/**
* Check that the X server supports the RENDER extension.
*/
static bool CheckRender(vout_display_t *vd, xcb_connection_t *conn)
{
xcb_render_query_version_reply_t *r;
xcb_render_query_version_cookie_t ck;
bool ok = false;
ck = xcb_render_query_version(conn, 0, 11);
r = xcb_render_query_version_reply(conn, ck, NULL);
if (r == NULL)
msg_Err(vd, "RENDER extension not available");
else if (r->major_version > 0)
msg_Dbg(vd, "RENDER extension v%"PRIu32".%"PRIu32" unknown",
r->major_version, r->minor_version);
else if (r->major_version == 0 && r->minor_version < 6)
msg_Dbg(vd, "RENDER extension v%"PRIu32".%"PRIu32" too old",
r->major_version, r->minor_version);
else {
msg_Dbg(vd, "using RENDER extension v%"PRIu32".%"PRIu32,
r->major_version, r->minor_version);
ok = true;
}
free(r);
return ok;
}
static connection_cache *
find_or_create_display (xcb_connection_t *c)
{
connection_cache *info;
xcb_render_query_version_cookie_t version_cookie;
xcb_render_query_pict_formats_cookie_t formats_cookie;
int present;
/*
* look for display in list
*/
for (info = connections.head; info; info = info->next)
if (info->c == c) {
connections.cur = info; /* cache most recently used */
return info;
}
/*
* don't already have this display: add it.
*/
info = malloc (sizeof (connection_cache));
if (!info)
return NULL;
info->c = c;
version_cookie = xcb_render_query_version(c, 0, 10);
formats_cookie = xcb_render_query_pict_formats(c);
xcb_flush(c);
present = has_required_depths (c);
info->version = xcb_render_query_version_reply(c, version_cookie, 0);
info->formats = xcb_render_query_pict_formats_reply(c, formats_cookie, 0);
if (!present || !info->version || !info->formats)
{
free(info->version);
info->version = 0;
free(info->formats);
info->formats = 0;
}
/* Check for the lack of sub-pixel data */
else if (info->version->major_version == 0 && info->version->minor_version < 6)
info->formats->num_subpixel = 0;
/*
* now, chain it onto the list
*/
info->next = connections.head;
connections.head = info;
connections.cur = info;
return info;
}
