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WebGLRenderer.js
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/**
* @author supereggbert / http://www.paulbrunt.co.uk/
* @author mrdoob / http://mrdoob.com/
* @author alteredq / http://alteredqualia.com/
* @author szimek / https://github.com/szimek/
* @author tschw
*/
import {
RGBAFormat,
HalfFloatType,
FloatType,
UnsignedByteType,
LinearEncoding,
LinearToneMapping,
BackSide
} from '../constants.js';
import { MathUtils } from '../math/MathUtils.js';
import { DataTexture } from '../textures/DataTexture.js';
import { Frustum } from '../math/Frustum.js';
import { Matrix4 } from '../math/Matrix4.js';
import { UniformsLib } from './shaders/UniformsLib.js';
import { Vector2 } from '../math/Vector2.js';
import { Vector3 } from '../math/Vector3.js';
import { Vector4 } from '../math/Vector4.js';
import { Scene } from '../scenes/Scene.js';
import { WebGLAnimation } from './webgl/WebGLAnimation.js';
import { WebGLAttributes } from './webgl/WebGLAttributes.js';
import { WebGLBackground } from './webgl/WebGLBackground.js';
import { WebGLBufferRenderer } from './webgl/WebGLBufferRenderer.js';
import { WebGLCapabilities } from './webgl/WebGLCapabilities.js';
import { WebGLClipping } from './webgl/WebGLClipping.js';
import { WebGLExtensions } from './webgl/WebGLExtensions.js';
import { WebGLGeometries } from './webgl/WebGLGeometries.js';
import { WebGLIndexedBufferRenderer } from './webgl/WebGLIndexedBufferRenderer.js';
import { WebGLInfo } from './webgl/WebGLInfo.js';
import { WebGLMorphtargets } from './webgl/WebGLMorphtargets.js';
import { WebGLObjects } from './webgl/WebGLObjects.js';
import { WebGLPrograms } from './webgl/WebGLPrograms.js';
import { WebGLProperties } from './webgl/WebGLProperties.js';
import { WebGLRenderLists } from './webgl/WebGLRenderLists.js';
import { WebGLRenderStates } from './webgl/WebGLRenderStates.js';
import { WebGLShadowMap } from './webgl/WebGLShadowMap.js';
import { WebGLState } from './webgl/WebGLState.js';
import { WebGLTextures } from './webgl/WebGLTextures.js';
import { WebGLUniforms } from './webgl/WebGLUniforms.js';
import { WebGLUtils } from './webgl/WebGLUtils.js';
import { WebGLMultiview } from './webgl/WebGLMultiview.js';
import { WebXRManager } from './webxr/WebXRManager.js';
function WebGLRenderer( parameters ) {
parameters = parameters || {};
var _canvas = parameters.canvas !== undefined ? parameters.canvas : document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ),
_context = parameters.context !== undefined ? parameters.context : null,
_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
_depth = parameters.depth !== undefined ? parameters.depth : true,
_stencil = parameters.stencil !== undefined ? parameters.stencil : true,
_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
_preserveDrawingBuffer = parameters.preserveDrawingBuffer !== undefined ? parameters.preserveDrawingBuffer : false,
_powerPreference = parameters.powerPreference !== undefined ? parameters.powerPreference : 'default',
_failIfMajorPerformanceCaveat = parameters.failIfMajorPerformanceCaveat !== undefined ? parameters.failIfMajorPerformanceCaveat : false;
var currentRenderList = null;
var currentRenderState = null;
// public properties
this.domElement = _canvas;
// Debug configuration container
this.debug = {
/**
* Enables error checking and reporting when shader programs are being compiled
* @type {boolean}
*/
checkShaderErrors: true
};
// clearing
this.autoClear = true;
this.autoClearColor = true;
this.autoClearDepth = true;
this.autoClearStencil = true;
// scene graph
this.sortObjects = true;
// user-defined clipping
this.clippingPlanes = [];
this.localClippingEnabled = false;
// physically based shading
this.gammaFactor = 2.0; // for backwards compatibility
this.outputEncoding = LinearEncoding;
// physical lights
this.physicallyCorrectLights = false;
// tone mapping
this.toneMapping = LinearToneMapping;
this.toneMappingExposure = 1.0;
this.toneMappingWhitePoint = 1.0;
// morphs
this.maxMorphTargets = 8;
this.maxMorphNormals = 4;
// internal properties
var _this = this,
_isContextLost = false,
// internal state cache
_framebuffer = null,
_currentActiveCubeFace = 0,
_currentActiveMipmapLevel = 0,
_currentRenderTarget = null,
_currentFramebuffer = null,
