Comment 4 for bug 1526779

Sorry, I realize the numbers are self-consistent - they just don't match reality. After a bit more experimenting reality is:

    buffer_width = 64
    buffer_height = 64
    buffer_stride = 4*64

Which is less odd that I what I thought was happening yesterday (teaches me to count pixels on the screen).

But these values are reported as:

    buffer_width = 256
    buffer_height = 259
    buffer_stride = 1024