296 lines
7.4 KiB
HLSL
296 lines
7.4 KiB
HLSL
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#ifdef USE_HDWIND
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#include "HDWind.cginc"
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#endif
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sampler2D _MainTex;
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sampler2D _Bump;
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fixed4 _Color;
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float _YRotation;
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float _XTurnFix;
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float _CullDistance;
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float _FarCullDistance;
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float _Brightness;
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float _MipmapBias;
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int _InRow;
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int _InCol;
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int _CameraType;
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float4 _CameraPosition;
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float _BillboardWindSpeed;
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float _Smoothness;
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float _Metallic;
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float _Specular;
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float _Occlusion;
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float _NormalStrength;
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//float _Cutoff;
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#ifdef USE_SNOW
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half _SnowAmount;
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fixed4 _SnowColor;
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half _SnowBlendFactor;
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float _SnowBrightness;
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#endif
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#ifdef AT_HUE_VARIATION_ON
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half4 _HueVariation;
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#endif
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struct Input
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{
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float2 uv_MainTex;
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float4 d;
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#ifdef LOD_FADE_CROSSFADE
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float3 dc;
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float crossfade_value;
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#endif
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#ifdef USE_SNOW
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float3 worldNormal; INTERNAL_DATA
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#endif
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};
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void DitherCrossFade(half3 ditherScreenPos, float crossfadeValue)
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{
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half2 projUV = ditherScreenPos.xy / ditherScreenPos.z;
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projUV.xy = frac(projUV.xy + 0.001) + frac(projUV.xy * 2.0 + 0.001);
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half dither = crossfadeValue - (projUV.y + projUV.x) * 0.25;
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clip(dither);
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}
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half3 VS_ComputeDitherScreenPos(float4 clipPos)
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{
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half3 screenPos = ComputeScreenPos(clipPos).xyw;
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screenPos.xy *= _ScreenParams.xy * 0.25;
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return screenPos;
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}
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//#ifdef LOD_FADE_CROSSFADE
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//void VS_ApplyDitherCrossFade(half3 ditherScreenPos, float crossfadeValue)
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//{
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// float fadeValue = ceil(crossfadeValue * 16) / 16.0;
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// half2 projUV = ditherScreenPos.xy / ditherScreenPos.z;
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// projUV.y = frac(projUV.y) * 0.0625 + fadeValue; // quantized lod fade by 16 levels
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// clip(tex2D(_DitherMaskLOD2D, projUV).a - 0.5);
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//}
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//#endif
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UNITY_INSTANCING_BUFFER_START(Props)
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UNITY_INSTANCING_BUFFER_END(Props)
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void vert(inout appdata_full v, out Input o)
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{
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UNITY_INITIALIZE_OUTPUT(Input, o);
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float4 CENTER = v.vertex;
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float3 CORNER = v.normal * v.texcoord2.x;
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float3 worldspaceCenter = mul(unity_ObjectToWorld, CENTER);
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float3 modifiedCameraPos;
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if (_InCol == 1)
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{
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modifiedCameraPos = _WorldSpaceCameraPos;
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modifiedCameraPos.y = worldspaceCenter.y;
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}
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else
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{
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modifiedCameraPos = _WorldSpaceCameraPos.xyz;
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}
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#define cameraPos modifiedCameraPos;
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float3 clipVect;
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clipVect = (worldspaceCenter + float3(0, v.texcoord3.y, 0)) - _CameraPosition;
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#if defined(UNITY_PASS_SHADOWCASTER)
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float3 camVect;
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if (unity_MatrixVP[3][3] == 1)
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camVect = _WorldSpaceLightPos0.w < 0.5 ? _WorldSpaceLightPos0.xyz : worldspaceCenter - _WorldSpaceLightPos0.xyz;
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else
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camVect = worldspaceCenter - cameraPos;
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#define camVectEvenInShadows (worldspaceCenter - cameraPos)
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#else
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float3 camVect = worldspaceCenter - cameraPos;
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#define camVectEvenInShadows camVect
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#endif
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if (length(clipVect) < _CullDistance || length(clipVect) > _FarCullDistance)
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{
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CORNER.xyz *= 0;
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}
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else
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{
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#ifdef LOD_FADE_CROSSFADE
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float distance = length(clipVect) - _CullDistance;
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if (distance < 2)
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{
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o.crossfade_value = 1 - (distance / 2);
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}
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else
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{
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o.crossfade_value = 0.98;
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}
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#endif
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// Create LookAt matrix
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float3 zaxis = normalize(camVect);
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float3 xaxis = normalize(cross(float3(0, 1, 0), zaxis));
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float3 yaxis = cross(zaxis, xaxis);
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float4x4 lookatMatrix = {
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xaxis.x, yaxis.x, zaxis.x, 0,
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xaxis.y, yaxis.y, zaxis.y, 0,
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xaxis.z, yaxis.z, zaxis.z, 0,
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0, 0, 0, 1
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};
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v.vertex = mul(lookatMatrix, float4(CORNER.x, CORNER.y, (yaxis.y - 1.0) * v.texcoord2.y, 1));
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v.vertex.xyz += CENTER.xyz;
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v.normal = -zaxis;
