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main.js
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main.js
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import { Vector2, Vector3, Matrix4, Box3,
Mesh, MeshBasicMaterial, ShaderMaterial, Scene, PerspectiveCamera, OrthographicCamera,
DirectionalLight, AmbientLight,
sRGBEncoding, RGBAFormat, FloatType,
WebGLRenderer, WebGLRenderTarget, TextureLoader } from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { FullScreenQuad } from 'three/addons/postprocessing/Pass.js';
import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
import { mergeGeometries } from 'three/examples/jsm/utils/BufferGeometryUtils.js';
import Stats from 'stats.js';
import {
MeshBVH, MeshBVHUniformStruct, FloatVertexAttributeTexture,
shaderStructs, shaderIntersectFunction, SAH, StaticGeometryGenerator
} from 'three-mesh-bvh';
import { GUI } from 'lil-gui';
import glsl_main from './glsl/main.glsl?raw'
import glsl_fuzz_brdf from './glsl/fuzz_brdf.glsl?raw'
import glsl_coat_brdf from './glsl/coat_brdf.glsl?raw'
import glsl_thin_film from './glsl/thin-film.glsl?raw'
import glsl_metal_brdf from './glsl/metal_brdf.glsl?raw'
import glsl_specular_brdf from './glsl/specular_brdf.glsl?raw'
import glsl_specular_btdf from './glsl/specular_btdf.glsl?raw'
import glsl_diffuse_brdf from './glsl/diffuse_brdf.glsl?raw'
import glsl_openpbr_surface from './glsl/openpbr_surface.glsl?raw'
import glsl_pathtracer from './glsl/pathtracer.glsl?raw'
import { Circle } from 'progressbar.js'
class MeshLoader
{
constructor()
{
this.result = null;
this.loader = new GLTFLoader();
}
reset()
{
this.result = null;
}
async load(path)
{
if (this.result) Promise.resolve(this.result);
let gltf = await this.loader.loadAsync(path);
let S = Array.isArray( gltf.scene ) ? gltf.scene : [ gltf.scene ];
const meshes = [];
for ( let i = 0, l = S.length; i < l; i++ )
{
S[i].traverseVisible( c =>
{
if (c.isMesh)
{
meshes.push(c);
}
}
)
}
if (meshes.length > 0)
{
const generator = new StaticGeometryGenerator(meshes);
generator.attributes = [ 'position', 'color', 'normal', 'tangent', 'uv', 'uv2' ];
generator.applyWorldTransforms = false;
let merged_mesh = new Mesh(generator.generate(), new MeshBasicMaterial());
let bvh = new MeshBVH( merged_mesh.geometry, { strategy: SAH, maxLeafTris: 1 } );
this.result = {scene:gltf.scene, bvh:bvh, mesh:merged_mesh};
console.log("==> loaded mesh ", path);
}
return this.result;
}
}
function array_to_vector3(array)
{
return new Vector3(array[0], array[1], array[2]);
}
const params =
{
//////////////////////////////////////////////////////
// renderer params
//////////////////////////////////////////////////////
scene_name: 'standard-shader-ball',
smooth_normals: true,
bounces: 6,
max_samples: 1024,
max_volume_steps: 8,
wireframe: false,
neutral_color: [0.5, 0.5, 0.5],
//////////////////////////////////////////////////////
// lighting params
//////////////////////////////////////////////////////
skyPower: 0.5,
skyColor: [0.8, 0.8, 1.0],
sunPower: 0.35,
sunAngularSize: 40.0,
sunLatitude: 40.0,
sunLongitude: 180.0,
sunColor: [1.0, 1.0, 0.8],
//////////////////////////////////////////////////////
// OpenPBR surface params
//////////////////////////////////////////////////////
base_weight: 1.0,
base_color: [0.8, 0.8, 0.8],
base_roughness: 0.0,
base_metalness: 0.0,
diffuse_mode: 8,
specular_weight: 1.0,
specular_color: [1.0, 1.0, 1.0],
specular_roughness: 0.1,
specular_anisotropy: 0.0,
specular_rotation: 0.0,
specular_ior: 1.6,
transmission_weight: 0.0,
transmission_color: [1.0, 1.0, 1.0],
transmission_depth: 0.0,
transmission_scatter: [0.0, 0.0, 0.0],
transmission_scatter_anisotropy: 0.0,
transmission_dispersion_abbe_number: 20.0,
transmission_dispersion_scale: 0.0,
subsurface_weight: 0.0,
subsurface_color: [0.8, 0.8, 0.8],
subsurface_radius: 0.2,
subsurface_radius_scale: [1.0, 0.5, 0.25],
subsurface_anisotropy: 0.0,
subsurface_mode: 0, // FOR TESTING
coat_weight: 0.0,
coat_color: [1.0, 1.0, 1.0],
