How to get input on the arbitrary draw event data?

Hi all

I'm trying to draw a histogram on an arbitrary parameter (such as the effect of 'Levels'). Part of the draw is good, but I have a problem with the data in the input layer (param [0]).

All I have to do now is read the entry about the event draw arbitrary data. But there is not the input on the draw event pointer. So I called the PF_CHECKOUT_PARAM() function to get the input data, and it works!

When I test in AE, I created a layer A, and added some color correction effects to the layer before my effect added A layer. The problem is the input layer that read my effect is not the result of the previous effects that I applied before.

Has any way to read the latest entry in the arbitrary event data?

Thank you.

the result of caching is a smart thing to do, but as you mentioned, when the

the user sets the controls in a State that AE has already cached the image

for, any rendering happens, and your user interface crashes on an irrelevant screen.

(as is the case with 'levels' (or at least was))

You can use PF_GetCurrentState PF_HasParamChanged during a draw event to

know if your plug-in State param has changed sine the last call to draw.

If so you can't, for a new record using PF_OutFlag_FORCE_RERENDER

Tags: After Effects

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