Principled BSDF Shader node - Input number 16 does not exist #52418

New Issue

Dennis · 2017-08-16T17:23:12+02:00

Dennis commented

2017-08-16 17:23:12 +02:00

System Information
Windows 7, GPU
CPU = Intel i7
GPU = Nvidia GTX 10800

Blender Version
Broken: 2.79 Release Candidate
Date: 2017-08-01 17:31
Hash: 5e9132b

Short description of error
In the new "Principled BSDF Shader" node, Input #16 doesn't exist.
There are 19 inputs, and they should be numbered 0-to-18.
But they are numbered 0-to-19 because "16" is skipped over and is not used.
Using "16" in a Python script creates no link but also generates no error message.

Exact steps for others to reproduce the error

Start with a default project with the "Cube" object, and open a "node editing" window and a "Python console" window.

Enter these Python commands...

material_in_slot_0 = bpy.data.objects["Cube"].material_slots- [x].material
material_in_slot_0.use_nodes= True

MyShaderNode = material_in_slot_0.node_tree.nodes.new(type = "ShaderNodeBsdfPrincipled")
MyBaseColorNode = material_in_slot_0.node_tree.nodes.new(type = "ShaderNodeTexImage")

material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs- [x]) #Base color
material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[1])
material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[2])

...etc...

material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[15]) #Transmission - correct

material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[16]) #<<< Nothing happens <<< THIS IS THE BUG

material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[17]) #Normal - but if you count, it should be 16
material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[18])
material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[19]) # Tangent - but if you count, "19" should not exist, but it works

material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[20]) #Gives an error, as it should - but "19" should also give an error

Closing comments
This is my first-ever entry here. I hope I did okay.

**System Information** Windows 7, GPU CPU = Intel i7 GPU = Nvidia GTX 10800 **Blender Version** Broken: 2.79 Release Candidate Date: 2017-08-01 17:31 Hash: 5e9132b **Short description of error** In the new "Principled BSDF Shader" node, Input #16 doesn't exist. There are 19 inputs, and they should be numbered 0-to-18. But they are numbered 0-to-19 because "16" is skipped over and is not used. Using "16" in a Python script creates no link but also generates no error message. **Exact steps for others to reproduce the error** **Start with a default project** with the "Cube" object, and open a "node editing" window and a "Python console" window. **Enter these Python commands...** material_in_slot_0 = bpy.data.objects["Cube"].material_slots- [x].material material_in_slot_0.use_nodes= True MyShaderNode = material_in_slot_0.node_tree.nodes.new(type = "ShaderNodeBsdfPrincipled") MyBaseColorNode = material_in_slot_0.node_tree.nodes.new(type = "ShaderNodeTexImage") material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs- [x]) #Base color material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[1]) material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[2]) # ...etc... material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[15]) #Transmission - correct material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[16]) #<<< Nothing happens <<< **THIS IS THE BUG** material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[17]) #Normal - but if you count, it should be 16 material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[18]) material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[19]) # Tangent - but if you count, "19" should not exist, but it works material_in_slot_0.node_tree.links.new(MyBaseColorNode.outputs["Color"], MyShaderNode.inputs[20]) #Gives an error, as it should - but "19" should also give an error ![Blender - input 16 is missing - annotated.jpg](https://archive.blender.org/developer/F714399/Blender_-_input_16_is_missing_-_annotated.jpg) **Closing comments** This is my first-ever entry here. I hope I did okay.

Dennis commented

2017-08-16 17:23:12 +02:00

Changed status to: 'Open'

Dennis commented

2017-08-16 17:23:12 +02:00

Added subscriber: @justaviking

Dennis changed title from ~~Principled BSDF Shader node - Input number 16 does not exist, but 17 does~~ to Principled BSDF Shader node - Input number 16 does not exist

2017-08-16 17:29:39 +02:00

Irfan Celik commented

2017-08-16 17:50:41 +02:00

Added subscriber: @irfancelik