coat_roughness: 0.0,
coat_anisotropy: 0.0,
coat_rotation: 0.0,
coat_ior: 1.3,
coat_darkening: 1.0,
fuzz_weight: 0.0,
fuzz_color: [1.0, 1.0, 1.0],
fuzz_roughness: 0.5,
emission_luminance: 0.0,
emission_color: [1.0, 1.0, 1.0],
thin_film_weight: 0.0,
thin_film_thickness: 1000.0,
thin_film_ior: 1.4,
geometry_opacity: 1.0,
geometry_thin_walled: false,
reset_camera: function() { reset_camera(params.scene_name); }
};
let renderer, camera, orbitControls, scene, gui, stats;
let rtQuad, rtMaterial, finalQuad, renderTarget;
let samples = 0;
let MESH_SURFACE;
let MESH_PROPS;
let BVH_SURFACE;
let BVH_PROPS;
var progress_bar;
var progress_finished_timer;
var LOADED;
var COMPILING;
var scene_names = {
'Standard Shader Ball': 'standard-shader-ball',
'Glavenus': 'glavenus',
'Terrain': 'terrain',
'Bearded Man': 'bearded-man'
}
var subsurface_mode_names = {
'OpenPBR (orig, 3-float)': 0,
'OpenPBR (luminace)': 1,
'OpenPBR (average)': 2,
'OpenPBR (max value)': 3,
'OpenPBR (weighted average)': 4,
'SPI / Arnold v1': 5,
'Arnold v2': 6,
'Uniform scattering': 7
}
var diffuse_mode_names = {
'Lambert': 0,
'ON Full (Mitsuba)': 1,
'ON Qualitative (QON)': 2,
'ON Qualitative - Energy Conserving (EQON exact)': 3,
'ON Qualitative - Energy Conserving (EQON approx)': 4,
'Fujii - Qualitative (FON)': 5,
'Fujii - Energy Conserving (EFON exact)': 6,
'Fujii - Energy Conserving (EFON approx)': 7,
'Fujii - Energy Conserving (EFON exact, LTC sampling)': 8,
'Fujii - Energy Conserving (EFON approx, LTC sampling)': 9,
'Fujii - MaterialX': 10,
'Chan Diffuse (Unreal)': 11,
'd\'Eon sphere model': 12
}
init();
render();
function updateSunDir()
{
let latTheta = (90.0-params.sunLatitude) * Math.PI/180.0;
let lonPhi = params.sunLongitude * Math.PI/180.0;
let costheta = Math.cos(latTheta);
let sintheta = Math.sin(latTheta);
let cosphi = Math.cos(lonPhi);
let sinphi = Math.sin(lonPhi);
let x = sintheta * cosphi;
let z = sintheta * sinphi;
let y = costheta;
params.sunDir = [x, y, z];
}
function init_three_scene()
{
// dummy scene setup
scene = new Scene();
// dummy light for preview while shaders compiling
const light = new DirectionalLight( 0xffffff, 1 );
light.position.set( 1, 1, 1 );
scene.add( light );
scene.add( new AmbientLight( 0xb0bec5, 0.5 ) );
return scene;
}
function init()
{
// Setup progress bar spinner
progress_bar = new Circle('#progress_overlay',
{
color: 'rgba(255, 128, 64, 0.75)',
strokeWidth: 5.0,
trailColor: 'rgba(255, 128, 64, 0.333)',
trailWidth: 3.0,
svgStyle: {
display: 'block',
width: '100%'
},
text: {
value: '',
className: 'progressbar__label',
style: {
color: 'rgba(169, 85, 42, 1.0)',
position: 'absolute',
fontWeight: 'bold',
left: '50%',
top: '50%',
padding: 0,
margin: 0,
transform: {
prefix: true,
value: 'translate(-50%, -50%)'
}
},
autoStyleContainer: true,
alignToBottom: true
},
fill: null,
duration: 2000.0,
easing: 'linear',
from: { color: 'rgba( 0, 0, 0, 0.0)' },
to: { color: 'rgba(32, 255, 32, 1.0)' },
warnings: true
});
progress_bar.set(0.0);
progress_bar.setText('');
LOADED = false;
MESH_SURFACE = null;
MESH_PROPS = null;
BVH_SURFACE = null;
BVH_PROPS = null;
// renderer setup
renderer = new WebGLRenderer( { antialias: true, preserveDrawingBuffer: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setClearColor( 0x09141a );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.outputEncoding = sRGBEncoding;
document.body.appendChild( renderer.domElement );
// dummy three.js scene
scene = init_three_scene();
// stats setup
stats = new Stats();
document.body.appendChild( stats.dom );
// Samples count text
let samples_txt = document.getElementById('samples');
samples_txt.style.visibility = 'visible';
// Info text
let info_txt = document.getElementById('info');
info_txt.style.visibility = 'visible';
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// OpenPBR surface params
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
rtMaterial = new ShaderMaterial( {
defines:
{
BOUNCES: params.bounces,
