In Blender 3.3.0 it is possible to export vertex colors and alpha into Unity if very specific guidelines are followed. Remember Face Corner and Byte Color must be active in the Color Attribute in order for it to encode into FBX.
LITERALLY couldn't find the answer to my question ANYWHERE ELSE. I spent HOURS looking into export my vertex colors into UNITY and NO ONE else had the answer export for your channel that only has one subscriber! THANK YOU. YOU SAVED MY DAY! THANK YOU! SUBBING!
Did YOU JUST save my life? yes you did. Thanks so much man. scrambling to scrape the barrel of my Unity Knowledge for a game jam this weekend, lmao. THANKS SO MUCH.
This is amazing, thanks for the tutorial! I will definitely be coming back to this as I rarely use blender (so I forget how things are done) but when I do, I often find myself painting vertex colors and never found a good guide for it!
Thanks for the explanation and details. This helped me decide that 3.3 is just broken in my case. - Even though I have the Color Attribute node to supposedly set the color and alpha of the material, the vertex colors are not visible in neither Material Preview nor Render Preview modes. (Your example of setting the Alpha doesn't work for me. The Color Attribute node returns nothing at all.) - The Vertex color is only visible in Solid Mode, but even THAT is not working half of the time. For some reason, I can only see the vertex color consistently in Sculpting mode. In Layout, Modeling, UV Editing, Shading, etc. the vertex color were visible only if I'm in Vertex Paint mode and even that mode seems to return washed out colors. (Black is dark gray and Whites are light gray) - While in Vertex Paint Mode, I can only set vertex color while in Face selection (mask) mode. The Vertex selection (mask) mode doesn't work at all. Also, the paint brush doesn't paint Vertex color either (which is kinda stupid considering that's the main tool). The paint brush does work in Sculpting mode though. As a proof that it's broken (for me), the exact same steps in 2.83 works 100%. Due to this, I'll stay away from 3.3 for a long time because I'm the kind of dev that make heavy uses of vertex color for optimization and masks references in the Shaders I write in Unity.
What color space are you using? because Linear represents colors incorrectly, gamma works, but it's old, most projects use linear nowadays and no idea how to export fbx to account for that.
I'm looking for how I can export vertex colors into unity because they are all coming over grey for me. It seems like a good tutorial for painting but the export part was like 3 seconds, any advice?
@@greasemonkey6672 Thank you for answering. Unfortunately I do not know what you mean by having "blender verts set up" means. I see all the verticies, but I don't know what to do with them, despite my best research.
The way Nodes work is they overwrite the data. You would have to get the painted data from the named Attribute Node "Col", "Color", "Attribute", or whatever you named your Color attribute when you painted. Once you get that data, you can multiply it (mix) by your programmatic color.
