Advanced Shader

packages/custom-material/src/advanced-shader/eye/Eye.gs

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+Shader "/eyes/Eye.gs" {
+  EditorProperties {
+  Header("Sclera") {
+    material_ScleraColor("Sclera Color", Color) = (1,1,1,1);
+    material_ScleraSize("Sclera Size", Range(0, 5, 0.01)) = 1.0;
+    material_Metal("Sclera Specular", Range(0,1,0.01) ) = 0.2;
+    material_Roughness("Sclera Roughness", Range( 0, 1, 0.01 ) ) = 0.2;
+    material_ScleraNormalStrength("Sclera NormalStrength", Range(0, 5, 0.01)) = 1;
+    material_ScleraTexture("Sclera Texture", Texture2D);
+    material_ScleraNormal("Sclera NormalTexture", Texture2D);
+    material_ScleraMask("Sclera Mask", Texture2D);
+    }
+  Header("Iris") {
+    material_IrisColor("Iris Color", Color) = (1,1,1,1);
+    material_PupilSize("Pupil Dilation", Vector2) =(0.3, 0.3);
+    material_Limbal("Limbal Ring Amount", Range(0, 1, 0.01)) = 0.5;
+    material_IrisSize("Iris Size", Range(0, 5, 0.01)) = 2;
+    material_Parallax("Parallax Layer", Range(0, 0.5, 0.01)) = 0.08;
+    material_IrisNormalStrength("Iris NormalStrength", Range(0, 5, 0.01)) = 1;
+
+    material_IrisTexture("Iris Texture", Texture2D);
+    material_IrisNormal("Iris NormalTexture", Texture2D);
+    }
+
+  Header("Common") {
+    material_AlphaCutoff( "AlphaCutoff", Range(0, 1, 0.01) ) = 0;
+    }
+  }
+
+  EditorMacros {
+    Header("Conditional Macors") {
+      MATERIAL_IS_TRANSPARENT("IS_TRANSPARENT");
+      MATERIAL_IS_ALPHA_CUTOFF("IS_ALPHA_CUTOFF");
+      MATERIAL_HAS_SCLERA_NORMAL("HAS_SCLERA_NORMAL");
+      MATERIAL_HAS_IRIS_NORMAL("HAS_IRIS_NORMAL");
+      MATERIAL_HAS_SCLERA_MASK("HAS_SCLERA_MASK");
+      MATERIAL_HAS_IRIS_TEXTURE("HAS_IRIS_TEXTURE");
+      MATERIAL_HAS_SCLERA_TEXTURE("HAS_SCLERA_TEXTURE");
+    }
+
+  }
+
+  SubShader "Default" {
+    UsePass "pbr/Default/ShadowCaster"
+
+    Pass "Forward Pass" {
+      Tags { pipelineStage = "Forward"} 
+
+      #define IS_METALLIC_WORKFLOW
+
+      VertexShader = PBRVertex;
+      FragmentShader = PBRFragment;
+
+      #include "./EyeForwardPass.glsl"
+      }
+    }
+}
+