MAX_VOLUME_STEPS: params.max_volume_steps,
COAT_ENABLED: false,
TRANSMISSION_ENABLED: false,
VOLUME_ENABLED: false,
DISPERSION_ENABLED: false,
THIN_FILM_ENABLED: false,
},
uniforms:
{
bvh_surface: { value: new MeshBVHUniformStruct() },
normalAttribute_surface: { value: new FloatVertexAttributeTexture() },
tangentAttribute_surface:{ value: new FloatVertexAttributeTexture() },
has_normals_surface: { value: 1 },
has_tangents_surface: { value: 0 },
bvh_props: { value: new MeshBVHUniformStruct() },
normalAttribute_props: { value: new FloatVertexAttributeTexture() },
tangentAttribute_props:{ value: new FloatVertexAttributeTexture() },
has_normals_props: { value: 1 },
has_tangents_props: { value: 0 },
cameraWorldMatrix: { value: new Matrix4() },
invProjectionMatrix: { value: new Matrix4() },
invModelMatrix: { value: new Matrix4() },
resolution: { value: new Vector2() },
samples: { value: 0 },
accumulation_weight: { value: 1 },
//////////////////////////////////////////////////////
// renderer
//////////////////////////////////////////////////////
wireframe: { value: params.wireframe, },
neutral_color: { value: new Vector3().fromArray(params.neutral_color) },
smooth_normals: { value: params.smooth_normals, },
//////////////////////////////////////////////////////
// lighting
//////////////////////////////////////////////////////
skyPower: { value: params.skyPower, },
skyColor: { value: array_to_vector3(params.skyColor) },
sunPower: { value: Math.pow(10.0,params.sunPower), },
sunAngularSize: { value: params.sunAngularSize, },
sunColor: { value: array_to_vector3(params.sunColor) },
sunDir: { value: array_to_vector3([0,0,0]) },
//////////////////////////////////////////////////////
// material
//////////////////////////////////////////////////////
diffuse_mode: { value: params.diffuse_mode },
base_weight: { value: params.base_weight },
base_color: { value: array_to_vector3(params.base_color) },
base_roughness: { value: params.base_roughness },
base_metalness: { value: params.base_metalness },
specular_weight: { value: params.specular_weight, },
specular_color: { value: array_to_vector3(params.specular_color) },
specular_roughness: { value: params.specular_roughness },
specular_anisotropy: { value: params.specular_anisotropy },
specular_rotation: { value: params.specular_rotation },
specular_ior: { value: params.specular_ior },
transmission_weight: { value: params.transmission_weight, },
transmission_color: { value: array_to_vector3(params.transmission_color) },
transmission_depth: { value: params.transmission_depth },
transmission_scatter: { value: array_to_vector3(params.transmission_scatter) },
transmission_scatter_anisotropy: { value: params.transmission_scatter_anisotropy },
transmission_dispersion_abbe_number: { value: params.transmission_dispersion_abbe_number },
transmission_dispersion_scale: { value: params.transmission_dispersion_scale },
subsurface_weight: { value: params.subsurface_weight },
subsurface_color: { value: array_to_vector3(params.subsurface_color) },
subsurface_radius: { value: params.subsurface_radius },
subsurface_radius_scale: { value: array_to_vector3(params.subsurface_radius_scale) },
subsurface_anisotropy: { value: params.subsurface_anisotropy },
subsurface_mode: { value: params.subsurface_mode },
coat_weight: { value: params.coat_weight },
coat_color: { value: array_to_vector3(params.coat_color) },
coat_roughness: { value: params.coat_roughness },
coat_anisotropy: { value: params.coat_anisotropy },
coat_rotation: { value: params.coat_rotation },
coat_ior: { value: params.coat_ior },
coat_darkening: { value: params.coat_darkening },
fuzz_weight: { value: params.fuzz_weight },
fuzz_color: { value: array_to_vector3(params.fuzz_color) },
fuzz_roughness: { value: params.fuzz_roughness },
emission_luminance: { value: params.emission_luminance },
emission_color: { value: array_to_vector3(params.emission_color) },
thin_film_weight: { value: params.thin_film_weight },
thin_film_thickness: { value: params.thin_film_thickness },
