❀ DoN's Dynamic Mesh Effects ❀

[VSZ]

Just an update that using the plugin in VR environments works just fine.

Thank you, that looks really neat!

Which Don Material node is that using? Would be interesting to see a skeletal mesh usecase ("Don Mesh Paint UV1" node) as that's relatively more performance intensive (especially when decal textures are involved).

But anyway, thank you so much for getting back on this!

[cpenny20]

Does the cloth have a physics asset to go with it? The hitresult's location needs to roughly approximate the cloth's pixels for this to work. Obviously a primitive collision shape can never approximate the rich contortions of cloth, but you need some kind of collision to occur for the paint to be projected. Cloth support was recently added in 4.19 and should work as long as your cloth mesh has a collision body.

It is not a cloth asset, just a skeletal mesh. It's a pair of shorts in this case. I think trace responses to child components does not work in unreal yet, so as a workaround, i broke the hit result and re-made it but I forced the clothing component into hit result and it worked like a charm.

And to your latest question to the rennsix about using the plug in on skeletal meshes in vr, I tried it for the bullet holes. It looks great, but unfortunately the performance hit was too great. Every time it painted a bullet hole it would hitch the performance for a split second. It was very quick but for rapid fire it definitely makes it unplayable. If we could overcome that little performance hit, there are great things that can be done.

Also, with regards to a question I asked a while ago, I am still curious about something: I tried painting using a decal as my brush and it seems to work correctly most of the time, but the size changes sometimes. I tried it on several different skeletal meshes with clean, well proportioned UV maps, and it still would paint the decal at seemingly random sizes. Wonder if there's any way around this?

[rennsix]

Which Don Material node is that using?

Yes, it is the Don Mesh Paint UV1. Here is an image of the setup. Will be doing some 'chalk' work next month.

[FrostyElkArne]

We have hit a problem that we can't find any solution to. When we package a dedicated server the Materials no longer passes DoNs test for a valid material. Painting on the server only gives warnings about missing support for DoN. The packaging for dedicated server has stripped out all DoN functionality.

Running an editor-dedicated server works fine so this comes as a surprice now that we start packaging the game.

Is there a setting somewhere that we have missed?

[VSZ]

We have hit a problem that we can't find any solution to. When we package a dedicated server the Materials no longer passes DoNs test for a valid material. Painting on the server only gives warnings about missing support for DoN. The packaging for dedicated server has stripped out all DoN functionality.

Running an editor-dedicated server works fine so this comes as a surprice now that we start packaging the game.

Is there a setting somewhere that we have missed?

Hey, can you share the server logs with the warnings about missing support?

That will be helpful for deducing what is going on.

~

It is not a cloth asset, just a skeletal mesh. It's a pair of shorts in this case. I think trace responses to child components does not work in unreal yet, so as a workaround, i broke the hit result and re-made it but I forced the clothing component into hit result and it worked like a charm.

And to your latest question to the rennsix about using the plug in on skeletal meshes in vr, I tried it for the bullet holes. It looks great, but unfortunately the performance hit was too great. Every time it painted a bullet hole it would hitch the performance for a split second. It was very quick but for rapid fire it definitely makes it unplayable. If we could overcome that little performance hit, there are great things that can be done.

Also, with regards to a question I asked a while ago, I am still curious about something: I tried painting using a decal as my brush and it seems to work correctly most of the time, but the size changes sometimes. I tried it on several different skeletal meshes with clean, well proportioned UV maps, and it still would paint the decal at seemingly random sizes. Wonder if there's any way around this?

Glad to hear the skeletal mesh/cloth is working now!

VR performance - are you using decals? That's the most expensive flow. If you're not using decals, then lowering the values of DefaultPositionsTextureSizeX/SizeY in DonMeshPainterGlobalActor.h may help. For rapid-fire maybe you could throttle the impact holes so not every bullet is painted is every tick? Aggregating holes with some custom logic is also an option although that kind of stuff always needs a lot of tweaking to get visually acceptable results. Apart from those - if the pose of the skeletal mesh is known / mostly unvarying (eg: being struck by a bullet always puts the target into a particular animation pose) then it may be possible to cache that animation pose beforehand which would virtually eliminate any performance cost (this would be some custom coding as such a feature is not part of the plugin yet). Final option I can think of is to add support in the plugin for bone-space transformation based skeletal painting (which someone asked about earlier in this thread); less accurate but far more performant.

For the decal brush size - Do you have pics of the varying decal brush sizes and maybe the corresponding UV map?

~

Yes, it is the Don Mesh Paint UV1. Here is an image of the setup. Will be doing some 'chalk' work next month.

