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Iago Diogo Vasconcelos Mota (IagoMota)
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User Since
Jan 6 2019, 4:50 PM (127 w, 2 d)

Recent Activity

Fri, May 21

CRAZ (123ertyy) awarded T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain a 100 token.
Fri, May 21, 9:20 PM · Nodes & Physics, BF Blender

May 8 2021

Luc Revardel (lrevardel) awarded T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain a Burninate token.
May 8 2021, 7:40 PM · Nodes & Physics, BF Blender

Mar 3 2021

Nitin Sharma (finalflasher) awarded T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain a Burninate token.
Mar 3 2021, 6:24 AM · Nodes & Physics, BF Blender

Feb 1 2021

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T81017: Mantaflow: Noise doesn't follow smoke.

Unfortunately, I'm not noticing a strong difference with Adaptive Time Steps disabled (in 2.91 Beta). I'll explore this with other simulations, though, to see if the results are any different. (upres is at 2 for this one)

Feb 1 2021, 11:07 PM · Nodes & Physics, BF Blender

Nov 6 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain.

Little update here. I just tested this example file in 2.92 9a7da1242d9f, and the behavior seems a lot stranger. On the left, you see the imported VDB smoke, which hasn't been scaled or rotated, only translated to the left of the original simulation.

Nov 6 2020, 2:45 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74559: Adaptive Domain creates lines in smoke.

Yep, the example scene is looking a lot better! There are still some occasional lines, though:

Nov 6 2020, 2:28 PM · Nodes & Physics, BF Blender

Oct 23 2020

Iago Diogo Vasconcelos Mota (IagoMota) awarded T73201: New volume object type a Love token.
Oct 23 2020, 2:20 PM · Nodes & Physics, BF Blender

Oct 6 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T81017: Mantaflow: Noise doesn't follow smoke.

A small update here. I was experimenting with different resolutions; and it certainly improves in quality as the upres factor is increased, but the noise still fails to follow the movement of the original simulation.

Oct 6 2020, 4:01 PM · Nodes & Physics, BF Blender

Sep 30 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T78738: Mantaflow - Enabling "Noise" breaks fast-moving smoke.

@Richard Antalik (ISS) Yeah, I'm not sure if these are related issues, so I'll keep them separate for now to avoid confusion. Thanks!

Sep 30 2020, 2:52 AM · Nodes & Physics, BF Blender

Sep 25 2020

Gad (gadas) awarded T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain a Burninate token.
Sep 25 2020, 3:04 AM · Nodes & Physics, BF Blender

Sep 21 2020

surya kiran reddy (Dir-Surya) awarded T81017: Mantaflow: Noise doesn't follow smoke a Love token.
Sep 21 2020, 10:25 AM · Nodes & Physics, BF Blender
surya kiran reddy (Dir-Surya) awarded T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain a Burninate token.
Sep 21 2020, 10:24 AM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T81017: Mantaflow: Noise doesn't follow smoke.
Sep 21 2020, 3:43 AM · Nodes & Physics, BF Blender

Aug 11 2020

Iago Diogo Vasconcelos Mota (IagoMota) created T79711: Mantaflow: OpenVDB glitches due to Adaptive Domain.
Aug 11 2020, 4:12 PM · Nodes & Physics, BF Blender

Aug 5 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74763: Mantaflow: Animating smoke color affects existing smoke.

By the way, I'm not encountering this issue anymore in blender-2.91.0 deb76548c108. For me now, the color changes seem to only affect newly emitted smoke, and this also applies to how it's rendered in Cycles. Can anyone confirm this?

Aug 5 2020, 6:07 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T73838: Mantaflow: Viewport shading of gas changes as "Initial Temperature" is modified..

Yep! Seems to be fixed now. Thank you @Sebastián Barschkis (sebbas) !

Aug 5 2020, 6:04 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74078: Mantaflow: Flame not working correctly when animating a Fuel value..

@Sebastián Barschkis (sebbas) Alright, I'm not encountering the issue anymore in 2.91.0 deb76548c108. Fuel seems to be animating properly now, at least for me.

Aug 5 2020, 6:04 PM · Nodes & Physics, BF Blender

Jul 27 2020

Iago Diogo Vasconcelos Mota (IagoMota) awarded T73324: Particles Nodes a Love token.
Jul 27 2020, 3:18 AM · Nodes, Nodes & Physics, BF Blender

Jul 23 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T79201: Mantaflow: Fluid guides don't affect simulation..

By the way, here's the file I used for the 2.82 demo, just in case.

Jul 23 2020, 7:32 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T79201: Mantaflow: Fluid guides don't affect simulation..
Jul 23 2020, 7:31 PM · Nodes & Physics, BF Blender

Jul 22 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T78738: Mantaflow - Enabling "Noise" breaks fast-moving smoke.

@Sebastián Barschkis (sebbas) Thank you for the update! Unfortunately, I'm still seeing the problem in 2.90.0 607d745a79e0 . Though, in my opinion, it already seems less pronounced than in 2.83.2.

Jul 22 2020, 3:32 AM · Nodes & Physics, BF Blender

Jul 15 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T76685: Force field can't expand smoke evenly..

Sorry for no updates here in the past months! I haven't ever been able to get this kind of expansion to be regular before or after Mantaflow was released, so I don't think this is particularly a Mantaflow bug. Also, I tried this in 2.90.0 and it looks like some smoke is moving into the emitter, despite the Force force-field trying to push it out.

Jul 15 2020, 8:40 PM · Physics, Nodes & Physics, BF Blender

Jul 14 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74763: Mantaflow: Animating smoke color affects existing smoke.

