Mosaic Features Missing?

A few months ago, I was working on a project and utilizing the mosaic feature, specifically changing the amount of blocks on the x and y axis so the blocks weren’t prefect squares (192*180 blocks for the whole screen). I also remember being able to click a button to sharpen the edges and have it only affect the vertical lines, so the horizontal lines were still blurred. 

I can’t find these features anymore, were they removed? Is there a way I can imitate the effect I had by changing the currently existing parameters? I imagine not, if I can’t change the block’s width and height properties, but please let me know.