575 lines
22 KiB
HLSL
575 lines
22 KiB
HLSL
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#ifndef UNIVERSAL_TERRAIN_LIT_PASSES_INCLUDED
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#define UNIVERSAL_TERRAIN_LIT_PASSES_INCLUDED
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/UnityGBuffer.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/DBuffer.hlsl"
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struct Attributes
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{
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float4 positionOS : POSITION;
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float3 normalOS : NORMAL;
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float2 texcoord : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct Varyings
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{
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float4 uvMainAndLM : TEXCOORD0; // xy: control, zw: lightmap
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#ifndef TERRAIN_SPLAT_BASEPASS
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float4 uvSplat01 : TEXCOORD1; // xy: splat0, zw: splat1
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float4 uvSplat23 : TEXCOORD2; // xy: splat2, zw: splat3
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#endif
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#if defined(_NORMALMAP) && !defined(ENABLE_TERRAIN_PERPIXEL_NORMAL)
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half4 normal : TEXCOORD3; // xyz: normal, w: viewDir.x
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half4 tangent : TEXCOORD4; // xyz: tangent, w: viewDir.y
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half4 bitangent : TEXCOORD5; // xyz: bitangent, w: viewDir.z
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#else
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half3 normal : TEXCOORD3;
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half3 vertexSH : TEXCOORD4; // SH
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#endif
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#ifdef _ADDITIONAL_LIGHTS_VERTEX
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half4 fogFactorAndVertexLight : TEXCOORD6; // x: fogFactor, yzw: vertex light
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#else
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half fogFactor : TEXCOORD6;
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#endif
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float3 positionWS : TEXCOORD7;
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#if defined(REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR)
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float4 shadowCoord : TEXCOORD8;
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#endif
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#if defined(DYNAMICLIGHTMAP_ON)
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float2 dynamicLightmapUV : TEXCOORD9;
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#endif
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#ifdef USE_APV_PROBE_OCCLUSION
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float4 probeOcclusion : TEXCOORD10;
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#endif
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float4 clipPos : SV_POSITION;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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void InitializeInputData(Varyings IN, half3 normalTS, out InputData inputData)
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{
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inputData = (InputData)0;
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inputData.positionWS = IN.positionWS;
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inputData.positionCS = IN.clipPos;
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#if defined(_NORMALMAP) && !defined(ENABLE_TERRAIN_PERPIXEL_NORMAL)
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half3 viewDirWS = half3(IN.normal.w, IN.tangent.w, IN.bitangent.w);
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inputData.tangentToWorld = half3x3(-IN.tangent.xyz, IN.bitangent.xyz, IN.normal.xyz);
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inputData.normalWS = TransformTangentToWorld(normalTS, inputData.tangentToWorld);
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half3 SH = 0;
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#elif defined(ENABLE_TERRAIN_PERPIXEL_NORMAL)
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half3 viewDirWS = GetWorldSpaceNormalizeViewDir(IN.positionWS);
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float2 sampleCoords = (IN.uvMainAndLM.xy / _TerrainHeightmapRecipSize.zw + 0.5f) * _TerrainHeightmapRecipSize.xy;
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half3 normalWS = TransformObjectToWorldNormal(normalize(SAMPLE_TEXTURE2D(_TerrainNormalmapTexture, sampler_TerrainNormalmapTexture, sampleCoords).rgb * 2 - 1));
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half3 tangentWS = cross(GetObjectToWorldMatrix()._13_23_33, normalWS);
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inputData.normalWS = TransformTangentToWorld(normalTS, half3x3(-tangentWS, cross(normalWS, tangentWS), normalWS));
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half3 SH = IN.vertexSH;
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#else
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half3 viewDirWS = GetWorldSpaceNormalizeViewDir(IN.positionWS);
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inputData.normalWS = IN.normal;
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half3 SH = IN.vertexSH;
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#endif
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inputData.normalWS = NormalizeNormalPerPixel(inputData.normalWS);
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inputData.viewDirectionWS = viewDirWS;
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#if defined(REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR)
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inputData.shadowCoord = IN.shadowCoord;
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#elif defined(MAIN_LIGHT_CALCULATE_SHADOWS)
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inputData.shadowCoord = TransformWorldToShadowCoord(inputData.positionWS);
