63 lines
1.6 KiB
Plaintext
63 lines
1.6 KiB
Plaintext
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// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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// Outline shader
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// Material parameters
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float4 _Color;
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float4 _LightColor0;
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float _EdgeThickness = 1.0;
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float4 _MainTex_ST;
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// Textures
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sampler2D _MainTex;
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// Structure from vertex shader to fragment shader
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struct v2f
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{
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float4 pos : SV_POSITION;
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float2 uv : TEXCOORD0;
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};
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// Float types
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#define float_t half
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#define float2_t half2
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#define float3_t half3
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#define float4_t half4
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// Outline thickness multiplier
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#define INV_EDGE_THICKNESS_DIVISOR 0.00285
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// Outline color parameters
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#define SATURATION_FACTOR 0.6
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#define BRIGHTNESS_FACTOR 0.8
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// Vertex shader
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v2f vert( appdata_base v )
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{
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v2f o;
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o.uv = TRANSFORM_TEX( v.texcoord.xy, _MainTex );
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half4 projSpacePos = UnityObjectToClipPos( v.vertex );
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half4 projSpaceNormal = normalize( UnityObjectToClipPos( half4( v.normal, 0 ) ) );
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half4 scaledNormal = _EdgeThickness * INV_EDGE_THICKNESS_DIVISOR * projSpaceNormal; // * projSpacePos.w;
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scaledNormal.z += 0.00001;
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o.pos = projSpacePos + scaledNormal;
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return o;
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}
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// Fragment shader
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float4 frag( v2f i ) : COLOR
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{
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float4_t diffuseMapColor = tex2D( _MainTex, i.uv );
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float_t maxChan = max( max( diffuseMapColor.r, diffuseMapColor.g ), diffuseMapColor.b );
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float4_t newMapColor = diffuseMapColor;
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maxChan -= ( 1.0 / 255.0 );
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float3_t lerpVals = saturate( ( newMapColor.rgb - float3( maxChan, maxChan, maxChan ) ) * 255.0 );
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newMapColor.rgb = lerp( SATURATION_FACTOR * newMapColor.rgb, newMapColor.rgb, lerpVals );
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return float4( BRIGHTNESS_FACTOR * newMapColor.rgb * diffuseMapColor.rgb, diffuseMapColor.a ) * _Color * _LightColor0;
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}
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