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Gottfried Hofmann (gottfried)
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User Since
Dec 26 2010, 3:06 PM (508 w, 1 d)

Recent Activity

May 22 2020

Gottfried Hofmann (gottfried) awarded D7767: VSE: Add Extract operator a Like token.
May 22 2020, 7:31 PM · VFX & Video, Video Sequencer

Mar 29 2020

Gottfried Hofmann (gottfried) added a comment to T71391: Line artifacts in Mantaflow smoke sim when using "Noise".

I think I have an example file here that has the same issue but in an extreme form, hope it helps with hunting down the bug.

Mar 29 2020, 1:58 PM · Nodes & Physics, BF Blender

Mar 20 2020

Gottfried Hofmann (gottfried) added a comment to T74192: Mantaflow 'Dissolve' broken for Flame smoke.

I'd say the reason it takes longer to dissolve smoke from a "Smoke Only" emitter is that it produces a lot more density, i.e. their density values are a lot higher. The "Fire Only" emitter might just produce densities that are too small.

Setting the "Flame Smoke" to a higher value should at least give more smoke that results from fire/fuel. Note that one can enter a higher value "manually" (max value is 8.0 right now).

For the "Slow" option, why is it not helpful? The idea is that the smoke dissolves in a 1/x fashion (fast at first, then slower).

Mar 20 2020, 9:11 AM · Nodes & Physics, BF Blender

Mar 16 2020

Gottfried Hofmann (gottfried) added a comment to T74062: Mantaflow Gas domain: 'use adaptive time steps' doesn't seem to adapt..

I can confirm the original issue in blender-2.83-f06a6e92bc5e-linux64.

Mar 16 2020, 7:19 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) assigned T74062: Mantaflow Gas domain: 'use adaptive time steps' doesn't seem to adapt. to Sebastián Barschkis (sebbas).
Mar 16 2020, 7:16 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) added a comment to T74559: Adaptive Domain creates lines in smoke.

@Gottfried Hofmann (gottfried) did you discuss it with Sebastian already?

Mar 16 2020, 5:12 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) assigned T66791: Smoke Shadow glitches in Cycles (workaround only with Fluid "Empty Space" option) to Sebastián Barschkis (sebbas).
Mar 16 2020, 4:27 PM · Render & Cycles, BF Blender
Gottfried Hofmann (gottfried) updated subscribers of T66791: Smoke Shadow glitches in Cycles (workaround only with Fluid "Empty Space" option).

I can confirm that increasing the transparent bounces fixes the glitches and that the OPs first problem was indeed Z-fighting.
The empty space feature might be something that needs to be exposed on the Mantaflow side? Assigned to @Sebastián Barschkis (sebbas) for now.

Mar 16 2020, 4:27 PM · Render & Cycles, BF Blender
Gottfried Hofmann (gottfried) assigned T74559: Adaptive Domain creates lines in smoke to Sebastián Barschkis (sebbas).
Mar 16 2020, 4:16 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) added a comment to T74559: Adaptive Domain creates lines in smoke.

I can confirm as well - the results are completely different with and without adaptive domain even though they should be identical.

Mar 16 2020, 4:16 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) assigned T69870: Adaptive Domain causing 'twitches' in gas position when noise applied to Sebastián Barschkis (sebbas).
Mar 16 2020, 4:04 PM · Physics, BF Blender
Gottfried Hofmann (gottfried) added a comment to T74192: Mantaflow 'Dissolve' broken for Flame smoke.

Confirmed. There is absolutely no smoke when turning on "Dissolve". But it returns when enabling "Slow".

Mar 16 2020, 4:01 PM · Nodes & Physics, BF Blender
Gottfried Hofmann (gottfried) changed the status of T74192: Mantaflow 'Dissolve' broken for Flame smoke from Needs Triage to Confirmed.
Mar 16 2020, 3:59 PM · Nodes & Physics, BF Blender

Jan 19 2020

Gottfried Hofmann (gottfried) added a comment to T72949: [Mantaflow] initial velocity ignored in the emission object.