thin_film_ior: { value: params.thin_film_ior },
geometry_opacity: { value: params.geometry_opacity },
geometry_thin_walled: { value: params.geometry_thin_walled }
},
vertexShader: `
varying vec2 vUv;
void main()
{
vec4 mvPosition = vec4( position, 1.0 );
mvPosition = modelViewMatrix * mvPosition;
gl_Position = projectionMatrix * mvPosition;
vUv = uv;
}
`,
fragmentShader: `precision highp isampler2D;
precision highp usampler2D;
precision highp int;
${ shaderStructs }
${ shaderIntersectFunction }
`
+ glsl_main
+ glsl_fuzz_brdf
+ glsl_coat_brdf
+ glsl_thin_film
+ glsl_specular_brdf
+ glsl_specular_btdf
+ glsl_metal_brdf
+ glsl_diffuse_brdf
+ glsl_openpbr_surface
+ glsl_pathtracer
} );
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// initialize the scene and update the material properties with the bvh, materials, etc
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
load_scene(params.scene_name);
}
function load_scene(scene_name)
{
const loader = new MeshLoader();
// @todo:
// - clear current THREE.js scene
LOADED = false;
progress_bar.setText('loading meshes...');
progress_bar.animate(0.0);
loader.load(scene_name + '/neutral_objects.glb').then( () => {
scene.add(loader.result.scene);
MESH_PROPS = loader.result.mesh;
BVH_PROPS = loader.result.bvh;
rtMaterial.uniforms.bvh_props.value.updateFrom( BVH_PROPS );
rtMaterial.uniforms.has_normals_props.value = false;
rtMaterial.uniforms.has_tangents_props.value = false;
if (MESH_PROPS.geometry.attributes.normal)
{
rtMaterial.uniforms.normalAttribute_props.value.updateFrom( MESH_PROPS.geometry.attributes.normal );
rtMaterial.uniforms.has_normals_props.value = true;
}
if (MESH_PROPS.geometry.attributes.tangent)
{
rtMaterial.uniforms.tangentAttribute_props.value.updateFrom( MESH_PROPS.geometry.attributes.tangent );
rtMaterial.uniforms.has_tangents_props.value = true;
}
console.log(" has_normals_scene: ", rtMaterial.uniforms.has_normals_props);
console.log(" has_tangents_scene: ", rtMaterial.uniforms.has_tangents_props);
progress_bar.animate(0.5);
loader.reset();
loader.load(scene_name + '/openpbr_objects.glb').then( () => {
scene.add(loader.result.scene);
MESH_SURFACE = loader.result.mesh;
BVH_SURFACE = loader.result.bvh;
rtMaterial.uniforms.bvh_surface.value.updateFrom( BVH_SURFACE );
rtMaterial.uniforms.has_normals_surface.value = false;
rtMaterial.uniforms.has_tangents_surface.value = false;
if (MESH_SURFACE.geometry.attributes.normal)
{
rtMaterial.uniforms.normalAttribute_surface.value.updateFrom( MESH_SURFACE.geometry.attributes.normal );
rtMaterial.uniforms.has_normals_surface.value = true;
}
if (MESH_SURFACE.geometry.attributes.tangent)
{
rtMaterial.uniforms.tangentAttribute_surface.value.updateFrom( MESH_SURFACE.geometry.attributes.tangent );
rtMaterial.uniforms.has_tangents_surface.value = true;
}
console.log(" has_normals_surface: ", rtMaterial.uniforms.has_normals_surface);
console.log(" has_tangents_surface: ", rtMaterial.uniforms.has_tangents_surface);
console.log("===> LOADED");
LOADED = true;
post_load_setup();
progress_bar.animate(1.0);
let progress_overlay = document.getElementById('progress_overlay');
progress_finished_timer = performance.now();
} )
} );
}
function reset_camera(scene_name)
{
let camera_fov = 23.6701655;
let camera_near = 0.01;
let camera_far = 1000.0;
camera = new PerspectiveCamera( camera_fov, window.innerWidth / window.innerHeight, camera_near, camera_far );
orbitControls = new OrbitControls( camera, renderer.domElement );
orbitControls.addEventListener( 'change', () => { resetSamples(); } );
let matrixWorld = new Matrix4();
if (scene_name == 'standard-shader-ball')
{
// Set camera default orientation according to the Standard Shader Ball USD asset description:
matrixWorld.set( 0.9396926207859084, 0, -0.3420201433256687, 0,
-0.2203032561704394, 0.7649214009184319, -0.6052782217606094, 0,
0.26161852717499334, 0.6441236297613865, 0.7187909959242699, 0,
6.531538924716362, 19.5, 17.948521838355774, 1 );
