Moving the zFar clipping plane further away from the eye always has a negative impact on depth buffer precision, but it's not one as dramatic as moving the zNear clipping plane. As the zNear clipping plane is set increasingly closer to 0.0, the effective precision of the depth buffer decreases dramatically. Generally, this is caused by a zNear clipping plane value that's too close to 0.0. You may have configured your zNear and zFar clipping planes in a way that severely limits your depth buffer precision. 5 Assuming perspective projection, what is the optimal precision distribution for the depth buffer? What is the best depth buffer format?ĭepth buffering seems to work, but polygons seem to bleed through polygons that are in front of them.4 There is no way that a standard-sized depth buffer will have enough precision for my astronomically large scene.3 Why is there more precision at the front of the depth buffer?.2 Why is my depth buffer precision so poor?.1 Depth buffering seems to work, but polygons seem to bleed through polygons that are in front of them.