WIP

UniUnlit/Editor/UniUnlitEditor.cs

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+using System;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+
+namespace UniGLTF
+{
+    public class UniUnlitEditor : ShaderGUI
+    {
+        public override void OnGUI(MaterialEditor materialEditor, MaterialProperty[] properties)
+        {
+            base.OnGUI(materialEditor, properties);
+        }
+    }
+}

UniUnlit/Resources/NewSurfaceShader.shader

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+Shader "Custom/NewSurfaceShader" {
+	Properties {
+		_Color ("Color", Color) = (1,1,1,1)
+		_MainTex ("Albedo (RGB)", 2D) = "white" {}
+		_Glossiness ("Smoothness", Range(0,1)) = 0.5
+		_Metallic ("Metallic", Range(0,1)) = 0.0
+	}
+	SubShader {
+		Tags { "RenderType"="Opaque" }
+		LOD 200
+
+		CGPROGRAM
+		// Physically based Standard lighting model, and enable shadows on all light types
+		#pragma surface surf Standard fullforwardshadows
+
+		// Use shader model 3.0 target, to get nicer looking lighting
+		#pragma target 3.0
+
+		sampler2D _MainTex;
+
+		struct Input {
+			float2 uv_MainTex;
+		};
+
+		half _Glossiness;
+		half _Metallic;
+		fixed4 _Color;
+
+		// Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.
+		// See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.
+		// #pragma instancing_options assumeuniformscaling
+		UNITY_INSTANCING_CBUFFER_START(Props)
+			// put more per-instance properties here
+		UNITY_INSTANCING_CBUFFER_END
+
+		void surf (Input IN, inout SurfaceOutputStandard o) {
+			// Albedo comes from a texture tinted by color
+			fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;
+			o.Albedo = c.rgb;
+			// Metallic and smoothness come from slider variables
+			o.Metallic = _Metallic;
+			o.Smoothness = _Glossiness;
+			o.Alpha = c.a;
+		}
+		ENDCG
+	}
+	FallBack "Diffuse"
+}

UniUnlit/Resources/UniUnlit.shader

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+Shader "UniGLTF/UniUnlit"
+{
+	Properties
+	{
+		_MainTex ("Texture", 2D) = "white" {}
+		_Color ("Main Color", COLOR) = (1,1,1,1)
+
+        [HideInInspector] _CullMode ("_CullMode", Float) = 2.0
+        [HideInInspector] _SrcBlend ("_SrcBlend", Float) = 1.0
+        [HideInInspector] _DstBlend ("_DstBlend", Float) = 0.0
+
+		// ZWrite
+		// VertexColor
+	}
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		LOD 100
+
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+			// make fog work
+			#pragma multi_compile_fog
+
+			#include "UnityCG.cginc"
+
+			struct appdata
+			{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f
+			{
+				float2 uv : TEXCOORD0;
+				UNITY_FOG_COORDS(1)
+				float4 vertex : SV_POSITION;
+			};
+
+			sampler2D _MainTex;
+			float4 _MainTex_ST;
+			fixed4 _Color;
+
+			v2f vert (appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
+				UNITY_TRANSFER_FOG(o,o.vertex);
+				return o;
+			}
+
+			fixed4 frag (v2f i) : SV_Target
+			{
+				// sample the texture
+				fixed4 col = tex2D(_MainTex, i.uv) * _Color;
+				// apply fog
+				UNITY_APPLY_FOG(i.fogCoord, col);
+				return col;
+			}
+			ENDCG
+		}
+	}
+	CustomEditor "UniGLTF.UniUnlitEditor"
+}