Potential Bug in Akvfx.compute?

[noisecrime]

I've been using Akvfx as the basis for supporting Windows Kinect V2 and was puzzled by this line in Akvfx.compute.

// Buffer index
uint idx = (577 - id.y) * 640 + id.x;

I cannot work out why its using 577 for the number of rows from the depth image?
Either I'm missing some other purpose in the shader or perhaps its just a typo?

As the depth image from Azure Kinect is 640x576 and I assume id.y goes from 0 to 575 should it be

uint idx = (575 - id.y) * 640 + id.x;

I.E the height of the image - 1 to account for id.y being from 0 to 575.

[keijiro]

I think it's simply a bug.