Overdraw

= Overdraw =

Overdraw means a screen pixel is being drawn more than once. This re-drawing of the pixels can slow down the frame rate, because re-rendering a pixel more than once is usually a waste of processing time.

Overdraw is usually caused by multiple triangles being drawn over each other, for example with particle effects or tree foliage. Overdraw is required if the pixels are partially transparent, but should be avoided whenever possible.