Dynamic Paint not working #67766

New Issue

Dimitri Bastos · 2019-07-26T21:38:31+02:00

Dimitri Bastos commented

2019-07-26 21:38:31 +02:00

System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.39

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-24 14:22, hash: 507ffee6e1
Worked: Only on 2.79, as far as I know.

Short description of error
Half of the functions of Dynamic Paint aren't working. DP works with Brushes and Canvas, but only two types of canvas are working: Waves and Displacement. Paint and Weight don't work.

Exact steps for others to reproduce the error
Create a Grid, subdivide 2 or 3 times.
Create a Sphere.
Make the grid a Canvas dynamic paint object.
Make the Sphere a Brush dynamic paint object.
On paint and weight modes of the canvas object, nothing works.
On wave and displacement modes of the canvas, it works.

**System Information** Operating system: Windows-10-10.0.17763 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.39 **Blender Version** Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-24 14:22, hash: `507ffee6e1` Worked: Only on 2.79, as far as I know. **Short description of error** Half of the functions of Dynamic Paint aren't working. DP works with Brushes and Canvas, but only two types of canvas are working: Waves and Displacement. Paint and Weight don't work. **Exact steps for others to reproduce the error** Create a Grid, subdivide 2 or 3 times. Create a Sphere. Make the grid a Canvas dynamic paint object. Make the Sphere a Brush dynamic paint object. On paint and weight modes of the canvas object, nothing works. On wave and displacement modes of the canvas, it works.

Dimitri Bastos commented

2019-07-26 21:38:31 +02:00

Added subscriber: @DimitriBastos

dark999 commented

2019-07-26 21:44:49 +02:00

Added subscriber: @dark999

dark999 commented

2019-07-26 21:44:49 +02:00

You forgot to upload a simplest possible .blend file to reproduce this issue

Dimitri Bastos commented

2019-07-26 21:47:12 +02:00

This comment was removed by @DimitriBastos

*This comment was removed by @DimitriBastos*

Dimitri Bastos commented

2019-07-26 21:47:26 +02:00

In #67766#736546, @dark999 wrote:
You forgot to upload a simplest possible .blend file to reproduce this issue

Which isn't required, as I described the exact steps needed in order to reproduce the error. You can try yourself on your end.

> In #67766#736546, @dark999 wrote: > You forgot to upload a simplest possible .blend file to reproduce this issue Which isn't required, as I described the exact steps needed in order to reproduce the error. You can try yourself on your end.

Craig Dolphin commented

2019-07-26 23:12:29 +02:00

Added subscriber: @CraigD

Craig Dolphin commented

2019-07-26 23:12:29 +02:00

I'm not very familiar with dynamic paint but I am wondering if this has something to do with needing baking to get the output.

Although it's not required, it helps the developers triage the issue much quicker if you provide them with the basic file to work with.

Here's a file I made based on the instructions given. In this file are four grid canvases: one for each canvas type.

The paint, displace, and waves mode all seem to be working from what I can tell. I've set the material for the paint canvas to show the vertex color map being produced as the animation plays. This needs to be viewed in Lookdev or Render to see. However, if you're in vertex paint mode with the output color map selected, you can't visualize the results. I don't know if this is expected behavior or not.

I tried to do the same with the material for the weight canvas: convert the vertex group into a color using the attribute node. But this doesn't show anything happening. And viewing the object in weight paint mode with that vertex group selected doesn't show anything happening either.

In any case, I hope the file will help the developers.
test_dynamic_paint.blend

I'm not very familiar with dynamic paint but I am wondering if this has something to do with needing baking to get the output. Although it's not required, it helps the developers triage the issue much quicker if you provide them with the basic file to work with. Here's a file I made based on the instructions given. In this file are four grid canvases: one for each canvas type. The paint, displace, and waves mode all seem to be working from what I can tell. I've set the material for the paint canvas to show the vertex color map being produced as the animation plays. This needs to be viewed in Lookdev or Render to see. However, if you're in vertex paint mode with the output color map selected, you can't visualize the results. I don't know if this is expected behavior or not. I tried to do the same with the material for the weight canvas: convert the vertex group into a color using the attribute node. But this doesn't show anything happening. And viewing the object in weight paint mode with that vertex group selected doesn't show anything happening either. In any case, I hope the file will help the developers. [test_dynamic_paint.blend](https://archive.blender.org/developer/F7630333/test_dynamic_paint.blend)

Stephen Swaney commented

2019-07-26 23:32:54 +02:00

Added subscriber: @StephenSwaney

Stephen Swaney commented

2019-07-26 23:32:54 +02:00

Which isn't required, as I described the exact steps needed in order to reproduce the error. You can try yourself on your end.

It may not be strictly required, but speaking from experience, it makes problem-solving easier. It lets us see all your settings which is important for something complicated like Dynamic Paint.

Another way to look at this is that you are asking people to invest their time to help solve your problem. Making it easier for them is always a good idea.

Got a .blend for us?

> Which isn't required, as I described the exact steps needed in order to reproduce the error. You can try yourself on your end. It may not be strictly required, but speaking from experience, it makes problem-solving easier. It lets us see *all* your settings which is important for something complicated like Dynamic Paint. Another way to look at this is that you are asking people to invest their time to help solve your problem. Making it easier for them is always a good idea. Got a .blend for us?

