SOLVED: Transcoding not working (i have RX5700 Win10)

[nyanmisaka]

There is a regression in AMD's OpenCL runtime. Please stick with 23.x.x driver until it's fixed.

I will try to report this to AMD stuffs.

For details:

The error Failed to release texture: -60 happened in clEnqueueReleaseD3D11ObjectsKHR(), which is used to release the DX11->OpenCL interop texture.

It returns -60 which is ridiculous. Because -60 (CL_INVALID_GL_OBJECT) is used exclusively in OpenGL/CL sharing, not DX11/CL sharing. According to the OpenCL documentation, this value is also not within the return value range of this function.

After digging deeper into AMD's OpenCL runtime (clr), I found that the return code -60 only used by OpenGL/CL interop does appear on the return path of this DX11/CL sharing function. And they refactored this part of the code not long ago.

https://github.com/ROCm/clr/blame/8ff39a....cpp#L1597
https://github.com/ROCm/clr/blame/8ff39a....cpp#L1583
https://github.com/ROCm/clr/blame/8ff39a....cpp#L1708
https://github.com/ROCm/clr/blame/8ff39a....cpp#L1693
https://github.com/ROCm/clr/blob/8ff39a5...#L388-L395

Code:

// jellyfin-ffmpeg/libavutil/hwcontext_opencl.c
static void opencl_unmap_from_d3d11(AVHWFramesContext *dst_fc,
                                    HWMapDescriptor *hwmap)
{
    AVOpenCLFrameDescriptor    *desc = hwmap->priv;
    OpenCLDeviceContext *device_priv = dst_fc->device_ctx->internal->priv;
    OpenCLFramesContext *frames_priv = dst_fc->internal->priv;
    cl_event event;
    cl_int cle;

    cle = device_priv->clEnqueueReleaseD3D11ObjectsKHR(
        frames_priv->command_queue, desc->nb_planes, desc->planes,
        0, NULL, &event);
    if (cle != CL_SUCCESS) {
        av_log(dst_fc, AV_LOG_ERROR, "Failed to release texture "
              "handle: %d.\n", cle);
    }

    opencl_wait_events(dst_fc, &event, 1);
}