Topics

256

[Max] Resolved Bugs / motion blur on instanced geometry

« on: 2014-02-26, 22:38:47 »

Build timestamp: Feb 26 2014 00:25:43
Maxsdk version: 2013

Motion blur is not rendering on instanced objects. This affects regular (rigid) mb only. Non-rigid one, seems ok.
Although, i noticed, that non-rigid  mb sometimes causes massive slowdown, but not always. I can't see pattern yet.

257

[Max] General Discussion / Q: how to make animation more noisy?

« on: 2014-02-26, 11:57:15 »

Now, it's a strange question, i must admit it. Usualy one wants to make animations as much noise/flicker free as possible. But i, for one, nevermind some noise in my animation. In fact, sometimes i would prefer intentionally to undercook frames, to simulate real camera's high iso noise. The problem is, that noise is very static. It stays in same position over entire animation. In most cases it is desirable behaviour, but i want it to "boil". Is there a way to make it happen? Should i animate random sampler's seed, would it help?

258

[Max] Resolved Bugs / daily builds doesn't like CAT?

« on: 2014-02-22, 22:55:09 »

Build timestamp: Feb 21 2014 20:47:16
Maxsdk version: 2013

Well, this bug is quite strange. Not sure if i can describe it properly, but i'll try. Currently i'm working on scene with CAT rig and animation in it. Initially it was created and saved with A5. When i opened scene in max with daily build of Corona, i get "WTF. Error In Listbox" message. Exposure and color mapping tab of that scene looked strange (see attachment). I corrected broken values, putted back hdri in enviroment tab and hit render button. But render came out pitch black. And there was no way to make render it normal. I tried to add corona sky, corona sun, lights, adjust exposure, but nothing didn't work - total darkness. I found that only solution was to switch to other renderer and then back to corona, then fully restore all render settings. After that, scene rendered correctly, but... MUCH slower than it was in A5 (1M r/s vs 3M r/s). Now, i deleted all CAT objects and animations, saved scene and when i openned it in max with daily build, i get same wtf error and was unable to render it. But when i fully reset render settings, scene rendered with same speed as in A5 (without CAT).

I can provide this scene to Keymaster if needed, but not publicly.

259

[Max] Resolved Bugs / Photographic exposure issue

« on: 2014-02-22, 19:56:15 »

Build timestamp: Feb 21 2014 20:47:16
Maxsdk version: 2013

Ticking on use photographic exposure checkbox in corona settings/exposure and color mapping tab, resets exposure (EV) value back to default setting.

260

[Max] Resolved Bugs / custom bokeh shape shifts color temperature

« on: 2014-02-21, 13:28:57 »

Build timestamp: Feb 17 2014 23:52:11

When selecting custom bokeh shape in global camera settings, color temperature of rendered image shifts towards blue color significantly. In A5 it worked normal.

261

[Max] Resolved Feature Requests / enviroment map bluring

« on: 2014-02-17, 20:12:03 »

I've noticed that when dof is turned on, map in enviroment recieves bluring too. On one hand it's logical, but on the other, to not have control over bluring amount, except of f-stop value, is rather limiting. I'd love to see some sort of enviroment map bluring multiplier to better match out of focus area between geometry and enviroment. Is it doable?

262

[Max] Resolved Feature Requests / render log

« on: 2014-02-13, 12:02:43 »

It would be very nice if corona could write render log to file. Especially useful when rendering animation.

263

[Max] Resolved Feature Requests / render selected

« on: 2014-02-10, 16:34:23 »

I was pretty sure that this useful feature already requested, but i cannot find it via search. I woul like to know if it's possible to implement render selected feature in corona?

264

[Max] General Discussion / Bidir/vcm ignores enviroment overrides

« on: 2014-02-04, 20:43:34 »

I'm not sure if it's a bug or unsupported yet, but bidir/vcm renderer is ignoring enviroment overrides maps. Will it be addressed in next public build or sometime in future?

265

Work in Progress/Tests / romullus wips

« on: 2014-01-13, 20:50:56 »

I saw the other guy on forum posted beautiful renders with vcm: http://forum.corona-renderer.com/index.php/topic,2450.0.html and wanted to try it myself, but run into problem of excessive fireflies. Fortunately with the help of other coronauts, here in forum, i managed to find a solution. It seems that vcm don't like bluriness in reflection and refraction slots. Especially in refraction. Put some map in that slot, other than white and you'll get a horde of fireflies.
Anyway here's my attempt:

266

[Max] Corona Goodies - User Contributions / Camouflage material

« on: 2014-01-10, 13:47:47 »

I'd like to share my procedural camouflage material with you. All maps in that material are 3d procedurals. This means you don't have to assign uv mapping to your objects.
Material created in 3ds max 2014, so i don't know if it will open in older versions.