}
else if (scene_name == 'glavenus')
{
matrixWorld.set( 0.4848291963218869, -6.938893903907228e-18, -0.8746088556571293, 0,
-0.07533009256065425, 0.9962839037303908, -0.041758356319859954, 0,
0.8713587249512548, 0.08613003638530015, 0.4830275243540376, 0,
23.076273094000275, 6.7653774216248, 14.822630983786677, 1);
}
else if (scene_name == 'terrain')
{
matrixWorld.set( 0.7242953632536803, -1.1102230246251565e-16, -0.6894898307946385, 0,
-0.4511571209928634, 0.7562050657737049, -0.4739315886028461, 0,
0.5213957028463604, 0.6543346991396579, 0.5477158228088388, 0,
8.561709328489492, 11.460860759783042, 8.95672568146927, 1);
}
else if (scene_name == 'bearded-man')
{
matrixWorld.set(0.6586894440882616, -1.3877787807814457e-17, 0.752414922929295, 0,
0.13367205033823076, 0.9840924050751759, -0.11702102901499911, 0,
-0.7404458111199431, 0.17765736200156684, 0.648211279230448, 0,
-20.089277049402824, 9.131027464916848, 18.02162149148976, 1);
}
matrixWorld.transpose();
camera.matrixAutoUpdate = false;
camera.applyMatrix4(matrixWorld);
camera.matrixAutoUpdate = true;
camera.updateMatrixWorld();
let dir = new Vector3();
camera.getWorldDirection(dir);
let cam_target = camera.position.clone();
cam_target.addScaledVector(dir, 23.39613);
orbitControls.target.copy(cam_target);
orbitControls.zoomSpeed = 1.5;
orbitControls.flySpeed = 0.01;
orbitControls.update();
}
function coat_enabled()
{
if (params.coat_weight == 0.0)
return false;
return true;
}
function volume_enabled()
{
if (params.base_metalness == 1.0)
return false;
if (params.transmission_weight > 0.0 &&
params.transmission_depth > 0.0)
return true;
if (params.subsurface_weight > 0.0)
return true;
return false;
}
function transmission_enabled()
{
if (params.transmission_weight > 0.0)
return true;
if (params.subsurface_weight > 0.0)
return true;
return false;
}
function dispersion_enabled()
{
if (params.transmission_dispersion_scale > 0.0)
return true;
return false;
}
function thin_film_enabled()
{
if (params.thin_film_weight > 0.0)
return true;
return false;
}
function post_load_setup()
{
//////////////////////////////////////////////////////////
// Setup framebuffers
//////////////////////////////////////////////////////////
rtQuad = new FullScreenQuad( rtMaterial );
rtMaterial.transparent = true;
rtMaterial.depthWrite = false;
renderTarget = new WebGLRenderTarget(1, 1, {format: RGBAFormat, type: FloatType});
finalQuad = new FullScreenQuad( new MeshBasicMaterial({map: renderTarget.texture}) );
// Trigger initial shader compile
trigger_recompile();
//////////////////////////////////////////////////////////
// Setup camera
//////////////////////////////////////////////////////////
reset_camera(params.scene_name);
//////////////////////////////////////////////////////////
// Setup GUI
//////////////////////////////////////////////////////////
gui = new GUI({ width: 300 });
///// Material folder /////////////////////////////////////
const material_folder = gui.addFolder('Material');
// Base folder
const base_folder = material_folder.addFolder('Base');
base_folder.add(params, 'base_weight', 0.0, 1.0).onChange( v => { resetSamples(); });
base_folder.addColor(params, 'base_color').onChange( v => { resetSamples(); });
base_folder.add(params, 'base_roughness', 0.0, 1.0).onChange( v => { resetSamples(); });
base_folder.add(params, 'base_metalness', 0.0, 1.0).onChange( v => { resetSamples();
if (volume_enabled() != rtMaterial.defines.VOLUME_ENABLED)
{
rtMaterial.defines.VOLUME_ENABLED = volume_enabled();
trigger_recompile();
}});
base_folder.add(params, 'diffuse_mode', diffuse_mode_names).onChange( v => { resetSamples(); });
// Specular folder
const specular_folder = material_folder.addFolder('Specular');
specular_folder.add(params, 'specular_weight', 0.0, 1.0).onChange( v => { resetSamples(); });
specular_folder.addColor(params, 'specular_color').onChange( v => { resetSamples(); });
specular_folder.add(params, 'specular_roughness', 0.0, 1.0).onChange( v => { resetSamples(); });
