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I want to know if there's a way to create the following material: A spherical gradient that is red in the center and gets transparent farther away from the center. I want to apply such a material to a plane object.

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As Rob suggests you can use a Gradient node in Quadratic Sphere mode:

enter image description here

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You will have to make changes to get it how you want. I'm not sure what changes exactly, sorry, but this might work for you. GL

enter image description here

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  • $\begingroup$ Someone will probably have a better/simpler solution. I just had this image handy, lol. You can Google search for "gradient material in blender" and switch the search type to Images, you'll find something that works : ) $\endgroup$ Jun 27, 2019 at 10:46
  • $\begingroup$ Yeah thanks, this was almost what I wanted actually. Except that instead of the transparency being in the inner part of the circle I want it to be on the outer part. In short exactly the inverse of the above transparency effect. I tried to google it, unfortunately I didn't get any images corresponding to what I wanted. Do you know how to achieve the inverse of the above? $\endgroup$ Jun 27, 2019 at 10:57
  • $\begingroup$ Also look at the "Gradient Shader" set to "Quadratic Sphere" $\endgroup$
    – rob
    Jun 27, 2019 at 11:04
  • $\begingroup$ Flip the transparent shader and the other shaders : ) Oh and it works in Cycles, as is, but for Eevee, you need to set the material blend mode to Alpha. GL $\endgroup$ Jun 27, 2019 at 11:14
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    $\begingroup$ As rob said, you can mix a shader with a transparent shader and use the Gradient Texture node as the mix factor. Just remember for Eevee to change the material settings so it uses the alpha. It seems to work well : ) $\endgroup$ Jun 27, 2019 at 11:21

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