Author Topic: dubcats secret little hideout  (Read 92667 times)

2017-11-29, 04:33:01
Reply #90

vicmds

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Every now and then I get Megascans questions. I'm posting this here, so I can link to this post.

Thanks for sharing. Curious to know what your process to mimic them would look like for their (excellent) 3d plants, since their previews are apparently all UE4. Same material setup?

2017-12-01, 16:30:34
Reply #91

dubcat

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Same material setup?

3D models ship with baked albedo+ao texture maps, so you can skip the merging part.
For Translucency Fraction I usually use a value from 0.3-0.4.
Sometimes the translucency maps work out of the box. Sometimes you have to boost the gain/reduce saturation/change the hue to taste.
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2017-12-08, 01:21:04
Reply #92

dubcat

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I noticed that I didn't specify the blending modes. The first height map blend is "Lighten", and the second blend is the lighten mix "Subtracted" from the top layer.
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2017-12-08, 09:51:04
Reply #93

romullus

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Didn't notice if mentioned before, but does blending has to be performed in linear or in sRGB space?
I'm not Corona Team member. Everything i say, is my personal opinion only.

2017-12-14, 20:40:07
Reply #94

dubcat

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sRGB space?
I need to find the max file to be 100% sure, but I think they all were linear.

----------------------------------------------------------------------------------------

I've remade the ACES Tonemapper with default settings in Photoshop.
The only thing you have to do, is to open your 32bit .hdr/.exr files in Photoshop and run the action.

Remember to leave "Highlight Compression" at 1 in Corona.

Raw



Photoshop Voodoo



ACES Tonemapped

« Last Edit: 2017-12-15, 02:19:44 by dubcat »
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2017-12-16, 21:15:43
Reply #95

bluebox

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Can this be baked into LUT file for use inside Corona ?

2017-12-16, 23:38:30
Reply #96

romullus

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Can this be baked into LUT file for use inside Corona ?
+1
I'm not Corona Team member. Everything i say, is my personal opinion only.

2017-12-18, 22:09:45
Reply #97

dubcat

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Can this be baked into LUT file for use inside Corona ?

I'll post the log LUT when the Corona log LUT loader gets fixed.

This is how it should work

Linear Render



Linear converted to Cineon log, same as Corona.



Apply tonemapper LUT



Convert back to linear



View as sRGB



But this is what we get in Corona right now, using the same tonemapper LUT as above.

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2017-12-19, 02:09:07
Reply #98

agentdark45

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Can this be baked into LUT file for use inside Corona ?

I'll post the log LUT when the Corona log LUT loader gets fixed.[/img]

Devs can we get this done in a daily build? (says the guy that has zero idea how hard this is to implement).
Vray who?

2017-12-19, 07:45:24
Reply #99

bluebox

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Can this be baked into LUT file for use inside Corona ?

I'll post the log LUT when the Corona log LUT loader gets fixed.[/img]

Devs can we get this done in a daily build? (says the guy that has zero idea how hard this is to implement).

+1 Yes please!

Or can someone who knows what to request make a feature request :D ?

BTW, thank you Dubcat for all your research !

2017-12-19, 09:41:19
Reply #100

maru

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I'll post the log LUT when the Corona log LUT loader gets fixed.
Is this blackmailing? :D

Now seriously, is this officially logged somewhere outside of this forum thread, or discussed directly with Ondra?

2017-12-19, 17:10:13
Reply #101

dubcat

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Is this blackmailing? :D

Hehehe, just want to be sure I'm sharing something that is actually working ;)

Now seriously, is this officially logged somewhere outside of this forum thread, or discussed directly with Ondra?

The devs know about it, but I've made a new mantis report.
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2017-12-21, 03:10:27
Reply #102

dubcat

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I'm compiling a tonemapper pack for you guys.
The funny thing is that all the top tonemappers out there kinda look the same on the curve, but they look so different on the final render.

Here is a little teaser.

Secret Render Engine



ACES



Camera RAW 2012 (The one I've been using for years, for compression).

« Last Edit: 2017-12-21, 04:38:44 by dubcat »
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2017-12-21, 12:57:08
Reply #103

nkilar

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What I can I say dubcat, can't wait to see what you got cooking. It is much appreciated, Sir! :)

2017-12-29, 08:23:29
Reply #104

bluebox

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Hey there Dubcat, how's work on those luts :D ? Can't wait to try them out. Thanks man !