/* * 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: * Benjamin Franzke */ #include #include #include #include #include #include #include #include #include #include #include #include /* dri_interface needs GL types */ #include #include "gbm_driint.h" #include "gbmint.h" #include "loader.h" /* For importing wl_buffer */ #if HAVE_WAYLAND_PLATFORM #include "../../../egl/wayland/wayland-drm/wayland-drm.h" #endif static __DRIimage * dri_lookup_egl_image(__DRIscreen *screen, void *image, void *data) { struct gbm_dri_device *dri = data; if (dri->lookup_image == NULL) return NULL; return dri->lookup_image(screen, image, dri->lookup_user_data); } static __DRIbuffer * dri_get_buffers(__DRIdrawable * driDrawable, int *width, int *height, unsigned int *attachments, int count, int *out_count, void *data) { struct gbm_dri_surface *surf = data; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); if (dri->get_buffers == NULL) return NULL; return dri->get_buffers(driDrawable, width, height, attachments, count, out_count, surf->dri_private); } static void dri_flush_front_buffer(__DRIdrawable * driDrawable, void *data) { struct gbm_dri_surface *surf = data; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); if (dri->flush_front_buffer != NULL) dri->flush_front_buffer(driDrawable, surf->dri_private); } static __DRIbuffer * dri_get_buffers_with_format(__DRIdrawable * driDrawable, int *width, int *height, unsigned int *attachments, int count, int *out_count, void *data) { struct gbm_dri_surface *surf = data; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); if (dri->get_buffers_with_format == NULL) return NULL; return dri->get_buffers_with_format(driDrawable, width, height, attachments, count, out_count, surf->dri_private); } static int image_get_buffers(__DRIdrawable *driDrawable, unsigned int format, uint32_t *stamp, void *loaderPrivate, uint32_t buffer_mask, struct __DRIimageList *buffers) { struct gbm_dri_surface *surf = loaderPrivate; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); if (dri->image_get_buffers == NULL) return 0; return dri->image_get_buffers(driDrawable, format, stamp, surf->dri_private, buffer_mask, buffers); } static void swrast_get_drawable_info(__DRIdrawable *driDrawable, int *x, int *y, int *width, int *height, void *loaderPrivate) { struct gbm_dri_surface *surf = loaderPrivate; *x = 0; *y = 0; *width = surf->base.width; *height = surf->base.height; } static void swrast_put_image2(__DRIdrawable *driDrawable, int op, int x, int y, int width, int height, int stride, char *data, void *loaderPrivate) { struct gbm_dri_surface *surf = loaderPrivate; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); dri->swrast_put_image2(driDrawable, op, x, y, width, height, stride, data, surf->dri_private); } static void swrast_put_image(__DRIdrawable *driDrawable, int op, int x, int y, int width, int height, char *data, void *loaderPrivate) { swrast_put_image2(driDrawable, op, x, y, width, height, width * 4, data, loaderPrivate); } static void swrast_get_image(__DRIdrawable *driDrawable, int x, int y, int width, int height, char *data, void *loaderPrivate) { struct gbm_dri_surface *surf = loaderPrivate; struct gbm_dri_device *dri = gbm_dri_device(surf->base.gbm); dri->swrast_get_image(driDrawable, x, y, width, height, data, surf->dri_private); } static const __DRIuseInvalidateExtension use_invalidate = { .base = { __DRI_USE_INVALIDATE, 1 } }; static const __DRIimageLookupExtension image_lookup_extension = { .base = { __DRI_IMAGE_LOOKUP, 1 }, .lookupEGLImage = dri_lookup_egl_image }; static const __DRIdri2LoaderExtension dri2_loader_extension = { .base = { __DRI_DRI2_LOADER, 3 }, .getBuffers = dri_get_buffers, .flushFrontBuffer = dri_flush_front_buffer, .getBuffersWithFormat = dri_get_buffers_with_format, }; static const __DRIimageLoaderExtension image_loader_extension = { .base = { __DRI_IMAGE_LOADER, 1 }, .getBuffers = image_get_buffers, .flushFrontBuffer = dri_flush_front_buffer, }; static const __DRIswrastLoaderExtension swrast_loader_extension = { .base = { __DRI_SWRAST_LOADER, 2 }, .getDrawableInfo = swrast_get_drawable_info, .putImage = swrast_put_image, .getImage = swrast_get_image, .putImage2 = swrast_put_image2 }; static const __DRIextension *gbm_dri_screen_extensions[] = { &image_lookup_extension.base, &use_invalidate.base, &dri2_loader_extension.base, &image_loader_extension.base, &swrast_loader_extension.base, NULL, }; struct dri_extension_match { const char *name; int version; int offset; }; static struct dri_extension_match dri_core_extensions[] = { { __DRI2_FLUSH, 1, offsetof(struct gbm_dri_device, flush) }, { __DRI_IMAGE, 1, offsetof(struct gbm_dri_device, image) }, { NULL, 0, 0 } }; static struct dri_extension_match gbm_dri_device_extensions[] = { { __DRI_CORE, 1, offsetof(struct gbm_dri_device, core) }, { __DRI_DRI2, 1, offsetof(struct gbm_dri_device, dri2) }, { NULL, 0, 0 } }; static struct dri_extension_match gbm_swrast_device_extensions[] = { { __DRI_CORE, 1, offsetof(struct gbm_dri_device, core), }, { __DRI_SWRAST, 1, offsetof(struct gbm_dri_device, swrast) }, { NULL, 0, 0 } }; static int dri_bind_extensions(struct gbm_dri_device *dri, struct dri_extension_match *matches, const __DRIextension **extensions) { int i, j, ret = 0; void *field; for (i = 0; extensions[i]; i++) { for (j = 0; matches[j].name; j++) { if (strcmp(extensions[i]->name, matches[j].name) == 0 && extensions[i]->version >= matches[j].version) { field = ((char *) dri + matches[j].offset); *(const __DRIextension **) field = extensions[i]; } } } for (j = 0; matches[j].name; j++) { field = ((char *) dri + matches[j].offset); if (*(const __DRIextension **) field == NULL) { ret = -1; } } return ret; } static const __DRIextension ** dri_open_driver(struct gbm_dri_device *dri) { const __DRIextension **extensions = NULL; char path[PATH_MAX], *search_paths, *p, *next, *end; char *get_extensions_name; search_paths = NULL; /* don't allow setuid apps to use LIBGL_DRIVERS_PATH or GBM_DRIVERS_PATH */ if (geteuid() == getuid()) { /* Read GBM_DRIVERS_PATH first for compatibility, but LIBGL_DRIVERS_PATH * is recommended over GBM_DRIVERS_PATH. */ search_paths = getenv("GBM_DRIVERS_PATH"); /* Read LIBGL_DRIVERS_PATH if GBM_DRIVERS_PATH was not set. * LIBGL_DRIVERS_PATH is recommended over GBM_DRIVERS_PATH. */ if (search_paths == NULL) { search_paths = getenv("LIBGL_DRIVERS_PATH"); } } if (search_paths == NULL) search_paths = DEFAULT_DRIVER_DIR; dri->driver = NULL; end = search_paths + strlen(search_paths); for (p = search_paths; p < end && dri->driver == NULL; p = next + 1) { int len; next = strchr(p, ':'); if (next == NULL) next = end; len = next - p; #if GLX_USE_TLS snprintf(path, sizeof path, "%.*s/tls/%s_dri.so", len, p, dri->base.driver_name); dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL); #endif if (dri->driver == NULL) { snprintf(path, sizeof path, "%.*s/%s_dri.so", len, p, dri->base.driver_name); dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL); } /* not need continue to loop all paths once the driver is found */ if (dri->driver != NULL) break; } if (dri->driver == NULL) { fprintf(stderr, "gbm: failed to open any driver (search paths %s)\n", search_paths); fprintf(stderr, "gbm: Last dlopen error: %s\n", dlerror()); return NULL; } if (asprintf(&get_extensions_name, "%s_%s", __DRI_DRIVER_GET_EXTENSIONS, dri->base.driver_name) != -1) { const __DRIextension **(*get_extensions)(void); get_extensions = dlsym(dri->driver, get_extensions_name); free(get_extensions_name); if (get_extensions) extensions = get_extensions(); } if (!extensions) extensions = dlsym(dri->driver, __DRI_DRIVER_EXTENSIONS); if (extensions == NULL) { fprintf(stderr, "gbm: driver exports no extensions (%s)", dlerror()); dlclose(dri->driver); } return extensions; } static int dri_load_driver(struct gbm_dri_device *dri) { const __DRIextension **extensions; extensions = dri_open_driver(dri); if (!extensions) return -1; if (dri_bind_extensions(dri, gbm_dri_device_extensions, extensions) < 0) { dlclose(dri->driver); fprintf(stderr, "failed to bind extensions\n"); return -1; } dri->driver_extensions = extensions; return 0; } static int dri_load_driver_swrast(struct gbm_dri_device *dri) { const __DRIextension **extensions; extensions = dri_open_driver(dri); if (!extensions) return -1; if (dri_bind_extensions(dri, gbm_swrast_device_extensions, extensions) < 0) { dlclose(dri->driver); fprintf(stderr, "failed to bind extensions\n"); return -1; } dri->driver_extensions = extensions; return 0; } static int dri_screen_create_dri2(struct gbm_dri_device *dri, const char *driver_name) { const __DRIextension **extensions; int ret = 0; dri->base.driver_name = driver_name; if (dri->base.driver_name == NULL) return -1; ret = dri_load_driver(dri); if (ret) { fprintf(stderr, "failed to load driver: %s\n", dri->base.driver_name); return ret; }; dri->extensions = gbm_dri_screen_extensions; if (dri->dri2 == NULL) return -1; if (dri->dri2->base.version >= 4) { dri->screen = dri->dri2->createNewScreen2(0, dri->base.base.fd, dri->extensions, dri->driver_extensions, &dri->driver_configs, dri); } else { dri->screen = dri->dri2->createNewScreen(0, dri->base.base.fd, dri->extensions, &dri->driver_configs, dri); } if (dri->screen == NULL) return -1; extensions = dri->core->getExtensions(dri->screen); if (dri_bind_extensions(dri, dri_core_extensions, extensions) < 0) { ret = -1; goto free_screen; } dri->lookup_image = NULL; dri->lookup_user_data = NULL; return 0; free_screen: dri->core->destroyScreen(dri->screen); return ret; } static int dri_screen_create_swrast(struct gbm_dri_device *dri) { int ret; dri->base.driver_name = strdup("swrast"); if (dri->base.driver_name == NULL) return -1; ret = dri_load_driver_swrast(dri); if (ret) { fprintf(stderr, "failed to load swrast driver\n"); return ret; } dri->extensions = gbm_dri_screen_extensions; if (dri->swrast == NULL) return -1; if (dri->swrast->base.version >= 4) { dri->screen = dri->swrast->createNewScreen2(0, dri->extensions, dri->driver_extensions, &dri->driver_configs, dri); } else { dri->screen = dri->swrast->createNewScreen(0, dri->extensions, &dri->driver_configs, dri); } if (dri->screen == NULL) return -1; dri->lookup_image = NULL; dri->lookup_user_data = NULL; return 0; } static int dri_screen_create(struct gbm_dri_device *dri) { const char *driver_name; driver_name = loader_get_driver_for_fd(dri->base.base.fd, 0); if (!driver_name) return -1; return dri_screen_create_dri2(dri, driver_name); } static int dri_screen_create_sw(struct gbm_dri_device *dri) { const char *driver_name; int ret; driver_name = strdup("kms_swrast"); if (!driver_name) return -errno; ret = dri_screen_create_dri2(dri, driver_name); if (ret == 0) return ret; return dri_screen_create_swrast(dri); } static int gbm_dri_is_format_supported(struct gbm_device *gbm, uint32_t format, uint32_t usage) { switch (format) { case GBM_BO_FORMAT_XRGB8888: case GBM_FORMAT_XRGB8888: break; case GBM_BO_FORMAT_ARGB8888: case GBM_FORMAT_ARGB8888: if (usage & GBM_BO_USE_SCANOUT) return 0; break; default: return 0; } if (usage & GBM_BO_USE_CURSOR && usage & GBM_BO_USE_RENDERING) return 0; return 1; } static int gbm_dri_bo_write(struct gbm_bo *_bo, const void *buf, size_t count) { struct gbm_dri_bo *bo = gbm_dri_bo(_bo); if (bo->image != NULL) { errno = EINVAL; return -1; } memcpy(bo->map, buf, count); return 0; } static int gbm_dri_bo_get_fd(struct gbm_bo *_bo) { struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm); struct gbm_dri_bo *bo = gbm_dri_bo(_bo); int fd; if (bo->image == NULL) return -1; dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_FD, &fd); return fd; } static void gbm_dri_bo_destroy(struct gbm_bo *_bo) { struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm); struct gbm_dri_bo *bo = gbm_dri_bo(_bo); struct drm_mode_destroy_dumb arg; if (bo->image != NULL) { dri->image->destroyImage(bo->image); } else { gbm_dri_bo_unmap(bo); memset(&arg, 0, sizeof(arg)); arg.handle = bo->handle; drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg); } free(bo); } static uint32_t gbm_dri_to_gbm_format(uint32_t dri_format) { uint32_t ret = 0; switch (dri_format) { case __DRI_IMAGE_FORMAT_RGB565: ret = GBM_FORMAT_RGB565; break; case __DRI_IMAGE_FORMAT_XRGB8888: ret = GBM_FORMAT_XRGB8888; break; case __DRI_IMAGE_FORMAT_ARGB8888: ret = GBM_FORMAT_ARGB8888; break; case __DRI_IMAGE_FORMAT_ABGR8888: ret = GBM_FORMAT_ABGR8888; break; default: ret = 0; break; } return ret; } static struct gbm_bo * gbm_dri_bo_import(struct gbm_device *gbm, uint32_t type, void *buffer, uint32_t usage) { struct gbm_dri_device *dri = gbm_dri_device(gbm); struct gbm_dri_bo *bo; __DRIimage *image; unsigned dri_use = 0; int gbm_format; /* Required for query image WIDTH & HEIGHT */ if (dri->image == NULL || dri->image->base.version < 4) { errno = ENOSYS; return NULL; } switch (type) { #if HAVE_WAYLAND_PLATFORM case GBM_BO_IMPORT_WL_BUFFER: { struct wl_drm_buffer *wb; if (!dri->wl_drm) { errno = EINVAL; return NULL; } wb = wayland_drm_buffer_get(dri->wl_drm, (struct wl_resource *) buffer); if (!wb) { errno = EINVAL; return NULL; } image = dri->image->dupImage(wb->driver_buffer, NULL); switch (wb->format) { case WL_DRM_FORMAT_XRGB8888: gbm_format = GBM_FORMAT_XRGB8888; break; case WL_DRM_FORMAT_ARGB8888: gbm_format = GBM_FORMAT_ARGB8888; break; case WL_DRM_FORMAT_RGB565: gbm_format = GBM_FORMAT_RGB565; break; case WL_DRM_FORMAT_YUYV: gbm_format = GBM_FORMAT_YUYV; break; default: return NULL; } break; } #endif case GBM_BO_IMPORT_EGL_IMAGE: { int dri_format; if (dri->lookup_image == NULL) { errno = EINVAL; return NULL; } image = dri->lookup_image(dri->screen, buffer, dri->lookup_user_data); image = dri->image->dupImage(image, NULL); dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_FORMAT, &dri_format); gbm_format = gbm_dri_to_gbm_format(dri_format); if (gbm_format == 0) { errno = EINVAL; return NULL; } break; } case GBM_BO_IMPORT_FD: { struct gbm_import_fd_data *fd_data = buffer; int stride = fd_data->stride, offset = 0; image = dri->image->createImageFromFds(dri->screen, fd_data->width, fd_data->height, fd_data->format, &fd_data->fd, 1, &stride, &offset, NULL); gbm_format = fd_data->format; break; } default: errno = ENOSYS; return NULL; } bo = calloc(1, sizeof *bo); if (bo == NULL) return NULL; bo->image = image; if (usage & GBM_BO_USE_SCANOUT) dri_use |= __DRI_IMAGE_USE_SCANOUT; if (usage & GBM_BO_USE_CURSOR) dri_use |= __DRI_IMAGE_USE_CURSOR; if (dri->image->base.version >= 2 && !dri->image->validateUsage(bo->image, dri_use)) { errno = EINVAL; free(bo); return NULL; } bo->base.base.gbm = gbm; bo->base.base.format = gbm_format; dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_WIDTH, (int*)&bo->base.base.width); dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HEIGHT, (int*)&bo->base.base.height); dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, (int*)&bo->base.base.stride); dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE, &bo->base.base.handle.s32); return &bo->base.base; } static struct gbm_bo * create_dumb(struct gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t usage) { struct gbm_dri_device *dri = gbm_dri_device(gbm); struct drm_mode_create_dumb create_arg; struct gbm_dri_bo *bo; struct drm_mode_destroy_dumb destroy_arg; int ret; int is_cursor, is_scanout; is_cursor = (usage & GBM_BO_USE_CURSOR) != 0 && format == GBM_FORMAT_ARGB8888; is_scanout = (usage & GBM_BO_USE_SCANOUT) != 0 && format == GBM_FORMAT_XRGB8888; if (!is_cursor && !is_scanout) { errno = EINVAL; return NULL; } bo = calloc(1, sizeof *bo); if (bo == NULL) return NULL; create_arg.bpp = 32; create_arg.width = width; create_arg.height = height; ret = drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg); if (ret) goto free_bo; bo->base.base.gbm = gbm; bo->base.base.width = width; bo->base.base.height = height; bo->base.base.stride = create_arg.pitch; bo->base.base.format = format; bo->base.base.handle.u32 = create_arg.handle; bo->handle = create_arg.handle; bo->size = create_arg.size; if (gbm_dri_bo_map(bo) == NULL) goto destroy_dumb; return &bo->base.base; destroy_dumb: memset(&destroy_arg, 0, sizeof destroy_arg); destroy_arg.handle = create_arg.handle; drmIoctl(dri->base.base.