Jesse Williams d74c38108f Confirm that options are valid before starting
When using the 'Sampler' or 'Checkpoint' options, if one of the entered
names has a typo, an error will only be thrown once the `draw_xy_grid`
loop reaches that name. This can waste a lot of time for large grids
with a typo near the end of a list, since the script needs to start over
and re-generate any earlier images to finish making the grid.

Also fixing typo in variable name in `draw_xy_grid`.
2022-10-09 12:39:18 +03:00
..
2022-09-17 12:43:57 -07:00
2022-10-06 14:12:52 +03:00