Can you post a file showing to us how you did it? I've tried what you said but isn't working for me

Jan 19 2020, 7:48 PM · Nodes & Physics, Physics, BF Blender
Gottfried Hofmann (gottfried) added a comment to T72949: [Mantaflow] initial velocity ignored in the emission object.

I can confirm that a surface thickness of >0.0 circumvents the bug.

Jan 19 2020, 5:41 PM · Nodes & Physics, Physics, BF Blender

Dec 31 2019

Gottfried Hofmann (gottfried) awarded T72516: Mantaflow initial Velocity broken in Fluids a Burninate token.
Dec 31 2019, 1:40 PM · Physics, BF Blender
Gottfried Hofmann (gottfried) added a comment to T72516: Mantaflow initial Velocity broken in Fluids.

I can confirm in 2019-12-27 the initial velocity is ignored for liquids at the moment

Dec 31 2019, 1:40 PM · Physics, BF Blender

Nov 26 2019

Gottfried Hofmann (gottfried) awarded T68915: Light linking a Love token.
Nov 26 2019, 4:43 PM · Render & Cycles, Cycles, BF Blender

Nov 21 2019

Robert Guetzkow (rjg) awarded T71320: Mantaflow: Domain becomes cube for F12 render, fluid shows up in preview render a Like token.
Nov 21 2019, 4:41 PM · BF Blender

Nov 15 2019

Luc Revardel (lrevardel) awarded T71320: Mantaflow: Domain becomes cube for F12 render, fluid shows up in preview render a Like token.
Nov 15 2019, 9:27 PM · BF Blender

Nov 14 2019

Andres Stephens (Draise) awarded D5356: Increase Eevee volume samples to allow rendering animations a Love token.
Nov 14 2019, 7:07 PM · User Interface, Eevee

Nov 4 2019

Gottfried Hofmann (gottfried) awarded D6177: Shading: Noise and Wave nodes. Uniform texture distortion instead of diagonal shift. a Like token.
Nov 4 2019, 11:01 AM · BF Blender (2.82), Render & Cycles, Nodes

Nov 3 2019

Gottfried Hofmann (gottfried) assigned T71320: Mantaflow: Domain becomes cube for F12 render, fluid shows up in preview render to Sebastián Barschkis (sebbas).
Nov 3 2019, 2:55 PM · BF Blender
Gottfried Hofmann (gottfried) created T71320: Mantaflow: Domain becomes cube for F12 render, fluid shows up in preview render.
Nov 3 2019, 2:55 PM · BF Blender

Oct 8 2019

Gottfried Hofmann (gottfried) created T70632: Clear parent and keep transformation broken when changing scale of parent in non-uniform manner before and after parenting..
Oct 8 2019, 11:29 AM · BF Blender

Sep 22 2019

Gottfried Hofmann (gottfried) added a comment to T59995: Mantaflow Review.

I found another issue - here the fluid is has an offset to both the inflow and the collision object. The domain has been changed in edit mode:

Sep 22 2019, 10:26 AM · Tracker Curfew, BF Blender (2.82), Physics

Sep 11 2019

Gottfried Hofmann (gottfried) added a comment to T59995: Mantaflow Review.

What influence does the parameter for Real World Size have? I have created a demo file with a 10cm domain and a simple drop and the result looks like a huge splash (file is attached):

Sep 11 2019, 11:22 AM · Tracker Curfew, BF Blender (2.82), Physics

Sep 10 2019

Gottfried Hofmann (gottfried) awarded T59995: Mantaflow Review a Burninate token.
Sep 10 2019, 10:10 AM · Tracker Curfew, BF Blender (2.82), Physics

Sep 9 2019

Gottfried Hofmann (gottfried) added a comment to T59995: Mantaflow Review.

Thanks to adaptive domain this is now feature complete compared to the old system, yay! Thank you for the hard work over all those years.

