Instanced_Intractive_GPGPU.html

<!DOCTYPE html>
<html lang="en">

	<head>
		<title>testing</title>
		<meta charset="utf-8">
		<meta name="viewport"
			content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">

		<style>
		body {
			background-color: #fff;
			color: #444;
			margin:0;
			padding:0;
			width: 100vw;
			height: 100vh;
			overflow: hidden;
		}

		a {
			color: #08f;
		}
	</style>
	</head>

	<body>

		<!--
		TODO: If you're reading this, you may wish to improve this example by
			- Create a better shading for the birds?

		-->

		<!-- shader for bird's position -->
		<script id="fragmentShaderPosition" type="x-shader/x-fragment">

			uniform float time;
			uniform float delta;

			void main()	{

				vec2 uv = gl_FragCoord.xy / resolution.xy;
				vec4 tmpPos = texture2D( texturePosition, uv );
				vec3 position = tmpPos.xyz;
				vec3 velocity = texture2D( textureVelocity, uv ).xyz;

				float phase = tmpPos.w;

				phase = mod( ( phase + delta +
					length( velocity.xz ) * delta * 3. +
					max( velocity.y, 0.0 ) * delta * 6. ), 62.83 );

				gl_FragColor = vec4( position + velocity * delta * 15. , phase );

			}

		</script>

		<!-- shader for bird's velocity -->
		<script id="fragmentShaderVelocity" type="x-shader/x-fragment">

			uniform float time;
			uniform float testing;
			uniform float delta; // about 0.016
			uniform float separationDistance; // 20
			uniform float alignmentDistance; // 40
			uniform float cohesionDistance; //
			uniform float freedomFactor;
			uniform vec3 predator;

			const float width = resolution.x;
			const float height = resolution.y;

			const float PI = 3.141592653589793;
			const float PI_2 = PI * 2.0;
			// const float VISION = PI * 0.55;

			float zoneRadius = 40.0;
			float zoneRadiusSquared = 1600.0;

			float separationThresh = 0.45;
			float alignmentThresh = 0.65;

			const float UPPER_BOUNDS = BOUNDS;
			const float LOWER_BOUNDS = -UPPER_BOUNDS;

			const float SPEED_LIMIT = 9.0;

			float rand( vec2 co ){
				return fract( sin( dot( co.xy, vec2(12.9898,78.233) ) ) * 43758.5453 );
			}

			mat4 rotation3d(vec3 axis, float angle) {
				axis = normalize(axis);
				float s = sin(angle);
				float c = cos(angle);
				float oc = 1.0 - c;
			  
				return mat4(
				  oc * axis.x * axis.x + c,           oc * axis.x * axis.y - axis.z * s,  oc * axis.z * axis.x + axis.y * s,  0.0,
				  oc * axis.x * axis.y + axis.z * s,  oc * axis.y * axis.y + c,           oc * axis.y * axis.z - axis.x * s,  0.0,
				  oc * axis.z * axis.x - axis.y * s,  oc * axis.y * axis.z + axis.x * s,  oc * axis.z * axis.z + c,           0.0,
				  0.0,                                0.0,                                0.0,                                1.0
				);
			  }
			  
			  
			void main() {

				zoneRadius = separationDistance + alignmentDistance + cohesionDistance;
				separationThresh = separationDistance / zoneRadius;
				alignmentThresh = ( separationDistance + alignmentDistance ) / zoneRadius;
				zoneRadiusSquared = zoneRadius * zoneRadius;


				vec2 uv = gl_FragCoord.xy / resolution.xy;
				vec3 birdPosition, birdVelocity;

				vec3 selfPosition = texture2D( texturePosition, uv ).xyz;
				vec3 selfVelocity = texture2D( textureVelocity, uv ).xyz;

				float dist;
				vec3 dir; // direction
				float distSquared;

				float separationSquared = separationDistance * separationDistance;
				float cohesionSquared = cohesionDistance * cohesionDistance;

				float f;
				float percent;

				vec3 velocity = selfVelocity;

				float limit = SPEED_LIMIT;

				dir = predator * UPPER_BOUNDS - selfPosition;
				dir.z = 0.;
				// dir.z *= 0.6;
				dist = length( dir );
				distSquared = dist * dist;

				float preyRadius = 100.0;
				float preyRadiusSq = preyRadius * preyRadius;