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#else
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inputData.shadowCoord = float4(0, 0, 0, 0);
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#endif
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#ifdef _ADDITIONAL_LIGHTS_VERTEX
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inputData.fogCoord = InitializeInputDataFog(float4(IN.positionWS, 1.0), IN.fogFactorAndVertexLight.x);
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inputData.vertexLighting = IN.fogFactorAndVertexLight.yzw;
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#else
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inputData.fogCoord = InitializeInputDataFog(float4(IN.positionWS, 1.0), IN.fogFactor);
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#endif
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#if defined(DYNAMICLIGHTMAP_ON)
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inputData.bakedGI = SAMPLE_GI(IN.uvMainAndLM.zw, IN.dynamicLightmapUV, SH, inputData.normalWS);
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inputData.shadowMask = SAMPLE_SHADOWMASK(IN.uvMainAndLM.zw);
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#elif !defined(LIGHTMAP_ON) && (defined(PROBE_VOLUMES_L1) || defined(PROBE_VOLUMES_L2))
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inputData.bakedGI = SAMPLE_GI(SH,
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GetAbsolutePositionWS(inputData.positionWS),
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inputData.normalWS,
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inputData.viewDirectionWS,
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inputData.positionCS.xy,
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IN.probeOcclusion,
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inputData.shadowMask);
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#else
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inputData.bakedGI = SAMPLE_GI(IN.uvMainAndLM.zw, SH, inputData.normalWS);
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inputData.shadowMask = SAMPLE_SHADOWMASK(IN.uvMainAndLM.zw);
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#endif
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inputData.normalizedScreenSpaceUV = GetNormalizedScreenSpaceUV(IN.clipPos);
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#if defined(DEBUG_DISPLAY)
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#if defined(DYNAMICLIGHTMAP_ON)
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inputData.dynamicLightmapUV = IN.dynamicLightmapUV;
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#endif
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#if defined(LIGHTMAP_ON)
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inputData.staticLightmapUV = IN.uvMainAndLM.zw;
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#else
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inputData.vertexSH = SH;
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#endif
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#endif
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}
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#ifndef TERRAIN_SPLAT_BASEPASS
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void NormalMapMix(float4 uvSplat01, float4 uvSplat23, inout half4 splatControl, inout half3 mixedNormal)
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{
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#if defined(_NORMALMAP)
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half3 nrm = half(0.0);
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nrm += splatControl.r * UnpackNormalScale(SAMPLE_TEXTURE2D(_Normal0, sampler_Normal0, uvSplat01.xy), _NormalScale0);
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nrm += splatControl.g * UnpackNormalScale(SAMPLE_TEXTURE2D(_Normal1, sampler_Normal0, uvSplat01.zw), _NormalScale1);
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nrm += splatControl.b * UnpackNormalScale(SAMPLE_TEXTURE2D(_Normal2, sampler_Normal0, uvSplat23.xy), _NormalScale2);
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nrm += splatControl.a * UnpackNormalScale(SAMPLE_TEXTURE2D(_Normal3, sampler_Normal0, uvSplat23.zw), _NormalScale3);
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// avoid risk of NaN when normalizing.
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#if !HALF_IS_FLOAT
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nrm.z += half(0.01);
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#else
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nrm.z += 1e-5f;
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#endif
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mixedNormal = normalize(nrm.xyz);
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#endif
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}
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void SplatmapMix(float4 uvMainAndLM, float4 uvSplat01, float4 uvSplat23, inout half4 splatControl, out half weight, out half4 mixedDiffuse, out half4 defaultSmoothness, inout half3 mixedNormal)
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{
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half4 diffAlbedo[4];
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diffAlbedo[0] = SAMPLE_TEXTURE2D(_Splat0, sampler_Splat0, uvSplat01.xy);
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diffAlbedo[1] = SAMPLE_TEXTURE2D(_Splat1, sampler_Splat0, uvSplat01.zw);
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diffAlbedo[2] = SAMPLE_TEXTURE2D(_Splat2, sampler_Splat0, uvSplat23.xy);
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diffAlbedo[3] = SAMPLE_TEXTURE2D(_Splat3, sampler_Splat0, uvSplat23.zw);
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// This might be a bit of a gamble -- the assumption here is that if the diffuseMap has no
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// alpha channel, then diffAlbedo[n].a = 1.0 (and _DiffuseHasAlphaN = 0.0)
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// Prior to coming in, _SmoothnessN is actually set to max(_DiffuseHasAlphaN, _SmoothnessN)
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// This means that if we have an alpha channel, _SmoothnessN is locked to 1.0 and
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// otherwise, the true slider value is passed down and diffAlbedo[n].a == 1.0.