_currentMaterialId = - 1,
// geometry and program caching
_currentGeometryProgram = {
geometry: null,
program: null,
wireframe: false
},
_currentCamera = null,
_currentArrayCamera = null,
_currentViewport = new Vector4(),
_currentScissor = new Vector4(),
_currentScissorTest = null,
//
_width = _canvas.width,
_height = _canvas.height,
_pixelRatio = 1,
_opaqueSort = null,
_transparentSort = null,
_viewport = new Vector4( 0, 0, _width, _height ),
_scissor = new Vector4( 0, 0, _width, _height ),
_scissorTest = false,
// frustum
_frustum = new Frustum(),
// clipping
_clipping = new WebGLClipping(),
_clippingEnabled = false,
_localClippingEnabled = false,
// camera matrices cache
_projScreenMatrix = new Matrix4(),
_vector3 = new Vector3();
function getTargetPixelRatio() {
return _currentRenderTarget === null ? _pixelRatio : 1;
}
// initialize
var _gl;
try {
var contextAttributes = {
alpha: _alpha,
depth: _depth,
stencil: _stencil,
antialias: _antialias,
premultipliedAlpha: _premultipliedAlpha,
preserveDrawingBuffer: _preserveDrawingBuffer,
powerPreference: _powerPreference,
failIfMajorPerformanceCaveat: _failIfMajorPerformanceCaveat,
xrCompatible: true
};
// event listeners must be registered before WebGL context is created, see #12753
_canvas.addEventListener( 'webglcontextlost', onContextLost, false );
_canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
_gl = _context || _canvas.getContext( 'webgl', contextAttributes ) || _canvas.getContext( 'experimental-webgl', contextAttributes );
if ( _gl === null ) {
if ( _canvas.getContext( 'webgl' ) !== null ) {
throw new Error( 'Error creating WebGL context with your selected attributes.' );
} else {
throw new Error( 'Error creating WebGL context.' );
}
}
// Some experimental-webgl implementations do not have getShaderPrecisionFormat
if ( _gl.getShaderPrecisionFormat === undefined ) {
_gl.getShaderPrecisionFormat = function () {
return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };
};
}
} catch ( error ) {
console.error( 'THREE.WebGLRenderer: ' + error.message );
throw error;
}
var extensions, capabilities, state, info;
var properties, textures, attributes, geometries, objects;
var programCache, renderLists, renderStates;
var background, morphtargets, bufferRenderer, indexedBufferRenderer;
var utils;
function initGLContext() {
extensions = new WebGLExtensions( _gl );
capabilities = new WebGLCapabilities( _gl, extensions, parameters );
if ( capabilities.isWebGL2 === false ) {
extensions.get( 'WEBGL_depth_texture' );
extensions.get( 'OES_texture_float' );
extensions.get( 'OES_texture_half_float' );
extensions.get( 'OES_texture_half_float_linear' );
extensions.get( 'OES_standard_derivatives' );
extensions.get( 'OES_element_index_uint' );
extensions.get( 'ANGLE_instanced_arrays' );
}
extensions.get( 'OES_texture_float_linear' );
utils = new WebGLUtils( _gl, extensions, capabilities );
state = new WebGLState( _gl, extensions, capabilities );
state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
info = new WebGLInfo( _gl );
properties = new WebGLProperties();
textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
attributes = new WebGLAttributes( _gl, capabilities );
geometries = new WebGLGeometries( _gl, attributes, info );
objects = new WebGLObjects( _gl, geometries, attributes, info );
morphtargets = new WebGLMorphtargets( _gl );
programCache = new WebGLPrograms( _this, extensions, capabilities );
renderLists = new WebGLRenderLists();
renderStates = new WebGLRenderStates();
background = new WebGLBackground( _this, state, objects, _premultipliedAlpha );
bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info, capabilities );
indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info, capabilities );
info.programs = programCache.programs;
_this.capabilities = capabilities;
_this.extensions = extensions;
_this.properties = properties;
_this.renderLists = renderLists;
_this.state = state;
_this.info = info;
}
initGLContext();
// xr
var xr = new WebXRManager( _this, _gl );
this.xr = xr;
// Multiview
var multiview = new WebGLMultiview( _this, _gl );
// shadow map
var shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );
this.shadowMap = shadowMap;
// API
this.getContext = function () {
return _gl;
};
this.getContextAttributes = function () {
return _gl.getContextAttributes();