Thank you for sharing that! Can't wait for the chalk work

[FrostyElkArne]

I have activated your printouts to Log level and this is what I get on a cooked dedicated server:

[2018.08.11-13.13.09:372][837]LogDonMeshPainting: 
[Alert] Archer_MM2_Mat - Layer 0 missing
This material is not configured for painting on layer 0.
You need to add the correct Don paint layer material function inside your material

[2018.08.11-13.13.09:374][837]LogDonMeshPainting: 
[Alert] claymore_Mat - Layer 0 missing
This material is not configured for painting on layer 0.
You need to add the correct Don paint layer material function inside your material

[2018.08.11-13.13.09:504][845]LogDonMeshPainting: 
[Alert] DOC_Mat_M - Layer 0 missing
This material is not configured for painting on layer 0.
You need to add the correct Don paint layer material function inside your material

Just a sample, all materials gives this printout.

[VSZ]

I have activated your printouts to Log level and this is what I get on a cooked dedicated server:
Just a sample, all materials gives this printout.

If you are comfortable with modifying a bit of code, can you try the following:

1. Open DonMeshPainterComponent.cpp
2. Go to the function ResolvePaintLayer
3. Go the if condition that reads

if (layerNameByUvMethod.IsEqual(DonMeshPaint::DonPaintLayer_MeshGeneric))

4. Inside that if, replace the entire contents with the following:

 layerParameterName = FName("DonPaintLayer_MeshGeneric_UV1_0");
bRenderTargetParameterFound = true; // don't forget this line!

5. Recompile the code and try now.

This assumes that you are using the Don Mesh Paint UV1 node on Layer 0. If that is not the case, you should change the contents of the FName to match that.

Let me know if this works and we can investigate further accordingly.

[FrostyElkArne]

Deep in memory stomping right now but I will give it a try later on.

[Coverop]

Hey guys!
I have some questions regarding this addon


1) Is It possible to create a BP_projectile with multiple brush/decals ?
For example:slash decal , bullet decal , blood and many more....

2) Is It possible to control the opacity, size of the decal on the character once It's applied?
For example:regeneration , getting clean.

3) Do characters require to use Blueprint?

[bv01d]

How can I paint physic materials on a landscape using this plugin?

Can anybody help me with that?

[bv01d]

This is my material - http://prntscr.com/kveupc

I can paint landscape with blue or red color. It works fine, but collision works wrong if I repaint some areas.

For example - I painted some ared in red color and after that I repainted that area with blue color - http://prntscr.com/kvepgt

But collision still thinks that this is a red color.

Is it a bug or maybe something is wrng with my material?

[bv01d]

.

Is there ability to erase painted area on landscape?

[GreylockDev]

Hi,

Is anyone having luck getting this to work on 4.20.3? I just downloaded the plugin and paint is not working in my project, I also tried the sample project the creator made and it did not work either!

Thanks.

EDIT: Nevermind, it just appears that the landscape bounds are shared between projects, so the settings I had for my project invalidated the demo project.

[VSZ]

Hi,

Is anyone having luck getting this to work on 4.20.3? I just downloaded the plugin and paint is not working in my project, I also tried the sample project the creator made and it did not work either!

Thanks.

EDIT: Nevermind, it just appears that the landscape bounds are shared between projects, so the settings I had for my project invalidated the demo project.

Thanks for the update. Yes it is shared if you have the plugin installed at engine level (true for marketplace plugins by default).

You can simply copy the plugin directly into your project folder for maintaining unique bounds per project.

Hey guys!
I have some questions regarding this addon

1) Is It possible to create a BP_projectile with multiple brush/decals ?
For example:slash decal , bullet decal , blood and many more....

2) Is It possible to control the opacity, size of the decal on the character once It's applied?
For example:regeneration , getting clean.

3) Do characters require to use Blueprint?

Sorry for the late reply, been super busy with my game's biggest Steam update

1) Yes. complete flexibility is offered at the API level. You can extend it to create custom "paint projectiles" as per your needs

2) The eraser functionality allows you to remove painted areas and restoration of an entire actor/material (purge) is also supported. You can also simply choose to negate the mask's alpha channel in the material for cheap gradual transitions without touching the render target(s) again.

3) You can use any format you like - Blueprints or C++

~

Hope that helps

[Rita Shinenen]

Hi, I using this plug-in in UE4.18.
I have a problem when i paint to the mesh that rotated to some direction.
The projectioned decal has wrong scaling when mesh's rotation changed.
Can i fix this problem if i use plug-in of 4.20 with Latest UE?