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Question by AlwaysSunny · Jan 14, 2012 at 07:03 PM · terrainshadows

Shadow artifacts at terrain seams

Edit:

Issue solved; neglected to call Flush() on EACH terrain after stitching. At least, so far this seems to have taken care of this error, since I can no longer reproduce it. Please reply with additional info if you care to contribute, or if you suspect I might be wrong about the error's origin. Thanks.


As the topic suggests, when I reposition / regenerate / restitch terrains together, everything works flawlessly, except for these rotten artifacts that only ever appear at the corners of my terrains.

The occurrence of these artifacts seems entirely random to me. They appear when a terrain is repositioned/generated/stitched to its neighbor, but not every time.

Further, they disappear when the camera gets close to the corners, and remain gone even when the camera is pulled away again. The distance at which they disappear seems to be consistent, if that helps narrow things down.

I'm using only directional and spot lights. Black fog, no ambient light, and no realtime shadows whatsoever (Indie). The quality on render settings In Editor is cranked up to "Fantastic." Also, I am setting up the neighbors appropriately using SetNeighbors.

Any clue about this? I've got no idea what to attempt to do to prevent this issue. Here's an image to illustrate:

alt text

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