};
this.forceContextLoss = function () {
var extension = extensions.get( 'WEBGL_lose_context' );
if ( extension ) extension.loseContext();
};
this.forceContextRestore = function () {
var extension = extensions.get( 'WEBGL_lose_context' );
if ( extension ) extension.restoreContext();
};
this.getPixelRatio = function () {
return _pixelRatio;
};
this.setPixelRatio = function ( value ) {
if ( value === undefined ) return;
_pixelRatio = value;
this.setSize( _width, _height, false );
};
this.getSize = function ( target ) {
if ( target === undefined ) {
console.warn( 'WebGLRenderer: .getsize() now requires a Vector2 as an argument' );
target = new Vector2();
}
return target.set( _width, _height );
};
this.setSize = function ( width, height, updateStyle ) {
if ( xr.isPresenting ) {
console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
return;
}
_width = width;
_height = height;
_canvas.width = Math.floor( width * _pixelRatio );
_canvas.height = Math.floor( height * _pixelRatio );
if ( updateStyle !== false ) {
_canvas.style.width = width + 'px';
_canvas.style.height = height + 'px';
}
this.setViewport( 0, 0, width, height );
};
this.getDrawingBufferSize = function ( target ) {
if ( target === undefined ) {
console.warn( 'WebGLRenderer: .getdrawingBufferSize() now requires a Vector2 as an argument' );
target = new Vector2();
}
return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();
};
this.setDrawingBufferSize = function ( width, height, pixelRatio ) {
_width = width;
_height = height;
_pixelRatio = pixelRatio;
_canvas.width = Math.floor( width * pixelRatio );
_canvas.height = Math.floor( height * pixelRatio );
this.setViewport( 0, 0, width, height );
};
this.getCurrentViewport = function ( target ) {
if ( target === undefined ) {
console.warn( 'WebGLRenderer: .getCurrentViewport() now requires a Vector4 as an argument' );
target = new Vector4();
}
return target.copy( _currentViewport );
};
this.getViewport = function ( target ) {
return target.copy( _viewport );
};
this.setViewport = function ( x, y, width, height ) {
if ( x.isVector4 ) {
_viewport.set( x.x, x.y, x.z, x.w );
} else {
_viewport.set( x, y, width, height );
}
state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor() );
};
this.getScissor = function ( target ) {
return target.copy( _scissor );
};
this.setScissor = function ( x, y, width, height ) {
if ( x.isVector4 ) {
_scissor.set( x.x, x.y, x.z, x.w );
} else {
_scissor.set( x, y, width, height );
}
state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor() );
};
this.getScissorTest = function () {
return _scissorTest;
};
this.setScissorTest = function ( boolean ) {
state.setScissorTest( _scissorTest = boolean );
};
this.setOpaqueSort = function ( method ) {
_opaqueSort = method;
};
this.setTransparentSort = function ( method ) {
_transparentSort = method;
};
// Clearing
this.getClearColor = function () {
return background.getClearColor();
};
this.setClearColor = function () {
background.setClearColor.apply( background, arguments );
};
this.getClearAlpha = function () {
return background.getClearAlpha();
};
this.setClearAlpha = function () {
background.setClearAlpha.apply( background, arguments );
};
this.clear = function ( color, depth, stencil ) {
var bits = 0;
if ( color === undefined || color ) bits |= _gl.COLOR_BUFFER_BIT;
if ( depth === undefined || depth ) bits |= _gl.DEPTH_BUFFER_BIT;
if ( stencil === undefined || stencil ) bits |= _gl.STENCIL_BUFFER_BIT;
_gl.clear( bits );
};
this.clearColor = function () {
this.clear( true, false, false );
};
this.clearDepth = function () {
this.clear( false, true, false );
};
this.clearStencil = function () {
this.clear( false, false, true );
};
//
this.dispose = function () {
_canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
_canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
renderLists.dispose();
renderStates.dispose();
properties.dispose();
objects.dispose();
xr.dispose();
animation.stop();
};
// Events
function onContextLost( event ) {
event.preventDefault();
console.log( 'THREE.WebGLRenderer: Context Lost.' );
_isContextLost = true;
}
function onContextRestore( /* event */ ) {
console.log( 'THREE.WebGLRenderer: Context Restored.' );
_isContextLost = false;
initGLContext();
}
function onMaterialDispose( event ) {
var material = event.target;
