JPGargoyle wrote:
>
> In some places the texture lines are jagged or incomplete, and the left side
> of the sphere is a mess.
Copy & paste from newusers:
This was rendered with +a0.0 +r9. http://luxlab.com/tmp/aa.png
Rendered at 500% resolution +a0.3 +r3, Gaussian blur 2.5 pixels in
Photoshop and resampled (nearest-neighbour) to final size.
http://luxlab.com/tmp/aa_hq.png
The most important part is the Gaussian blur. I used 500% resolution
just to get those very thin lines. For normal a scene 200% to 300% and
1 to 1.5 pixel blur radius should be enough. The 50% blur radius seemed
to be the minimum required to prevent visible aliasing. The image will
look soft. Sharpening filter will just bring back the the jagged edges.
It's a delicate balance between artefact free and sharp image.
I feel the Gaussian filter produces optimal anti-aliasing. It's so good
it's banned from IRTC :D The example image has maximum contrast. When
local contrast in image is lower less filtering is needed. The default
POV-Ray aa is enough for low local contrast.
This scene and camera position are less than optimal for radiosity
demonstration :) Try lowering the camera near a corner. The contrast
ratio in this scene is naturally low. If you don't wan't to post-process
drop assumed_gamma or use higher value as a kludge to increase contrast.
_____________
Kari Kivisalo
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