Dimitri Bastos commented

2019-07-27 00:25:36 +02:00

Ok, you're right. But I didn't think it was exactly needed because there is really nothing more that what I described. No additional settings, just the steps as I pointed. I really think that manually reproduce the steps would be more helpful in this case because the issue is just the most basic Dynamic Paint setup possible. My bad for overthinking the bug report.

I thank @CraigD for already providing the file. Next time I will try to be more helpful.

Sorry for any inconvenience.

Ok, you're right. But I didn't think it was exactly needed because there is really nothing more that what I described. No additional settings, just the steps as I pointed. I really think that manually reproduce the steps would be more helpful in this case because the issue is just the most basic Dynamic Paint setup possible. My bad for overthinking the bug report. I thank @CraigD for already providing the file. Next time I will try to be more helpful. Sorry for any inconvenience.

YAFU commented

2019-07-27 01:43:07 +02:00

Added subscriber: @YAFU

YAFU commented

2019-07-27 01:43:07 +02:00

Tested and everyone is working correctly here.

Note that in 2.8 it is not yet possible to see the result in Solid mode, as in 2.79. You must correctly configure Vertex Colors or Vertex Groups on Canvas > Output, and then make use of it.
And please, always provide a .blend file where you can reproduce the problem, regardless of whether it is very basic or simple.

Tested and everyone is working correctly here. Note that in 2.8 it is not yet possible to see the result in Solid mode, as in 2.79. You must correctly configure Vertex Colors or Vertex Groups on Canvas > Output, and then make use of it. And please, always provide a .blend file where you can reproduce the problem, regardless of whether it is very basic or simple.

Stephen Swaney commented

2019-07-27 22:06:46 +02:00

In #67766#736647, @DimitriBastos wrote:
Sorry for any inconvenience.

No problem! Just trying to explain the reason for something that probably seems arbitrary and fussy.

Thanks for taking the time to do a bug report.

> In #67766#736647, @DimitriBastos wrote: > Sorry for any inconvenience. No problem! Just trying to explain the reason for something that probably seems arbitrary and fussy. Thanks for taking the time to do a bug report.

Dimitri Bastos commented

2019-07-29 14:32:09 +02:00

So, I followed the instruction that @YAFU has posted, and it worked. However, still can't find a way of seeing the Vertex Weight painting in the viewport. I can see the results when, for instance, it is applyed on a modifier, but not the painting itself.
{F7635511}Can someone check a workflow or is it a bug?

So, I followed the instruction that @YAFU has posted, and it worked. However, still can't find a way of seeing the Vertex Weight painting in the viewport. I can see the results when, for instance, it is applyed on a modifier, but not the painting itself. {[F7635511](https://archive.blender.org/developer/F7635511/DP_no_visual_weight.blend)}Can someone check a workflow or is it a bug?

Dimitri Bastos commented

2019-07-29 14:33:14 +02:00

In #67766#737224, @StephenSwaney wrote:

In #67766#736647, @DimitriBastos wrote:
Sorry for any inconvenience.

No problem! Just trying to explain the reason for something that probably seems arbitrary and fussy.

Thanks for taking the time to do a bug report.

I'm glad to help! :)

> In #67766#737224, @StephenSwaney wrote: >> In #67766#736647, @DimitriBastos wrote: >> Sorry for any inconvenience. > > No problem! Just trying to explain the reason for something that probably seems arbitrary and fussy. > > Thanks for taking the time to do a bug report. I'm glad to help! :)

YAFU commented

2019-07-29 14:46:58 +02:00

still can't find a way of seeing the Vertex Weight painting in the viewport

It is something to solve:
https://developer.blender.org/T67690

https://developer.blender.org/T56349#666916

https://developer.blender.org/T63819#665047

>> still can't find a way of seeing the Vertex Weight painting in the viewport It is something to solve: https://developer.blender.org/T67690 https://developer.blender.org/T56349#666916 https://developer.blender.org/T63819#665047

Sebastian Parborg commented

2019-08-01 17:57:32 +02:00

Added subscriber: @ZedDB

Sebastian Parborg commented

2019-08-01 17:57:32 +02:00

Changed status from 'Open' to: 'Archived'

Sebastian Parborg closed this issue

2019-08-01 17:57:32 +02:00

Sebastian Parborg self-assigned this 2019-08-01 17:57:32 +02:00

Sebastian Parborg commented

2019-08-01 17:57:32 +02:00

This is a known issue but we can't say when it will be fixed.

Philipp Oeser commented

2019-11-05 21:40:18 +01:00

Closed as duplicate of #67690

Philipp Oeser closed this issue

2019-11-05 21:40:18 +01:00

Vasyliev Oleksander commented

2020-04-18 20:22:38 +02:00

Added subscriber: @sasha-vasilev-2014

Vasyliev Oleksander commented

2020-04-18 20:22:38 +02:00

One video which solves everything

https://www.youtube.com/watch?v=m2qUmjwPMjo

One video which solves everything ``` https://www.youtube.com/watch?v=m2qUmjwPMjo ```

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Dynamic Paint not working #67766