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86 lines
2.9 KiB
86 lines
2.9 KiB
//
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// OvrAvatar eye lens shader
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//
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// Generates glint on the eye lens of expressive avatars
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//
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Shader "OvrAvatar/Avatar_EyeLens"
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{
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Properties
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{
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_Cube("Cubemap Reflection", CUBE) = "black" {}
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_ReflectionIntensity("Reflection Intensity", Range(0.0,1.0)) = 0.2
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_GlintStrength("Glint Strength", Range(0, 10)) = 1.57
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_GlintSpead("Glint Spead", Range(32, 2048)) = 600
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_Alpha("Alpha", Range(0.0,1.0)) = 1.0
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}
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SubShader
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{
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Tags { "LightMode" = "ForwardBase" "Queue" = "Transparent" "RenderType" = "Transparent" "IgnoreProjector" = "True" }
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Pass
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{
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Blend SrcAlpha OneMinusSrcAlpha
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#pragma fragmentoption ARB_precision_hint_fastest
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#pragma target 3.0
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#include "UnityCG.cginc"
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#include "UnityLightingCommon.cginc"
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#include "AutoLight.cginc"
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samplerCUBE _Cube;
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half _ReflectionIntensity;
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half _GlintStrength;
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half _GlintSpead;
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half _Alpha;
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struct VertexInput
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{
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float4 vertex : POSITION;
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float3 normal : NORMAL;
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};
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struct VertexOutput
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{
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float4 pos : SV_POSITION;
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float4 posWorld : TEXCOORD1;
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float3 normalDir : TEXCOORD2;
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};
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VertexOutput vert(VertexInput v)
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{
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VertexOutput o = (VertexOutput)0;
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o.normalDir = UnityObjectToWorldNormal(v.normal);
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o.posWorld = mul(unity_ObjectToWorld, v.vertex);
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o.pos = UnityObjectToClipPos(v.vertex);
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return o;
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}
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float4 frag(VertexOutput i) : COLOR
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{
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i.normalDir = normalize(i.normalDir);
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half3 viewDirection = normalize(_WorldSpaceCameraPos.xyz - i.posWorld.xyz);
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half NdotLV = max(0, dot(i.normalDir, normalize(_WorldSpaceLightPos0.xyz + viewDirection)));
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half3 spec = pow(NdotLV, _GlintSpead) * _GlintStrength;
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// Sample the default reflection cubemap using the reflection vector
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half3 viewReflectDirection = reflect(-viewDirection, i.normalDir);
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half4 skyData = UNITY_SAMPLE_TEXCUBE(unity_SpecCube0, viewReflectDirection);
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// Decode cubemap data into actual color
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half3 reflectionColor = DecodeHDR(skyData, unity_SpecCube0_HDR);
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half4 finalColor;
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finalColor.rgb = reflectionColor.rgb * _ReflectionIntensity;
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finalColor.rgb += spec;
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finalColor.a = (finalColor.r + finalColor.g + finalColor.b) / 3;
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return finalColor;
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}
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ENDCG
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}
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}
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FallBack "Diffuse"
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}
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