BOOL
DRI3Open(Display *dpy, int screen, int *device_fd)
{
xcb_dri3_open_cookie_t cookie;
xcb_dri3_open_reply_t *reply;
xcb_connection_t *xcb_connection = XGetXCBConnection(dpy);
int fd;
Window root = RootWindow(dpy, screen);
cookie = xcb_dri3_open(xcb_connection, root, 0);
reply = xcb_dri3_open_reply(xcb_connection, cookie, NULL);
if (!reply)
return FALSE;
if (reply->nfd != 1) {
free(reply);
return FALSE;
}
fd = xcb_dri3_open_reply_fds(xcb_connection, reply)[0];
fcntl(fd, F_SETFD, FD_CLOEXEC);
*device_fd = fd;
free(reply);
return TRUE;
}
/** loader_dri3_open
*
* Wrapper around xcb_dri3_open
*/
int
loader_dri3_open(xcb_connection_t *conn,
xcb_window_t root,
uint32_t provider)
{
xcb_dri3_open_cookie_t cookie;
xcb_dri3_open_reply_t *reply;
int fd;
cookie = xcb_dri3_open(conn,
root,
provider);
reply = xcb_dri3_open_reply(conn, cookie, NULL);
if (!reply)
return -1;
if (reply->nfd != 1) {
free(reply);
return -1;
}
fd = xcb_dri3_open_reply_fds(conn, reply)[0];
fcntl(fd, F_SETFD, fcntl(fd, F_GETFD) | FD_CLOEXEC);
return fd;
}
struct vl_screen *
vl_dri3_screen_create(Display *display, int screen)
{
struct vl_dri3_screen *scrn;
const xcb_query_extension_reply_t *extension;
xcb_dri3_open_cookie_t open_cookie;
xcb_dri3_open_reply_t *open_reply;
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_geometry_reply_t *geom_reply;
int is_different_gpu;
int fd;
assert(display);
scrn = CALLOC_STRUCT(vl_dri3_screen);
if (!scrn)
return NULL;
scrn->conn = XGetXCBConnection(display);
if (!scrn->conn)
goto free_screen;
xcb_prefetch_extension_data(scrn->conn , &xcb_dri3_id);
xcb_prefetch_extension_data(scrn->conn, &xcb_present_id);
extension = xcb_get_extension_data(scrn->conn, &xcb_dri3_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_present_id);
if (!(extension && extension->present))
goto free_screen;
open_cookie = xcb_dri3_open(scrn->conn, RootWindow(display, screen), None);
open_reply = xcb_dri3_open_reply(scrn->conn, open_cookie, NULL);
if (!open_reply)
goto free_screen;
if (open_reply->nfd != 1) {
free(open_reply);
goto free_screen;
}
fd = xcb_dri3_open_reply_fds(scrn->conn, open_reply)[0];
if (fd < 0) {
free(open_reply);
goto free_screen;
}
fcntl(fd, F_SETFD, FD_CLOEXEC);
free(open_reply);
fd = loader_get_user_preferred_fd(fd, &is_different_gpu);
/* TODO support different GPU */
if (is_different_gpu)
goto close_fd;
geom_cookie = xcb_get_geometry(scrn->conn, RootWindow(display, screen));
geom_reply = xcb_get_geometry_reply(scrn->conn, geom_cookie, NULL);
if (!geom_reply)
goto close_fd;
/* TODO support depth other than 24 */
if (geom_reply->depth != 24) {
free(geom_reply);
goto close_fd;
}
free(geom_reply);
if (pipe_loader_drm_probe_fd(&scrn->base.dev, fd))
scrn->base.pscreen = pipe_loader_create_screen(scrn->base.dev);
if (!scrn->base.pscreen)
goto release_pipe;
scrn->base.destroy = vl_dri3_screen_destroy;
scrn->base.texture_from_drawable = vl_dri3_screen_texture_from_drawable;
scrn->base.get_dirty_area = vl_dri3_screen_get_dirty_area;
scrn->base.get_timestamp = vl_dri3_screen_get_timestamp;
scrn->base.set_next_timestamp = vl_dri3_screen_set_next_timestamp;
scrn->base.get_private = vl_dri3_screen_get_private;
scrn->base.pscreen->flush_frontbuffer = vl_dri3_flush_frontbuffer;
return &scrn->base;
release_pipe:
if (scrn->base.dev) {
pipe_loader_release(&scrn->base.dev, 1);
fd = -1;
}
close_fd:
if (fd != -1)
close(fd);
free_screen:
FREE(scrn);
