From 98d720b35c908bb858414a37e5d8e4d4e6a1edc8 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 12:28:10 -0300
Subject: [PATCH 1/8] add internal sss support

---
 src/materials/nodes/manager/NodeMaterialObserver.js | 2 +-
 src/nodes/lighting/AnalyticLightNode.js             | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/materials/nodes/manager/NodeMaterialObserver.js b/src/materials/nodes/manager/NodeMaterialObserver.js
index acd815d41a1618..3dc8c4af7aad7a 100644
--- a/src/materials/nodes/manager/NodeMaterialObserver.js
+++ b/src/materials/nodes/manager/NodeMaterialObserver.js
@@ -259,7 +259,7 @@ class NodeMaterialObserver {
 
 		}
 
-		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao )
+		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao || builder.context.sss )
 			return true;
 
 		return false;
diff --git a/src/nodes/lighting/AnalyticLightNode.js b/src/nodes/lighting/AnalyticLightNode.js
index 44e598d3755ecc..32fb7fc237f666 100644
--- a/src/nodes/lighting/AnalyticLightNode.js
+++ b/src/nodes/lighting/AnalyticLightNode.js
@@ -188,6 +188,12 @@ class AnalyticLightNode extends LightingNode {
 
 		//
 
+		if ( builder.context.sss ) {
+
+			shadowColorNode = shadowColorNode.mul( builder.context.sss );
+
+		}
+
 		this.colorNode = shadowColorNode;
 
 	}

From f6daf1a25eab1075a743720f447475f683115937 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 12:31:04 -0300
Subject: [PATCH 2/8] Update webgpu_postprocessing_sss.html

---
 examples/webgpu_postprocessing_sss.html | 55 ++++++++++++++++---------
 1 file changed, 35 insertions(+), 20 deletions(-)

diff --git a/examples/webgpu_postprocessing_sss.html b/examples/webgpu_postprocessing_sss.html
index 97a8e490f51fb2..a51f9f8e8555d9 100644
--- a/examples/webgpu_postprocessing_sss.html
+++ b/examples/webgpu_postprocessing_sss.html
@@ -36,7 +36,7 @@
 		<script type="module">
 
 			import * as THREE from 'three/webgpu';
-			import { pass, vec3, vec4, mrt, output, velocity } from 'three/tsl';
+			import { pass, vec3, vec4, mrt, screenUV, velocity, context } from 'three/tsl';
 			import { sss } from 'three/addons/tsl/display/SSSNode.js';
 			import { traa } from 'three/addons/tsl/display/TRAANode.js';
 
@@ -128,33 +128,50 @@
 				renderer.inspector = new Inspector();
 				document.body.appendChild( renderer.domElement );
 
+				// post-processing
+
 				postProcessing = new THREE.PostProcessing( renderer );
 
-				const scenePass = pass( scene, camera );
-				scenePass.setMRT( mrt( {
-					output: output,
-					velocity: velocity
+				// pre-pass
+
+				const prePass = pass( scene, camera );
+				prePass.name = 'Pre-Pass';
+				prePass.transparent = false;
+
+				prePass.setMRT( mrt( {
+					output: velocity
 				} ) );
 
-				const scenePassColor = scenePass.getTextureNode( 'output' );
-				const scenePassVelocity = scenePass.getTextureNode( 'velocity' );
-				const scenePassDepth = scenePass.getTextureNode( 'depth' );
+				const prePassDepth = prePass.getTextureNode( 'depth' ).toInspector( 'Depth', () => prePass.getLinearDepthNode() );
+				const prePassVelocity = prePass.getTextureNode( 'output' ).toInspector( 'Velocity' );
+
+				// pre-pass - bandwidth optimization
+
+				const normalTexture = prePass.getTexture( 'output' );
+				normalTexture.type = THREE.UnsignedByteType;
+
+				// scene pass
+
+				const scenePass = pass( scene, camera ).toInspector( 'Color' );
 
 				// sss
 
-				const sssPass = sss( scenePassDepth, camera, dirLight );
-				sssPass.shadowIntensity.value = 0.3;
+				const sssPass = sss( prePassDepth, camera, dirLight );
+				sssPass.shadowIntensity.value = 1;
 				sssPass.maxDistance.value = 0.2;
 				sssPass.useTemporalFiltering = true;
 
-				// composite
+				// scene context
+
+				const sssContext = context( {
+					sss: sssPass.getTextureNode().sample( screenUV ).r
+				} );
+
+				scenePass.contextNode = sssContext;
 
-				const compositePass = vec4( scenePassColor.rgb.mul( sssPass.r ), scenePassColor.a );
-				compositePass.name = 'Composite';
-			
 				// traa
 
