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Assets/Alloy/Shaders/Definition/Hair.cginc

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+// Alloy Physical Shader Framework
+// Copyright 2013-2017 RUST LLC.
+// http://www.alloy.rustltd.com/
+
+/////////////////////////////////////////////////////////////////////////////////
+/// @file Hair.cginc
+/// @brief Hair surface shader definition.
+/////////////////////////////////////////////////////////////////////////////////
+
+#ifndef ALLOY_SHADERS_DEFINITION_HAIR_CGINC
+#define ALLOY_SHADERS_DEFINITION_HAIR_CGINC
+
+#define A_NORMAL_MAPPING_ON
+#define A_AMBIENT_OCCLUSION_ON
+#define A_WETNESS_POROSITY_OFF
+#define A_WETNESS_NORMAL_MAP_OFF
+
+#include "Assets/Alloy/Shaders/Lighting/Hair.cginc"
+#include "Assets/Alloy/Shaders/Type/Standard.cginc"
+
+void aSurfaceShader(
+    inout ASurface s)
+{
+
+    aDissolve(s);
+
+    half4 base = aBase(s);
+
+    s.baseColor = base.rgb;
+    s.opacity = base.a;
+    aCutout(s);
+
+    half4 material = aSampleMaterial(s);
+    
+    // Preshift down so a middle-gray texture can push the highlight up or down!
+    half shift = material.A_METALLIC_CHANNEL - 0.5h;
+    s.highlightTint0 = _HighlightTint0 * material.A_SPECULARITY_CHANNEL; // Noise
+    s.highlightShift0 = _HighlightShift0 + shift;
+    s.highlightShift1 = _HighlightShift1 + shift;
+    
+    s.metallic = 0.0h;
+    s.ambientOcclusion = aLerpOneTo(material.A_AO_CHANNEL, _Occlusion);
+    s.specularity = _HairSpecularity;
+    s.roughness = material.A_ROUGHNESS_CHANNEL;
+    
+    half theta = radians(_AnisoAngle);
+    s.highlightTangent = half3(cos(theta), sin(theta), 0.0h);
+    s.normalTangent = A_NT(s, aSampleBump(s));
+     
+    aDecal(s);
+    aWetness(s);
+    aRim(s);
+    aEmission(s);
+}
+
+#endif // ALLOY_SHADERS_DEFINITION_HAIR_CGINC