Sep 9 2019, 10:24 AM · Tracker Curfew, BF Blender (2.82), Physics

Aug 20 2019

Gottfried Hofmann (gottfried) added a reviewer for D5534: Make Edge Rail and Boundary available in Active Tool and Workspace Settings for the Inset tool: William Reynish (billreynish).
Aug 20 2019, 11:15 AM
Gottfried Hofmann (gottfried) created D5534: Make Edge Rail and Boundary available in Active Tool and Workspace Settings for the Inset tool.
Aug 20 2019, 11:09 AM

Jul 31 2019

noki paike (amonpaike) awarded D5356: Increase Eevee volume samples to allow rendering animations a Love token.
Jul 31 2019, 10:23 AM · User Interface, Eevee

Jul 30 2019

Thomas Murphy (tmurphy) awarded D5356: Increase Eevee volume samples to allow rendering animations a Love token.
Jul 30 2019, 4:28 PM · User Interface, Eevee

Jul 28 2019

Marco (nacioss) awarded D5356: Increase Eevee volume samples to allow rendering animations a Like token.
Jul 28 2019, 3:15 PM · User Interface, Eevee
Fin O'Riordan (fin.eskimo) awarded D5356: Increase Eevee volume samples to allow rendering animations a Love token.
Jul 28 2019, 12:22 PM · User Interface, Eevee
Gottfried Hofmann (gottfried) added projects to D5356: Increase Eevee volume samples to allow rendering animations: Eevee, User Interface.
Jul 28 2019, 10:46 AM · User Interface, Eevee
Gottfried Hofmann (gottfried) created D5356: Increase Eevee volume samples to allow rendering animations.
Jul 28 2019, 10:45 AM · User Interface, Eevee

Jul 9 2019

Gottfried Hofmann (gottfried) awarded rB3f208ed92747: Raise particle count limit for 2.8 release a Like token.
Jul 9 2019, 6:10 PM
Duarte Farrajota Ramos (duarteframos) awarded D5120: Raise particle count limit for 2.8 release a Like token.
Jul 9 2019, 4:20 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

Remove hard limit and comments on that, increase soft limit.

Jul 9 2019, 4:00 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

Remove both the hard limit and the comments on said limit.

Jul 9 2019, 3:57 PM · Physics
Gottfried Hofmann (gottfried) added a comment to D5120: Raise particle count limit for 2.8 release.

But i am not sure what is this exactly about:

/* Hard limit is 16M to avoid reaching the object limit in Blender. */

@Brecht Van Lommel (brecht), unless i'm missing something, we can totally remove hard limit here.

Jul 9 2019, 3:37 PM · Physics

Jul 1 2019

Gottfried Hofmann (gottfried) added a comment to D2613: Cycles: Implement persistent storage for all scene data.

What is the status of this patch? It seems super useful for the visualization folk...

Jul 1 2019, 11:04 AM

Jun 28 2019

Gottfried Hofmann (gottfried) awarded rBc9238e638fd5: Cycles: add back control to render first N bounces with path termination a Love token.
Jun 28 2019, 6:07 PM

Jun 22 2019

Gottfried Hofmann (gottfried) created D5120: Raise particle count limit for 2.8 release.
Jun 22 2019, 9:42 AM · Physics

May 8 2019

Gottfried Hofmann (gottfried) awarded D4786: Proportional Editing Vertex Gradient a Like token.
May 8 2019, 8:26 AM · Modeling

Apr 18 2019

Gottfried Hofmann (gottfried) awarded rB5cfeba72f117: Python API: allow passing integer to some BGL functions instead of bgl.Buffer a Love token.
Apr 18 2019, 3:34 PM
Gottfried Hofmann (gottfried) archived P450 BGL address argument..
Apr 18 2019, 3:33 PM
Gottfried Hofmann (gottfried) added a comment to P450 BGL address argument..

This is no longer needed thanks to https://developer.blender.org/rB5cfeba72f117b7dc6d6eba22e3f203fc3f574429

Apr 18 2019, 3:33 PM
Gottfried Hofmann (gottfried) added a comment to D2404: Fix: get bgl methods working with buffer objects.
Apr 18 2019, 3:31 PM · Game Engine

Apr 17 2019

Gottfried Hofmann (gottfried) added a comment to D2404: Fix: get bgl methods working with buffer objects.

