Turn on the subpixel dot at absolute subpixel coordinates (x_sub in [0, sub_w), y_sub in [0, sub_h)). Coordinates outside the canvas are ignored, so callers never corrupt an out-of-range cell.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| type(braille_canvas_t), | intent(inout) | :: | canvas | |||
| integer, | intent(in) | :: | x_sub | |||
| integer, | intent(in) | :: | y_sub |