_user_data = disp; dri2_dpy->gbm_dri->get_buffers = dri2_drm_get_buffers; dri2_dpy->gbm_dri->flush_front_buffer = dri2_drm_flush_front_buffer; dri2_dpy->gbm_dri->get_buffers_with_format = dri2_drm_get_buffers_with_format; dri2_dpy->gbm_dri->image_get_buffers = dri2_drm_image_get_buffers; dri2_dpy->gbm_dri->swrast_put_image2 = swrast_put_image2; dri2_dpy->gbm_dri->swrast_get_image = swrast_get_image; dri2_dpy->gbm_dri->base.surface_lock_front_buffer = lock_front_buffer; dri2_dpy->gbm_dri->base.surface_release_buffer = release_buffer; dri2_dpy->gbm_dri->base.surface_has_free_buffers = has_free_buffers; if (!dri2_setup_extensions(disp)) { err = "DRI2: failed to find required DRI extensions"; goto cleanup; } dri2_setup_screen(disp); if (!drm_add_configs_for_visuals(drv, disp)) { err = "DRI2: failed to add configs"; goto cleanup; } disp->Extensions.KHR_image_pixmap = EGL_TRUE; if (dri2_dpy->dri2) disp->Extensions.EXT_buffer_age = EGL_TRUE; #ifdef HAVE_WAYLAND_PLATFORM dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd); #endif dri2_set_WL_bind_wayland_display(drv, disp); /* Fill vtbl last to prevent accidentally calling virtual function during * initialization. */ dri2_dpy->vtbl = &dri2_drm_display_vtbl; return EGL_TRUE; cleanup: dri2_display_destroy(disp); return _eglError(EGL_NOT_INITIALIZED, err); } void dri2_teardown_drm(struct dri2_egl_display *dri2_dpy) { if (dri2_dpy->own_device) gbm_device_destroy(&dri2_dpy->gbm_dri->base); }