diff --git a/build/litegraph.js b/build/litegraph.js
index 19d1a72ac..083569e56 100644
--- a/build/litegraph.js
+++ b/build/litegraph.js
@@ -322,6 +322,7 @@ LGraph.prototype.clear = function()
 	//nodes
 	this._nodes = [];
 	this._nodes_by_id = {};
+	this._nodes_in_order = null; //nodes that are executable sorted in execution order
 
 	//links
 	this.last_link_id = 0;
@@ -398,7 +399,8 @@ LGraph.prototype.detachCanvas = function(graphcanvas)
 
 LGraph.prototype.start = function(interval)
 {
-	if(this.status == LGraph.STATUS_RUNNING) return;
+	if( this.status == LGraph.STATUS_RUNNING )
+		return;
 	this.status = LGraph.STATUS_RUNNING;
 
 	if(this.onPlayEvent)
@@ -424,7 +426,7 @@ LGraph.prototype.start = function(interval)
 
 LGraph.prototype.stop = function()
 {
-	if(this.status == LGraph.STATUS_STOPPED)
+	if( this.status == LGraph.STATUS_STOPPED )
 		return;
 
 	this.status = LGraph.STATUS_STOPPED;
@@ -500,14 +502,13 @@ LGraph.prototype.runStep = function(num)
 * nodes with only inputs.
 * @method updateExecutionOrder
 */
-	
 LGraph.prototype.updateExecutionOrder = function()
 {
-	this._nodes_in_order = this.computeExecutionOrder();
+	this._nodes_in_order = this.computeExecutionOrder( true );
 }
 
 //This is more internal, it computes the order and returns it
-LGraph.prototype.computeExecutionOrder = function()
+LGraph.prototype.computeExecutionOrder = function( only_onExecute )
 {
 	var L = [];
 	var S = [];
@@ -519,6 +520,9 @@ LGraph.prototype.computeExecutionOrder = function()
 	for (var i = 0, l = this._nodes.length; i < l; ++i)
 	{
 		var n = this._nodes[i];
+		if( only_onExecute && !n.onExecute )
+			continue;
+
 		M[n.id] = n; //add to pending nodes
 
 		var num = 0; //num of input connections
@@ -791,13 +795,14 @@ LGraph.prototype.remove = function(node)
 /**
 * Returns a node by its id.
 * @method getNodeById
-* @param {String} id
+* @param {Number} id
 */
 
-LGraph.prototype.getNodeById = function(id)
+LGraph.prototype.getNodeById = function( id )
 {
-	if(id==null) return null;
-	return this._nodes_by_id[id];
+	if( id == null )
+		return null;
+	return this._nodes_by_id[ id ];
 }
 
 /**
@@ -1661,16 +1666,20 @@ LGraphNode.prototype.isOutputConnected = function(slot)
 */
 LGraphNode.prototype.getOutputNodes = function(slot)
 {
-	if(!this.outputs || this.outputs.length == 0) return null;
-	if(slot < this.outputs.length)
-	{
-		var output = this.outputs[slot];
-		var r = [];
-		for(var i = 0; i < output.length; i++)
-			r.push( this.graph.getNodeById( output.links[i].target_id ));
-		return r;
-	}
-	return null;
+	if(!this.outputs || this.outputs.length == 0)
+		return null;
+
+	if(slot >= this.outputs.length)
+		return null;
+
+	var output = this.outputs[slot];
+	if(!output.links || output.links.length == 0)
+		return null;
+
+	var r = [];
+	for(var i = 0; i < output.links.length; i++)
+		r.push( this.graph.getNodeById( output.links[i] ));
+	return r;
 }
 