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defaultSmoothness = half4(diffAlbedo[0].a, diffAlbedo[1].a, diffAlbedo[2].a, diffAlbedo[3].a);
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defaultSmoothness *= half4(_Smoothness0, _Smoothness1, _Smoothness2, _Smoothness3);
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#ifndef _TERRAIN_BLEND_HEIGHT // density blending
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if(_NumLayersCount <= 4)
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{
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// 20.0 is the number of steps in inputAlphaMask (Density mask. We decided 20 empirically)
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half4 opacityAsDensity = saturate((half4(diffAlbedo[0].a, diffAlbedo[1].a, diffAlbedo[2].a, diffAlbedo[3].a) - (1 - splatControl)) * 20.0);
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opacityAsDensity += 0.001h * splatControl; // if all weights are zero, default to what the blend mask says
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half4 useOpacityAsDensityParam = { _DiffuseRemapScale0.w, _DiffuseRemapScale1.w, _DiffuseRemapScale2.w, _DiffuseRemapScale3.w }; // 1 is off
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splatControl = lerp(opacityAsDensity, splatControl, useOpacityAsDensityParam);
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}
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#endif
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// Now that splatControl has changed, we can compute the final weight and normalize
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weight = dot(splatControl, 1.0h);
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#ifdef TERRAIN_SPLAT_ADDPASS
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clip(weight <= 0.005h ? -1.0h : 1.0h);
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#endif
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#ifndef _TERRAIN_BASEMAP_GEN
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// Normalize weights before lighting and restore weights in final modifier functions so that the overal
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// lighting result can be correctly weighted.
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splatControl /= (weight + HALF_MIN);
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#endif
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mixedDiffuse = 0.0h;
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mixedDiffuse += diffAlbedo[0] * half4(_DiffuseRemapScale0.rgb * splatControl.rrr, 1.0h);
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mixedDiffuse += diffAlbedo[1] * half4(_DiffuseRemapScale1.rgb * splatControl.ggg, 1.0h);
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mixedDiffuse += diffAlbedo[2] * half4(_DiffuseRemapScale2.rgb * splatControl.bbb, 1.0h);
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mixedDiffuse += diffAlbedo[3] * half4(_DiffuseRemapScale3.rgb * splatControl.aaa, 1.0h);
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NormalMapMix(uvSplat01, uvSplat23, splatControl, mixedNormal);
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}
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#endif
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#ifdef _TERRAIN_BLEND_HEIGHT
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void HeightBasedSplatModify(inout half4 splatControl, in half4 masks[4])
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{
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// heights are in mask blue channel, we multiply by the splat Control weights to get combined height
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half4 splatHeight = half4(masks[0].b, masks[1].b, masks[2].b, masks[3].b) * splatControl.rgba;
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half maxHeight = max(splatHeight.r, max(splatHeight.g, max(splatHeight.b, splatHeight.a)));
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// Ensure that the transition height is not zero.
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half transition = max(_HeightTransition, 1e-5);
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// This sets the highest splat to "transition", and everything else to a lower value relative to that, clamping to zero
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// Then we clamp this to zero and normalize everything
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half4 weightedHeights = splatHeight + transition - maxHeight.xxxx;
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weightedHeights = max(0, weightedHeights);
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// We need to add an epsilon here for active layers (hence the blendMask again)
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// so that at least a layer shows up if everything's too low.
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weightedHeights = (weightedHeights + 1e-6) * splatControl;
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// Normalize (and clamp to epsilon to keep from dividing by zero)
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half sumHeight = max(dot(weightedHeights, half4(1, 1, 1, 1)), 1e-6);
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splatControl = weightedHeights / sumHeight.xxxx;
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}
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#endif
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void SplatmapFinalColor(inout half4 color, half fogCoord)
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{
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color.rgb *= color.a;
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#ifndef TERRAIN_GBUFFER // Technically we don't need fogCoord, but it is still passed from the vertex shader.