packages/custom-material/src/advanced-shader/eye/EyeForwardPass.glsl

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+#ifndef FORWARD_PASS_PBR_INCLUDED
+#define FORWARD_PASS_PBR_INCLUDED
+
+#include "Common.glsl"
+#include "Fog.glsl"
+
+#include "AttributesPBR.glsl"
+#include "VaryingsPBR.glsl"
+#include "LightDirectPBR.glsl"
+#include "LightIndirectPBR.glsl"
+
+#include "VertexPBR.glsl"
+#include "FragmentPBR.glsl"
+
+#include "./EyeFunction.glsl"
+
+Varyings PBRVertex(Attributes attributes) {
+  Varyings varyings;
+
+  // Don't need tilling offest
+  varyings.uv = attributes.TEXCOORD_0;
+
+  #ifdef RENDERER_HAS_UV1
+      varyings.uv1 = attributes.TEXCOORD_1;
+  #endif
+
+  #ifdef RENDERER_ENABLE_VERTEXCOLOR
+    varyings.vertexColor = attributes.COLOR_0;
+  #endif
+
+
+  VertexInputs vertexInputs = getVertexInputs(attributes);
+
+  // positionWS
+  varyings.positionWS = vertexInputs.positionWS;
+
+  // positionVS
+  #if SCENE_FOG_MODE != 0
+	  varyings.positionVS = vertexInputs.positionVS;
+	#endif
+
+  // normalWS、tangentWS、bitangentWS
+  #ifdef RENDERER_HAS_NORMAL
+    varyings.normalWS = vertexInputs.normalWS;
+    #ifdef RENDERER_HAS_TANGENT
+      varyings.tangentWS = vertexInputs.tangentWS;
+      varyings.bitangentWS = vertexInputs.bitangentWS;
+    #endif
+  #endif
+
+  // ShadowCoord
+  #if defined(NEED_CALCULATE_SHADOWS) && (SCENE_SHADOW_CASCADED_COUNT == 1)
+      varyings.shadowCoord = getShadowCoord(vertexInputs.positionWS);
+  #endif
+
+  gl_Position = renderer_MVPMat * vertexInputs.positionOS;
+
+  return varyings;
+}
+
+
+void PBRFragment(Varyings varyings) {
+  BRDFData brdfData;
+
+
+  // Get aoUV
+  vec2 aoUV = varyings.uv;
+  #if defined(MATERIAL_HAS_OCCLUSION_TEXTURE) && defined(RENDERER_HAS_UV1)
+    if(material_OcclusionTextureCoord == 1.0){
+        aoUV = varyings.uv1;
+    }
+  #endif
+
+  SurfaceData surfaceData = getSurfaceData(varyings, aoUV, gl_FrontFacing);
+
+  #ifdef RENDERER_HAS_TANGENT
+   mat3 tbn = mat3(surfaceData.tangent, surfaceData.bitangent, surfaceData.normal);
+  #endif
+
+  // Modify surfaceData by eye algorithm
+  surfaceData.albedoColor = calculateEyeColor(varyings.uv, tbn);
+  surfaceData.normal =calculateEyeNormal(varyings.uv, tbn, gl_FrontFacing);
+  surfaceData.f0 = 0.04; 
+
+  // Can modify surfaceData here
+  initBRDFData(surfaceData, brdfData);
+
+  vec4 color = vec4(0, 0, 0, surfaceData.opacity);
+
+  // Get shadow attenuation
+  float shadowAttenuation = 1.0;
+  #if defined(SCENE_DIRECT_LIGHT_COUNT) && defined(NEED_CALCULATE_SHADOWS)
+    #if SCENE_SHADOW_CASCADED_COUNT == 1
+      vec3 shadowCoord = varyings.shadowCoord;
+    #else
+      vec3 shadowCoord = getShadowCoord(varyings.positionWS);
+    #endif
+    shadowAttenuation *= sampleShadowMap(varyings.positionWS, shadowCoord);
+  #endif
+
+  // Evaluate direct lighting
+  evaluateDirectRadiance(varyings, surfaceData, brdfData, shadowAttenuation, color.rgb);
+
+  // IBL
+  evaluateIBL(varyings, surfaceData, brdfData, color.rgb);
+
+  // Emissive
+  color.rgb += surfaceData.emissiveColor;
+
+
+  #if SCENE_FOG_MODE != 0
+      color = fog(color, varyings.positionVS);
+  #endif
+
+  #ifndef ENGINE_IS_COLORSPACE_GAMMA
+      color = linearToGamma(color);
+  #endif
+
+  gl_FragColor = color;
+}
+
+#endif

