+ unsigned target_h = 0;
+
+ /* Find the leftmost free pixel on this row. Also record the lowest extent of glyphs
+ to the left of the free position. */
+ for(; (cx<font->image.w && used_pixels[cx]>cy); ++cx)
+ if(used_pixels[cx]-cy-1>target_h)
+ target_h = used_pixels[cx]-cy-1;