OSD icon flicker severely

[zhouruixi]

OSD icon is flicker, when I set --osd-refresh 200, it flicker severely.

When start PixelPilot, I can get this information:

PixelPilot Rockchip 1.1
Using plane 76 (NV12) for Video
Using plane 54 (ARGB8888) for OSD

Information shows that Video is using plane 76, OSD is using plane 54. According to my test, plane 76 is the upper(Overlay) layer and plane 54 is the lower(Primary) layer.

Video should be in the Primary layer (plane id 54), OSD should be in the Overlay layer (plane 76)？

[zhouruixi]

Why video must use NV12 format? RK3566 Primary plane(Plane 0 plane id 54) does not support it. Can we use Plane 2(plane id 90) for OSD?

    ├───Plane 0
    │   ├───Object ID: 54
    │   ├───CRTCs: {0, 1, 2}
    │   ├───Formats:
    │   │   ├───XRGB8888 (0x34325258)
    │   │   ├───ARGB8888 (0x34325241)
    │   │   ├───XBGR8888 (0x34324258)
    │   │   ├───ABGR8888 (0x34324241)
    │   │   ├───RGB888 (0x34324752)
    │   │   ├───BGR888 (0x34324742)
    │   │   ├───RGB565 (0x36314752)
    │   │   └───BGR565 (0x36314742)

    ├───Plane 1
    │   ├───Object ID: 76
    │   ├───CRTCs: {0, 1, 2}
    │   ├───Formats:
    │   │   ├───XRGB8888 (0x34325258)
    │   │   ├───ARGB8888 (0x34325241)
    │   │   ├───XBGR8888 (0x34324258)
    │   │   ├───ABGR8888 (0x34324241)
    │   │   ├───RGB888 (0x34324752)
    │   │   ├───BGR888 (0x34324742)
    │   │   ├───RGB565 (0x36314752)
    │   │   ├───BGR565 (0x36314742)
    │   │   ├───NV12 (0x3231564e)
    │   │   ├───NV16 (0x3631564e)
    │   │   ├───NV24 (0x3432564e)
    │   │   ├───NV15 (0x3531564e)
    │   │   ├───Unknown (0x3032564e)
    │   │   ├───Unknown (0x3033564e)
    │   │   ├───YUYV (0x56595559)
    │   │   └───UYVY (0x59565955)

    └───Plane 2
        ├───Object ID: 90
        ├───CRTCs: {0, 1, 2}
        ├───Formats:
        │   ├───XRGB2101010 (0x30335258)
        │   ├───ARGB2101010 (0x30335241)
        │   ├───XBGR2101010 (0x30334258)
        │   ├───ABGR2101010 (0x30334241)
        │   ├───XRGB8888 (0x34325258)
        │   ├───ARGB8888 (0x34325241)
        │   ├───XBGR8888 (0x34324258)
        │   ├───ABGR8888 (0x34324241)
        │   ├───RGB888 (0x34324752)
        │   ├───BGR888 (0x34324742)
        │   ├───RGB565 (0x36314752)
        │   ├───BGR565 (0x36314742)
        │   ├───YUV420_8BIT (0x38305559)
        │   ├───YUV420_10BIT (0x30315559)
        │   ├───YUYV (0x56595559)
        │   └───Y210 (0x30313259)

[seriyps]

No idea, apparently it was like that from the very first commit

6edbec3#diff-090d9b4ffda130d35b54d039d51986835c60f2bcf24d825dec5a2220b29ccc9aR521-R530

If you can do some experiments with it, it would be great!

[zhouruixi]

Have no problem with latest commit 5f72b95

now only flicker when no video stream