Setting Alpha to 1

Sometimes we just want to make sure alpha = 1. We don’t have a TOP that does this specifically, but there are two easy ways:

Level TOP - on the RGBA page, set Low A to 1.

Reorder TOP - set Output Alpha menu to One.

and hey I found more:

Channel Mix TOP - set the 4th number of the Constant parameter to 1.

Transform TOP - Background color to 0 0 0 1 and turn on Comp Over Background Color.

Chroma Key TOP - don’t need to alter any parameters!

Noise TOP - set Amplitude and Offset to 0, believe it or not!

to get more ridiculous:

Text TOP - set Background Alpha to 1. and Channel Mask RGBA: off off off on.

Threshold TOP - Alpha menu to 1 and again Channel Mask to off off off on.
setAlphaToOne.tox (830 Bytes)

cool post, thanks.

From middle-clicking on the TOPs, it looks like chanmix has the fastest cooking time. (less than a millisecond)

However, if you are using one of the others anyway for something else, then it’s good to know all the alternatives!

rod.

Cook times for TOPs don’t really reflect how long they take (since they are done on the GPU asynchronously), but having a low cook time is good just for the CPU usage.
But ya, chanmix and Reorder are probably the faster ways to do this (Chroma Key is likely the slowest).