terminal: choose "gltex" renderer if OpenGL is available

If the uterm backend supports OpenGL, then we should use the "gltex"
renderer as the "bblit" renderer performs pretty badly on OpenGL displays.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/terminal.c b/src/terminal.c
index b0d41c1..6cf509c 100644
--- a/src/terminal.c
+++ b/src/terminal.c
@@ -151,6 +151,7 @@ static int add_display(struct kmscon_terminal *term, struct uterm_display *disp)
 	int ret;
 	unsigned int cols, rows;
 	const struct kmscon_font_attr attr = { "", 0, 20, false, false, 0, 0 };
+	const char *be;
 
 	kmscon_dlist_for_each(iter, &term->screens) {
 		scr = kmscon_dlist_entry(iter, struct screen, list);
@@ -178,7 +179,13 @@ static int add_display(struct kmscon_terminal *term, struct uterm_display *disp)
 		goto err_screen;
 	}
 
-	ret = kmscon_text_new(&scr->txt, NULL);
+	ret = uterm_screen_use(scr->screen);
+	if (!ret)
+		be = "gltex";
+	else
+		be = NULL;
+
+	ret = kmscon_text_new(&scr->txt, be);
 	if (ret) {
 		log_error("cannot create text-renderer");
 		goto err_font;