94 lines
2.9 KiB
HLSL
94 lines
2.9 KiB
HLSL
//UCTS_Tess.cginc
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//Unitychan Toon Shader ver.2.0
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//v.2.0.6
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//nobuyuki@unity3d.com
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//https://github.com/unity3d-jp/UnityChanToonShaderVer2_Project
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//(C)Unity Technologies Japan/UCL
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// UNITY_SHADER_NO_UPGRADE
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#ifndef UCTS_TESS
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#define UCTS_TESS
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#ifdef TESSELLATION_ON
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#include "HLSLSupport.cginc" // UNITY_CAN_COMPILE_TESSELLATION
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#include "Lighting.cginc" // UnityTessellationFactors
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#include "Tessellation.cginc"
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#ifdef UNITY_CAN_COMPILE_TESSELLATION
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float _TessPhongStrength;
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float _TessEdgeLength;
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float _TessExtrusionAmount;
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struct VertexInput
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{
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float4 vertex : POSITION;
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float4 tangent : TANGENT;
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float3 normal : NORMAL;
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float4 texcoord0 : TEXCOORD0;
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float4 texcoord1 : TEXCOORD1;
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};
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struct InternalTessInterp_VertexInput
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{
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float4 vertex : INTERNALTESSPOS;
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float4 tangent : TANGENT;
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float3 normal : NORMAL;
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float4 texcoord0 : TEXCOORD0;
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float4 texcoord1 : TEXCOORD1;
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};
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InternalTessInterp_VertexInput tess_VertexInput(VertexInput v)
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{
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InternalTessInterp_VertexInput o;
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o.vertex = v.vertex;
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o.tangent = v.tangent;
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o.normal = v.normal;
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o.texcoord0 = v.texcoord0;
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o.texcoord1 = v.texcoord1;
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return o;
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}
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// tessellation hull constant shader
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UnityTessellationFactors hsconst_VertexInput(InputPatch<InternalTessInterp_VertexInput, 3> v)
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{
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float4 tf = UnityEdgeLengthBasedTess(v[0].vertex, v[1].vertex, v[2].vertex, _TessEdgeLength);
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UnityTessellationFactors o;
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o.edge[0] = tf.x;
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o.edge[1] = tf.y;
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o.edge[2] = tf.z;
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o.inside = tf.w;
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return o;
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}
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// tessellation hull shader
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[UNITY_domain("tri")]
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[UNITY_partitioning("fractional_odd")]
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[UNITY_outputtopology("triangle_cw")]
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[UNITY_patchconstantfunc("hsconst_VertexInput")]
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[UNITY_outputcontrolpoints(3)]
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InternalTessInterp_VertexInput hs_VertexInput(InputPatch<InternalTessInterp_VertexInput, 3> v, uint id : SV_OutputControlPointID)
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{
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return v[id];
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}
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inline VertexInput _ds_VertexInput(UnityTessellationFactors tessFactors, const OutputPatch<InternalTessInterp_VertexInput, 3> vi, float3 bary : SV_DomainLocation)
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{
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VertexInput v;
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v.vertex = vi[0].vertex*bary.x + vi[1].vertex*bary.y + vi[2].vertex*bary.z;
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float3 pp[3];
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for (int i = 0; i < 3; ++i)
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pp[i] = v.vertex.xyz - vi[i].normal * (dot(v.vertex.xyz, vi[i].normal) - dot(vi[i].vertex.xyz, vi[i].normal));
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v.vertex.xyz = _TessPhongStrength * (pp[0] * bary.x + pp[1] * bary.y + pp[2] * bary.z) + (1.0f - _TessPhongStrength) * v.vertex.xyz;
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v.tangent = vi[0].tangent*bary.x + vi[1].tangent*bary.y + vi[2].tangent*bary.z;
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v.normal = vi[0].normal*bary.x + vi[1].normal*bary.y + vi[2].normal*bary.z;
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v.vertex.xyz += v.normal.xyz * _TessExtrusionAmount;
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v.texcoord0 = vi[0].texcoord0*bary.x + vi[1].texcoord0*bary.y + vi[2].texcoord0*bary.z;
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v.texcoord1 = vi[0].texcoord1*bary.x + vi[1].texcoord1*bary.y + vi[2].texcoord1*bary.z;
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return v;
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}
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#endif // UNITY_CAN_COMPILE_TESSELLATION
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#endif // TESSELLATION_ON
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#endif // UCTS_TESS
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