vo_opengl: implement naive anti-ringing

This is not quite the same thing as madVR's antiringing algorithm, but
it essentially does something similar.

Porting madVR's approach to elliptic coordinates will take some amount
of thought.

1 files changed, 1 insertions, 0 deletions

diff --git a/video/out/gl_video.h b/video/out/gl_video.h
index b3c5d5abe5..980f237a15 100644
--- a/video/out/gl_video.h
+++ b/video/out/gl_video.h
@@ -33,6 +33,7 @@ struct gl_video_opts {
     char *dscaler;
     float scaler_params[2][2];
     float scaler_radius[2];
+    float scaler_antiring[2];
     int indirect;
     float gamma;
     int srgb;