				// move birds away from predator
				if ( dist < preyRadius ) {

					f = ( distSquared / preyRadiusSq - 1.0 ) * delta * 200.;
					velocity += normalize( dir ) * f;
					limit += 15.0;
				} else {
				
				}


				// if (testing == 0.0) {}
				// if ( rand( uv + time ) < freedomFactor ) {}


				// Attract flocks to the center
				vec3 central = vec3( predator.x * UPPER_BOUNDS ,predator.y * UPPER_BOUNDS,  0. );
				dir = selfPosition - central;
				dist = length( dir );

				dir.y *= 0.5;

                float thisToCenter = 15.;
				velocity -= (normalize( dir ) * delta * thisToCenter) * 1.;

				for ( float y = 0.0; y < height; y++ ) {
					for ( float x = 0.0; x < width; x++ ) {

						vec2 ref = vec2( x + 0.5, y + 0.5 ) / resolution.xy;
						birdPosition = texture2D( texturePosition, ref ).xyz;

						dir = birdPosition - selfPosition;
						dist = length( dir );

						if ( dist < 0.0001 ) continue;

						distSquared = dist * dist  * dist;

						if ( distSquared > zoneRadiusSquared ) continue;

						percent = distSquared / zoneRadiusSquared;

						if ( percent < separationThresh ) { // low

							// Separation - Move apart for comfort
							f = ( separationThresh / percent - 1.0 ) * delta;
							velocity -= normalize( dir ) * f;

						} else if ( percent < alignmentThresh ) { // high

							// Alignment - fly the same direction
							float threshDelta = alignmentThresh - separationThresh;
							float adjustedPercent = ( percent - separationThresh ) / threshDelta;

							birdVelocity = texture2D( textureVelocity, ref ).xyz;

							f = ( 0.5 - cos( adjustedPercent * PI_2 ) * 0.5 + 0.5 ) * delta;
							velocity += normalize( birdVelocity ) * f;

						} else {

							// Attraction / Cohesion - move closer
							float threshDelta = 1.0 - alignmentThresh;
							float adjustedPercent;
							if( threshDelta == 0. ) adjustedPercent = 1.;
							else adjustedPercent = ( percent - alignmentThresh ) / threshDelta;

							f = ( 0.5 - ( cos( adjustedPercent * PI_2 )  * -0.5 + 0.5 ) ) * delta;

							velocity += normalize( dir ) / f;

						}

					}

				}
			

				// this make tends to fly around than down or up
				// if (velocity.y > 0.) velocity.y *= (1. - 0.2 * delta);

				// Speed Limits
				if ( length( velocity ) > limit ) {
					velocity = normalize( velocity ) * limit;
				}

				gl_FragColor = vec4( velocity, 1.0 );

			}

		</script>

		<script type="x-shader/x-vertex" id="birdVS">

			attribute vec2 reference;

			uniform sampler2D texturePosition;
			uniform sampler2D textureVelocity;

			varying vec4 vColor;
			varying float z;
			varying vec3 vNormal;
			varying vec3 vViewPosition;
			 
			uniform float time;

			void main() {

				vec4 tmpPos = texture2D( texturePosition, reference );
				vec3 pos = tmpPos.xyz;
				vec3 velocity = normalize(texture2D( textureVelocity, reference ).xyz);

				vec3 newPosition = position;

			//	if ( birdVertex == 4.0 || birdVertex == 7.0 ) {
			//		// flap wings
			//		newPosition.y = sin( tmpPos.w ) * 5.;
			//	}

				newPosition = mat3( modelMatrix ) * newPosition;


				velocity.z *= -1.;
				float xz = length( velocity.xz );
				float xyz = 1.;
				float x = sqrt( 1. - velocity.y * velocity.y );

				float cosry = velocity.x / xz;
				float sinry = velocity.z / xz;

				float cosrz = x / xyz;
				float sinrz = velocity.y / xyz;

				mat3 maty =  mat3(
					cosry, 0, -sinry,
					0    , 1, 0     ,
					sinry, 0, cosry