 /**
@@ -4765,6 +4774,11 @@ LGraphCanvas.showMenuNodeInputs = function(node, e, prev_menu)
 		for (var i in options)
 		{
 			var entry = options[i];
+			if(!entry)
+			{
+				entries.push(null);
+				continue;
+			}
 			var label = entry[0];
 			if(entry[2] && entry[2].label)
 				label = entry[2].label;
@@ -10530,9 +10544,6 @@ if(typeof(LiteGraph) != "undefined")
 		this.addInput("Range","number");
 		this.addOutput("Texture","Texture");
 		this.properties = { distance:100, range: 50, high_precision: false };
-
-		if(!LGraphTextureDepthRange._shader)
-			LGraphTextureDepthRange._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureDepthRange.pixel_shader );
 	}
 
 	LGraphTextureDepthRange.title = "Depth Range";
@@ -10572,6 +10583,8 @@ if(typeof(LiteGraph) != "undefined")
 		gl.disable( gl.BLEND );
 		gl.disable( gl.DEPTH_TEST );
 		var mesh = Mesh.getScreenQuad();
+		if(!LGraphTextureDepthRange._shader)
+			LGraphTextureDepthRange._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureDepthRange.pixel_shader );
 		var shader = LGraphTextureDepthRange._shader;
 
 		//TODO: this asumes we have LiteScene, change it
@@ -10621,9 +10634,6 @@ if(typeof(LiteGraph) != "undefined")
 		this.addInput("Intensity","number");
 		this.addOutput("Blurred","Texture");
 		this.properties = { intensity: 1, iterations: 1, preserve_aspect: false, scale:[1,1] };
-
-		if(!LGraphTextureBlur._shader)
-			LGraphTextureBlur._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureBlur.pixel_shader );
 	}
 
 	LGraphTextureBlur.title = "Blur";
@@ -10715,6 +10725,169 @@ if(typeof(LiteGraph) != "undefined")
 
 	LiteGraph.registerNodeType("texture/blur", LGraphTextureBlur );
 
