Getting Alpha out from Tile Sampler Color node

[Ayush Bakshi]

Hey people! =D

The pattern input I'm using in 'Tile sampler color' holds RGBA data. The output from the node however doesn't come with alpha (white alpha). Is it normal or is there a way to get the Alpha? 

If user puts a color in BG input then it works fine within the Tile Sampler Color stating that the node does holds Alpha data. How do I get it out?

In the end, I want to send the output in Base Color channel without the black background.

I can take the color output from Tile Sampler and convert it into grayscale → Apply levels etc to get a mask for Alpha merge node but.. it's not the most accurate way.

I've read that splatter shape is more apt for such scenerios. Unfortunately I've set up a huge part of my tool around tile sampler node :')

Thanks!

[davescm · Accepted solution]

Make sure the Tile sampler has an input with Alpha 0 connected to its Background input socket. You can then use an Alpha split node to extract the alpha

Dave

[Cyril Dellenbach · Accepted solution]

In addition to the solution Dave mentioned, you can directly set up the Background alpha to 0 in the Tile Sampler parameters.

The result will be strictly the same, but it's still one less node.

Best regards,

[davescm]

Trust me to overcomplicated it 😀

Dave

[Ayush Bakshi]

Thanks both! Just what I needed.