				);

				mat3 matz =  mat3(
					cosrz , sinrz, 0,
					-sinrz, cosrz, 0,
					0     , 0    , 1
				);

				newPosition =  maty * matz * newPosition;
				newPosition += pos;

				z = newPosition.z;

				vColor = vec4( vec3(1.,.6,.7), 1.0 );
				gl_Position = projectionMatrix *  viewMatrix  * vec4( newPosition, 1.0 );
				vNormal = normal;
				//vViewPosition =  newPosition;
			}

		</script>

		<!-- bird geometry shader -->
		<script type="x-shader/x-fragment" id="birdFS">

			varying vec4 vColor;
			varying float z;

			uniform vec3 color;

			void main() {
				// Fake colors for now
				float z2 = 0.2 + ( 1000. - z ) / 1000. * vColor.x;
				gl_FragColor = vec4( vec3(1.,.5,.5), 1. );

			}

		</script>

		<script type="importmap">
			{
				"imports": {
					"three": "./three.module.js",
					"three/addons/": "./jsm/"
				}
			}
		</script>

		<script type="module">

		import * as THREE from 'three';

		import Stats from 'three/addons/stats.module.js';
		import { GUI } from 'three/addons/lil-gui.module.min.js';
		import { OrbitControls } from 'three/addons/OrbitControls.js';

		import { GPUComputationRenderer } from 'three/addons/GPUComputationRenderer.js';
		import { InstancesMaterial, INSTANCE_POSITION, InstancesDepthMaterial } from './instances_material.js';
		/* TEXTURE WIDTH FOR SIMULATION */
		const WIDTH = 50;

		const BIRDS = WIDTH * WIDTH;

		// Custom Geometry - using 3 triangles each. No UVs, no normals currently.


		let container, stats;
		let camera, scene, renderer;
		let mouseX = 0, mouseY = 0;

		let windowHalfX = window.innerWidth / 2;
		let windowHalfY = window.innerHeight / 2;

		const BOUNDS = 800, BOUNDS_HALF = BOUNDS / 2;

		let last = performance.now();

		let gpuCompute;
		let velocityVariable;
		let positionVariable;
		let positionUniforms;
		let velocityUniforms;
		let birdUniforms;

		let monitorPos
		let monitorVel
		let meshDemo
		let materialShader
		let pointLightMNouse
		let groundMesh
		let materialInstanceCustom2
		let materialInstancecustomDepthMaterial
		let saverefence
		let mathh
		
		init();
		animate();

		function init() {

			container = document.createElement('div');
			document.body.appendChild(container);

			camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 3000);
			camera.position.z = 450;
			
			scene = new THREE.Scene();
			scene.background = new THREE.Color(0x00000);
			

			const axesHelper = new THREE.AxesHelper( window.innerHeight );
			//scene.add( axesHelper );


			const directionalLight = new THREE.DirectionalLight(0xffffff, Math.PI * 1)
			directionalLight.position.set( 0, window.innerHeight/2,  window.innerHeight/6 );
			directionalLight.castShadow = true
			directionalLight.shadow.mapSize.width = window.innerWidth
			directionalLight.shadow.mapSize.height =  window.innerHeight
			directionalLight.shadow.camera.near = 0.5
			directionalLight.shadow.camera.far = 1000
			directionalLight.shadow.camera.left = -1000
			directionalLight.shadow.camera.right = 1000
			directionalLight.shadow.camera.top = 1000
			directionalLight.shadow.camera.bottom = -1000
			scene.add(directionalLight);
			const helper = new THREE.DirectionalLightHelper( directionalLight, 20 );
//scene.add( helper );
			pointLightMNouse = new THREE.PointLight( 0xffffff, 1000000, 2000 );
			pointLightMNouse.position.set( 0, 0, 0 );
			//pointLightMNouse.castShadow = true; 
			scene.add( pointLightMNouse );


			renderer = new THREE.WebGLRenderer();
			renderer.setPixelRatio(window.devicePixelRatio);
			renderer.setSize(window.innerWidth, window.innerHeight);
			renderer.shadowMap.enabled = true

			renderer.shadowMap.type = THREE.PCFSoftShadowMap
			//renderer.shadowMap.type = THREE.VSMShadowMap

			container.appendChild(renderer.domElement);

			initComputeRenderer();

			stats = new Stats();
			container.appendChild(stats.dom);

			container.style.touchAction = 'none';
			container.addEventListener('pointermove', onPointerMove);

