614 lines
13 KiB
JavaScript
614 lines
13 KiB
JavaScript
import { Material, ShaderMaterial } from 'three';
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import { getNodeChildren, getCacheKey } from '../core/NodeUtils.js';
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import { attribute } from '../core/AttributeNode.js';
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import { output, diffuseColor, varyingProperty } from '../core/PropertyNode.js';
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import { materialAlphaTest, materialColor, materialOpacity, materialEmissive, materialNormal } from '../accessors/MaterialNode.js';
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import { modelViewProjection } from '../accessors/ModelViewProjectionNode.js';
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import { transformedNormalView } from '../accessors/NormalNode.js';
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import { instance } from '../accessors/InstanceNode.js';
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import { batch } from '../accessors/BatchNode.js';
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import { materialReference } from '../accessors/MaterialReferenceNode.js';
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import { positionLocal, positionView } from '../accessors/PositionNode.js';
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import { skinningReference } from '../accessors/SkinningNode.js';
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import { morphReference } from '../accessors/MorphNode.js';
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import { texture } from '../accessors/TextureNode.js';
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import { cubeTexture } from '../accessors/CubeTextureNode.js';
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import { lightsNode } from '../lighting/LightsNode.js';
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import { mix } from '../math/MathNode.js';
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import { float, vec3, vec4 } from '../shadernode/ShaderNode.js';
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import AONode from '../lighting/AONode.js';
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import { lightingContext } from '../lighting/LightingContextNode.js';
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import EnvironmentNode from '../lighting/EnvironmentNode.js';
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import IrradianceNode from '../lighting/IrradianceNode.js';
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import { depthPixel } from '../display/ViewportDepthNode.js';
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import { cameraLogDepth } from '../accessors/CameraNode.js';
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import { clipping, clippingAlpha } from '../accessors/ClippingNode.js';
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import { faceDirection } from '../display/FrontFacingNode.js';
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const NodeMaterials = new Map();
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class NodeMaterial extends ShaderMaterial {
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constructor() {
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super();
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this.isNodeMaterial = true;
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this.type = this.constructor.type;
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this.forceSinglePass = false;
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this.fog = true;
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this.lights = true;
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this.normals = true;
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this.lightsNode = null;
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this.envNode = null;
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this.aoNode = null;
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this.colorNode = null;
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this.normalNode = null;
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this.opacityNode = null;
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this.backdropNode = null;
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this.backdropAlphaNode = null;
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this.alphaTestNode = null;
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this.positionNode = null;
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this.depthNode = null;
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this.shadowNode = null;
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this.shadowPositionNode = null;
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this.outputNode = null;
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this.fragmentNode = null;
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this.vertexNode = null;
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}
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customProgramCacheKey() {
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return this.type + getCacheKey( this );
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}
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build( builder ) {
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this.setup( builder );
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}
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setup( builder ) {
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// < VERTEX STAGE >
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builder.addStack();
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builder.stack.outputNode = this.vertexNode || this.setupPosition( builder );
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builder.addFlow( 'vertex', builder.removeStack() );
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// < FRAGMENT STAGE >
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builder.addStack();
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let resultNode;
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const clippingNode = this.setupClipping( builder );
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if ( this.depthWrite === true ) this.setupDepth( builder );
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if ( this.fragmentNode === null ) {
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if ( this.normals === true ) this.setupNormal( builder );
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this.setupDiffuseColor( builder );
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this.setupVariants( builder );
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const outgoingLightNode = this.setupLighting( builder );
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if ( clippingNode !== null ) builder.stack.add( clippingNode );
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// force unsigned floats - useful for RenderTargets
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const basicOutput = vec4( outgoingLightNode, diffuseColor.a ).max( 0 );
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resultNode = this.setupOutput( builder, basicOutput );
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// OUTPUT NODE
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output.assign( resultNode );
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//
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if ( this.outputNode !== null ) resultNode = this.outputNode;
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} else {
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let fragmentNode = this.fragmentNode;
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if ( fragmentNode.isOutputStructNode !== true ) {
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fragmentNode = vec4( fragmentNode );
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}
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resultNode = this.setupOutput( builder, fragmentNode );
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}
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builder.stack.outputNode = resultNode;
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builder.addFlow( 'fragment', builder.removeStack() );
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}
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setupClipping( builder ) {
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if ( builder.clippingContext === null ) return null;
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const { globalClippingCount, localClippingCount } = builder.clippingContext;
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let result = null;
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if ( globalClippingCount || localClippingCount ) {
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if ( this.alphaToCoverage ) {
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// to be added to flow when the color/alpha value has been determined
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result = clippingAlpha();
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} else {