267

[Max] Resolved Feature Requests / targeted corona lights

« on: 2014-01-05, 11:49:45 »

Targeted corona lights would be very appreciated.

268

[Max] Corona Goodies - User Contributions / List of reflectance / albedo of common materials

« on: 2014-01-03, 00:29:42 »

I gathered this small list from various sources, so there may be few duplicates or even contradictions. But i think it's nice to have such list handy. Feel free to contribute to this list.

ALBEDO:

New asphalt, 0.04 - 0.05
Black acrylic paint, 0.05
Aged asphalt, 0.1 - 0.12
Conifer Forest, 0.08 - 0.15
Bare soil, 0.17
Deciduous trees, 0.15 - 0.18
"White" asphalt shingle, 0.2
Green grass, 0.25
Aged concrete, 0.2 - 0.3
Desert sand, 0.4
New concrete (traditional), 0.4 - 0.55
Ocean ice, 0.5 - 0.7
New concrete with white portland cement, 0.7 - 0.8
White acrylic paint, 0.8
Fresh snow, 0.8 - 0.9
Water, 0.03 - 1.0

Old/melting snow  0.40 - 0.80
Tundra 0.2

Soil (Dark/Wet) 0.05
Soil (Light/Grey) 0.4
Sand 0.15 - 0.45
Ice (Sea) 0.3 - 0.45
Ice (Glacier) 0.2 - 0.4

white asphalt shingle - 0.2
galvanized steel - 0.24
terra cota tile - 0.28
tar & gravel - 0.33

magnesium oxide - 0.96 [D]
alabaster - 0.92 [D]
polished silver - 0.88-0.93 (S)
white gypsum - 0.85 [D]
fresh snow - 0.75-0.78 [M]
mirror - 0.72-0.85 (S)
matte silver - 0.7 [D-S]
polished aluminum - 0.65-0.75 (S)
polished chrome - 0.6-0.7 (S)
matte aluminum - 0.55-0.6 [D-S]
white paper sheet - 0.6-0.7 [D-S]
melting snow (clean) - 0.6-0.62 [M]
matte chrome - 0.5 [D-S]
plaster - 0.4-0.45 [D]
natural silk fabric - 0.35-0.55 [M]
batten (fresh wood) - 0.35-0.42 [D-S]
face skin - 0.25-0.35 [M]
white dry sand - 0.24-0.32 [D]
yellow clay - 0.16 [D]
batten (old, weathered) 0.12-0.16 [D-S]
white wet sand - 0,11-0.2 [D]
dry asphalt - 0.1-0.18 [M]
black soil (dry) - 0.07-0.08 [D]
wet asphalt - 0.06-0.08 [D-S]
summer foliage - 0.09-0.12 [D-S]
conifer - 0.08-0.12 [D & D-S]
autumn foliage - 0.15-0.3 [D-S]
black soil (wet) - 0.02-0.05 [D-S]
black velvet - 0.01-0.03 [D]

D - diffuse
S - specular
M - mixed

269

[Max] General Discussion / hd cache problems

« on: 2013-12-30, 19:40:14 »

While working on some personal project, i encounter strange behaviour of hd cache, which i cannot resolve on my own. Its strange blobs of light. Each time it appears in different places and it doesn't goes awway with bigger amount of passes.  I tried many things with little success. The only thing that helps somehow is lowering precomp steps of hd cache to 0,1 but whole image becomes grainy.
Ofcourse, i could render image with pt+pt and forget it, but i'd like to understand what causes such behaviour. Btw, i don't know if it's related to this problem, but hd success rate is unusually low in this scene - 50-60.
Attached gifs is not animation, its one frame rendered 10 times in a row.

edit: animated gifs seems not working here. Where i could upload them?

270

[Max] Resolved Bugs / displacement with procedural maps = crash

« on: 2013-12-21, 20:24:16 »

I can put bitmaps in displacement and everything works fine, but as soon as i put proedural map in displacement slot and hit render button, max instantly crashes. Tried with noise, cellular, checker - all crashes.
max 2014, alpha 5, win 7 64bits, 4GB ram