core: simplify OSD capability handling, remove VFCAP_OSD

VFCAP_OSD was used to determine at runtime whether the VO supports OSD
rendering. This was mostly unused. vo_direct3d had an option to disable
OSD (was supposed to allow to force auto-insertion of vf_ass, but we
removed that anyway). vo_opengl_old could disable OSD rendering when a
very old OpenGL version was detected, and had an option to explicitly
disable it as well.

Remove VFCAP_OSD from everything (and some associated logic). Now the
vo_driver.draw_osd callback can be set to NULL to indicate missing OSD
support (important so that vo_null etc. don't single-step on OSD
redraw), and if OSD support depends on runtime support, the VO's
draw_osd should just do nothing if OSD is not available.

Also, do not access vo->want_redraw directly. Change the want_redraw
reset logic for this purpose, too. (Probably unneeded, vo_flip_page
resets it already.)

1 files changed, 0 insertions, 3 deletions

diff --git a/video/filter/vf_vo.c b/video/filter/vf_vo.c
index d8d00130d7..922229aa53 100644
--- a/video/filter/vf_vo.c
+++ b/video/filter/vf_vo.c
@@ -63,9 +63,6 @@ static int config(struct vf_instance *vf,
     if (vo_config(video_out, width, height, d_width, d_height, flags, outfmt))
         return 0;
 
-    // save vo's stride capability for the wanted colorspace:
-    vf->default_caps = video_out->default_caps;
-
     return 1;
 }