Author Topic: Corona Curvature Map playground!  (Read 6814 times)

2022-04-12, 11:47:38
Reply #30

marchik

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Thanks for the reminder, but I don't think this is possible to be added to V8.

(Report ID=CRMAX-1255)

thanks Maru for the answer and for your attention, I remember that you logged the request a long time ago, just each time setting up the shader where I need a clear mask around the edges, I am happy to remember that now we have curvature map and every time I get upset when I can’t achieve an acceptable result :D

2022-04-12, 13:22:03
Reply #31

maru

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.. While you're here Maru. Can the curvature shader be used with displacement for displacing edges? I can't seem to get it to work..

I don't think so. It's a render-time effect, like AO.
You can do this for example with Corona Distance, because it is evaluated before rendering. But some other effects aren't.
Other than that, even if we would somehow make it work, then how would you apply a curvature map to a displaced surface? :)



Thanks for the reminder, but I don't think this is possible to be added to V8.

(Report ID=CRMAX-1255)

thanks Maru for the answer and for your attention, I remember that you logged the request a long time ago, just each time setting up the shader where I need a clear mask around the edges, I am happy to remember that now we have curvature map and every time I get upset when I can’t achieve an acceptable result :D

Sorry, I'm afraid I can't help here. :(
Maybe this would be possible using a Layered Mtl? (the top layer with Corona Curvature would not have any bump)
Marcin Miodek | chaos-corona.com
Chaos Corona Support Team Lead | contact us

2022-04-12, 13:31:11
Reply #32

Rhodesy

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.. While you're here Maru. Can the curvature shader be used with displacement for displacing edges? I can't seem to get it to work..

I don't think so. It's a render-time effect, like AO.
You can do this for example with Corona Distance, because it is evaluated before rendering. But some other effects aren't.
Other than that, even if we would somehow make it work, then how would you apply a curvature map to a displaced surface? :)




Thanks Maru. that's a shame, I was hoping that it wasnt a post effect like AO and could be used as a mask in a layered mat with a displaced material only effecting the edges where a curviture shader is making a mask. Never mind. maybe v9 might find a way! Cheers

2022-04-12, 14:05:29
Reply #33

Dionysios.TS

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Hi to all!

I am having some free time today and I am testing the Curvature map.
I've notice one thing, the map generally produces a blur result so the materials or colors it mixes are always mixed softly. Whatever values I use, the result is always soft/blurred.
I am trying to achieve something like the images I've attached: Curvature_Example_01 and 02. My result (3ds_Max_Screenshot) is always too soft! I used on purpose the light blue and red materials and where the red is applied by the curvature map,
is now pink. In a few words, I can't achieve a very net and clear curvature map result!

Is this a limitation now? Am I doing anything wrong???

Thanks,

Dionysios -

2022-04-12, 14:38:20
Reply #34

Dionysios.TS

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FYI, applying a color correction map on the top of the curvature map boost up a lot the effect!

See attached example...

Thanks,

Dionysios -

2022-04-12, 14:51:39
Reply #35

Dionysios.TS

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Here is a result which is close of what I would like to achieve but is possible only by applying a Color Correction map on the Curvature map.
I am not sure is the corret way to do this thing in any case...

Thanks,

Dionysios -

2022-04-12, 15:37:40
Reply #36

Dionysios.TS

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Here is another result by using a cellular map and always color correction on top of the Curvature map.

Thanks,

Dionysios -

2022-04-12, 16:01:37
Reply #37

Dionysios.TS

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Last example for today, I swear! :)

2022-04-12, 16:29:42
Reply #38

maru

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To get sharper edges, you can boost the "color spread" and "directionality" values and/or plug your Curvature map into a 3ds Max "Output" map and play around with the curve there.
Marcin Miodek | chaos-corona.com
Chaos Corona Support Team Lead | contact us

2022-04-12, 16:33:29
Reply #39

Dionysios.TS

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To get sharper edges, you can boost the "color spread" and "directionality" values and/or plug your Curvature map into a 3ds Max "Output" map and play around with the curve there.

Yes and thanks, I actually find out that an additional Output channel is needed to do it right!

Thanks agian,

Dionysios -

2022-04-13, 06:18:26
Reply #40

marchik

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Sorry, I'm afraid I can't help here. :(
Maybe this would be possible using a Layered Mtl? (the top layer with Corona Curvature would not have any bump)

yes, but then the meaning of its use is lost, I need it as a mask and not as a color, I hope this will be implemented in the future, in any case, it is better with curvature than without it :D