+	// Texture Blur *****************************************
+	function LGraphTextureKuwaharaFilter()
+	{
+		this.addInput("Texture","Texture");
+		this.addOutput("Filtered","Texture");
+		this.properties = { intensity: 1, radius: 5 };
+	}
+
+	LGraphTextureKuwaharaFilter.title = "Kuwahara Filter";
+	LGraphTextureKuwaharaFilter.desc = "Filters a texture giving an artistic oil canvas painting";
+
+	LGraphTextureKuwaharaFilter.max_radius = 10;
+	LGraphTextureKuwaharaFilter._shaders = [];
+
+	LGraphTextureKuwaharaFilter.prototype.onExecute = function()
+	{
+		var tex = this.getInputData(0);
+		if(!tex)
+			return;
+
+		if(!this.isOutputConnected(0))
+			return; //saves work
+
+		var temp = this._temp_texture;
+
+		if(!temp || temp.width != tex.width || temp.height != tex.height || temp.type != tex.type )
+		{
+			//we need two textures to do the blurring
+			this._temp_texture = new GL.Texture( tex.width, tex.height, { type: tex.type, format: gl.RGBA, filter: gl.LINEAR });
+			//this._final_texture = new GL.Texture( tex.width, tex.height, { type: tex.type, format: gl.RGBA, filter: gl.LINEAR });
+		}
+
+		//iterations
+		var radius = this.properties.radius;
+		radius = Math.min( Math.floor(radius), LGraphTextureKuwaharaFilter.max_radius );
+		if(radius == 0) //skip blurring
+		{
+			this.setOutputData(0, tex);
+			return;
+		}
+
+		var intensity = this.properties.intensity;
+
+		//blur sometimes needs an aspect correction
+		var aspect = LiteGraph.camera_aspect;
+		if(!aspect && window.gl !== undefined)
+			aspect = gl.canvas.height / gl.canvas.width;
+		if(!aspect)
+			aspect = 1;
+		aspect = this.properties.preserve_aspect ? aspect : 1;
+
+		if(!LGraphTextureKuwaharaFilter._shaders[ radius ])
+			LGraphTextureKuwaharaFilter._shaders[ radius ] = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureKuwaharaFilter.pixel_shader, { RADIUS: radius.toFixed(0) });
+
+		var shader = LGraphTextureKuwaharaFilter._shaders[ radius ];
+		var mesh = GL.Mesh.getScreenQuad();
+		tex.bind(0);
+
+		this._temp_texture.drawTo( function() {
+			shader.uniforms({ u_texture: 0, u_intensity: intensity, u_resolution: [tex.width, tex.height], u_iResolution: [1/tex.width,1/tex.height]}).draw(mesh);
+		});
+
+		this.setOutputData(0, this._temp_texture);
+	}
+
+//from https://www.shadertoy.com/view/MsXSz4
+LGraphTextureKuwaharaFilter.pixel_shader = "\n\
+	precision highp float;\n\
+	varying vec2 v_coord;\n\
+	uniform sampler2D u_texture;\n\
+	uniform float u_intensity;\n\
+	uniform vec2 u_resolution;\n\
+	uniform vec2 u_iResolution;\n\
+	#ifndef RADIUS\n\
+		#define RADIUS 7\n\
+	#endif\n\
+	void main() {\n\
+	\n\
+		const int radius = RADIUS;\n\
+		vec2 fragCoord = v_coord;\n\
+		vec2 src_size = u_iResolution;\n\
+		vec2 uv = v_coord;\n\
+		float n = float((radius + 1) * (radius + 1));\n\
+		int i;\n\
+		int j;\n\
+		vec3 m0 = vec3(0.0); vec3 m1 = vec3(0.0); vec3 m2 = vec3(0.0); vec3 m3 = vec3(0.0);\n\
+		vec3 s0 = vec3(0.0); vec3 s1 = vec3(0.0); vec3 s2 = vec3(0.0); vec3 s3 = vec3(0.0);\n\
+		vec3 c;\n\
+		\n\
+		for (int j = -radius; j <= 0; ++j)  {\n\
+			for (int i = -radius; i <= 0; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m0 += c;\n\
+				s0 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = -radius; j <= 0; ++j)  {\n\
+			for (int i = 0; i <= radius; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m1 += c;\n\
+				s1 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = 0; j <= radius; ++j)  {\n\
+			for (int i = 0; i <= radius; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m2 += c;\n\
+				s2 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = 0; j <= radius; ++j)  {\n\
+			for (int i = -radius; i <= 0; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m3 += c;\n\
+				s3 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		float min_sigma2 = 1e+2;\n\
+		m0 /= n;\n\
+		s0 = abs(s0 / n - m0 * m0);\n\
+		\n\
+		float sigma2 = s0.r + s0.g + s0.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m0, 1.0);\n\
+		}\n\
+		\n\
+		m1 /= n;\n\
+		s1 = abs(s1 / n - m1 * m1);\n\
+		\n\
+		sigma2 = s1.r + s1.g + s1.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m1, 1.0);\n\
+		}\n\
+		\n\
+		m2 /= n;\n\
+		s2 = abs(s2 / n - m2 * m2);\n\
+		\n\
+		sigma2 = s2.r + s2.g + s2.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m2, 1.0);\n\
+		}\n\
+		\n\
+		m3 /= n;\n\
+		s3 = abs(s3 / n - m3 * m3);\n\
+		\n\
+		sigma2 = s3.r + s3.g + s3.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m3, 1.0);\n\
+		}\n\
+	}\n\
+	";
+
+	LiteGraph.registerNodeType("texture/kuwahara", LGraphTextureKuwaharaFilter );
+
+
 	// Texture Webcam *****************************************
 	function LGraphTextureWebcam()
 	{
diff --git a/src/litegraph.js b/src/litegraph.js
index 11c524dbd..d75a6737d 100755
--- a/src/litegraph.js
+++ b/src/litegraph.js
@@ -321,6 +321,7 @@ LGraph.prototype.clear = function()
 	//nodes
 	this._nodes = [];
 	this._nodes_by_id = {};
+	this._nodes_in_order = null; //nodes that are executable sorted in execution order
 