			//
			const controls = new OrbitControls( camera, renderer.domElement );
			// add monitor
			monitorPos = new THREE.Mesh(new THREE.PlaneGeometry(100, 100), new THREE.MeshBasicMaterial({ map: null }))
			scene.add(monitorPos)
			monitorVel = new THREE.Mesh(new THREE.PlaneGeometry(100, 100), new THREE.MeshBasicMaterial({ map: null }))
			monitorVel.position.x = -300
			monitorVel.position.y = 100
			monitorPos.position.x = -300
			monitorPos.position.y = -100
			scene.add(monitorVel)
			window.addEventListener('resize', onWindowResize);

			const gui = new GUI();


			const effectController = {
				separation: 1.0,
				alignment: 1.0,
				cohesion: 1.0,
				freedom: 0.75
			};

			const valuesChanger = function () {

				velocityUniforms['separationDistance'].value = effectController.separation;
				velocityUniforms['alignmentDistance'].value = effectController.alignment;
				velocityUniforms['cohesionDistance'].value = effectController.cohesion;
				velocityUniforms['freedomFactor'].value = effectController.freedom;

			};

			valuesChanger();

			gui.add(effectController, 'separation', 0.0, 100.0, 1.0).onChange(valuesChanger);
			gui.add(effectController, 'alignment', 0.0, 100, 0.001).onChange(valuesChanger);
			gui.add(effectController, 'cohesion', 0.0, 100, 0.025).onChange(valuesChanger);
			gui.close();

			initBirds();

		}

		function initComputeRenderer() {

			gpuCompute = new GPUComputationRenderer(WIDTH, WIDTH, renderer);

			const dtPosition = gpuCompute.createTexture();
			const dtVelocity = gpuCompute.createTexture();
			fillPositionTexture(dtPosition);
			fillVelocityTexture(dtVelocity);

			velocityVariable = gpuCompute.addVariable('textureVelocity', document.getElementById('fragmentShaderVelocity').textContent, dtVelocity);
			positionVariable = gpuCompute.addVariable('texturePosition', document.getElementById('fragmentShaderPosition').textContent, dtPosition);

			gpuCompute.setVariableDependencies(velocityVariable, [positionVariable, velocityVariable]);
			gpuCompute.setVariableDependencies(positionVariable, [positionVariable, velocityVariable]);

			positionUniforms = positionVariable.material.uniforms;
			velocityUniforms = velocityVariable.material.uniforms;

			positionUniforms['time'] = { value: 0.0 };
			positionUniforms['delta'] = { value: 0.0 };
			velocityUniforms['time'] = { value: 1.0 };
			velocityUniforms['delta'] = { value: 0.0 };
			velocityUniforms['testing'] = { value: 1.0 };
			velocityUniforms['separationDistance'] = { value: 1.0 };
			velocityUniforms['alignmentDistance'] = { value: 1.0 };
			velocityUniforms['cohesionDistance'] = { value: 1.0 };
			velocityUniforms['freedomFactor'] = { value: 1.0 };
			velocityUniforms['predator'] = { value: new THREE.Vector3() };
			velocityVariable.material.defines.BOUNDS = BOUNDS.toFixed(2);

			velocityVariable.wrapS = THREE.RepeatWrapping;
			velocityVariable.wrapT = THREE.RepeatWrapping;
			positionVariable.wrapS = THREE.RepeatWrapping;
			positionVariable.wrapT = THREE.RepeatWrapping;

			const error = gpuCompute.init();

			if (error !== null) {

				console.error(error);

