Option to alpha bleed images

[Kampfkarren]

This might be out of scope for Tarmac, but there's never a case where I want an image with transparency uploaded but not alpha bled.

@Quenty released an article titled "Fixing images in Roblox UI". In this article, he explains how due to a bug, images with transparency form ugly pixels around them. The solution is to change the RGB values of the alpha to coincide with the border.

XAXA released a tool for this that I use regularly. It would be very useful if Tarmac could automate this process.

[Quenty]

I second this proposal, would love to see this. It's a primary aspect of managing assets on Roblox.

This would not to be configurable. We probably want to look at webpack to see how to best handle this configuration.

[LPGhatguy]

Tarmac currently does alpha bleed images that are packed into spritesheets. There's an open issue to extend this to all images: #20.

Going to close this as a duplicate, feel free to reopen if I missed something!