material.removeEventListener( 'dispose', onMaterialDispose );
deallocateMaterial( material );
}
// Buffer deallocation
function deallocateMaterial( material ) {
releaseMaterialProgramReference( material );
properties.remove( material );
}
function releaseMaterialProgramReference( material ) {
var programInfo = properties.get( material ).program;
material.program = undefined;
if ( programInfo !== undefined ) {
programCache.releaseProgram( programInfo );
}
}
// Buffer rendering
function renderObjectImmediate( object, program ) {
object.render( function ( object ) {
_this.renderBufferImmediate( object, program );
} );
}
this.renderBufferImmediate = function ( object, program ) {
state.initAttributes();
var buffers = properties.get( object );
if ( object.hasPositions && ! buffers.position ) buffers.position = _gl.createBuffer();
if ( object.hasNormals && ! buffers.normal ) buffers.normal = _gl.createBuffer();
if ( object.hasUvs && ! buffers.uv ) buffers.uv = _gl.createBuffer();
if ( object.hasColors && ! buffers.color ) buffers.color = _gl.createBuffer();
var programAttributes = program.getAttributes();
if ( object.hasPositions ) {
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.position );
_gl.bufferData( _gl.ARRAY_BUFFER, object.positionArray, _gl.DYNAMIC_DRAW );
state.enableAttribute( programAttributes.position );
_gl.vertexAttribPointer( programAttributes.position, 3, _gl.FLOAT, false, 0, 0 );
}
if ( object.hasNormals ) {
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.normal );
_gl.bufferData( _gl.ARRAY_BUFFER, object.normalArray, _gl.DYNAMIC_DRAW );
state.enableAttribute( programAttributes.normal );
_gl.vertexAttribPointer( programAttributes.normal, 3, _gl.FLOAT, false, 0, 0 );
}
if ( object.hasUvs ) {
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.uv );
_gl.bufferData( _gl.ARRAY_BUFFER, object.uvArray, _gl.DYNAMIC_DRAW );
state.enableAttribute( programAttributes.uv );
_gl.vertexAttribPointer( programAttributes.uv, 2, _gl.FLOAT, false, 0, 0 );
}
if ( object.hasColors ) {
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffers.color );
_gl.bufferData( _gl.ARRAY_BUFFER, object.colorArray, _gl.DYNAMIC_DRAW );
state.enableAttribute( programAttributes.color );
_gl.vertexAttribPointer( programAttributes.color, 3, _gl.FLOAT, false, 0, 0 );
}
state.disableUnusedAttributes();
_gl.drawArrays( _gl.TRIANGLES, 0, object.count );
object.count = 0;
};
var tempScene = new Scene();
this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {
if ( scene === null ) scene = tempScene; // renderBufferDirect second parameter used to be fog (could be null)
var frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
var program = setProgram( camera, scene, material, object );
state.setMaterial( material, frontFaceCW );
var updateBuffers = false;
if ( _currentGeometryProgram.geometry !== geometry.id ||
_currentGeometryProgram.program !== program.id ||
_currentGeometryProgram.wireframe !== ( material.wireframe === true ) ) {
_currentGeometryProgram.geometry = geometry.id;
_currentGeometryProgram.program = program.id;
_currentGeometryProgram.wireframe = material.wireframe === true;
updateBuffers = true;
}
if ( material.morphTargets || material.morphNormals ) {
morphtargets.update( object, geometry, material, program );
updateBuffers = true;
}
//
var index = geometry.index;
var position = geometry.attributes.position;
//
if ( index === null ) {
if ( position === undefined || position.count === 0 ) return;
} else if ( index.count === 0 ) {
return;
}
//
var rangeFactor = 1;
if ( material.wireframe === true ) {
index = geometries.getWireframeAttribute( geometry );
rangeFactor = 2;
}
var attribute;
var renderer = bufferRenderer;
if ( index !== null ) {
attribute = attributes.get( index );
renderer = indexedBufferRenderer;
renderer.setIndex( attribute );
}
if ( updateBuffers ) {
setupVertexAttributes( object, geometry, material, program );
if ( index !== null ) {
_gl.bindBuffer( _gl.ELEMENT_ARRAY_BUFFER, attribute.buffer );
}
}
//
var dataCount = ( index !== null ) ? index.count : position.count;
var rangeStart = geometry.drawRange.start * rangeFactor;
var rangeCount = geometry.drawRange.count * rangeFactor;
var groupStart = group !== null ? group.start * rangeFactor : 0;
var groupCount = group !== null ? group.count * rangeFactor : Infinity;
