EmissiveMap texture error when using the MMDAnimationHelper and MMDLoader (maybe is texture error

[Catcolia]

Describe the bug
Same question at #23190

But If I turn off the pointLight and only open the ambient light it can display the emissiveMap silghtly

I found some solutions ways like
https://zhuanlan.zhihu.com/p/350136476
and
https://blog.csdn.net/qq_34272760/article/details/120530944
Then I follow their ways found this

//try to type this in console to find that emissiveMap
test.mesh.material[9].uniforms.emissiveMap

Surprisingly found this

So I thought that might be the texture error when parse the PMX file
then I

test.mesh.material[9].uniforms.emissiveMap = test.mesh.material[9].uniforms.emissiveMap

nothing helped

To Reproduce

Steps to reproduce the behavior:

1. Go to download https://drive.google.com/drive/folders/1XkZkIqJa8zMwbunGL4XFAmNvDY_JZzcG?usp=sharing
2. Drag the package which named three.js-r139 into the folder MMDLoaderTest
3. Open VSCode and switch to test.html
4. Click right button select "Open with Live Server"
5. Drag canvas to back of the character to see the problem

Code

//use this function in console to play and pause the motion
PlayPause()

Expected behavior
I hope this can displayed rightly

Platform:

• Device: [Desktop]
• OS: [Windows11]
• Browser: [Chrome 99.0.4844.84]
• Three.js version: [r139]
• IDE: [VSCode]
• VSCodeExtension: [Live Server]

[Catcolia]

Sorry for the wrong writing
correct=>

test.mesh.material[9].uniforms.emissiveMap = test.mesh.material[9].uniforms.map

[Catcolia]

Use WebGL1Renderer or WebGLRenderer both nothing helped

[Mugen87]

I don't think #23190 (which was about morph targets) is related to your issue. #23190 is also fixed with the latest version of three.js.

[Catcolia]

I don't think #23190 (which was about morph targets) is related to your issue. #23190 is also fixed with the latest version of three.js.

But if you compare the error with #23190 you will found they are very similar.
I use the dev version before and found this error. When I change the newly version the error also appear.
Could you please try to reproduce my behavior again to see this error. Because I really try lots of times to fix this error like change the config of camera renderer scene, switch the mmd model. Nothing helped. Thanks a lot.

[Mugen87]

But if you compare the error with #23190 you will found they are very similar.

No sorry, I don't think so. Your issue looks unrelated to any kind of vertex displacement. TBH, I also don't understand the visual issue you have reported above. The screenshots look like the expected result of the model's toon shader.

It might be easier to understand your issue if you share two screenshots. One that shows the expected result and the other the actual one.

[Catcolia]

But if you compare the error with #23190 you will found they are very similar.

No sorry, I don't think so. Your issue looks unrelated to any kind of vertex displacement. TBH, I also don't understand the visual issue you have reported above. The screenshots look like the expected result of the model's toon shader.

It might be easier to understand your issue if you share two screenshots. One that shows the expected result and the other the actual one.

I mean when I load a pmx model. Add a light except ambient light to scene. The back of model where some area not illuminated by that light displayed a very black shadow. It showed like this.
The red mark is the position of a point light.
Look this model have very black shadow which is actual one.

What I expected result is let this model displayed like MikuMikuDance which don't have this black shadow when adding a light to the scene.

[Catcolia]

But if you compare the error with #23190 you will found they are very similar.

No sorry, I don't think so. Your issue looks unrelated to any kind of vertex displacement. TBH, I also don't understand the visual issue you have reported above. The screenshots look like the expected result of the model's toon shader.

It might be easier to understand your issue if you share two screenshots. One that shows the expected result and the other the actual one.

I tested some models found a few models when it Illuminated by light source except ambient light will appear the black shadow.
But these models display correctly in MikuMikuDance.
I also found some models don't have this issue when it Illuminated by light source except ambient light when using three.js.
What I mean except ambient light is that adding ambient light to scene don't display shadow at the model.
I am sorry for my poor English. 😥

[Mugen87]

Add a light except ambient light to scene. The back of model where some area not illuminated by that light displayed a very black shadow

It seems I have missed this detail in your original post.

What you describe is actually the expected result. To avoid black areas of your model, you should combine your directional, point or spot light with an ambient or hemisphere light like in the official MMD demo.

Can you please try the same lighting setup like in the official demo? Does it look better now?

I also found some models don't have this issue when it Illuminated by light source except ambient light when using three.js.

That is strange. The toon shader should produce the same result for all assets. Do you mind sharing one of these assets?

[Catcolia]

Add a light except ambient light to scene. The back of model where some area not illuminated by that light displayed a very black shadow

It seems I have missed this detail in your original post.

What you describe is actually the expected result. To avoid black areas of your model, you should combine your directional, point or spot light with an ambient or hemisphere light like in the official MMD demo.

Can you please try the same lighting setup like in the official demo? Does it look better now?

I also found some models don't have this issue when it Illuminated by light source except ambient light when using three.js.

That is strange. The toon shader should produce the same result for all assets. Do you mind sharing one of these assets?

Same issue.
So that's why I think it's the same issue at #23190
I also test it on Mac. Both test used vsc extension live server to be the web server.

I only changed this path.

Here is two model which have the black shadow[Issue one], which displayed correctly[displayed correctly]
https://drive.google.com/drive/folders/1sjNjAyeJcrc3Su8t1pgFghjvR_B5x_uA?usp=sharing

Here is my code with a issue model.
https://drive.google.com/drive/folders/1XkZkIqJa8zMwbunGL4XFAmNvDY_JZzcG?usp=sharing

Before this code, I tried every different light and add them into scene, nothing helped of black shadow.
To describe the issue more convenient, I only add a light in my code.

Sincere thanks for your help.

[Mugen87]

I can reproduce now the lighting issue with the first model. I hope @takahirox can help here since I'm not sure what's going wrong so far.

[Catcolia]

Thanks a lot.

[takahirox]

Let me check...

[takahirox]

@ChenZihan-sudo Do you mind if making and sharing an online demo like official MMD demo?