packages/custom-material/src/advanced-shader/eye/EyeFunction.glsl

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+float material_ScleraSize;
+float material_IrisSize;
+vec2 material_PupilSize;
+float material_Limbal;
+float material_Parallax;
+float material_ScleraNormalStrength;
+float material_IrisNormalStrength;
+vec4 material_ScleraColor;
+vec4 material_IrisColor;
+
+#ifdef MATERIAL_HAS_SCLERA_NORMAL
+ sampler2D material_ScleraNormal;
+#endif
+
+#ifdef MATERIAL_HAS_SCLERA_TEXTURE
+ sampler2D material_ScleraTexture;
+#endif
+
+#ifdef MATERIAL_HAS_SCLERA_MASK
+ sampler2D material_ScleraMask;
+#endif
+
+#ifdef MATERIAL_HAS_IRIS_TEXTURE
+ sampler2D material_IrisTexture;
+#endif
+
+#ifdef MATERIAL_HAS_IRIS_NORMAL
+ sampler2D material_IrisNormal;
+#endif
+
+vec2 parallaxOffset( float heighttex, float height, vec3 viewDir )
+   {
+     float heightTex = heighttex * height- height/2.0;
+     vec3 s = viewDir;
+     s.z -= 0.42;
+     s.y -= s.y;
+     return  heightTex * (s.xy / s.z);
+   }
+
+vec3 calculateEyeColor(Varyings varyings, mat3 tbn)
+{
+  // Sclera UV
+  vec2 scleraUV = (varyings.uv * material_ScleraSize)-((material_ScleraSize-1.0)/2.0);
+
+  // Sclera Texture
+  #ifdef MATERIAL_HAS_SCLERA_TEXTURE  
+   vec4 scleraColor = texture2D(material_ScleraTexture, scleraUV);
+   scleraColor *= material_ScleraColor;
+  #ifndef ENGINE_IS_COLORSPACE_GAMMA
+   scleraColor = gammaToLinear(scleraColor);
+  #endif
+  #else
+   vec4 scleraColor = vec4(1.0);
+  #endif
+
+  // Iris Size For Mask
+  vec2 irisSizeUV = (varyings.uv  * material_IrisSize) - ((material_IrisSize-1.0)/2.0);
+  float irisSize  = material_IrisSize * 0.6;
+
+  // Pupil Size
+  vec2 pupilSize = mix(vec2(mix(0.5,0.2,irisSize/5.0)),vec2(mix(1.2,0.75,irisSize/5.0)),material_PupilSize.xy);
+
+  // Parallax UV
+  vec2 parallaxUV = mix((varyings.uv * 0.75)-((0.75-1.0)/2.0) ,(varyings.uv  * pupilSize)-((pupilSize-1.0)/2.0),varyings.uv );
+
+  // Get Mask
+  float heighttexture = 0.0;
+  #ifdef MATERIAL_HAS_SCLERA_MASK
+   vec3 irisMaskTex = (texture2D(material_ScleraMask, irisSizeUV)).rgb;
+   float uvmask = 1.0 - (texture2D(material_ScleraMask, varyings.uv )).b;
+   heighttexture = 1.0 - (texture2D(material_ScleraMask, parallaxUV)).b;
+  #else
+   vec3 irisMaskTex = vec3(1.0);
+   float uvmask = 1.0;
+   heighttexture = 1.0;
+  #endif
+
+  // Transform ViewdirWS To ViewdirTS
+  vec3 vDir = normalize(camera_Position - varyings.positionWS); 
+  vec3 viewDirInTBN = tbn * vDir;
+
+  vec2 offset = parallaxOffset(heighttexture, material_Parallax, viewDirInTBN);
+
+  // Iris UV And Pupil UV
+  vec2 irisUV = (varyings.uv  * irisSize) - ((irisSize-1.0)/2.0);
+  vec2 pupilUV = irisUV * ((-1.0 + (uvmask * pupilSize)))-( 0.5 *(uvmask * pupilSize)); 
+
+  // Parallax Color
+  vec4 parallax = vec4(0.0);
+  #ifdef MATERIAL_HAS_IRIS_TEXTURE
+   parallax = texture2D(material_IrisTexture, pupilUV - offset);
+  #ifndef ENGINE_IS_COLORSPACE_GAMMA
+   parallax = gammaToLinear(parallax);
+  #endif
+   parallax.rgb *= material_IrisColor.rgb;
+  #endif
+
+  vec4 baseColor = mix(scleraColor,parallax,irisMaskTex.r);
+
+   // Limbus
+  vec4 limbalstrength = (0.0 - (material_Limbal * 10.0 )) * baseColor;
+  float limbalRadius = saturate(irisMaskTex.g * (1.0 - irisMaskTex.r));
+  baseColor = mix(baseColor,limbalstrength,limbalRadius);
+  return baseColor.rgb;
+}
+
+vec3 calculateEyeNormal(Varyings varyings, mat3 tbn, bool isFrontFacing)
+{
+  // Sclera UV
+  vec2 scleraUV = (varyings.uv * material_ScleraSize)-((material_ScleraSize-1.0)/2.0);
+  // Iris UV
+  vec2 irisSizeUV = (varyings.uv  * material_IrisSize) - ((material_IrisSize-1.0)/2.0);
+
+  #ifdef MATERIAL_HAS_SCLERA_MASK
+   vec3 irisMaskTex = (texture2D(material_ScleraMask, irisSizeUV)).rgb;
+  #else
+   vec3 irisMaskTex = vec3(1.0);
+  #endif
+
+  // Normal
+  #ifdef MATERIAL_HAS_SCLERA_NORMAL
+   vec3 scleraNormal = getNormalByNormalTexture(tbn, material_ScleraNormal, material_ScleraNormalStrength, scleraUV, isFrontFacing);
+  #else
+   vec3 scleraNormal = tbn[2];
+  #endif
+
+  #ifdef MATERIAL_HAS_IRIS_NORMAL
+   vec3 irisNormal = getNormalByNormalTexture(tbn, material_IrisNormal, material_IrisNormalStrength, irisSizeUV, isFrontFacing);
+  #else
+   vec3 irisNormal =  tbn[2];
+  #endif
+  return mix(scleraNormal,irisNormal,irisMaskTex.r);
+}

