Re: spurious lines in gs with antialiasing

[Petr M. <mi...@ph...>]

>> Well, it looks to me that it must be a bug in ghostscript -- some rounding 
>> of positions or whatever. Below is a simplest postscript code that 
>> demonstrates spurious lines in a pm3d-like image:
>
> I don't fully agree that those lines are "spurious".  Since you only
> fill-ed the paths, but didn't stroke them, there are technically
> gaps of zero pixel width between adjacent tiles.  And just like lines of 
> width zero are not exactly the same thing as no lines at all, gaps of width 
> zero are not the same as no gap at all.  For this to be a meaningful test, 
> the paths could have to be both filled and stroked.

It does not help. Try to play with /F in the attached example. Also added 
blue background. And tested with different direction of stacked boxes.

> Fill-ing and stroke-ing gives much better results: the lines occur less 
> frequently, and with less intensity.

I don't think so. Try to render the result into a png file (command in my 
previous mail), not onto x11 display.

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