-				const traaPass = traa( compositePass, scenePassDepth, scenePassVelocity, camera );
+				const traaPass = traa( scenePass, prePassDepth, prePassVelocity, camera );
 				postProcessing.outputNode = traaPass;
 
 				//
@@ -184,17 +201,15 @@
 
 				function updatePostprocessing() {
 
-					if ( params.output === 1 ) {
-
-						postProcessing.outputNode = scenePassColor;
+					scenePass.contextNode = params.output !== 1 ? sssContext : null;
 
-					} else if ( params.output === 2 ) {
+					if ( params.output === 2 ) {
 
 						postProcessing.outputNode = vec4( vec3( sssPass.r ), 1 );
 
 					} else {
 
-						postProcessing.outputNode = sssPass.useTemporalFiltering ? traaPass : compositePass;
+						postProcessing.outputNode = sssPass.useTemporalFiltering ? traaPass : scenePass;
 
 					}
 

From c27b5daede46413072d9de4feee3eec1e5f6ae91 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 12:58:56 -0300
Subject: [PATCH 3/8] add selective sss

---
 examples/webgpu_postprocessing_sss.html             | 12 +++++++++++-
 src/materials/nodes/manager/NodeMaterialObserver.js |  2 +-
 src/nodes/lighting/AnalyticLightNode.js             | 10 ++++++++--
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/examples/webgpu_postprocessing_sss.html b/examples/webgpu_postprocessing_sss.html
index a51f9f8e8555d9..aec5052fcb98fe 100644
--- a/examples/webgpu_postprocessing_sss.html
+++ b/examples/webgpu_postprocessing_sss.html
@@ -163,8 +163,18 @@
 
 				// scene context
 
+				const sssSample = sssPass.getTextureNode().sample( screenUV ).r;
+
 				const sssContext = context( {
-					sss: sssPass.getTextureNode().sample( screenUV ).r
+
+					getSSS: ( light ) => {
+
+						if ( light === dirLight ) return sssSample;
+
+						return null;
+
+					}
+
 				} );
 
 				scenePass.contextNode = sssContext;
diff --git a/src/materials/nodes/manager/NodeMaterialObserver.js b/src/materials/nodes/manager/NodeMaterialObserver.js
index 3dc8c4af7aad7a..1fadb07dbf7d28 100644
--- a/src/materials/nodes/manager/NodeMaterialObserver.js
+++ b/src/materials/nodes/manager/NodeMaterialObserver.js
@@ -259,7 +259,7 @@ class NodeMaterialObserver {
 
 		}
 
-		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao || builder.context.sss )
+		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao || builder.context.getSSS )
 			return true;
 
 		return false;
diff --git a/src/nodes/lighting/AnalyticLightNode.js b/src/nodes/lighting/AnalyticLightNode.js
index 32fb7fc237f666..4e0cc0160d38c7 100644
--- a/src/nodes/lighting/AnalyticLightNode.js
+++ b/src/nodes/lighting/AnalyticLightNode.js
@@ -188,9 +188,15 @@ class AnalyticLightNode extends LightingNode {
 
 		//
 
-		if ( builder.context.sss ) {
+		if ( builder.context.getSSS ) {
 
-			shadowColorNode = shadowColorNode.mul( builder.context.sss );
+			const sss = builder.context.getSSS( this.light, builder );
+
+			if ( sss ) {
+
+				shadowColorNode = shadowColorNode.mul( sss );
+
+			}
 
 		}
 

From cea08d32559b10773ae7cab8adb3d9b2d097af52 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 15:53:21 -0300
Subject: [PATCH 4/8] Update SSSNode.js

---
 examples/jsm/tsl/display/SSSNode.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/jsm/tsl/display/SSSNode.js b/examples/jsm/tsl/display/SSSNode.js
index 88185676c1f7e3..e7a999dd99f5cd 100644
--- a/examples/jsm/tsl/display/SSSNode.js
+++ b/examples/jsm/tsl/display/SSSNode.js
@@ -90,9 +90,9 @@ class SSSNode extends TempNode {
 		 * Shadow intensity. Must be in the range `[0, 1]`.
 		 *
 		 * @type {UniformNode<float>}
-		 * @default 0.5
+		 * @default 1.0
 		 */
-		this.shadowIntensity = uniform( 0.5, 'float' );
+		this.shadowIntensity = uniform( 1.0, 'float' );
 
 		/**
 		 * This parameter controls how detailed the raymarching process works.

