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powroupi / blender_mmd_tools

mmd_tools is a blender addon for importing Models and Motions of MikuMikuDance.
GNU General Public License v3.0
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Model Appears Black in Material Preview Mode #353

Closed crazy4anime09 closed 3 years ago

crazy4anime09 commented 3 years ago

In Blender 2.93 some models appear all black or only parts of them appear black in material preview mode, but when I go to render preview mode the materials show up normal. It did not do this in Blender 2.92. Do you know why it is doing this or how to fix it? I am using the most recent version of the mmd tools addon.

MMD Model Shows Up Black MMD Model Shows up Normal In Render

powroupi commented 3 years ago

I don't have this issue on my system, so I'm afraid I can't solve this issue. :cry:

I think it might be an issue of your system or your Blender settings. You might try [File]->[Defaults]->[Load Factory Settings] to see if the issue still happens. If it still happens, then it could be the issue of your system because it seems that Material Preview Mode uses EEVEE render engine, it might happens if your graphic card can't handle it. (not sure :worried: )

crazy4anime09 commented 3 years ago

I tried loading the factory settings, but the issue still happens. You're probably right that it's an issue with my system because my computer is 8 years old, and when I install new versions of Blender I get a message that says limited support. I guess if I want to be able to use newer versions of Blender in the future I'll have to get a new computer lol.

I tried looking around in Blender to see if I could figure out how to fix it and I did discover a weird fix for it. If I click on a material and go to the shader editor and go to the MMDShaderDev node if I choose any number for the Reflect option the material shows up in material preview mode normally again. The Reflect option is set to 0 for almost all materials normally and in Blender 2.92 it is set to 0 for the materials too. I'm not sure what the Reflect option is used for, but if I want to use MMD models in Blender 2.93 and the materials show up black I'll just have to go to the shader editor to fix them each time. I'll probably stick to using Blender 2.92 for now ^_^

nagadomi commented 3 years ago

This may be related to the following issues. T88754 Intel HD graphics: Changing Roughness Value to 0 causes mesh to be black mmd_tools changes Material > Viewport Display > Roughness to match the MMD material settings(Reflect). The issue may occur when Roughness is not 1.

powroupi commented 3 years ago

@crazy4anime09, basically assigning 0 to Reflect of mmd shader is invalid, I've added a fix for this issue. You might update your mmd_tools and try again. You can close this issue If the issue is not happened again. Thank you. :smile:

crazy4anime09 commented 3 years ago

It worked! Thank you so much! I will close this issue now. Thank you so much again! ^_^