options: refactor how --opengl-dcomposition is declared

vo_opengl used to have it as sub-option, which made it very hard to pass
down option values to backends in a generic way (even if these options
were completely backend-specific). For --opengl-dcomposition we used a
VOFLAG to deal with this. Fortunately, sub-options are gone, and we can
just add it as global option.

Move the option to context_angle.c and add it as global option. I
thought about adding a mechanism to let backends declare options, which
would get magically picked up my m_config instead of having to add them
to the global option list manually (similar to VO vo_driver.options),
but decided against this complexity just for 1 or 2 backends. Likewise,
it could have been added as a single option to avoid the boilerplate of
an option struct, but then again there are probably going to be more
angle suboptions, and it's cleaner.

1 files changed, 6 insertions, 0 deletions

diff --git a/options/options.c b/options/options.c
index 6afe611c6d..af13d1e434 100644
--- a/options/options.c
+++ b/options/options.c
@@ -88,6 +88,8 @@ extern const struct m_obj_list af_obj_list;
 extern const struct m_obj_list vo_obj_list;
 extern const struct m_obj_list ao_obj_list;
 
+extern const struct m_sub_options angle_conf;
+
 const struct m_opt_choice_alternatives mp_hwdec_names[] = {
     {"no",          HWDEC_NONE},
     {"auto",        HWDEC_AUTO},
@@ -691,6 +693,10 @@ const m_option_t mp_opts[] = {
     OPT_SUBSTRUCT("", gl_video_opts, gl_video_conf, 0),
 #endif
 
+#if HAVE_EGL_ANGLE
+    OPT_SUBSTRUCT("", angle_opts, angle_conf, 0),
+#endif
+
 #if HAVE_ENCODING
     OPT_SUBSTRUCT("", encode_opts, encode_config, 0),
 #endif