specular_folder.add(params, 'specular_ior', 1.0, 5.0).onChange( v => { resetSamples(); });
specular_folder.add(params, 'specular_anisotropy', 0.0, 1.0).onChange( v => { resetSamples(); });
specular_folder.add(params, 'specular_rotation', 0.0, 1.0).onChange( v => { resetSamples(); });
// Transmission folder
const transmission_folder = material_folder.addFolder('Transmission');
transmission_folder.add(params, 'transmission_weight', 0.0, 1.0).onChange( v => { resetSamples();
if (volume_enabled() != rtMaterial.defines.VOLUME_ENABLED)
{
rtMaterial.defines.VOLUME_ENABLED = volume_enabled();
trigger_recompile();
}
if (transmission_enabled() != rtMaterial.defines.TRANSMISSION_ENABLED)
{
rtMaterial.defines.TRANSMISSION_ENABLED = transmission_enabled();
trigger_recompile();
}
});
transmission_folder.addColor(params, 'transmission_color').onChange( v => { resetSamples(); });
transmission_folder.add(params, 'transmission_depth', 0.0, 1.0).onChange( v => { resetSamples();
if (volume_enabled() != rtMaterial.defines.VOLUME_ENABLED)
{
rtMaterial.defines.VOLUME_ENABLED = volume_enabled();
trigger_recompile();
}});
transmission_folder.addColor(params, 'transmission_scatter').onChange( v => { resetSamples(); });
transmission_folder.add(params, 'transmission_scatter_anisotropy', -1.0, 1.0).onChange( v => { resetSamples(); });
transmission_folder.add(params, 'transmission_dispersion_abbe_number', 9.0, 91.0).onChange( v => { resetSamples(); });
transmission_folder.add(params, 'transmission_dispersion_scale', 0.0, 1.0).onChange( v => { resetSamples();
if (dispersion_enabled() != rtMaterial.defines.DISPERSION_ENABLED)
{
rtMaterial.defines.DISPERSION_ENABLED = dispersion_enabled();
trigger_recompile();
}});
transmission_folder.close();
// Subsurface folder
const subsurface_folder = material_folder.addFolder('Subsurface');
subsurface_folder.add(params, 'subsurface_weight', 0.0, 1.0).onChange( v => { resetSamples();
if (volume_enabled() != rtMaterial.defines.VOLUME_ENABLED)
{
rtMaterial.defines.VOLUME_ENABLED = volume_enabled();
trigger_recompile();
}
if (transmission_enabled() != rtMaterial.defines.TRANSMISSION_ENABLED)
{
rtMaterial.defines.TRANSMISSION_ENABLED = transmission_enabled();
trigger_recompile();
}
});
subsurface_folder.addColor(params, 'subsurface_color').onChange( v => { resetSamples(); });
subsurface_folder.add(params, 'subsurface_radius', 0.0, 1.0).onChange( v => { resetSamples(); });
subsurface_folder.addColor(params, 'subsurface_radius_scale').onChange( v => { resetSamples(); });
subsurface_folder.add(params, 'subsurface_anisotropy', -1.0, 1.0).onChange( v => { resetSamples(); });
subsurface_folder.add(params, 'subsurface_mode', subsurface_mode_names).onChange( v => { resetSamples(); });
subsurface_folder.close();
// Coat folder
const coat_folder = material_folder.addFolder('Coat');
coat_folder.add(params, 'coat_weight', 0.0, 1.0).onChange( v => { resetSamples();
if (coat_enabled() != rtMaterial.defines.COAT_ENABLED)
{
rtMaterial.defines.COAT_ENABLED = coat_enabled();
trigger_recompile();
}});
coat_folder.addColor(params, 'coat_color').onChange( v => { resetSamples(); });
coat_folder.add(params, 'coat_roughness', 0.0, 1.0).onChange( v => { resetSamples(); });
coat_folder.add(params, 'coat_ior', 1.0, 3.0).onChange( v => { resetSamples(); });
coat_folder.add(params, 'coat_anisotropy', 0.0, 1.0).onChange( v => { resetSamples(); });
coat_folder.add(params, 'coat_rotation', 0.0, 1.0).onChange( v => { resetSamples(); });
coat_folder.add(params, 'coat_darkening', 0.0, 1.0).onChange( v => { resetSamples(); });
coat_folder.close();
// Fuzz folder
const fuzz_folder = material_folder.addFolder('Fuzz');
fuzz_folder.add(params, 'fuzz_weight', 0.0, 1.0).onChange( v => { resetSamples(); });
fuzz_folder.addColor(params, 'fuzz_color').onChange( v => { resetSamples(); });
fuzz_folder.add(params, 'fuzz_roughness', 0.0, 1.0).onChange( v => { resetSamples(); });
fuzz_folder.close();
// Emission folder
