Houdini environment hdr Cop2 question.

[jtm]

Hi,

First off, I love this software. It's amazing.

And perplexing. I hope the penny will drop soon and I have a eureka moment.

My question: I'm attempting to beef up the contrast on a HDR by making a COP2 network (which I renamed cop) and doing a levels adjustment. I then set the scene's environment light map to reference that cop2 network (as it's environment map). As per a tutorial I viewed it suggests typing in op:/obj/cop - in the online tutorial this works perfectly - yet when I try this in 15.5 (apprentice) it renders the sky in it's texture-not-found dull pink colour (which is nothing like the HDRI map). Any help or suggestions welcome. Thanks.

 

I guess the question boils down to why is the OP expression not calling the cop network.

 

The original tutorial (the hdri bit starts at 21.40)

 

 

Edited September 27, 2016 by jtm
clarity

[bonsak]

Hi

The pink color sounds like Houdini can't find the texture. Make sure you have the correct path to the correct node in your COP network. Where is your COP net stored?

-b

[jtm]

It's stored in obj

 

Another thing: In the tutorial when he is entering the op expression in the environment map field houdini throws up options which it doesn't do when I enter the same data. So houdini isn't recognising the op expression. Hmmm.

[bonsak]

And your path does point all the way to a node in the COP net? Just tried it here with op:/obj/cop2net1/OUT and this works. Off course your path could be different.

-b 

[jtm]

I tried again and suddenly got it working - naming the cop2net to "cop" was a bad idea I think. Thank you for the help. Much appreciated.