 	//links
 	this.last_link_id = 0;
@@ -397,7 +398,8 @@ LGraph.prototype.detachCanvas = function(graphcanvas)
 
 LGraph.prototype.start = function(interval)
 {
-	if(this.status == LGraph.STATUS_RUNNING) return;
+	if( this.status == LGraph.STATUS_RUNNING )
+		return;
 	this.status = LGraph.STATUS_RUNNING;
 
 	if(this.onPlayEvent)
@@ -423,7 +425,7 @@ LGraph.prototype.start = function(interval)
 
 LGraph.prototype.stop = function()
 {
-	if(this.status == LGraph.STATUS_STOPPED)
+	if( this.status == LGraph.STATUS_STOPPED )
 		return;
 
 	this.status = LGraph.STATUS_STOPPED;
@@ -499,14 +501,13 @@ LGraph.prototype.runStep = function(num)
 * nodes with only inputs.
 * @method updateExecutionOrder
 */
-	
 LGraph.prototype.updateExecutionOrder = function()
 {
-	this._nodes_in_order = this.computeExecutionOrder();
+	this._nodes_in_order = this.computeExecutionOrder( true );
 }
 
 //This is more internal, it computes the order and returns it
-LGraph.prototype.computeExecutionOrder = function()
+LGraph.prototype.computeExecutionOrder = function( only_onExecute )
 {
 	var L = [];
 	var S = [];
@@ -518,6 +519,9 @@ LGraph.prototype.computeExecutionOrder = function()
 	for (var i = 0, l = this._nodes.length; i < l; ++i)
 	{
 		var n = this._nodes[i];
+		if( only_onExecute && !n.onExecute )
+			continue;
+
 		M[n.id] = n; //add to pending nodes
 
 		var num = 0; //num of input connections
@@ -790,13 +794,14 @@ LGraph.prototype.remove = function(node)
 /**
 * Returns a node by its id.
 * @method getNodeById
-* @param {String} id
+* @param {Number} id
 */
 
-LGraph.prototype.getNodeById = function(id)
+LGraph.prototype.getNodeById = function( id )
 {
-	if(id==null) return null;
-	return this._nodes_by_id[id];
+	if( id == null )
+		return null;
+	return this._nodes_by_id[ id ];
 }
 
 /**
@@ -1660,16 +1665,20 @@ LGraphNode.prototype.isOutputConnected = function(slot)
 */
 LGraphNode.prototype.getOutputNodes = function(slot)
 {
-	if(!this.outputs || this.outputs.length == 0) return null;
-	if(slot < this.outputs.length)
-	{
-		var output = this.outputs[slot];
-		var r = [];
-		for(var i = 0; i < output.length; i++)
-			r.push( this.graph.getNodeById( output.links[i].target_id ));
-		return r;
-	}
-	return null;
+	if(!this.outputs || this.outputs.length == 0)
+		return null;
+
+	if(slot >= this.outputs.length)
+		return null;
+
+	var output = this.outputs[slot];
+	if(!output.links || output.links.length == 0)
+		return null;
+
+	var r = [];
+	for(var i = 0; i < output.links.length; i++)
+		r.push( this.graph.getNodeById( output.links[i] ));
+	return r;
 }
 
 /**
@@ -4764,6 +4773,11 @@ LGraphCanvas.showMenuNodeInputs = function(node, e, prev_menu)
 		for (var i in options)
 		{
 			var entry = options[i];
+			if(!entry)
+			{
+				entries.push(null);
+				continue;
+			}
 			var label = entry[0];
 			if(entry[2] && entry[2].label)
 				label = entry[2].label;
diff --git a/src/nodes/gltextures.js b/src/nodes/gltextures.js
index ebd92724a..e86103bb8 100755
--- a/src/nodes/gltextures.js
+++ b/src/nodes/gltextures.js
@@ -1645,9 +1645,6 @@ if(typeof(LiteGraph) != "undefined")
 		this.addInput("Range","number");
 		this.addOutput("Texture","Texture");
 		this.properties = { distance:100, range: 50, high_precision: false };
-
-		if(!LGraphTextureDepthRange._shader)
-			LGraphTextureDepthRange._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureDepthRange.pixel_shader );
 	}
 
