Alpha Channel: Want a gradient blend fade of transparency using Targa with alpha Channel

Questions & Answers
1

I have a cone of light that I want to use for a lighthouse:

Using alpha channels with a grey to white gradient shape in the alpha channel. I am using photoshop to create rgb texture with a alpha channel and saving as a targa file.

I attempting changing the shader in Unity to transparent/cutout/diffuse but that proved unfruitful.

I want the rotating cone to start as visible and fade to invisible.

Made and exported to fbx using maya

2

You don't want to use cutoff, just use the regular transparent/diffuse. Cutoff literally clears any pixels with an alpha below a certain threshold. Using the regular transparent. The pixels are alpha-blended to be laid over the current image.

3

I ended up using the material particle/alpha blended for the light cone and that gave me the desired effect although I not sure if it was the right approach