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Need help understanding transparency in materials from images
I have an issue where I still see some parts of my images that I am expecting not to, and could use some help to fix/understand it.
I went into Photoshop and created a 100px square image with a transparent background. The image is a simple, rounded square outline. That's it, super basic. I saved the image in PSD format, and then dragged it into my project.
I then created a new material, dragged the PSD image to the Albedo field, and changed the rendering mode to transparent.
I added a Quad to the project, and assigned the material to the quad.
This is an new, empty project, and the only things added so far are what I described.
If you look at the images, you will see that the Quad shows up and we can see the rounded square, and it is mostly transparent. However, you can still see the square outline of the quad. This does seem to go away if I remove the lighting, so maybe it's a reflection issue?
I don't want to be able to see the parts of the quad that should be transparent, they should be invisible at all times. How do I set this up properly to do that?
Answer by toddhdavis · Nov 28, 2021 at 06:53 PM
I was able to figure this out on my own, so posting here just in case someone else needs the answer...
Go into the Material properties and uncheck "reflections" and "specular highlights"
Answer by Pangamini · Nov 29, 2021 at 02:43 PM
You need to switch from Transparent to Fade. Transparent materials mean that light is still being reflected at some angles. Like a glass. Even if it's pretty invisible at perpendicular angles, you can see it being reflective at other angles. This is physically correct. Now Fade mode ensures that the material disappears completely at alpha = 0
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