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#ifdef TERRAIN_SPLAT_ADDPASS
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color.rgb = MixFogColor(color.rgb, half3(0,0,0), fogCoord);
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#else
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color.rgb = MixFog(color.rgb, fogCoord);
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#endif
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#endif
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}
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void SetupTerrainDebugTextureData(inout InputData inputData, float2 uv)
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{
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#if defined(DEBUG_DISPLAY)
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#if defined(TERRAIN_SPLAT_ADDPASS)
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if (_DebugMipInfoMode != DEBUGMIPINFOMODE_NONE)
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{
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discard; // Layer 4 & beyond are done additively, doesn't make sense for the mipmap streaming debug views -> stop.
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}
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#endif
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switch (_DebugMipMapTerrainTextureMode)
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{
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case DEBUGMIPMAPMODETERRAINTEXTURE_CONTROL:
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SETUP_DEBUG_TEXTURE_DATA_FOR_TEX(inputData, TRANSFORM_TEX(uv, _Control), _Control);
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break;
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case DEBUGMIPMAPMODETERRAINTEXTURE_LAYER0:
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SETUP_DEBUG_TEXTURE_DATA_FOR_TEX(inputData, TRANSFORM_TEX(uv, _Splat0), _Splat0);
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break;
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case DEBUGMIPMAPMODETERRAINTEXTURE_LAYER1:
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SETUP_DEBUG_TEXTURE_DATA_FOR_TEX(inputData, TRANSFORM_TEX(uv, _Splat1), _Splat1);
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break;
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case DEBUGMIPMAPMODETERRAINTEXTURE_LAYER2:
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SETUP_DEBUG_TEXTURE_DATA_FOR_TEX(inputData, TRANSFORM_TEX(uv, _Splat2), _Splat2);
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break;
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case DEBUGMIPMAPMODETERRAINTEXTURE_LAYER3:
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SETUP_DEBUG_TEXTURE_DATA_FOR_TEX(inputData, TRANSFORM_TEX(uv, _Splat3), _Splat3);
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break;
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default:
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break;
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}
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// TERRAIN_STREAM_INFO: no streamInfo will have been set (no MeshRenderer); set status to "6" to reflect in the debug status that this is a terrain
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// also, set the per-material status to "4" to indicate warnings
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inputData.streamInfo = TERRAIN_STREAM_INFO;
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#endif
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}
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///////////////////////////////////////////////////////////////////////////////
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// Vertex and Fragment functions //
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///////////////////////////////////////////////////////////////////////////////
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// Used in Standard Terrain shader
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Varyings SplatmapVert(Attributes v)
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{
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Varyings o = (Varyings)0;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
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TerrainInstancing(v.positionOS, v.normalOS, v.texcoord);
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VertexPositionInputs Attributes = GetVertexPositionInputs(v.positionOS.xyz);
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o.uvMainAndLM.xy = v.texcoord;
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o.uvMainAndLM.zw = v.texcoord * unity_LightmapST.xy + unity_LightmapST.zw;
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#ifndef TERRAIN_SPLAT_BASEPASS
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o.uvSplat01.xy = TRANSFORM_TEX(v.texcoord, _Splat0);
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o.uvSplat01.zw = TRANSFORM_TEX(v.texcoord, _Splat1);
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o.uvSplat23.xy = TRANSFORM_TEX(v.texcoord, _Splat2);
