The metal material does not self-shadowing when using roughness texture.

[serkkz]

I have such material.

metal = Material("brick")
metal.set_metallic(1)
metal.set_roughness(0.45)

This gives the following:

It can be seen that the sphere has artifacts in self-shadowing. I also found out that the problem is related to the roughness map, maybe I'm using it incorrectly.

roughness_tex = loader.loadTexture("tex/metal/roughness.png")
roughness_tex.set_magfilter(SamplerState.FT_linear_mipmap_linear)
roughness_tex.set_minfilter(SamplerState.FT_linear_mipmap_linear)
roughness_tex.set_wrap_u(Texture.WM_repeat)
roughness_tex.set_wrap_v(Texture.WM_repeat)

metal_stage = TextureStage('metal_stage')
metal_stage.set_mode(TextureStage.M_selector)

It looks like this without ambient lighting. Which seems normal to me.

[serkkz]

It seems that I was mistaken in the fact that the metal flag affects this problem.

This is just a duplicate of this problem. 19
My problem is applying a roughness texture.

[Moguri]

Closing as duplicate of #19