			}

		}

		function initBirds() {

		
			function makeInstancedCubes() {
					let cubeGeo = new THREE.BoxGeometry(10, 10, 10);
				
					const matInstancedCustom = new THREE.MeshStandardMaterial( {
					vertexColors: false,
					flatShading: true,
					roughness: .5,
					metalness: .5,
					color: 0x00007A
				} );
			
				matInstancedCustom.onBeforeCompile = ( shader ) => {
					shader.uniforms.texturePosition = { value: null };
					shader.uniforms.textureVelocity = { value: null };
					shader.uniforms.time = { value: 1.0 };
					shader.uniforms.delta = { value: 0.0 };
					let token = '#define STANDARD';

					let insert = /* glsl */`
						varying vec3 uPos;
						varying vec2 vUv;
						attribute vec3 customPosition;
						attribute vec2 reference;

						uniform sampler2D texturePosition;
						uniform sampler2D textureVelocity;

						uniform float time;
					`;

					shader.vertexShader = shader.vertexShader.replace( token, token + insert );

					token = '#include <begin_vertex>';

					insert = /* glsl */`
						vec4 tmpPos = texture2D( texturePosition, reference );
						vec3 pos = tmpPos.xyz;
						vec3 velocity = normalize(texture2D( textureVelocity,reference ).xyz);

						vec3 newPosition = position;

						newPosition = mat3( modelMatrix ) * newPosition;


						velocity.z *= -1.;
						float xz = length( velocity.xz );
						float xyz = 1.;
						float x = sqrt( 1. - velocity.y * velocity.y );

						float cosry = velocity.x / xz;
						float sinry = velocity.z / xz;

						float cosrz = x / xyz;
						float sinrz = velocity.y / xyz;

						mat3 maty =  mat3(
							cosry, 0, -sinry,
							0    , 1, 0     ,
							sinry, 0, cosry

						);

						mat3 matz =  mat3(
							cosrz , sinrz, 0,
							-sinrz, cosrz, 0,
							0     , 0    , 1
						);

						newPosition =  maty * matz * newPosition;
						newPosition += pos;
						vec3 transformed = vec3(newPosition);
						uPos = transformed;
						vUv = uv;
					`;

					shader.vertexShader = shader.vertexShader.replace( token, insert );


					//fragemnt
					token = '#define STANDARD'
					insert = `
						varying vec3 uPos;
						varying vec2 vUv;
					`
					shader.fragmentShader = shader.fragmentShader.replace( token, insert );
					token = '#include <dithering_fragment>'
					insert = `
					
				
						gl_FragColor = vec4(vec3(vUv,outgoingLight.x),1.);
						gl_FragColor = vec4(outgoingLight,1.);
					`
					shader.fragmentShader = shader.fragmentShader.replace( token, insert );
					console.log(shader.fragmentShader)
					materialInstanceCustom2 = shader;

				};


				const matInstancedCustomForDepth = new THREE.MeshDepthMaterial({
					depthPacking : THREE.RGBADepthPacking
				});
			
				matInstancedCustomForDepth.onBeforeCompile = ( shader ) => {
					shader.uniforms.texturePosition = { value: null };
					shader.uniforms.textureVelocity = { value: null };
					shader.uniforms.time = { value: 1.0 };
					shader.uniforms.delta = { value: 0.0 };
					let token = '';

					let insert = /* glsl */`
						attribute vec3 customPosition;
						attribute vec2 reference;

						uniform sampler2D texturePosition;
						uniform sampler2D textureVelocity;

						uniform float time;
					`;

					shader.vertexShader = shader.vertexShader.replace( token, token + insert );

					token = '#include <begin_vertex>';

					insert = /* glsl */`
						vec4 tmpPos = texture2D( texturePosition, reference );
						vec3 pos = tmpPos.xyz;
						vec3 velocity = normalize(texture2D( textureVelocity,reference ).xyz);

						vec3 newPosition = position;

						newPosition = mat3( modelMatrix ) * newPosition;


						velocity.z *= -1.;
						float xz = length( velocity.xz );
						float xyz = 1.;
						float x = sqrt( 1. - velocity.y * velocity.y );

						float cosry = velocity.x / xz;
						float sinry = velocity.z / xz;

						float cosrz = x / xyz;
						float sinrz = velocity.y / xyz;

						mat3 maty =  mat3(
							cosry, 0, -sinry,
							0    , 1, 0     ,
							sinry, 0, cosry

