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41 行
1.3 KiB
41 行
1.3 KiB
/*
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float _Tess;
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float _TessNear;
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float _TessFar;
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float _UseDisplacementfalloff;
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float _DisplacementfalloffNear;
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float _DisplacementfalloffFar;
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*/
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float4 TessellationEdge(float3 p0, float3 p1, float3 p2, float3 n0, float3 n1, float3 n2)
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{
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// if (_TessellationFactorFixed >= 0.0f)
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{
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// return _TessellationFactorFixed.xxxx;
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}
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return DistanceBasedTess(p0, p1, p2, 0.0, _TessellationFactorMaxDistance, unity_ObjectToWorld, _WorldSpaceCameraPos) * _TessellationFactorFixed.xxxx;
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}
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void Displacement(inout Attributes v)
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{
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/*
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float LengthLerp = length(ObjSpaceViewDir(v.vertex));
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LengthLerp -= _DisplacementfalloffNear;
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LengthLerp /= _DisplacementfalloffFar - _DisplacementfalloffNear;
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LengthLerp = 1 - (saturate(LengthLerp));
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float d = ((tex2Dlod(_DispTex, float4(v.texcoord.xy * _Tiling, 0, 0)).r) - _DisplacementCenter) * (_Displacement * LengthLerp);
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d /= max(0.0001, _Tiling);
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*/
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#ifdef _HEIGHTMAP
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float height = (SAMPLE_TEXTURE2D_LOD(ADD_ZERO_IDX(_HeightMap), ADD_ZERO_IDX(sampler_HeightMap), v.uv0, 0).r - ADD_ZERO_IDX(_HeightCenter)) * ADD_IDX(_HeightAmplitude);
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#else
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float height = 0.0;
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#endif
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#if (SHADERPASS != SHADERPASS_VELOCITY) && (SHADERPASS != SHADERPASS_DISTORTION)
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v.positionOS.xyz += height * v.normalOS;
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#endif
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}
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