GL_INVALID_OPERATION Error and Issues with Fragment Shader Outputs

[k_ishida7VYVN]

Hello everyone!

I am currently developing a custom extension for the Autodesk Viewer, and I'm encountering a problem when trying to change the color of specific parts of the model.

When attempting to change fragment colors using THREE.MeshPhongMaterial in my custom extension, The object identification is fine, but an error occurs in the material representation and the object becomes transparent, resulting in the following error in the browser console:

GL_INVALID_OPERATION: Active draw buffers with missing fragment shader outputs.

I would appreciate any advice on what this error means and the steps I can take to resolve it.

Thank you in advance for your help.😊

[jeremy_tammik]

Sorry, wrong place. Please note that this discussion forum is dedicated to programming Revit using the Revit API.

All APS-related questions should be addressed through the dedicated APS help channels:

• https://aps.autodesk.com/get-help

I hope this clarifies. Thank you for your cooperation and understanding.

Best regards,

Jeremy

[k_ishida7VYVN]

Thank you, Jeremy, for pointing me in the right direction.

I apologize for any confusion caused by posting in the wrong forum. I will redirect my inquiry to the appropriate APS help channels.

Best regards,