CONV_GP_SIZE_X vs WIN_BUF_SIZE

[justinf2]

Hello, I'm having a hard time understanding what exactly CONV_GP_SIZE_X is controlling. If I'm understanding these parameters correctly WIN_BUF_SIZE is controlling how many pixels are in the window buffer total and CONV_GP_SIZE_X is controlling the number of windows worth of data that is being loaded into the window buffer at a time? I'm likely wrong about CONV_GP_SIZE_X and would greatly appreciate if anyone could clarify the role of CONV_GP_SIZE_X for me.