						);

						mat3 matz =  mat3(
							cosrz , sinrz, 0,
							-sinrz, cosrz, 0,
							0     , 0    , 1
						);

						newPosition =  maty * matz * newPosition;
						newPosition += pos;
						vec3 transformed = vec3( newPosition);
					`;

					shader.vertexShader = shader.vertexShader.replace( token, insert );

					materialInstancecustomDepthMaterial = shader;

				};
				// testing , pos đc lấy từ texure
				const positions = new Float32Array(WIDTH *WIDTH  * 3);
				for (let i = 0; i < positions.length; i += 3) {
					positions[i] = Math.random() * 200 - 100; // Random x coordinate within a range
					positions[i + 1] = Math.random() * 200 - 100; // Random y coordinate within a range
					positions[i + 2] = Math.random() * 200 - 100; // Random z coordinate within a range
				}

		
				//
				let referenceFloat32 = new Float32Array(WIDTH*WIDTH*3);
					for (var i=0; i<referenceFloat32.length; i++) {
						referenceFloat32[i++] = (i%WIDTH)/WIDTH;
						referenceFloat32[i++] = Math.floor(i/WIDTH)/WIDTH;
					}

				cubeGeo.setAttribute('customPosition', new THREE.InstancedBufferAttribute(positions, 3));
				cubeGeo.setAttribute('reference', new THREE.InstancedBufferAttribute(referenceFloat32, 2));

				/////////////////////////////////////////////////
				// THÊM REFENCE VÀO ĐỂ ĐỌC POSTION TỪ DATATEXTURE 
				// for (var i=0; i<arr.length; i++) {
				// 	arr[i++] = (i%w)/w;
				// 	arr[i++] = Math.floor(i/w)/h;
				// 	arr[i++] = 0;
				// }
				/////////////////////////////////////////////////
				
				let mesh = new THREE.InstancedMesh(cubeGeo, matInstancedCustom, WIDTH *WIDTH);
				mesh.customDepthMaterial = matInstancedCustomForDepth
		
				mesh.castShadow = true
				mesh.receiveShadow = true;
				return mesh;
			}

			const InstancedMeshFinal = makeInstancedCubes();
			console.log(`1:::::::::::::::: ${InstancedMeshFinal}`);
			scene.add(InstancedMeshFinal);


			groundMesh = new THREE.Mesh(
				new THREE.PlaneGeometry(window.innerWidth,window.innerWidth),
				new THREE.MeshPhongMaterial({	color:0x353535})
			)
	
			groundMesh.rotateX(-Math.PI / 4.2)
			groundMesh.position.y = -300
		
			groundMesh.receiveShadow = true

			meshDemo = 	new THREE.Mesh(new THREE.SphereGeometry(10, 16, 16),
					new THREE.MeshPhongMaterial({
						color:0xfefefe
					}))
			
		//	meshDemo.receiveShadow  = true
		//	meshDemo.castShadow  = true
			scene.add(groundMesh,meshDemo);

		}

		function fillPositionTexture(texture) {

			const theArray = texture.image.data;

			for (let k = 0, kl = theArray.length; k < kl; k += 4) {

				const x = Math.random() * BOUNDS - BOUNDS_HALF;
				const y = Math.random() * BOUNDS - BOUNDS_HALF;
				const z = Math.random() * BOUNDS - BOUNDS_HALF;

				theArray[k + 0] = x;
				theArray[k + 1] = y;
				theArray[k + 2] = z;
				theArray[k + 3] = 1;

