UISprite: 1 pixel borders flicker when object is moved

[whisp]

Hi,

I'm moving a prefab made from a couple of UISprites by script: Basically a frame, marking a moving object in the game. Unfortunately the borders of that frame are flickering when the prefab is moving.

Basically the prefab is made from 3 sprites: One with a background texture, one with colored corners, one with differently colored borders. Both, the colored corners as well as the colored borders, are 1 pixel wide. The textures are all at a size of a power of two (and are imported in original size into the atlas). The problem doesn't occure when the borders are wider than 1 pixel.

Can i do something to fix that problem (other than making wider borders)?

Thanks for any hints,
whisp

[Agent_007]

Can you limit your sprite positions to integer values?
http://www.reddit.com/r/Unity2D/comments/2eeo4n/pixel_perfection_in_2d_xpost_from_unity3d/ (3. Sprite transforms)

[whisp]

Thank you!

Rounding to integers works, there's no flickering anymore and in general it looks better than the flickering borders. However, it is choppy instead: it's clearly visible that it is moving pixel wise, i wouldn't have expected it to be so noticeable, since actually everything is moving pixel-wise. This must be the color-interpolation magic my sprites miss now.

[ArenMook]

You either get crispness of sticking to integers (pixels) like Agent_007 suggested, or you lose this crispness but gain smooth movement by using floats. There is no middle ground. This is how all graphics work.