It seems like the issue this patch is addressing has been fixed in master, partially due to
https://developer.blender.org/rB85915ae1aad761fc79eccf005e68a2334ad6b81c

Apr 17 2019, 10:25 AM · Game Engine

Apr 16 2019

Gottfried Hofmann (gottfried) awarded rB85915ae1aad7: Python API: allow passing None to some BGL functions instead of bgl.Buffer a Party Time token.
Apr 16 2019, 5:38 PM

Mar 30 2019

Gottfried Hofmann (gottfried) updated subscribers of D2404: Fix: get bgl methods working with buffer objects.

@Porteries Tristan (panzergame) I tried your version with 2.8 but it does not work :(

Mar 30 2019, 8:22 PM · Game Engine

Feb 20 2019

Gottfried Hofmann (gottfried) added a comment to T59126: Segmentation fault when running gpu.types.GPUOffScreen.draw_view3d using a context override.

@Gottfried Hofmann (gottfried) Is this still an issue for you?

Feb 20 2019, 9:05 AM · BF Blender

Dec 10 2018

Gottfried Hofmann (gottfried) assigned T59126: Segmentation fault when running gpu.types.GPUOffScreen.draw_view3d using a context override to Jacques Lucke (JacquesLucke).
Dec 10 2018, 4:47 PM · BF Blender
Gottfried Hofmann (gottfried) updated the task description for T59126: Segmentation fault when running gpu.types.GPUOffScreen.draw_view3d using a context override.
Dec 10 2018, 4:46 PM · BF Blender
Gottfried Hofmann (gottfried) created T59126: Segmentation fault when running gpu.types.GPUOffScreen.draw_view3d using a context override.
Dec 10 2018, 4:46 PM · BF Blender

Sep 24 2018

Gottfried Hofmann (gottfried) awarded rB9682e43bf9e0: BGL: Wrap glBlitFramebuffer a Like token.
Sep 24 2018, 7:28 PM

May 24 2018

Gottfried Hofmann (gottfried) added a comment to D1543: Cycles: Add Support for IES files as textures for light strength.

Oh, and regarding false-color display etc.: Just go to the color management options and set the view to False Color.

May 24 2018, 8:56 AM

Apr 11 2018

Gottfried Hofmann (gottfried) changed the status of T54567: Blender freezes when using OSL noise template from Unknown Status to Resolved.
Apr 11 2018, 1:20 PM · BF Blender
Gottfried Hofmann (gottfried) added a comment to T54567: Blender freezes when using OSL noise template.

Oh, it works fine in 2.79b - this can be closed :)

Apr 11 2018, 1:20 PM · BF Blender
Gottfried Hofmann (gottfried) created T54567: Blender freezes when using OSL noise template.
Apr 11 2018, 10:27 AM · BF Blender

Mar 8 2018

Gottfried Hofmann (gottfried) created T54269: EXRs produced by latest master non-readable in most editors.
Mar 8 2018, 10:02 AM · Images & Movies, BF Blender

Mar 7 2018

Gottfried Hofmann (gottfried) awarded D3038: Cycles volume : fast empty space optimization by generating a tight mesh around the volume. a Love token.
Mar 7 2018, 11:16 AM
Gottfried Hofmann (gottfried) added a comment to D1897: Fix T48044: Smoke rendered color differs from color in viewport.

Since 2.8 is on it's way how about committing this to the 2.8 branch? I would be very pleased to have smoke colors provided linear in Cycles.

Mar 7 2018, 11:07 AM

Feb 18 2018

Gottfried Hofmann (gottfried) added a comment to D3033: Cycles: add Principled Volume shader..
  • Density and reference distance (1/density) are two ways to specify the same thing. For the principled volume shader I prefer density, since this naturally corresponds to the density field that you get from volume data. Density is also better to texture, as reference distance values go to zero the density goes to infinity which is not usually what you want. I think reference distance would be something to consider when we add absorption to the glass or principled BSDF. Its advantage is that you can specify a distance which may be more intuitive than a density, but it's less meaningful when multiplied with a volume density grid.
Feb 18 2018, 12:05 AM

Feb 17 2018

Gottfried Hofmann (gottfried) added a comment to D3033: Cycles: add Principled Volume shader..

Well, my point was that it might be cool having visible control colors. Setting 'density' or 'reference distance' (its reciprocal) is kind-of a "necessary evil" to pinpoint the transmission color to a fixed frame of reference.

