90 lines
2.1 KiB
Plaintext
90 lines
2.1 KiB
Plaintext
Shader "Hidden/Griffin/SubdivLivePreview2"
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{
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Properties
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{
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_Color ("Line Color", Color) = (1,1,1,1)
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_HeightMap ("Height Map", 2D) = "black" {}
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_Dimension ("Dimension", Vector) = (0,0,0,0)
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_SubdivMap ("Subdiv Map", 2D) = "black" {}
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_SubdivRange("Subdiv Range", Vector) = (0,0,0,0)
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_Mask ("Mask", 2D) = "white" {}
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}
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SubShader
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{
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Pass
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{
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Tags { "RenderType"="Transparent" "Queue"="Transparent" }
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Blend SrcAlpha OneMinusSrcAlpha
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ZWrite Off
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ZTest Always
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LOD 200
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CGPROGRAM
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#include "UnityCG.cginc"
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#include "LivePreviewCommon.cginc"
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#pragma vertex vert
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#pragma fragment frag
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struct v2f
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{
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float4 pos : POSITION; // vertex position
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float2 heightMapUv : TEXCOORD1;
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float4 worldPos : TEXCOORD2;
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};
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float4 _Color;
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sampler2D _HeightMap;
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float4 _Dimension;
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float4 _BoundMin;
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float4 _BoundMax;
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sampler2D _SubdivMap;
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float4 _SubdivRange;
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sampler2D _Mask;
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float4x4 _WorldPointToMask;
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v2f vert(appdata_base v)
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{
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v2f output;
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float4 worldPos = mul(unity_ObjectToWorld, v.vertex);
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float4 heightMapUv = float4(
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(worldPos.x-_BoundMin.x)/(_BoundMax.x-_BoundMin.x),
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(worldPos.z-_BoundMin.z)/(_BoundMax.z-_BoundMin.z),
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0, 0
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);
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float newHeight = GriffinDecodeFloatRG(tex2Dlod(_HeightMap, heightMapUv).rg)*_Dimension.y;
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v.vertex.y = newHeight;
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output.pos = UnityObjectToClipPos(v.vertex);
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output.heightMapUv = heightMapUv;
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output.worldPos = worldPos;
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return output;
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}
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float4 frag(v2f input) : COLOR
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{
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float2 maskUv = mul(_WorldPointToMask, input.worldPos).xz;
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if (maskUv.x < 0) discard;
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if (maskUv.x > 1) discard;
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if (maskUv.y < 0) discard;
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if (maskUv.y > 1) discard;
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float4 col = _Color;
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float subdivValue = tex2D(_SubdivMap, input.heightMapUv.xy).r;
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float maskValue = tex2D(_Mask, maskUv).r;
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col.a *= col.a*maskValue*(subdivValue >= _SubdivRange.x)*(subdivValue <= _SubdivRange.y);
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return col;
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}
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ENDCG
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}
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}
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}
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