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builder.stack.add( clipping() );
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}
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}
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return result;
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}
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setupDepth( builder ) {
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const { renderer } = builder;
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// Depth
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let depthNode = this.depthNode;
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if ( depthNode === null && renderer.logarithmicDepthBuffer === true ) {
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const fragDepth = modelViewProjection().w.add( 1 );
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depthNode = fragDepth.log2().mul( cameraLogDepth ).mul( 0.5 );
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}
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if ( depthNode !== null ) {
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depthPixel.assign( depthNode ).append();
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}
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}
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setupPosition( builder ) {
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const { object } = builder;
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const geometry = object.geometry;
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builder.addStack();
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// Vertex
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if ( geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color ) {
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morphReference( object ).append();
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}
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if ( object.isSkinnedMesh === true ) {
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skinningReference( object ).append();
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}
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if ( object.isBatchedMesh ) {
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batch( object ).append();
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}
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if ( ( object.instanceMatrix && object.instanceMatrix.isInstancedBufferAttribute === true ) && builder.isAvailable( 'instance' ) === true ) {
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instance( object ).append();
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}
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if ( this.positionNode !== null ) {
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positionLocal.assign( this.positionNode );
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}
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const mvp = modelViewProjection();
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builder.context.vertex = builder.removeStack();
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builder.context.mvp = mvp;
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return mvp;
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}
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setupDiffuseColor( { object, geometry } ) {
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let colorNode = this.colorNode ? vec4( this.colorNode ) : materialColor;
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// VERTEX COLORS
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if ( this.vertexColors === true && geometry.hasAttribute( 'color' ) ) {
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colorNode = vec4( colorNode.xyz.mul( attribute( 'color', 'vec3' ) ), colorNode.a );
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}
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// Instanced colors
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if ( object.instanceColor ) {
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const instanceColor = varyingProperty( 'vec3', 'vInstanceColor' );
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colorNode = instanceColor.mul( colorNode );
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}
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// COLOR
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diffuseColor.assign( colorNode );
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// OPACITY
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const opacityNode = this.opacityNode ? float( this.opacityNode ) : materialOpacity;
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diffuseColor.a.assign( diffuseColor.a.mul( opacityNode ) );
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// ALPHA TEST
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if ( this.alphaTestNode !== null || this.alphaTest > 0 ) {
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const alphaTestNode = this.alphaTestNode !== null ? float( this.alphaTestNode ) : materialAlphaTest;
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diffuseColor.a.lessThanEqual( alphaTestNode ).discard();
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}
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}
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setupVariants( /*builder*/ ) {
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// Interface function.
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}
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setupNormal() {
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// NORMAL VIEW
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if ( this.flatShading === true ) {
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const normalNode = positionView.dFdx().cross( positionView.dFdy() ).normalize();
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transformedNormalView.assign( normalNode.mul( faceDirection ) );
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} else {
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const normalNode = this.normalNode ? vec3( this.normalNode ) : materialNormal;
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transformedNormalView.assign( normalNode.mul( faceDirection ) );
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}
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}
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getEnvNode( builder ) {
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let node = null;
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if ( this.envNode ) {
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node = this.envNode;
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} else if ( this.envMap ) {
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node = this.envMap.isCubeTexture ? cubeTexture( this.envMap ) : texture( this.envMap );
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} else if ( builder.environmentNode ) {
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node = builder.environmentNode;
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}
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return node;
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}
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setupLights( builder ) {
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const envNode = this.getEnvNode( builder );
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//
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const materialLightsNode = [];
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if ( envNode ) {
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materialLightsNode.push( new EnvironmentNode( envNode ) );
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}
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if ( builder.material.lightMap ) {
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materialLightsNode.push( new IrradianceNode( materialReference( 'lightMap', 'texture' ) ) );
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}
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if ( this.aoNode !== null || builder.material.aoMap ) {
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const aoNode = this.aoNode !== null ? this.aoNode : texture( builder.material.aoMap );
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materialLightsNode.push( new AONode( aoNode ) );
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}
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let lightsN = this.lightsNode || builder.lightsNode;
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if ( materialLightsNode.length > 0 ) {
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lightsN = lightsNode( [ ...lightsN.lightNodes, ...materialLightsNode ] );
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}
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return lightsN;
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}
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setupLightingModel( /*builder*/ ) {
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// Interface function.
