Unite Austin Technical Presentation Shader Question

vDavey · September 21, 2019, 11:33pm

Trying to use the skinning shader from the Unite Austin 2017 presentation. Everything works well except no shadows are cast. Does anyone know how to fix this?

github.com

Unity-Technologies/UniteAustinTechnicalPresentation/blob/master/StressTesting/Assets/Shaders/Standard.shader

// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)

Shader "Skinning Standard"
{
    Properties
    {
        _Color("Color", Color) = (1,1,1,1)
        _MainTex("Albedo", 2D) = "white" {}

        _Cutoff("Alpha Cutoff", Range(0.0, 1.0)) = 0.5

        _Glossiness("Smoothness", Range(0.0, 1.0)) = 0.5
        _GlossMapScale("Smoothness Scale", Range(0.0, 1.0)) = 1.0
        [Enum(Metallic Alpha,0,Albedo Alpha,1)] _SmoothnessTextureChannel ("Smoothness texture channel", Float) = 0

        [Gamma] _Metallic("Metallic", Range(0.0, 1.0)) = 0.0
        _MetallicGlossMap("Metallic", 2D) = "white" {}

        [ToggleOff] _SpecularHighlights("Specular Highlights", Float) = 1.0
        [ToggleOff] _GlossyReflections("Glossy Reflections", Float) = 1.0

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bgolus · September 25, 2019, 3:48am

This appears to be a different project than the one they showed. It doesn’t look like their is any support for shadows at all, and it looks quite intentional, which is unfortunate. Adding support for shadows isn’t a simple task. It might be possible to duplicate the instancing code in that shader to the shadowcaster pass, then change the DrawMeshInstanced call appears to be doing the rendering to include shadows.

vDavey · September 25, 2019, 2:39pm

Thank you! I’ll check this out.

wechat_os_Qy0_X1ITy6VrZHYPJFd58JGlA · April 15, 2020, 10:09am

Hi, have you solved this problem?
I am researching this problem too. I have followed the steps and seems like it works a little bit.
Actually, I have found the solution to make minions cast shadows, off and on, for several months.