[Babul]

https://sampwiki.blast.hk/wiki/TextDrawCreate

Quote:

Note: The x,y coordinate is the top left coordinate for the text draw area based on a 640x480 "canvas" (irrespective of screen resolution). If you plan on using TextDrawAlignment with alignment 3 (right), the x,y coordinate is the top right coordinate for the text draw.

..so you will need to create the textdraw at 0,0 but you also need to format it with a pretty huge string in order to let it accumulate the entire screen. it depends on the fontsize, too.