vo_opengl: x11egl: retrieve framebuffer depth

This is used for dithering, although I'm not aware of anyone who got
higher than 8 bit depth support to work on Linux.

Also put this into egl_helpers.c. Since EGL is pseudo-portable at best I
have no hope that the EGL context creation code in all the backends can
be fully shared. But some self-contained functionality can definitely be
shared.

1 files changed, 6 insertions, 1 deletions

diff --git a/wscript b/wscript
index a5e6914133..9d09170fac 100644
--- a/wscript
+++ b/wscript
@@ -760,7 +760,12 @@ video_output_features = [
     } , {
         'name': '--gl',
         'desc': 'OpenGL video outputs',
-        'deps_any': [ 'gl-cocoa', 'gl-x11', 'egl-drm', 'gl-win32', 'gl-wayland', 'rpi' ],
+        'deps_any': [ 'gl-cocoa', 'gl-x11', 'egl-x11', 'egl-drm', 'gl-win32', 'gl-wayland', 'rpi' ],
+        'func': check_true
+    }, {
+        'name': 'egl-helpers',
+        'desc': 'EGL helper functions',
+        'deps_any': [ 'egl-x11' ],
         'func': check_true
     }
 ]