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o.uvSplat23.zw = TRANSFORM_TEX(v.texcoord, _Splat3);
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#endif
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#if defined(DYNAMICLIGHTMAP_ON)
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o.dynamicLightmapUV = v.texcoord * unity_DynamicLightmapST.xy + unity_DynamicLightmapST.zw;
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#endif
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#if defined(_NORMALMAP) && !defined(ENABLE_TERRAIN_PERPIXEL_NORMAL)
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half3 viewDirWS = GetWorldSpaceNormalizeViewDir(Attributes.positionWS);
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float4 vertexTangent = float4(cross(float3(0, 0, 1), v.normalOS), 1.0);
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VertexNormalInputs normalInput = GetVertexNormalInputs(v.normalOS, vertexTangent);
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o.normal = half4(normalInput.normalWS, viewDirWS.x);
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o.tangent = half4(normalInput.tangentWS, viewDirWS.y);
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o.bitangent = half4(normalInput.bitangentWS, viewDirWS.z);
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#else
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o.normal = TransformObjectToWorldNormal(v.normalOS);
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OUTPUT_SH4(Attributes.positionWS, o.normal.xyz, GetWorldSpaceNormalizeViewDir(Attributes.positionWS), o.vertexSH, o.probeOcclusion);
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#endif
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half fogFactor = 0;
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#if !defined(_FOG_FRAGMENT)
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fogFactor = ComputeFogFactor(Attributes.positionCS.z);
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#endif
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#ifdef _ADDITIONAL_LIGHTS_VERTEX
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o.fogFactorAndVertexLight.x = fogFactor;
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o.fogFactorAndVertexLight.yzw = VertexLighting(Attributes.positionWS, o.normal.xyz);
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#else
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o.fogFactor = fogFactor;
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#endif
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o.positionWS = Attributes.positionWS;
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o.clipPos = Attributes.positionCS;
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#if defined(REQUIRES_VERTEX_SHADOW_COORD_INTERPOLATOR)
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o.shadowCoord = GetShadowCoord(Attributes);
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#endif
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return o;
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}
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void ComputeMasks(out half4 masks[4], half4 hasMask, Varyings IN)
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{
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masks[0] = 0.5h;
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masks[1] = 0.5h;
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masks[2] = 0.5h;
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masks[3] = 0.5h;
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#ifdef _MASKMAP
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masks[0] = lerp(masks[0], SAMPLE_TEXTURE2D(_Mask0, sampler_Mask0, IN.uvSplat01.xy), hasMask.x);
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masks[1] = lerp(masks[1], SAMPLE_TEXTURE2D(_Mask1, sampler_Mask0, IN.uvSplat01.zw), hasMask.y);
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masks[2] = lerp(masks[2], SAMPLE_TEXTURE2D(_Mask2, sampler_Mask0, IN.uvSplat23.xy), hasMask.z);
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masks[3] = lerp(masks[3], SAMPLE_TEXTURE2D(_Mask3, sampler_Mask0, IN.uvSplat23.zw), hasMask.w);
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#endif
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masks[0] *= _MaskMapRemapScale0.rgba;
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masks[0] += _MaskMapRemapOffset0.rgba;
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masks[1] *= _MaskMapRemapScale1.rgba;
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masks[1] += _MaskMapRemapOffset1.rgba;
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masks[2] *= _MaskMapRemapScale2.rgba;
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masks[2] += _MaskMapRemapOffset2.rgba;
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masks[3] *= _MaskMapRemapScale3.rgba;
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masks[3] += _MaskMapRemapOffset3.rgba;
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}
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// Used in Standard Terrain shader
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#ifdef TERRAIN_GBUFFER
