Is it possible to achieve showing clear map with pixel correct in 2D mode?

Hi, I'm trying to show the map more clearly without stretching tiles (ie, so that the size of the tile 256x256 held on screen 256x256).

I'm find this: http://openlayers.org/ol3-cesium/

The setting you’re probably looking for is viewer.scene.globe.maximumScreenSpaceError = 1; This value defaults to 2 which loads less tiles but produces less crisp imagery. When we refactor our tile loading algorithms to be more efficient, we will most likely make 1 the default.