Topics

46

[Max] Bug Reporting / Render stops when session is locked

« on: 2017-05-06, 09:48:58 »

Hello,
Twice i got this problem :
I start an animation render, then i leave the Pc using "Windows+L" session lock shortcut...
when i come back, the current frame took hours to complete instead of 2-3 minutes...

I could imagine in a locked session, Corona stops render (i've always done this with maxwell / vray etc... never stopped anything...)
BUT, it did not act like if the render were stopped during the lock then resumed back... it just seams to render far too long...
For ex : 1 hour ago i log into my session, and the first frame (started yesterday at 6pm) was ok in 3mn, the second also, but the 3rd was started a 4am this night, and seams to have redered for more than 4 hours... of course this frame is rendered in 3mn also when i restart it without locking the session...

I tried both local and backburner with same issues...

I could let my PC logged in, but i do prefer to lock the session to prevent any chance for someone to use it...

Any idea ?

47

[Max] Feature Requests / Transparent pixel rendering...

« on: 2017-04-24, 18:45:06 »

Hello there,

As some may know i'm a lot involved in "configurators" projects, where i render a lot of PNG rgba files to let the final user choose colors for a product
http://configurateur.billard-toulet.com/

As you may have noticed, in some color cases, dark on dark, or light on light, for ex. we get an awfull contour, due to the arbitrary 128grey choice for the background (best fit for all-case solution)...
Let me show you some quick tests :

dark on dark effect - 128grey background


light on light effect - 128grey background

What would be great is to be able to "render" transparent pixels... Sort of premultiplied alpha, but not during the saving picture process (it already exists when PNG is used for ex.),
but the Photoshop-way :


Screenshot of the photoshop "draw - onto - transparent pixels"...


... and pasted onto my background picture...

Now let's speak about coding this one : i'm not a coder guy, but my logical think about it would be :
I'm the CPU, i'm rendering the picture... For that pixel being rendering, what's about alpha : is it black or is it white ? (or grey)...
If the alpha is white, ok then i go on rendering it...
If the alpha is 100% black, ok i ignore it and set this pixel to transparent... Really transparent, not letting the 3D background / direct visibility override color...
If the alpha is somewhere in between, ok i write the premultiplied alpha value onto it, again not on the background / direct visibility color, but on transparent way...
Just like Photoshop does when we draw on empty layer...

That would prevent contour, and more than that, that would maybe speed up the rendering of the scene, because black-alpha-ed pixels would be ignored...

What do you think of that ? Is it possible ?

48

[Max] Resolved Feature Requests / non-relevant alpha needed...

« on: 2017-03-27, 19:21:37 »

Hello there,

Corona has alpha forced to black, or forced to white, but how can we set alpha ignored for an object ?

I mean, sometimes we need an object to be alpha-seen regardless of the alpha of another object.
For that Vray has alpha going from -1 to 1 :
-1 : forced black
0 : ignored
1 forced to white

Regards

49

Gallery / Billards tables

« on: 2017-02-16, 23:00:21 »

Hello there,

We used Corona to render more than 152 000 png images for this online configuration tool :
It lets you more than 210 000 000 000 (billions) differents possibilities ;-)

http://configurateur.billard-toulet.com/

Some other 3D works : http://www.chromelight-studio.fr

50

[Max] I need help! / Better quality needed in "For compositing" Shadow catcher...

« on: 2017-02-16, 22:47:29 »

Hello,
I'm trying to get some objects on a pure white support for a customer...
As i know albedo / diffuse would never go above rgb 240-242, i'm using a shadowCatcher material so i can save png rgba files, then photoshop let me put a pure white under it, and i get shadows onto it...

Problem is that the "for compositing" alpha stays grainy, even at 100 passes...

Im using an HDRI for main light, so i can't really raise the subdivisions...

Any help would be usefull, thanks.

51

[Max] I need help! / [solved] multiple versions...

« on: 2016-12-15, 21:53:47 »

Hello there,

I'm planning to go from 1.4 to 1.5, but i know there are some subtles differences...
So my question is quite simple : can i install both 1.4 and 1.5 and simply choose the one i need in the 3dsmax's renderer drop list ?

I've started some scenes some months ago (version 1.4), and i'd like to finish the project with 1.5, without any bad surprise, so i'd like to test...

I've installed 3dsmax 2017 and Corona 1.5.2... activated... ok.
And i've kept 3dsmax 2016 with corona 1.4 for testing purposes, but i could not activate 1.4, i guess once 1.5 is activated, i can't activate another one.. even if on the same system...

Any help would be nice.

Regards.

52

[Max] I need help! / Material Sample Scene

« on: 2016-09-06, 14:53:17 »

Hello there,

Does anybody know where to find the material sample scene, the one shown in some tutorials, that looks like the Vray one's... ??

53

[Max] Resolved Feature Requests / Colimo support

« on: 2015-12-14, 22:33:20 »

hello guys,

I guess you know colimo from Motiva software, it is a fabulous way to manage and create several versions of a picture, changing lights, materials and so on on already rendered image...

It is manually interfaced with Vray and MentalRay, and fully interfaced with Thea Render... A simple toggle clic on "repaintable" and you can save as colimo format and play with it...

Corona do need a support for that soft !!!

http://www.motivacg.com/en/colimo/

54

[Max] Resolved Feature Requests / Mask seen in reflexion / refraction

« on: 2015-12-14, 17:55:01 »

Hello there,

I'm starting a new project, a nice one (Babyfoot games)... And i'd prefer to render it with Corona (fast, nice, i felt in love with it)...
My 2 other historic renderes are Maxwell (too slow for this project), and Vray (not so fast & nice in my opinion)...

Problem is that i'll HAVE TO get masks, lots of masks, and i must admint that Vray's option "affect all channels" plus multimatte element is a must have !

It renders the alpha objects taking account of reflexion / refractions...

Can Corona render that ? Will it be able to in a next release ?

here is a picture that explains what i mean...



Regards.