const emission_folder = material_folder.addFolder('Emission');
emission_folder.add(params, 'emission_luminance', 0.0, 10.0).onChange( v => { resetSamples(); });
emission_folder.addColor(params, 'emission_color').onChange( v => { resetSamples(); });
emission_folder.close();
// Thin-film folder
const thin_film_folder = material_folder.addFolder('Thin Film');
thin_film_folder.add(params, 'thin_film_weight', 0.0, 1.0).onChange( v => { resetSamples();
if (thin_film_enabled() != rtMaterial.defines.THIN_FILM_ENABLED)
{
rtMaterial.defines.THIN_FILM_ENABLED = thin_film_enabled();
trigger_recompile();
}});
thin_film_folder.add(params, 'thin_film_thickness', 0.0, 2000.0).onChange( v => { resetSamples(); });
thin_film_folder.add(params, 'thin_film_ior', 1.0, 3.0).onChange( v => { resetSamples(); });
thin_film_folder.close();
// geometry folder
const geometry_folder = material_folder.addFolder('Geometry');
geometry_folder.add(params, 'geometry_opacity', 0.0, 1.0).onChange( v => { resetSamples(); });
geometry_folder.add(params, 'geometry_thin_walled').onChange( v => { resetSamples(); });
geometry_folder.close();
///// Lighting folder /////////////////////////////////////
const lighting_folder = gui.addFolder('Lighting');
lighting_folder.add(params, 'skyPower', 0.0, 2.0).onChange( v => { resetSamples(); });
lighting_folder.addColor(params, 'skyColor').onChange( v => { resetSamples(); });
lighting_folder.add(params, 'sunPower', -4.0, 4.0).onChange( v => { resetSamples(); });
lighting_folder.add(params, 'sunAngularSize', 0.0, 40.0).onChange( v => { resetSamples(); });
lighting_folder.add(params, 'sunLatitude', 0.0, 90.0).onChange( v => { resetSamples(); });
lighting_folder.add(params, 'sunLongitude', 0.0, 360.0).onChange( v => { resetSamples(); });
lighting_folder.addColor(params, 'sunColor').onChange( v => { resetSamples(); });
lighting_folder.close();
///// Renderer folder /////////////////////////////////////
const renderer_folder = gui.addFolder('Renderer');
renderer_folder.add(params, 'scene_name', scene_names).onChange( v => { console.log(v);
load_scene(v);
resetSamples(); });
renderer_folder.add( params, 'smooth_normals' ).onChange( v => { resetSamples(); });
renderer_folder.add( params, 'wireframe' ).onChange( v => { resetSamples(); });
renderer_folder.addColor(params, 'neutral_color').onChange( v => { resetSamples(); });
renderer_folder.add( params, 'bounces', 0, 100, 1 ).onChange( v => { rtMaterial.defines.BOUNCES = parseInt( v );
resetSamples();
trigger_recompile(); });
renderer_folder.add( params, 'max_samples' ).onChange( v => { resetSamples(); });
renderer_folder.add( params, 'max_volume_steps', 1, 100, 1 ).onChange( v => { rtMaterial.defines.MAX_VOLUME_STEPS = parseInt( v );
resetSamples();
trigger_recompile(); });
renderer_folder.close();
gui.add( params, 'reset_camera' );
gui.open();
//////////////////////////////////////////////////////////
// Setup window
//////////////////////////////////////////////////////////
window.addEventListener( 'resize', resize, false );
resize();
}
function trigger_recompile()
{
renderer.setRenderTarget( renderTarget );
let tmp_cam = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
startCompilationProgress();
let compile_promise = renderer.compileAsync(rtQuad._mesh, tmp_cam);
compile_promise.then((val) => {
console.log('shaders successfully compiled.');
finishCompilationProgress();
}).catch((err) => {
console.log('shader compilation error: ' + err);
}).finally(() => {});
}
function startCompilationProgress()
{
let progress_overlay = document.getElementById('progress_overlay');
progress_overlay.style.display = 'block';
progress_overlay.style.opacity = 1;
progress_bar.set(0.0);
progress_bar.setText('shaders compiling...');
COMPILING = true;
}
function finishCompilationProgress()
{
progress_bar.set(1.0);
progress_finished_timer = performance.now();
COMPILING = false;
}
function resize()
{
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
const w = window.innerWidth;