Feb 17 2018, 4:27 PM
Gottfried Hofmann (gottfried) added a comment to D3033: Cycles: add Principled Volume shader..

I'm not entirely happy with it yet, but it's closer.

I've been having this discussion about controlling absorption / scattering coefficients with WYSIWYG colors just a few days ago.

Feb 17 2018, 4:01 PM

Feb 1 2018

Gottfried Hofmann (gottfried) added a comment to D3033: Cycles: add Principled Volume shader..

While I appreciate that this node will load grids automatically I would also like to have a seperate node to load density grids because the current way of using the attribute input is kinda sub-par. Usually I end up doing further operations on the density before feeding it into the volume nodes.
Btw: There are many types of grids to support, for example image sequences/slices like the ones you get from CT or MRT scans. Loading those is possible in Blender internal and it is really useful.

Feb 1 2018, 12:40 PM

May 28 2017

Gottfried Hofmann (gottfried) created D2692: Import PLYs with non-standard format string.
May 28 2017, 4:05 PM

May 18 2017

Gottfried Hofmann (gottfried) created T51553: Cycles: Volume Emission turns black when strength is 0 or color is black.
May 18 2017, 10:10 PM · BF Blender

Feb 2 2017

Gottfried Hofmann (gottfried) added a comment to T49931: VAT validation fails for companies based outside of current country.

Sure, might take a while, though :)

Feb 2 2017, 3:43 PM · Infrastructure: Blender Store

Jan 2 2017

Gottfried Hofmann (gottfried) added a comment to D2424: Add font selection to VSE text strips.

One small request: Can you use the Blender font loading infrastructure like in the font object (see attached image)?

Jan 2 2017, 10:40 AM · Video Sequencer

Dec 20 2016

Gottfried Hofmann (gottfried) added a comment to D1897: Fix T48044: Smoke rendered color differs from color in viewport.

Any updates on this? I could not test the patch as I have yet to find a way to build Blender with Cycles :(

Dec 20 2016, 8:31 PM

Dec 9 2016

Gottfried Hofmann (gottfried) created T50209: Is glossy ray broken in light path node.
Dec 9 2016, 1:23 PM · BF Blender

Sep 12 2016

Gottfried Hofmann (gottfried) added a comment to D1985: Light Linking.

Light linking is essential for product visualization. We often get requests for lighting that would be impossible in a studio but possible in CG (if there was light linking). Right now we can hack it somewhat by using diffuse shaders and glossy shaders with 100% roughness and making a distinction via the light path node, but there are too many situations where this approach does not help.

Sep 12 2016, 1:16 PM · Cycles
Gottfried Hofmann (gottfried) awarded D1985: Light Linking a Mountain of Wealth token.
Sep 12 2016, 1:08 PM · Cycles

Sep 5 2016

Gottfried Hofmann (gottfried) retitled D2198: Network renderer: simple fix for T43966 - In large projects the default set socket.timeout is to low from to Network renderer: simple fix for T43966 - In large projects the default set socket.timeout is to low.
Sep 5 2016, 4:48 PM
Gottfried Hofmann (gottfried) updated D2196: Netrender: Fix for T46042 - Slave continues to render frames after cancellation by job manager.
Sep 5 2016, 1:04 PM
Gottfried Hofmann (gottfried) retitled D2196: Netrender: Fix for T46042 - Slave continues to render frames after cancellation by job manager from to Netrender: Fix for T46042 - Slave continues to render frames after cancellation by job manager.
Sep 5 2016, 12:20 PM

Aug 26 2016

Gottfried Hofmann (gottfried) added a comment to T49163: Animated object visibilty 1 frame off when turning on motion blur.

I see the problem. But in case of normal objects this behaviour introduces a lot of new problems.

Aug 26 2016, 11:37 AM · BF Blender: Regressions, Cycles, BF Blender

Aug 25 2016

Gottfried Hofmann (gottfried) created T49163: Animated object visibilty 1 frame off when turning on motion blur.
Aug 25 2016, 4:10 PM · BF Blender: Regressions, Cycles, BF Blender

Jun 21 2016

Gottfried Hofmann (gottfried) created T48698: Rays from SSS act as diffuse for normal objects but have an undefined type for lamp objects.
Jun 21 2016, 12:34 PM · Cycles, BF Blender

May 10 2016

Gottfried Hofmann (gottfried) added a comment to T41748: Remove-Doubles (modifier).