Just including a silly test of the Cycles renders. Nothing seems to have changed there, regardless of cache types. (blender 2.90.0 f319eec88186 )

Jul 14 2020, 8:09 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74078: Mantaflow: Flame not working correctly when animating a Fuel value..

This bug seems to be behaving a bit differently in 2.90.0 f319eec88186 . For one, the fire completely stops moving (but doesn't necessarily disappear) when Fuel is set to 0, while the rest of the smoke progresses at a normal speed.

Jul 14 2020, 7:40 PM · Nodes & Physics, BF Blender

Jul 13 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T74763: Mantaflow: Animating smoke color affects existing smoke.

Oh, thanks for reminding me to check this one! Unfortunately, it looks like it got more complicated. In both 2.83.2 and 2.9 Alpha (f319eec88186), the bug is gone when it's simulated using Replay type cache (though with several glitches before the first keyframe, probably related to caching). But when it's simulated in Modular or Final/All, the bug is still there. The color changes won't be visible in the viewport, but, if rendered in Cycles, the whole plume of smoke changes color at once, instead of just the newly emitted smoke.

Jul 13 2020, 4:24 AM · Nodes & Physics, BF Blender

Jul 9 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T78738: Mantaflow - Enabling "Noise" breaks fast-moving smoke.

For some reason, in the newest build of 2.9, the simulation isn't at all visible after baking the noise, so I tried this on a previous build instead: 2.90 - c8060a78fdf3 . And, yes, unfortunately the issues persist.


The smoke moved a lot slower in 2.9, so I ended-up using a wind force-field to really accelerate it.
By the way, these issues were also present in 2.82.0

Jul 9 2020, 3:59 AM · Nodes & Physics, BF Blender

Jul 8 2020

Iago Diogo Vasconcelos Mota (IagoMota) created T78738: Mantaflow - Enabling "Noise" breaks fast-moving smoke.
Jul 8 2020, 4:07 PM · Nodes & Physics, BF Blender

Jul 6 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T69870: Adaptive Domain causing 'twitches' in gas position when noise applied.
Jul 6 2020, 6:51 PM · Physics, BF Blender

May 16 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T73837: Mantaflow: Effect of forces increases over time..

@Everton Schneider (eversimo) You're right, 2.90 alpha seems to have the issue fixed with force fields. If smoke/flame Vorticity are the only properties influenced by this bug, it's probably not significant anymore, in my opinion. So, I'm glad to see this pretty much resolved!

May 16 2020, 5:16 AM · Physics, Nodes & Physics, BF Blender

May 13 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T73837: Mantaflow: Effect of forces increases over time..

@Everton Schneider (eversimo) That's strange. I just tested in 2.83 50ef801a79b5, the issues still persist there.

May 13 2020, 6:19 PM · Physics, Nodes & Physics, BF Blender

May 12 2020

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T76685: Force field can't expand smoke evenly..

An unqualified guess here, so please correct me if I'm wrong! But I suppose this might be due to Blender treating this as if no more pressure is being added to the smoke. So, despite the insistence of even velocity, the smoke can't expand properly. However, due to the constant emission of new particles or the fact that Flow Behavior is set to Inflow, I believe it follows that more pressure should be added over time.

May 12 2020, 4:34 PM · Physics, Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T76685: Force field can't expand smoke evenly..
May 12 2020, 4:32 PM · Physics, Nodes & Physics, BF Blender

Mar 14 2020

Iago Diogo Vasconcelos Mota (IagoMota) created T74763: Mantaflow: Animating smoke color affects existing smoke.
Mar 14 2020, 8:12 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T74762: Mantaflow: Non emmiting flow source affects simulation.
Mar 14 2020, 7:51 PM · Nodes & Physics, BF Blender

Feb 19 2020

Seth (VirtusH) awarded T73837: Mantaflow: Effect of forces increases over time. a Burninate token.
Feb 19 2020, 5:51 PM · Physics, Nodes & Physics, BF Blender

Feb 15 2020

Silas Opel (Schamph) awarded T73838: Mantaflow: Viewport shading of gas changes as "Initial Temperature" is modified. a Like token.
Feb 15 2020, 5:20 PM · Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T73838: Mantaflow: Viewport shading of gas changes as "Initial Temperature" is modified..
Feb 15 2020, 2:53 PM · Nodes & Physics, BF Blender
Silas Opel (Schamph) awarded T73837: Mantaflow: Effect of forces increases over time. a Like token.
Feb 15 2020, 2:47 PM · Physics, Nodes & Physics, BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T73837: Mantaflow: Effect of forces increases over time..
Feb 15 2020, 2:36 PM · Physics, Nodes & Physics, BF Blender

Feb 7 2019

Iago Diogo Vasconcelos Mota (IagoMota) added a comment to T61289: Emitting particles from instances not working properly..

My apologies. I forgot to include the fact that "unborn" and "Dead" need to be disabled in the Particle Instance modifier. I have tested this with the newest version of 2.79 and it seems to be working just as fine as the previous versions. In the recent builds of 2.8, however, it doesn't work properly.

Feb 7 2019, 7:25 PM · BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) updated the task description for T61289: Emitting particles from instances not working properly..
Feb 7 2019, 7:22 PM · BF Blender
Iago Diogo Vasconcelos Mota (IagoMota) created T61289: Emitting particles from instances not working properly..
Feb 7 2019, 5:53 PM · BF Blender

Jan 6 2019

Iago Diogo Vasconcelos Mota (IagoMota) created T60237: "Smoke Adaptive Domain" functioning improperly.
Jan 6 2019, 5:39 PM · Physics, BF Blender