packages/custom-material/src/advanced-shader/hair/Hair.gs

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+Shader "hair/hair.gs" {
+  EditorProperties {
+    Header("Base"){
+      material_IOR("IOR", Range(0, 5, 0.01)) = 1.5;
+      material_BaseColor("BaseColor", Color) = (1, 1, 1, 1);
+      material_BaseTexture("BaseTexture", Texture2D);
+    }
+
+    Header("Metal Roughness") {
+      material_Metal( "Metal", Range(0,1,0.01) ) = 1;
+      material_Roughness( "Roughness", Range( 0, 1, 0.01 ) ) = 1;
+      material_RoughnessMetallicTexture("RoughnessMetallicTexture", Texture2D);
+    }
+
+    Header("HairAnisotropy") {
+      material_HairFirstWidth("HairFirstWidth", Range(0, 15, 0.01)) = 15;
+      material_HairSecondWidth("HairSecondWidth", Range(0, 15, 0.01)) = 15;
+      material_HairFirstStrength("HairsFirstrength", Range(0, 5, 0.01)) = 1;
+      material_HairSecondStrength("HairsSecondstrength", Range(0, 5, 0.01)) = 0.5;
+      material_HairFirstOffset("HairFirstOffest", Range(-1, 5, 0.01)) = 0.2;
+      material_HairSecondOffset("HairSecondOffest", Range(-1, 5, 0.01)) = 0.2;
+      material_HairFirstColor("HairFirstColor", Color) = (1,1,1,1);
+      material_HairSecondColor("HairSecondColor", Color) = (1,1,1,1);
+      material_HairAnisotropyTexture("HairAnisotropyTexture", Texture2D);
+    }
+
+    Header("Normal") {
+      material_NormalTexture("NormalTexture", Texture2D);
+      material_NormalIntensity("NormalIntensity", Range(0, 5, 0.01)) = 1;
+    }
+
+    Header("Emissive") {
+      material_EmissiveColor("EmissiveColor", Color ) = (0, 0, 0, 1);
+      material_EmissiveTexture("EmissiveTexture", Texture2D);
+    }
+
+    Header("Occlusion") {
+      material_OcclusionTexture("OcclusionTexture", Texture2D);
+      material_OcclusionIntensity("OcclusionIntensity", Range(0, 5, 0.01)) = 1;
+      material_OcclusionTextureCoord("OcclusionTextureCoord", Float) = 0;
+    }
+
+    Header("Common") {
+      material_AlphaCutoff( "AlphaCutoff", Range(0, 1, 0.01) ) = 0;
+      material_TilingOffset("TilingOffset", Vector4) = (1, 1, 0, 0);
+    }
+  }
+
+  EditorMacros {
+    Header("Conditional Macors") {
+      MATERIAL_HAS_BASETEXTURE("HAS_BASETEXTURE");
+      MATERIAL_HAS_ROUGHNESS_METALLIC_TEXTURE("HAS_ROUGHNESS_METALLIC_TEXTURE");
+      MATERIAL_HAS_HAIRANISOTROPY_TEXTURE("HAIRANISOTROPY");
+      MATERIAL_HAS_NORMALTEXTURE("HAS_NORMALTEXTURE");
+      MATERIAL_HAS_EMISSIVETEXTURE("HAS_EMISSIVETEXTURE");
+      MATERIAL_HAS_OCCLUSION_TEXTURE("HAS_OCCLUSION_TEXTURE");
+      MATERIAL_IS_TRANSPARENT("IS_TRANSPARENT");
+      MATERIAL_IS_ALPHA_CUTOFF("IS_ALPHA_CUTOFF");
+    }
+  }
+
+  SubShader "Default" {
+
+    UsePass "pbr/Default/ShadowCaster"
+
+    Pass "Forward Pass" {
+      Tags { pipelineStage = "Forward"} 
+
+      #define IS_METALLIC_WORKFLOW
+
+      VertexShader = PBRVertex;
+      FragmentShader = PBRFragment;
+
+      #include "./HairForwardPass.glsl"
+
+    }
+  }
+}