From 5f1b88143e164d962b80f6f1ee10ec8675dd5093 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 15:55:28 -0300
Subject: [PATCH 5/8] Update webgpu_postprocessing_sss.html

---
 examples/webgpu_postprocessing_sss.html | 1 -
 1 file changed, 1 deletion(-)

diff --git a/examples/webgpu_postprocessing_sss.html b/examples/webgpu_postprocessing_sss.html
index aec5052fcb98fe..bda17f16bdc40f 100644
--- a/examples/webgpu_postprocessing_sss.html
+++ b/examples/webgpu_postprocessing_sss.html
@@ -157,7 +157,6 @@
 				// sss
 
 				const sssPass = sss( prePassDepth, camera, dirLight );
-				sssPass.shadowIntensity.value = 1;
 				sssPass.maxDistance.value = 0.2;
 				sssPass.useTemporalFiltering = true;
 

From 8750224852a7fd65a535d983df631b9fdc69531a Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 16:00:22 -0300
Subject: [PATCH 6/8] Update webgpu_postprocessing_sss.html

---
 examples/webgpu_postprocessing_sss.html | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/examples/webgpu_postprocessing_sss.html b/examples/webgpu_postprocessing_sss.html
index bda17f16bdc40f..4442c4a9609b60 100644
--- a/examples/webgpu_postprocessing_sss.html
+++ b/examples/webgpu_postprocessing_sss.html
@@ -145,11 +145,6 @@
 				const prePassDepth = prePass.getTextureNode( 'depth' ).toInspector( 'Depth', () => prePass.getLinearDepthNode() );
 				const prePassVelocity = prePass.getTextureNode( 'output' ).toInspector( 'Velocity' );
 
-				// pre-pass - bandwidth optimization
-
-				const normalTexture = prePass.getTexture( 'output' );
-				normalTexture.type = THREE.UnsignedByteType;
-
 				// scene pass
 
 				const scenePass = pass( scene, camera ).toInspector( 'Color' );

From e68371048124cd7b6f273dc74fd67d96d3c8b6a5 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 16:02:52 -0300
Subject: [PATCH 7/8] Rename `getSSS` context to `getShadow`

---
 src/materials/nodes/manager/NodeMaterialObserver.js | 2 +-
 src/nodes/lighting/AnalyticLightNode.js             | 8 ++++----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/materials/nodes/manager/NodeMaterialObserver.js b/src/materials/nodes/manager/NodeMaterialObserver.js
index 1fadb07dbf7d28..a6809e2894de0d 100644
--- a/src/materials/nodes/manager/NodeMaterialObserver.js
+++ b/src/materials/nodes/manager/NodeMaterialObserver.js
@@ -259,7 +259,7 @@ class NodeMaterialObserver {
 
 		}
 
-		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao || builder.context.getSSS )
+		if ( builder.context.modelViewMatrix || builder.context.modelNormalViewMatrix || builder.context.ao || builder.context.getShadow )
 			return true;
 
 		return false;
diff --git a/src/nodes/lighting/AnalyticLightNode.js b/src/nodes/lighting/AnalyticLightNode.js
index 4e0cc0160d38c7..4a7a21f3b386e1 100644
--- a/src/nodes/lighting/AnalyticLightNode.js
+++ b/src/nodes/lighting/AnalyticLightNode.js
@@ -188,13 +188,13 @@ class AnalyticLightNode extends LightingNode {
 
 		//
 
-		if ( builder.context.getSSS ) {
+		if ( builder.context.getShadow ) {
 
-			const sss = builder.context.getSSS( this.light, builder );
+			const shadow = builder.context.getShadow( this.light, builder );
 
-			if ( sss ) {
+			if ( shadow ) {
 
-				shadowColorNode = shadowColorNode.mul( sss );
+				shadowColorNode = shadowColorNode.mul( shadow );
 
 			}
 

From beded1e1cb13986b432fde878bba4880c7104fe8 Mon Sep 17 00:00:00 2001
From: sunag <sunagbrasil@gmail.com>
Date: Mon, 24 Nov 2025 16:03:03 -0300
Subject: [PATCH 8/8] Update webgpu_postprocessing_sss.html

---
 examples/webgpu_postprocessing_sss.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/webgpu_postprocessing_sss.html b/examples/webgpu_postprocessing_sss.html
index 4442c4a9609b60..48a328bfe0532a 100644
--- a/examples/webgpu_postprocessing_sss.html
+++ b/examples/webgpu_postprocessing_sss.html
@@ -161,7 +161,7 @@
 
 				const sssContext = context( {
 
-					getSSS: ( light ) => {
+					getShadow: ( light ) => {
 
 						if ( light === dirLight ) return sssSample;