Applying metallic in fragment shader

[xVergilx]

I’m trying to implement PBR decal shader, and I’d like to know, is there a way to apply the default “metallic” PBR property in the fragment shader instead of surface one?

For some reason I cannot get surface shader to work with the command buffer setup.
It works when I supply material for the MeshRenderer, but it’s competely ignored when drawed by .DrawMesh() command.

I’ve managed to set the smoothness / roughness via GBuffer1 / SV_TARGET1 / spec.a inside frag shader, but I’m completely have no clue where or how to apply the metallic value. Haven’t found anything on the topic, any ideas?

[xVergilx]

I think I found what I was looking for. It’s called DiffuseAndSpecularFromMetallic();

Much more usefull was to look at fragDeferred function, it has all the good stuff.

For the future reference more:

Metallic reflections

When using the metallic version of the standard shader I set both metallic and smoothness to max and also switch reflections off the whole object becomes black. Does that mean the portion of the reflection that comes from albedo (in case of metals) is first blended into the reflection cube map and then it's sampled back from it (in Unity_GlossyEnvironment()) and blended back onto the object? What I'm trying to say is if Unity_GlossyEnvironment() was only sampling the surrounding environment wi…

And in UnityStandardCore.cginc