OTOY Forums

Hi, I have some decal materials that use texture displacement and opacity maps. In some cases I have this artifacts that you can see in the image, they have the shape of a geometry triangle and they kind of show us the background, as you can see. I think that they are transparency issues. I dont know if the mixture of opacity and displacement is causing this and if you have reported other simimlar bugs and know how to solve it. Besides, the decal is not close enough to the road so it is not a overlapping issue, this continue happening even if I move the decal.

Yeah, I have the same issue. Behavior slightly changes when you alter the import options of the displacement texture, particularly related to the alpha channel. It seems that texture displacement does not interpret correctly the alpha channel, since for transparent regions it should just ignore the displacement and show the existing geometry in the scene behind it. Instead it is removing some triangles in the background of the scene, which is a totally unexpected behavior. Falling back to vertex displacement requires huge amount of geometry tesselation which is impractical. At least for us, fixing this can save a lot of effort. Thank you!

manusd wrote:Hi, I have some decal materials that use texture displacement and opacity maps. In some cases I have this artifacts that you can see in the image, they have the shape of a geometry triangle and they kind of show us the background, as you can see. I think that they are transparency issues. I dont know if the mixture of opacity and displacement is causing this and if you have reported other simimlar bugs and know how to solve it. Besides, the decal is not close enough to the road so it is not a overlapping issue, this continue happening even if I move the decal.

Would it be possible to share the material and scene with me?

Here it is: https://drive.google.com/file/d/1g7i4sD ... sp=sharing