Weird artifacts with parallax occlusion mapping in landscapes
I've been working on a sand material and figured that a good way to get the detailed minute variations in the sand would be through POM.
The results I've had are a bit weird in that from a distance or at most viewing angles the effect seems okay, but at others it completely breaks down. The second picture is the easily noticeable example from the results below:
Is this just an inherent weakness of POM or am I doing something wrong? Here's my setup.
I am also explicitly calculating mips for the normals as mentioned by Ryan in the training livestream.
It should also be mentioned that I am using a Landscape material in this situation so would I need to do anything differently?
asked Jun 30 '16 at 08:39 AM in Rendering
Can't see the artifact clearly in the screenshot,but if what you are mentioning, is straight horizontal line of blurred texture, that happens when Z axis position of camera and pixel(in tangent, or world space) is same or nearly same. It can't happen on a flat surface, but for landscape, this can manifest itself on high slopes. You can make your POM fade out and relatively short distance from the camera to minimize visibility of the effect, but the problem cant be cured completely.
answered Jun 30 '16 at 09:05 AM
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