const h = window.innerHeight;
renderer.setSize( w, h );
renderer.setPixelRatio(1.0);
renderTarget.setSize(w, h);
resetSamples();
}
function get_vector3(array3)
{
return new Vector3(array3[0], array3[1], array3[2]);
}
function resetSamples()
{
if (rtMaterial)
rtMaterial.needsUpdate = true;
samples = 0;
}
function fadeOutProgressBar(time_ms)
{
let progress_overlay = document.getElementById('progress_overlay');
var fadeOutEffect = setInterval(function () {
if (!progress_overlay.style.opacity) {
progress_overlay.style.opacity = 1;
}
if (progress_overlay.style.opacity > 0) {
progress_overlay.style.opacity -= 0.025;
} else {
progress_overlay.style.display = 'none';
progress_overlay.style.opacity = 0;
clearInterval(fadeOutEffect);
}
}, time_ms);
}
function render()
{
if (!LOADED)
{
console.log('not LOADED')
requestAnimationFrame( render );
return;
}
renderer.domElement.style.imageRendering = 'auto';
if (samples >= params.max_samples)
{
requestAnimationFrame( render );
return;
}
if (!COMPILING && LOADED)
{
camera.updateMatrixWorld();
//////////////////////////////////////////////////////
// sync shader uniforms
//////////////////////////////////////////////////////
const uniforms = rtQuad.material.uniforms;
const w = window.innerWidth;
const h = window.innerHeight;
// sync camera
uniforms.cameraWorldMatrix.value.copy( camera.matrixWorld );
uniforms.invProjectionMatrix.value.copy( camera.projectionMatrixInverse );
uniforms.invModelMatrix.value.copy( scene.matrixWorld ).invert();
// sync renderer params
let resolution = new Vector2(w, h);
uniforms.resolution.value.copy(resolution);
uniforms.accumulation_weight.value = 1.0 / (samples + 1.0); // implements Monte-Carlo accumulation
uniforms.samples.value = samples;
uniforms.wireframe.value = params.wireframe;
uniforms.neutral_color.value.copy(get_vector3( params.neutral_color));
uniforms.smooth_normals.value = params.smooth_normals;
// sync material params
uniforms.base_weight.value = params.base_weight;
uniforms.base_color.value.copy(get_vector3( params.base_color));
uniforms.base_roughness.value = params.base_roughness;
uniforms.base_metalness.value = params.base_metalness;
uniforms.diffuse_mode.value = params.diffuse_mode;
uniforms.specular_weight.value = params.specular_weight;
uniforms.specular_color.value.copy(get_vector3( params.specular_color));
uniforms.specular_roughness.value = params.specular_roughness;
uniforms.specular_anisotropy.value = params.specular_anisotropy;
uniforms.specular_rotation.value = params.specular_rotation;
uniforms.specular_ior.value = params.specular_ior;
uniforms.transmission_weight.value = params.transmission_weight;
uniforms.transmission_color.value.copy(get_vector3( params.transmission_color));
uniforms.transmission_depth.value = params.transmission_depth;
uniforms.transmission_scatter.value.copy(get_vector3( params.transmission_scatter));
uniforms.transmission_scatter_anisotropy.value = params.transmission_scatter_anisotropy;
uniforms.transmission_dispersion_abbe_number.value = params.transmission_dispersion_abbe_number;
uniforms.transmission_dispersion_scale.value = params.transmission_dispersion_scale;
uniforms.subsurface_weight.value = params.subsurface_weight;
uniforms.subsurface_color.value.copy(get_vector3( params.subsurface_color));
uniforms.subsurface_radius.value = params.subsurface_radius;
uniforms.subsurface_radius_scale.value.copy(get_vector3(params.subsurface_radius_scale));
uniforms.subsurface_anisotropy.value = params.subsurface_anisotropy;
uniforms.subsurface_mode.value = params.subsurface_mode;
uniforms.coat_weight.value = params.coat_weight;
uniforms.coat_color.value.copy(get_vector3( params.coat_color));
uniforms.coat_roughness.value = params.coat_roughness;
uniforms.coat_anisotropy.value = params.coat_anisotropy;
uniforms.coat_rotation.value = params.coat_rotation;
uniforms.coat_ior.value = params.coat_ior;
uniforms.coat_darkening .value = params.coat_darkening;
uniforms.fuzz_weight.value = params.fuzz_weight;