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v.tangent.xyz = xaxis;
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v.tangent.w = -1;
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#ifdef USE_SNOW
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o.worldNormal = mul((float3x3)unity_ObjectToWorld, v.normal);
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#endif
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v.texcoord.x /= _InRow;
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v.texcoord.y /= _InCol;
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float angle;
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float step;
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float2 atanDir = normalize(float2(-zaxis.z, -zaxis.x));
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angle = (atan2(atanDir.y, atanDir.x) / 6.28319) + 0.5; // angle around Y in range 0....1
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angle += v.texcoord1.x;
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angle -= (int)angle;
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step = 1.0 / _InRow;
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v.texcoord.x += step * ((int)((angle + step * 0.5) * _InRow));
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step = 1.0 / _InCol;
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angle = saturate(dot(-zaxis, float3(0, 1, 0)));
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angle = clamp(angle, 0, step*(_InCol - 1));
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v.texcoord.y += step * ((int)((angle + step * 0.5) * _InCol));
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o.d.x = v.texcoord1.y;
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#ifdef AT_HUE_VARIATION_ON
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float hueVariationAmount = frac(CENTER.x + CENTER.y + CENTER.z);
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o.d.y = saturate(hueVariationAmount * _HueVariation.a);
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#endif
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#ifdef LOD_FADE_CROSSFADE
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o.dc = VS_ComputeDitherScreenPos(v.vertex);
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#endif
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#ifdef USE_HDWIND
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#if !defined(UNITY_PASS_SHADOWCASTER)
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float initialBend = 1;
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float stiffness = 1;
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float drag = 0.3;
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float shiverDrag = 0;
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float shiverDirectionality = 1;
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float3 positionWS = TransformObjectToWorld(v.vertex.xyz);
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float3 rootWP = TransformObjectToWorld(CENTER.xyz);
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if (positionWS.y > rootWP.y)
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{
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float3 normalWS = TransformObjectToWorldNormal(v.normal);
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WindData windData;
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ApplyWindDisplacement(positionWS, windData, normalWS, rootWP, stiffness, drag, shiverDrag, shiverDirectionality, initialBend, 20 * _BillboardWindSpeed, _Time);
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v.vertex.xyz = TransformWorldToObject(positionWS).xyz;
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}
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#endif
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#endif
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}
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}
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void surf(Input IN, inout SurfaceOutputStandard o)
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{
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//#ifdef LOD_FADE_CROSSFADE
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// //#define unity_LODFade float4(0.5,0.5,0,0)
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// if (IN.crossfade_value > 0.99)
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// {
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// VS_ApplyDitherCrossFade(IN.dc, IN.crossfade_value);
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// }
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// //DitherCrossFade(IN.dc, IN.crossfade_value);
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//#endif
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fixed4 c = tex2Dbias(_MainTex, half4(IN.uv_MainTex, 0, _MipmapBias)) * _Color;
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#ifdef AT_HUE_VARIATION_ON
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half3 shiftedColor = lerp(c.rgb, _HueVariation.rgb, IN.d.y);
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half maxBase = max(c.r, max(c.g, c.b));
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half newMaxBase = max(shiftedColor.r, max(shiftedColor.g, shiftedColor.b));
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maxBase /= newMaxBase;
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maxBase = maxBase * 0.5f + 0.5f;
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shiftedColor.rgb *= maxBase;
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c.rgb = saturate(shiftedColor);
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#endif
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o.Albedo = c.rgb * IN.d.x *_Color;
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o.Albedo = clamp(o.Albedo * _Brightness, 0, 1);
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o.Normal = tex2D(_Bump, IN.uv_MainTex).rgb * 2.0 - 1.0;
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o.Occlusion = _Occlusion;
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o.Smoothness = _Smoothness;
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o.Metallic = _Metallic;
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#ifdef USE_SNOW
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half d = dot(WorldNormalVector(IN, o.Normal), float3(0, -1, 0)) * 0.5 + 0.5;
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o.Albedo = lerp(o.Albedo, (_SnowColor.xyz * _SnowBrightness), _SnowAmount * d * _SnowBlendFactor);
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#endif
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o.Alpha = c.a;
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}
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void surfSpecular(Input IN, inout SurfaceOutputStandardSpecular o)
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{
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//#ifdef LOD_FADE_CROSSFADE
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// //#define unity_LODFade float4(0.5,0.5,0,0)
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// if (IN.crossfade_value > 0.99)
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// {
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// VS_ApplyDitherCrossFade(IN.dc, IN.crossfade_value);
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// }
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// //DitherCrossFade(IN.dc, IN.crossfade_value);
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//#endif
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fixed4 c = tex2Dbias(_MainTex, half4(IN.uv_MainTex, 0, _MipmapBias)) * _Color;
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#ifdef AT_HUE_VARIATION_ON
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half3 shiftedColor = lerp(c.rgb, _HueVariation.rgb, IN.d.y);
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half maxBase = max(c.r, max(c.g, c.b));
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half newMaxBase = max(shiftedColor.r, max(shiftedColor.g, shiftedColor.b));
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maxBase /= newMaxBase;
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maxBase = maxBase * 0.5f + 0.5f;
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shiftedColor.rgb *= maxBase;
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c.rgb = saturate(shiftedColor);
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#endif
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o.Albedo = c.rgb * IN.d.x *_Color;
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o.Albedo = clamp(o.Albedo * _Brightness, 0, 1);
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o.Normal = tex2D(_Bump, IN.uv_MainTex).rgb * 2.0 - 1.0;
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o.Normal.xy *= _NormalStrength;
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//.Normal = normalize(o.Normal);
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o.Occlusion = _Occlusion;
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o.Smoothness = _Smoothness;
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o.Specular = _Specular;
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#ifdef USE_SNOW
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half d = dot(WorldNormalVector(IN, o.Normal), float3(0, -1, 0)) * 0.5 + 0.5;
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o.Albedo = lerp(o.Albedo, (_SnowColor.xyz * _SnowBrightness), _SnowAmount * d * _SnowBlendFactor);
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#endif
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o.Alpha = c.a;
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//o.Alpha = (o.Alpha - _Cutoff) / max(fwidth(o.Alpha), 0.0001) + 0.5;
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}
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