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FragmentOutput SplatmapFragment(Varyings IN)
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#else
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void SplatmapFragment(
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Varyings IN
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, out half4 outColor : SV_Target0
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#ifdef _WRITE_RENDERING_LAYERS
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, out float4 outRenderingLayers : SV_Target1
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#endif
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)
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#endif
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(IN);
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#ifdef _ALPHATEST_ON
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ClipHoles(IN.uvMainAndLM.xy);
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#endif
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half3 normalTS = half3(0.0h, 0.0h, 1.0h);
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#ifdef TERRAIN_SPLAT_BASEPASS
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half3 albedo = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, IN.uvMainAndLM.xy).rgb;
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half smoothness = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, IN.uvMainAndLM.xy).a;
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half metallic = SAMPLE_TEXTURE2D(_MetallicTex, sampler_MetallicTex, IN.uvMainAndLM.xy).r;
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half alpha = 1;
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half occlusion = 1;
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#else
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half4 hasMask = half4(_LayerHasMask0, _LayerHasMask1, _LayerHasMask2, _LayerHasMask3);
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half4 masks[4];
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ComputeMasks(masks, hasMask, IN);
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float2 splatUV = (IN.uvMainAndLM.xy * (_Control_TexelSize.zw - 1.0f) + 0.5f) * _Control_TexelSize.xy;
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half4 splatControl = SAMPLE_TEXTURE2D(_Control, sampler_Control, splatUV);
|
|
|
|
half alpha = dot(splatControl, 1.0h);
|
|
#ifdef _TERRAIN_BLEND_HEIGHT
|
|
// disable Height Based blend when there are more than 4 layers (multi-pass breaks the normalization)
|
|
if (_NumLayersCount <= 4)
|
|
HeightBasedSplatModify(splatControl, masks);
|
|
#endif
|
|
|
|
half weight;
|
|
half4 mixedDiffuse;
|
|
half4 defaultSmoothness;
|
|
SplatmapMix(IN.uvMainAndLM, IN.uvSplat01, IN.uvSplat23, splatControl, weight, mixedDiffuse, defaultSmoothness, normalTS);
|
|
half3 albedo = mixedDiffuse.rgb;
|
|
|
|
half4 defaultMetallic = half4(_Metallic0, _Metallic1, _Metallic2, _Metallic3);
|
|
half4 defaultOcclusion = half4(_MaskMapRemapScale0.g, _MaskMapRemapScale1.g, _MaskMapRemapScale2.g, _MaskMapRemapScale3.g) +
|
|
half4(_MaskMapRemapOffset0.g, _MaskMapRemapOffset1.g, _MaskMapRemapOffset2.g, _MaskMapRemapOffset3.g);
|
|
|
|
half4 maskSmoothness = half4(masks[0].a, masks[1].a, masks[2].a, masks[3].a);
|
|
defaultSmoothness = lerp(defaultSmoothness, maskSmoothness, hasMask);
|
|
half smoothness = dot(splatControl, defaultSmoothness);
|
|
|
|
half4 maskMetallic = half4(masks[0].r, masks[1].r, masks[2].r, masks[3].r);
|
|
defaultMetallic = lerp(defaultMetallic, maskMetallic, hasMask);
|
|
half metallic = dot(splatControl, defaultMetallic);
|
|
|
|
half4 maskOcclusion = half4(masks[0].g, masks[1].g, masks[2].g, masks[3].g);
|
|
defaultOcclusion = lerp(defaultOcclusion, maskOcclusion, hasMask);
|
|
half occlusion = dot(splatControl, defaultOcclusion);
|
|
#endif
|
|
|
|
InputData inputData;
|
|
InitializeInputData(IN, normalTS, inputData);
|
|
SetupTerrainDebugTextureData(inputData, IN.uvMainAndLM.xy);
|
|
|
|
#if defined(_DBUFFER)
|
|
half3 specular = half3(0.0h, 0.0h, 0.0h);
|
|
ApplyDecal(IN.clipPos,
|
|
albedo,
|
|
specular,
|
|
inputData.normalWS,
|
|
metallic,
|
|
occlusion,
|
|
smoothness);
|
|
#endif
|
|
|
|
#ifdef TERRAIN_GBUFFER
|
|
|
|
BRDFData brdfData;
|
|
InitializeBRDFData(albedo, metallic, /* specular */ half3(0.0h, 0.0h, 0.0h), smoothness, alpha, brdfData);
|
|
|
|
// Baked lighting.
|
|
half4 color;
|
|
Light mainLight = GetMainLight(inputData.shadowCoord, inputData.positionWS, inputData.shadowMask);
|
|
MixRealtimeAndBakedGI(mainLight, inputData.normalWS, inputData.bakedGI, inputData.shadowMask);
|
|
color.rgb = GlobalIllumination(brdfData, inputData.bakedGI, occlusion, inputData.positionWS, inputData.normalWS, inputData.viewDirectionWS);
|
|
color.a = alpha;
|
|
SplatmapFinalColor(color, inputData.fogCoord);
|
|
|
|
// Dynamic lighting: emulate SplatmapFinalColor() by scaling gbuffer material properties. This will not give the same results
|
|
// as forward renderer because we apply blending pre-lighting instead of post-lighting.
|
|
// Blending of smoothness and normals is also not correct but close enough?