var drawStart = Math.max( rangeStart, groupStart );
var drawEnd = Math.min( dataCount, rangeStart + rangeCount, groupStart + groupCount ) - 1;
var drawCount = Math.max( 0, drawEnd - drawStart + 1 );
if ( drawCount === 0 ) return;
//
if ( object.isMesh ) {
if ( material.wireframe === true ) {
state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
renderer.setMode( _gl.LINES );
} else {
renderer.setMode( _gl.TRIANGLES );
}
} else if ( object.isLine ) {
var lineWidth = material.linewidth;
if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material
state.setLineWidth( lineWidth * getTargetPixelRatio() );
if ( object.isLineSegments ) {
renderer.setMode( _gl.LINES );
} else if ( object.isLineLoop ) {
renderer.setMode( _gl.LINE_LOOP );
} else {
renderer.setMode( _gl.LINE_STRIP );
}
} else if ( object.isPoints ) {
renderer.setMode( _gl.POINTS );
} else if ( object.isSprite ) {
renderer.setMode( _gl.TRIANGLES );
}
if ( object.isInstancedMesh ) {
renderer.renderInstances( geometry, drawStart, drawCount, object.count );
} else if ( geometry.isInstancedBufferGeometry ) {
renderer.renderInstances( geometry, drawStart, drawCount, geometry.maxInstancedCount );
} else {
renderer.render( drawStart, drawCount );
}
};
function setupVertexAttributes( object, geometry, material, program ) {
if ( capabilities.isWebGL2 === false && ( object.isInstancedMesh || geometry.isInstancedBufferGeometry ) ) {
if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) return;
}
state.initAttributes();
var geometryAttributes = geometry.attributes;
var programAttributes = program.getAttributes();
var materialDefaultAttributeValues = material.defaultAttributeValues;
for ( var name in programAttributes ) {
var programAttribute = programAttributes[ name ];
if ( programAttribute >= 0 ) {
var geometryAttribute = geometryAttributes[ name ];
if ( geometryAttribute !== undefined ) {
var normalized = geometryAttribute.normalized;
var size = geometryAttribute.itemSize;
var attribute = attributes.get( geometryAttribute );
// TODO Attribute may not be available on context restore
if ( attribute === undefined ) continue;
var buffer = attribute.buffer;
var type = attribute.type;
var bytesPerElement = attribute.bytesPerElement;
if ( geometryAttribute.isInterleavedBufferAttribute ) {
var data = geometryAttribute.data;
var stride = data.stride;
var offset = geometryAttribute.offset;
if ( data && data.isInstancedInterleavedBuffer ) {
state.enableAttributeAndDivisor( programAttribute, data.meshPerAttribute );
if ( geometry.maxInstancedCount === undefined ) {
geometry.maxInstancedCount = data.meshPerAttribute * data.count;
}
} else {
state.enableAttribute( programAttribute );
}
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffer );
_gl.vertexAttribPointer( programAttribute, size, type, normalized, stride * bytesPerElement, offset * bytesPerElement );
} else {
if ( geometryAttribute.isInstancedBufferAttribute ) {
state.enableAttributeAndDivisor( programAttribute, geometryAttribute.meshPerAttribute );
if ( geometry.maxInstancedCount === undefined ) {
geometry.maxInstancedCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
}
} else {
state.enableAttribute( programAttribute );
}
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffer );
_gl.vertexAttribPointer( programAttribute, size, type, normalized, 0, 0 );
}
} else if ( name === 'instanceMatrix' ) {
var attribute = attributes.get( object.instanceMatrix );
// TODO Attribute may not be available on context restore
if ( attribute === undefined ) continue;
var buffer = attribute.buffer;
var type = attribute.type;
state.enableAttributeAndDivisor( programAttribute + 0, 1 );
state.enableAttributeAndDivisor( programAttribute + 1, 1 );
state.enableAttributeAndDivisor( programAttribute + 2, 1 );
state.enableAttributeAndDivisor( programAttribute + 3, 1 );
_gl.bindBuffer( _gl.ARRAY_BUFFER, buffer );
_gl.vertexAttribPointer( programAttribute + 0, 4, type, false, 64, 0 );
_gl.vertexAttribPointer( programAttribute + 1, 4, type, false, 64, 16 );
_gl.vertexAttribPointer( programAttribute + 2, 4, type, false, 64, 32 );
_gl.vertexAttribPointer( programAttribute + 3, 4, type, false, 64, 48 );
} else if ( materialDefaultAttributeValues !== undefined ) {
var value = materialDefaultAttributeValues[ name ];
if ( value !== undefined ) {