			}

		}

		function fillVelocityTexture(texture) {

			const theArray = texture.image.data;

			for (let k = 0, kl = theArray.length; k < kl; k += 4) {

				const x = Math.random() - 0.5;
				const y = Math.random() - 0.5;
				const z = Math.random() - 0.5;

				theArray[k + 0] = x * 10;
				theArray[k + 1] = y * 10;
				theArray[k + 2] = z * 10;
				theArray[k + 3] = 1;

			}

		}

		function onWindowResize() {

			windowHalfX = window.innerWidth / 2;
			windowHalfY = window.innerHeight / 2;

			camera.aspect = window.innerWidth / window.innerHeight;
			camera.updateProjectionMatrix();

			renderer.setSize(window.innerWidth, window.innerHeight);

		}

		function onPointerMove(event) {

			if (event.isPrimary === false) return;

			mouseX = event.clientX - windowHalfX;
			mouseY = event.clientY - windowHalfY;

		}

		//

		function animate() {

			requestAnimationFrame(animate);

			render();
			stats.update();

		}

		function render() {

			const now = performance.now();
			let delta = (now - last) / 1000;

			if (delta > 1) delta = 1; // safety cap on large deltas
			last = now;

			positionUniforms['time'].value = now;
			positionUniforms['delta'].value = delta;
			velocityUniforms['time'].value = now;
			velocityUniforms['delta'].value = delta;
			// birdUniforms['time'].value = now;
			// birdUniforms['delta'].value = delta;
			if ( materialShader ) materialShader.uniforms[ 'time' ].value = now / 1000;
			if ( materialShader ) materialShader.uniforms[ 'delta' ].value = delta;
			
			if ( materialInstanceCustom2 ) materialInstanceCustom2.uniforms[ 'time' ].value = now / 1000;
			if ( materialInstanceCustom2 ) materialInstanceCustom2.uniforms[ 'delta' ].value = delta;
			if ( materialInstancecustomDepthMaterial ) materialInstancecustomDepthMaterial.uniforms[ 'time' ].value = now / 1000;
			if ( materialInstancecustomDepthMaterial ) materialInstancecustomDepthMaterial.uniforms[ 'delta' ].value = delta;
			pointLightMNouse.position.x = mouseX
			pointLightMNouse.position.y = -mouseY
			meshDemo.position.x = mouseX
			meshDemo.position.y = -mouseY
			velocityUniforms['predator'].value.set(0.5 * mouseX / windowHalfX, - 0.5 * mouseY / windowHalfY, 0);
			
			// mouseX = 10000;
			// mouseY = 10000;

			gpuCompute.compute();
		
			// birdUniforms['texturePosition'].value = gpuCompute.getCurrentRenderTarget(positionVariable).texture;
			// birdUniforms['textureVelocity'].value = gpuCompute.getCurrentRenderTarget(velocityVariable).texture;
			if ( materialShader ) materialShader.uniforms[ 'texturePosition' ].value = gpuCompute.getCurrentRenderTarget( positionVariable ).texture;
			if ( materialShader ) materialShader.uniforms[ 'textureVelocity' ].value = gpuCompute.getCurrentRenderTarget( velocityVariable ).texture;
				
			if(materialInstanceCustom2)materialInstanceCustom2.uniforms[ 'texturePosition' ].value = gpuCompute.getCurrentRenderTarget( positionVariable ).texture;
			if ( materialInstanceCustom2 ) materialInstanceCustom2.uniforms[ 'textureVelocity' ].value = gpuCompute.getCurrentRenderTarget( velocityVariable ).texture;
			if(materialInstancecustomDepthMaterial)materialInstancecustomDepthMaterial.uniforms[ 'texturePosition' ].value = gpuCompute.getCurrentRenderTarget( positionVariable ).texture;
			if ( materialInstancecustomDepthMaterial ) materialInstancecustomDepthMaterial.uniforms[ 'textureVelocity' ].value = gpuCompute.getCurrentRenderTarget( velocityVariable ).texture;
	
			
			monitorPos.material.map = gpuCompute.getCurrentRenderTarget(positionVariable).texture;
			monitorVel.material.map = gpuCompute.getCurrentRenderTarget(velocityVariable).texture;
			renderer.render(scene, camera);

		}

	</script>
	</body>

</html>