|
|
brdfData.albedo.rgb *= alpha;
|
|
brdfData.diffuse.rgb *= alpha;
|
|
brdfData.specular.rgb *= alpha;
|
|
brdfData.reflectivity *= alpha;
|
|
inputData.normalWS = inputData.normalWS * alpha;
|
|
smoothness *= alpha;
|
|
|
|
return BRDFDataToGbuffer(brdfData, inputData, smoothness, color.rgb, occlusion);
|
|
|
|
#else
|
|
|
|
half4 color = UniversalFragmentPBR(inputData, albedo, metallic, /* specular */ half3(0.0h, 0.0h, 0.0h), smoothness, occlusion, /* emission */ half3(0, 0, 0), alpha);
|
|
|
|
SplatmapFinalColor(color, inputData.fogCoord);
|
|
|
|
outColor = half4(color.rgb, 1.0h);
|
|
|
|
#ifdef _WRITE_RENDERING_LAYERS
|
|
uint renderingLayers = GetMeshRenderingLayer();
|
|
outRenderingLayers = float4(EncodeMeshRenderingLayer(renderingLayers), 0, 0, 0);
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
// Shadow pass
|
|
|
|
// Shadow Casting Light geometric parameters. These variables are used when applying the shadow Normal Bias and are set by UnityEngine.Rendering.Universal.ShadowUtils.SetupShadowCasterConstantBuffer in com.unity.render-pipelines.universal/Runtime/ShadowUtils.cs
|
|
// For Directional lights, _LightDirection is used when applying shadow Normal Bias.
|
|
// For Spot lights and Point lights, _LightPosition is used to compute the actual light direction because it is different at each shadow caster geometry vertex.
|
|
float3 _LightDirection;
|
|
float3 _LightPosition;
|
|
|
|
struct AttributesLean
|
|
{
|
|
float4 position : POSITION;
|
|
float3 normalOS : NORMAL;
|
|
float2 texcoord : TEXCOORD0;
|
|
UNITY_VERTEX_INPUT_INSTANCE_ID
|
|
};
|
|
|
|
struct VaryingsLean
|
|
{
|
|
float4 clipPos : SV_POSITION;
|
|
float2 texcoord : TEXCOORD0;
|
|
UNITY_VERTEX_OUTPUT_STEREO
|
|
};
|
|
|
|
VaryingsLean ShadowPassVertex(AttributesLean v)
|
|
{
|
|
VaryingsLean o = (VaryingsLean)0;
|
|
UNITY_SETUP_INSTANCE_ID(v);
|
|
TerrainInstancing(v.position, v.normalOS, v.texcoord);
|
|
|
|
float3 positionWS = TransformObjectToWorld(v.position.xyz);
|
|
float3 normalWS = TransformObjectToWorldNormal(v.normalOS);
|
|
|
|
#if _CASTING_PUNCTUAL_LIGHT_SHADOW
|
|
float3 lightDirectionWS = normalize(_LightPosition - positionWS);
|
|
#else
|
|
float3 lightDirectionWS = _LightDirection;
|
|
#endif
|
|
|
|
float4 clipPos = TransformWorldToHClip(ApplyShadowBias(positionWS, normalWS, lightDirectionWS));
|
|
|
|
#if UNITY_REVERSED_Z
|
|
clipPos.z = min(clipPos.z, UNITY_NEAR_CLIP_VALUE);
|
|
#else
|
|
clipPos.z = max(clipPos.z, UNITY_NEAR_CLIP_VALUE);
|
|
#endif
|
|
|
|
o.clipPos = clipPos;
|
|
|
|
o.texcoord = v.texcoord;
|
|
|
|
return o;
|
|
}
|
|
|
|
half4 ShadowPassFragment(VaryingsLean IN) : SV_TARGET
|
|
{
|
|
#ifdef _ALPHATEST_ON
|
|
ClipHoles(IN.texcoord);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
// Depth pass
|
|
|
|
VaryingsLean DepthOnlyVertex(AttributesLean v)
|
|
{
|
|
VaryingsLean o = (VaryingsLean)0;
|
|
UNITY_SETUP_INSTANCE_ID(v);
|
|
UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
|
|
TerrainInstancing(v.position, v.normalOS);
|
|
o.clipPos = TransformObjectToHClip(v.position.xyz);
|
|
o.texcoord = v.texcoord;
|
|
return o;
|
|
}
|
|
|
|
half4 DepthOnlyFragment(VaryingsLean IN) : SV_TARGET
|
|
{
|
|
#ifdef _ALPHATEST_ON
|
|
ClipHoles(IN.texcoord);
|
|
#endif
|
|
#ifdef SCENESELECTIONPASS
|
|
// We use depth prepass for scene selection in the editor, this code allow to output the outline correctly
|
|
return half4(_ObjectId, _PassValue, 1.0, 1.0);
|
|
#endif
|
|
return IN.clipPos.z;
|
|
}
|
|
|
|
#endif
|