GGJ_2017/IronToad_UnityProject/Assets/Shaders/TwoToneDiffuse.shader

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

// Shader created with Shader Forge v1.30 
// Shader Forge (c) Neat Corporation / Joachim Holmer - http://www.acegikmo.com/shaderforge/
// Note: Manually altering this data may prevent you from opening it in Shader Forge
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Shader "Geomantle/TwoToneDiffuse" {
    Properties {
        _Shadows ("Shadows", Range(-1, 1)) = 0
        _Gradiant ("Gradiant", Range(-1, 1)) = -1
        _HighLight ("HighLight", Color) = (1,0.5,0.5,1)
        _LowLight ("LowLight", Color) = (0,0.5,0.5,1)
        [MaterialToggle] _UseTextures ("Use Textures", Float ) = 0
        _HighLightTexture_copy ("HighLight Texture_copy", 2D) = "white" {}
        _LowLightTexture ("LowLight Texture", 2D) = "black" {}
        _NormalMap ("Normal Map", 2D) = "bump" {}
        _GradientMap ("Gradient Map", 2D) = "black" {}
        _PenIntensity ("Pen. Intensity", Range(0, 1)) = 0
    }
    SubShader {
        Tags {
            "RenderType"="Opaque"
        }
        Pass {
            Name "FORWARD"
            Tags {
                "LightMode"="ForwardBase"
            }
            
            
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #define UNITY_PASS_FORWARDBASE
            #include "UnityCG.cginc"
            #include "AutoLight.cginc"
            #include "Lighting.cginc"
            #pragma multi_compile_fwdbase_fullshadows
            #pragma multi_compile_fog
            #pragma exclude_renderers gles3 metal d3d11_9x xbox360 xboxone ps3 ps4 psp2 
            #pragma target 3.0
            uniform float _Shadows;
            float3 LerpnegLerp( float3 Norm , float3 Light , float Slider ){
            float3 retVal = Norm;
            
            int pos = sign(Slider);
            
            retVal = lerp(Norm,(pos * Light), (pos * Slider) / 2);
            
            return retVal;
            
            }
            
            uniform float4 _HighLight;
            uniform float4 _LowLight;
            uniform float _Gradiant;
            float CeilifGrad( float Input , float Slider ){
            float retVal;
            
            float t = ((Input + Slider)/(2*Slider));
            retVal = lerp (0,1,t);
            
            return clamp (retVal, 0.0, 1.0);
            
            }
            
            uniform float _PenIntensity;
            uniform sampler2D _NormalMap; uniform float4 _NormalMap_ST;
            uniform sampler2D _GradientMap; uniform float4 _GradientMap_ST;
            uniform sampler2D _LowLightTexture; uniform float4 _LowLightTexture_ST;
            uniform fixed _UseTextures;
            uniform sampler2D _HighLightTexture_copy; uniform float4 _HighLightTexture_copy_ST;
            struct VertexInput {
                float4 vertex : POSITION;
                float3 normal : NORMAL;
                float4 tangent : TANGENT;
                float2 texcoord0 : TEXCOORD0;
            };
            struct VertexOutput {
                float4 pos : SV_POSITION;
                float2 uv0 : TEXCOORD0;
                float4 posWorld : TEXCOORD1;
                float3 normalDir : TEXCOORD2;
                float3 tangentDir : TEXCOORD3;
                float3 bitangentDir : TEXCOORD4;
                LIGHTING_COORDS(5,6)
                UNITY_FOG_COORDS(7)
            };
            VertexOutput vert (VertexInput v) {
                VertexOutput o = (VertexOutput)0;
                o.uv0 = v.texcoord0;
                o.normalDir = UnityObjectToWorldNormal(v.normal);
                o.tangentDir = normalize( mul( unity_ObjectToWorld, float4( v.tangent.xyz, 0.0 ) ).xyz );
                o.bitangentDir = normalize(cross(o.normalDir, o.tangentDir) * v.tangent.w);
                o.posWorld = mul(unity_ObjectToWorld, v.vertex);
                o.pos = UnityObjectToClipPos(v.vertex );
                UNITY_TRANSFER_FOG(o,o.pos);
                TRANSFER_VERTEX_TO_FRAGMENT(o)
                return o;
            }
            float4 frag(VertexOutput i) : COLOR {
                i.normalDir = normalize(i.normalDir);
                float3x3 tangentTransform = float3x3( i.tangentDir, i.bitangentDir, i.normalDir);
                float3 _NormalMap_var = UnpackNormal(tex2D(_NormalMap,TRANSFORM_TEX(i.uv0, _NormalMap)));
                float3 normalLocal = _NormalMap_var.rgb;
                float3 normalDirection = normalize(mul( normalLocal, tangentTransform )); // Perturbed normals
                float3 lightDirection = normalize(_WorldSpaceLightPos0.xyz);
////// Lighting:
                float attenuation = LIGHT_ATTENUATION(i);
                float4 _LowLightTexture_var = tex2D(_LowLightTexture,TRANSFORM_TEX(i.uv0, _LowLightTexture));
                float3 node_2411 = lerp(_LowLight.rgb,_LowLightTexture_var.rgb,_UseTextures);
                float4 _HighLightTexture_copy_var = tex2D(_HighLightTexture_copy,TRANSFORM_TEX(i.uv0, _HighLightTexture_copy));
                float4 _GradientMap_var = tex2D(_GradientMap,TRANSFORM_TEX(i.uv0, _GradientMap));
                float3 finalColor = lerp(node_2411,lerp(_HighLight.rgb,_HighLightTexture_copy_var.rgb,_UseTextures),(CeilifGrad( dot(LerpnegLerp( normalDirection , lightDirection , _Shadows ),lightDirection) , saturate((_Gradiant+_GradientMap_var.r)) )*lerp(1.0,attenuation,_PenIntensity)));
                fixed4 finalRGBA = fixed4(finalColor,1);
                UNITY_APPLY_FOG(i.fogCoord, finalRGBA);
                return finalRGBA;
            }
            ENDCG
        }
    }
    FallBack "Diffuse"
    CustomEditor "ShaderForgeMaterialInspector"
}