When modeling with the screw modifier, a remove doubles modifier would be awesome as well! I have been longing for this for a long time now.

May 10 2016, 3:38 PM · Modeling, BF Blender

Apr 12 2016

Gottfried Hofmann (gottfried) added a comment to T45093: Cycles: NVidia GTX 980 Ti rendering at 1/3rd speed of NVidia GTX 980 the same machine?.

One thing: Bad performance happens in Windows 7 as well when driver version is 359.06 or 364.51. Only 361.91 seems to work fine on Windows 7. Seems like the Problem is with nVidia?

Apr 12 2016, 9:32 PM · BF Blender

Apr 8 2016

Gottfried Hofmann (gottfried) created T48088: Reproducible crash: Edges + Array Mod + Hair Particles.
Apr 8 2016, 11:34 AM · BF Blender

Apr 4 2016

Gottfried Hofmann (gottfried) created T48044: Smoke Colour from flow source in Cycles differs from colour set and viewport colour..
Apr 4 2016, 9:43 AM · Cycles, Rendering, BF Blender

Mar 9 2016

Gottfried Hofmann (gottfried) added a reviewer for D1838: Activate the bevel factor section when extrude > 0: Campbell Barton (campbellbarton).
Mar 9 2016, 7:17 AM

Mar 8 2016

Gottfried Hofmann (gottfried) created T47725: Kerning table not read from TTF font.
Mar 8 2016, 4:26 PM · BF Blender
Gottfried Hofmann (gottfried) added a comment to D1733: Smoke/volume visualization settings.

I did not find time yet to apply the patch myself - in what way does the patch interfere with fire rendering?

Mar 8 2016, 4:22 PM

Feb 23 2016

Gottfried Hofmann (gottfried) created T47539: Plane track ignores absolute scaling of image.
Feb 23 2016, 7:52 AM · BF Blender

Feb 22 2016

Gottfried Hofmann (gottfried) retitled D1818: Remove check for Win2k from Netrender from to Remove check for Win2k from Netrender.
Feb 22 2016, 12:31 PM · Add-ons (Community)

Feb 16 2016

Gottfried Hofmann (gottfried) added a reviewer for D1807: Fix for T45097: "Reset error frames" not working in Netrender: Bastien Montagne (mont29).
Feb 16 2016, 8:13 PM
Gottfried Hofmann (gottfried) retitled D1807: Fix for T45097: "Reset error frames" not working in Netrender from to Fix for T45097: "Reset error frames" not working in Netrender.
Feb 16 2016, 8:12 PM

Oct 7 2015

Gottfried Hofmann (gottfried) added a comment to T46405: Point density textures. When using vertices as source, the viewport preview render does not update when adding a modifier or changing modifier settings..

here is the file.

Oct 7 2015, 11:27 AM · Cycles, BF Blender
Gottfried Hofmann (gottfried) created T46405: Point density textures. When using vertices as source, the viewport preview render does not update when adding a modifier or changing modifier settings..
Oct 7 2015, 11:25 AM · Cycles, BF Blender
Gottfried Hofmann (gottfried) added a comment to T46301: Cycles Point Density Texture object space wrong mapping for scale.

The issue indeed got fixed by rB4c09f47

Oct 7 2015, 11:17 AM · BF Blender

Oct 3 2015

Gottfried Hofmann (gottfried) added a comment to T46358: Cycles point density interpolation failing.

I can confirm this even with 9ad829d

Oct 3 2015, 4:59 PM · BF Blender

Sep 28 2015

Gottfried Hofmann (gottfried) added a comment to T46301: Cycles Point Density Texture object space wrong mapping for scale.

Sorry for that, try the above one.

Sep 28 2015, 2:17 PM · BF Blender
Gottfried Hofmann (gottfried) created T46301: Cycles Point Density Texture object space wrong mapping for scale.
Sep 28 2015, 11:04 AM · BF Blender