 	LGraphTextureDepthRange.title = "Depth Range";
@@ -1687,6 +1684,8 @@ if(typeof(LiteGraph) != "undefined")
 		gl.disable( gl.BLEND );
 		gl.disable( gl.DEPTH_TEST );
 		var mesh = Mesh.getScreenQuad();
+		if(!LGraphTextureDepthRange._shader)
+			LGraphTextureDepthRange._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureDepthRange.pixel_shader );
 		var shader = LGraphTextureDepthRange._shader;
 
 		//TODO: this asumes we have LiteScene, change it
@@ -1736,9 +1735,6 @@ if(typeof(LiteGraph) != "undefined")
 		this.addInput("Intensity","number");
 		this.addOutput("Blurred","Texture");
 		this.properties = { intensity: 1, iterations: 1, preserve_aspect: false, scale:[1,1] };
-
-		if(!LGraphTextureBlur._shader)
-			LGraphTextureBlur._shader = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureBlur.pixel_shader );
 	}
 
 	LGraphTextureBlur.title = "Blur";
@@ -1830,6 +1826,169 @@ if(typeof(LiteGraph) != "undefined")
 
 	LiteGraph.registerNodeType("texture/blur", LGraphTextureBlur );
 
+	// Texture Blur *****************************************
+	function LGraphTextureKuwaharaFilter()
+	{
+		this.addInput("Texture","Texture");
+		this.addOutput("Filtered","Texture");
+		this.properties = { intensity: 1, radius: 5 };
+	}
+
+	LGraphTextureKuwaharaFilter.title = "Kuwahara Filter";
+	LGraphTextureKuwaharaFilter.desc = "Filters a texture giving an artistic oil canvas painting";
+
+	LGraphTextureKuwaharaFilter.max_radius = 10;
+	LGraphTextureKuwaharaFilter._shaders = [];
+
+	LGraphTextureKuwaharaFilter.prototype.onExecute = function()
+	{
+		var tex = this.getInputData(0);
+		if(!tex)
+			return;
+
+		if(!this.isOutputConnected(0))
+			return; //saves work
+
+		var temp = this._temp_texture;
+
+		if(!temp || temp.width != tex.width || temp.height != tex.height || temp.type != tex.type )
+		{
+			//we need two textures to do the blurring
+			this._temp_texture = new GL.Texture( tex.width, tex.height, { type: tex.type, format: gl.RGBA, filter: gl.LINEAR });
+			//this._final_texture = new GL.Texture( tex.width, tex.height, { type: tex.type, format: gl.RGBA, filter: gl.LINEAR });
+		}
+
+		//iterations
+		var radius = this.properties.radius;
+		radius = Math.min( Math.floor(radius), LGraphTextureKuwaharaFilter.max_radius );
+		if(radius == 0) //skip blurring
+		{
+			this.setOutputData(0, tex);
+			return;
+		}
+
+		var intensity = this.properties.intensity;
+
+		//blur sometimes needs an aspect correction
+		var aspect = LiteGraph.camera_aspect;
+		if(!aspect && window.gl !== undefined)
+			aspect = gl.canvas.height / gl.canvas.width;
+		if(!aspect)
+			aspect = 1;
+		aspect = this.properties.preserve_aspect ? aspect : 1;
+
+		if(!LGraphTextureKuwaharaFilter._shaders[ radius ])
+			LGraphTextureKuwaharaFilter._shaders[ radius ] = new GL.Shader( Shader.SCREEN_VERTEX_SHADER, LGraphTextureKuwaharaFilter.pixel_shader, { RADIUS: radius.toFixed(0) });
