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Question by leeprobert · Dec 06, 2016 at 11:41 AM · blenderfbxfbximporter

Import high-res sphere from Blender into Unity and add Material

I have a Stereo Skybox demo project for VR and I'm using two spheres (left & right eye). I have a material with the 360 pano images in it, and also a shader that culls the outer mapping and allows me to look around the inside of the spheres. This all works great; but the sphere geometry is low-res and is causing distortion. To try and resolve this, I imported a sphere from Blender as an FBX, and tried to add my material and shader from Unity to this new geometry. For some reason, the material does not preview, and is not rendering at all. The structure of the objects looks to be identical. The only issue is that one is the FBX sphere, and the other is a Unity primitive.

What am I doing wrong?

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avatar image AlwaysSunny · Dec 06, 2016 at 11:48 AM 0
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Unless they're doing something nontraditional with projection in their shader, it sounds like you just didn't uv-unwrap your blender sphere. If that's the case, unfortunately, this is a pretty deep topic. There are multiple ways to uv-unwrap a sphere, or to project skyboxes. It really depends on what's going on under the hood of their approach.

If possible, open their low-poly sphere in blender, subdivide, smooth, repeat as desired. This should preserve their original unwrapping metadata and add resolution. If for some reason this file can't be opened with Blender, I'd email the document author to request a high-quality version.

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avatar image leeprobert · Dec 06, 2016 at 01:05 PM 0
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I found a High-res Sphere here: http://www.ignishot.com/phpBB3/viewtopic.php?t=3094 I imported the FBX and used the geometry straight; it worked. I'm not sure what this chap did in Blender when he exported the Sphere. I'd still love to know for the future.

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