return NULL;
}
struct vl_screen *
vl_dri3_screen_create(Display *display, int screen)
{
struct vl_dri3_screen *scrn;
const xcb_query_extension_reply_t *extension;
xcb_dri3_open_cookie_t open_cookie;
xcb_dri3_open_reply_t *open_reply;
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_geometry_reply_t *geom_reply;
xcb_xfixes_query_version_cookie_t xfixes_cookie;
xcb_xfixes_query_version_reply_t *xfixes_reply;
xcb_generic_error_t *error;
int fd;
assert(display);
scrn = CALLOC_STRUCT(vl_dri3_screen);
if (!scrn)
return NULL;
scrn->conn = XGetXCBConnection(display);
if (!scrn->conn)
goto free_screen;
xcb_prefetch_extension_data(scrn->conn , &xcb_dri3_id);
xcb_prefetch_extension_data(scrn->conn, &xcb_present_id);
xcb_prefetch_extension_data (scrn->conn, &xcb_xfixes_id);
extension = xcb_get_extension_data(scrn->conn, &xcb_dri3_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_present_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_xfixes_id);
if (!(extension && extension->present))
goto free_screen;
xfixes_cookie = xcb_xfixes_query_version(scrn->conn, XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION);
xfixes_reply = xcb_xfixes_query_version_reply(scrn->conn, xfixes_cookie, &error);
if (!xfixes_reply || error || xfixes_reply->major_version < 2) {
free(error);
free(xfixes_reply);
goto free_screen;
}
free(xfixes_reply);
open_cookie = xcb_dri3_open(scrn->conn, RootWindow(display, screen), None);
open_reply = xcb_dri3_open_reply(scrn->conn, open_cookie, NULL);
if (!open_reply)
goto free_screen;
if (open_reply->nfd != 1) {
free(open_reply);
goto free_screen;
}
fd = xcb_dri3_open_reply_fds(scrn->conn, open_reply)[0];
if (fd < 0) {
free(open_reply);
goto free_screen;
}
fcntl(fd, F_SETFD, FD_CLOEXEC);
free(open_reply);
fd = loader_get_user_preferred_fd(fd, &scrn->is_different_gpu);
geom_cookie = xcb_get_geometry(scrn->conn, RootWindow(display, screen));
geom_reply = xcb_get_geometry_reply(scrn->conn, geom_cookie, NULL);
if (!geom_reply)
goto close_fd;
scrn->base.xcb_screen = dri3_get_screen_for_root(scrn->conn, geom_reply->root);
if (!scrn->base.xcb_screen) {
free(geom_reply);
goto close_fd;
}
/* TODO support depth other than 24 or 30 */
if (geom_reply->depth != 24 && geom_reply->depth != 30) {
free(geom_reply);
goto close_fd;
}
scrn->base.color_depth = geom_reply->depth;
free(geom_reply);
if (pipe_loader_drm_probe_fd(&scrn->base.dev, fd))
scrn->base.pscreen = pipe_loader_create_screen(scrn->base.dev);
if (!scrn->base.pscreen)
goto release_pipe;
scrn->pipe = scrn->base.pscreen->context_create(scrn->base.pscreen,
NULL, 0);
if (!scrn->pipe)
goto no_context;
scrn->base.destroy = vl_dri3_screen_destroy;
scrn->base.texture_from_drawable = vl_dri3_screen_texture_from_drawable;
scrn->base.get_dirty_area = vl_dri3_screen_get_dirty_area;
scrn->base.get_timestamp = vl_dri3_screen_get_timestamp;
scrn->base.set_next_timestamp = vl_dri3_screen_set_next_timestamp;
scrn->base.get_private = vl_dri3_screen_get_private;
scrn->base.pscreen->flush_frontbuffer = vl_dri3_flush_frontbuffer;
scrn->base.set_back_texture_from_output = vl_dri3_screen_set_back_texture_from_output;
scrn->next_back = 1;
return &scrn->base;
no_context:
scrn->base.pscreen->destroy(scrn->base.pscreen);
release_pipe:
if (scrn->base.dev) {
pipe_loader_release(&scrn->base.dev, 1);
fd = -1;
}
close_fd:
if (fd != -1)
close(fd);
free_screen:
FREE(scrn);
return NULL;
}