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg); free_bo: free(bo); return NULL; } static struct gbm_bo * gbm_dri_bo_create(struct gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t usage) { struct gbm_dri_device *dri = gbm_dri_device(gbm); struct gbm_dri_bo *bo; int dri_format; unsigned dri_use = 0; if (usage & GBM_BO_USE_WRITE || dri->image == NULL) return create_dumb(gbm, width, height, format, usage); bo = calloc(1, sizeof *bo); if (bo == NULL) return NULL; bo->base.base.gbm = gbm; bo->base.base.width = width; bo->base.base.height = height; bo->base.base.format = format; switch (format) { case GBM_FORMAT_RGB565: dri_format =__DRI_IMAGE_FORMAT_RGB565; break; case GBM_FORMAT_XRGB8888: case GBM_BO_FORMAT_XRGB8888: dri_format = __DRI_IMAGE_FORMAT_XRGB8888; break; case GBM_FORMAT_ARGB8888: case GBM_BO_FORMAT_ARGB8888: dri_format = __DRI_IMAGE_FORMAT_ARGB8888; break; case GBM_FORMAT_ABGR8888: dri_format = __DRI_IMAGE_FORMAT_ABGR8888; break; case GBM_FORMAT_ARGB2101010: dri_format = __DRI_IMAGE_FORMAT_ARGB2101010; break; case GBM_FORMAT_XRGB2101010: dri_format = __DRI_IMAGE_FORMAT_XRGB2101010; break; default: errno = EINVAL; goto failed; } if (usage & GBM_BO_USE_SCANOUT) dri_use |= __DRI_IMAGE_USE_SCANOUT; if (usage & GBM_BO_USE_CURSOR) dri_use |= __DRI_IMAGE_USE_CURSOR; /* Gallium drivers requires shared in order to get the handle/stride */ dri_use |= __DRI_IMAGE_USE_SHARE; bo->image = dri->image->createImage(dri->screen, width, height, dri_format, dri_use, bo); if (bo->image == NULL) goto failed; dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE, &bo->base.base.handle.s32); dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, (int *) &bo->base.base.stride); return &bo->base.base; failed: free(bo); return NULL; } static struct gbm_surface * gbm_dri_surface_create(struct gbm_device *gbm, uint32_t width, uint32_t height, uint32_t format, uint32_t flags) { struct gbm_dri_surface *surf; surf = calloc(1, sizeof *surf); if (surf == NULL) return NULL; surf->base.gbm = gbm; surf->base.width = width; surf->base.height = height; surf->base.format = format; surf->base.flags = flags; return &surf->base; } static void gbm_dri_surface_destroy(struct gbm_surface *_surf) { struct gbm_dri_surface *surf = gbm_dri_surface(_surf); free(surf); } static void dri_destroy(struct gbm_device *gbm) { struct gbm_dri_device *dri = gbm_dri_device(gbm); dri->core->destroyScreen(dri->screen); free(dri->driver_configs); dlclose(dri->driver); free(dri->base.driver_name); free(dri); } static struct gbm_device * dri_device_create(int fd) { struct gbm_dri_device *dri; int ret, force_sw; dri = calloc(1, sizeof *dri); if (!dri) return NULL; dri->base.base.fd = fd; dri->base.base.bo_create = gbm_dri_bo_create; dri->base.base.bo_import = gbm_dri_bo_import; dri->base.base.is_format_supported = gbm_dri_is_format_supported; dri->base.base.bo_write = gbm_dri_bo_write; dri->base.base.bo_get_fd = gbm_dri_bo_get_fd; dri->base.base.bo_destroy = gbm_dri_bo_destroy; dri->base.base.destroy = dri_destroy; dri->base.base.surface_create = gbm_dri_surface_create; dri->base.base.surface_destroy = gbm_dri_surface_destroy; dri->base.type = GBM_DRM_DRIVER_TYPE_DRI; dri->base.base.name = "drm"; force_sw = getenv("GBM_ALWAYS_SOFTWARE") != NULL; if (!force_sw) { ret = dri_screen_create(dri); if (ret) ret = dri_screen_create_sw(dri); } else { ret = dri_screen_create_sw(dri); } if (ret) goto err_dri; return &dri->base.base; err_dri: free(dri); return NULL; } struct gbm_backend gbm_dri_backend = { .backend_name = "dri", .create_device = dri_device_create, };