+
+		var shader = LGraphTextureKuwaharaFilter._shaders[ radius ];
+		var mesh = GL.Mesh.getScreenQuad();
+		tex.bind(0);
+
+		this._temp_texture.drawTo( function() {
+			shader.uniforms({ u_texture: 0, u_intensity: intensity, u_resolution: [tex.width, tex.height], u_iResolution: [1/tex.width,1/tex.height]}).draw(mesh);
+		});
+
+		this.setOutputData(0, this._temp_texture);
+	}
+
+//from https://www.shadertoy.com/view/MsXSz4
+LGraphTextureKuwaharaFilter.pixel_shader = "\n\
+	precision highp float;\n\
+	varying vec2 v_coord;\n\
+	uniform sampler2D u_texture;\n\
+	uniform float u_intensity;\n\
+	uniform vec2 u_resolution;\n\
+	uniform vec2 u_iResolution;\n\
+	#ifndef RADIUS\n\
+		#define RADIUS 7\n\
+	#endif\n\
+	void main() {\n\
+	\n\
+		const int radius = RADIUS;\n\
+		vec2 fragCoord = v_coord;\n\
+		vec2 src_size = u_iResolution;\n\
+		vec2 uv = v_coord;\n\
+		float n = float((radius + 1) * (radius + 1));\n\
+		int i;\n\
+		int j;\n\
+		vec3 m0 = vec3(0.0); vec3 m1 = vec3(0.0); vec3 m2 = vec3(0.0); vec3 m3 = vec3(0.0);\n\
+		vec3 s0 = vec3(0.0); vec3 s1 = vec3(0.0); vec3 s2 = vec3(0.0); vec3 s3 = vec3(0.0);\n\
+		vec3 c;\n\
+		\n\
+		for (int j = -radius; j <= 0; ++j)  {\n\
+			for (int i = -radius; i <= 0; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m0 += c;\n\
+				s0 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = -radius; j <= 0; ++j)  {\n\
+			for (int i = 0; i <= radius; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m1 += c;\n\
+				s1 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = 0; j <= radius; ++j)  {\n\
+			for (int i = 0; i <= radius; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m2 += c;\n\
+				s2 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		for (int j = 0; j <= radius; ++j)  {\n\
+			for (int i = -radius; i <= 0; ++i)  {\n\
+				c = texture2D(u_texture, uv + vec2(i,j) * src_size).rgb;\n\
+				m3 += c;\n\
+				s3 += c * c;\n\
+			}\n\
+		}\n\
+		\n\
+		float min_sigma2 = 1e+2;\n\
+		m0 /= n;\n\
+		s0 = abs(s0 / n - m0 * m0);\n\
+		\n\
+		float sigma2 = s0.r + s0.g + s0.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m0, 1.0);\n\
+		}\n\
+		\n\
+		m1 /= n;\n\
+		s1 = abs(s1 / n - m1 * m1);\n\
+		\n\
+		sigma2 = s1.r + s1.g + s1.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m1, 1.0);\n\
+		}\n\
+		\n\
+		m2 /= n;\n\
+		s2 = abs(s2 / n - m2 * m2);\n\
+		\n\
+		sigma2 = s2.r + s2.g + s2.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m2, 1.0);\n\
+		}\n\
+		\n\
+		m3 /= n;\n\
+		s3 = abs(s3 / n - m3 * m3);\n\
+		\n\
+		sigma2 = s3.r + s3.g + s3.b;\n\
+		if (sigma2 < min_sigma2) {\n\
+			min_sigma2 = sigma2;\n\
+			gl_FragColor = vec4(m3, 1.0);\n\
+		}\n\
+	}\n\
+	";
+
+	LiteGraph.registerNodeType("texture/kuwahara", LGraphTextureKuwaharaFilter );
+
+
 	// Texture Webcam *****************************************
 	function LGraphTextureWebcam()
 	{