Sign in to follow this  
TTK-Bandit

Bitmapped Font artifacts

Recommended Posts

hey I get some artifacts when drawing small bitmapped fonts at a position that is not an exact pixel coordinate. For example when x is 50.23 while drawing a string. This happens, when I center align the text I found that I can just round the x/y positions and the problem is gone, but is there any nicer solution ?

Share this post


Link to post
Share on other sites
About what outline effects you are saying? :) You said that you use BITMAPPED fonts.
If I correct, and you use blending functions when drawing bitmap with raster position that is not an exact pixel coordinate, then you get blurring artifacts. It is not realy artifacts, it is how blending works :). but if you dont want this blurring, then the only way to archive that is to specify exact pixel coordinate.

Share this post


Link to post
Share on other sites
I would just round them, if you're using solid pixels with alpha its going to look a little wierd when a narrow line crosses a pixel boundary if you don't. The user is never going to notice that the text is 1/3 of a pixel off center, and its the solution that already works, no use spending time on a different solution.

There are methods to get sub-pixel accuracy for text (or other high-contrast) rasterization, but you'd have to write a shader for it.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Sign in to follow this