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}
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setupLighting( builder ) {
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const { material } = builder;
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const { backdropNode, backdropAlphaNode, emissiveNode } = this;
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// OUTGOING LIGHT
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const lights = this.lights === true || this.lightsNode !== null;
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const lightsNode = lights ? this.setupLights( builder ) : null;
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let outgoingLightNode = diffuseColor.rgb;
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if ( lightsNode && lightsNode.hasLight !== false ) {
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const lightingModel = this.setupLightingModel( builder );
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outgoingLightNode = lightingContext( lightsNode, lightingModel, backdropNode, backdropAlphaNode );
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} else if ( backdropNode !== null ) {
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outgoingLightNode = vec3( backdropAlphaNode !== null ? mix( outgoingLightNode, backdropNode, backdropAlphaNode ) : backdropNode );
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}
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// EMISSIVE
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if ( ( emissiveNode && emissiveNode.isNode === true ) || ( material.emissive && material.emissive.isColor === true ) ) {
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outgoingLightNode = outgoingLightNode.add( vec3( emissiveNode ? emissiveNode : materialEmissive ) );
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}
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return outgoingLightNode;
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}
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setupOutput( builder, outputNode ) {
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// FOG
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const fogNode = builder.fogNode;
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if ( fogNode ) outputNode = vec4( fogNode.mix( outputNode.rgb, fogNode.colorNode ), outputNode.a );
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return outputNode;
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}
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setDefaultValues( material ) {
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// This approach is to reuse the native refreshUniforms*
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// and turn available the use of features like transmission and environment in core
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for ( const property in material ) {
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const value = material[ property ];
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if ( this[ property ] === undefined ) {
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this[ property ] = value;
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if ( value && value.clone ) this[ property ] = value.clone();
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}
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}
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Object.assign( this.defines, material.defines );
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const descriptors = Object.getOwnPropertyDescriptors( material.constructor.prototype );
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for ( const key in descriptors ) {
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if ( Object.getOwnPropertyDescriptor( this.constructor.prototype, key ) === undefined &&
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descriptors[ key ].get !== undefined ) {
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Object.defineProperty( this.constructor.prototype, key, descriptors[ key ] );
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}
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}
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}
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toJSON( meta ) {
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const isRoot = ( meta === undefined || typeof meta === 'string' );
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if ( isRoot ) {
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meta = {
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textures: {},
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images: {},
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nodes: {}
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};
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}
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const data = Material.prototype.toJSON.call( this, meta );
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const nodeChildren = getNodeChildren( this );
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data.inputNodes = {};
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for ( const { property, childNode } of nodeChildren ) {
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data.inputNodes[ property ] = childNode.toJSON( meta ).uuid;
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}
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// TODO: Copied from Object3D.toJSON
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function extractFromCache( cache ) {
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const values = [];
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for ( const key in cache ) {
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const data = cache[ key ];
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delete data.metadata;
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values.push( data );
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}
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return values;
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}
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if ( isRoot ) {
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const textures = extractFromCache( meta.textures );
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const images = extractFromCache( meta.images );
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const nodes = extractFromCache( meta.nodes );
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if ( textures.length > 0 ) data.textures = textures;
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if ( images.length > 0 ) data.images = images;
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if ( nodes.length > 0 ) data.nodes = nodes;
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}
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return data;
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}
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copy( source ) {
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this.lightsNode = source.lightsNode;
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this.envNode = source.envNode;
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this.colorNode = source.colorNode;
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this.normalNode = source.normalNode;
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this.opacityNode = source.opacityNode;
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this.backdropNode = source.backdropNode;
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this.backdropAlphaNode = source.backdropAlphaNode;
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this.alphaTestNode = source.alphaTestNode;
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this.positionNode = source.positionNode;
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this.depthNode = source.depthNode;
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this.shadowNode = source.shadowNode;
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this.shadowPositionNode = source.shadowPositionNode;
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this.outputNode = source.outputNode;
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this.fragmentNode = source.fragmentNode;
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this.vertexNode = source.vertexNode;
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return super.copy( source );
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}
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static fromMaterial( material ) {
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if ( material.isNodeMaterial === true ) { // is already a node material
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return material;
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}
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const type = material.type.replace( 'Material', 'NodeMaterial' );
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const nodeMaterial = createNodeMaterialFromType( type );
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if ( nodeMaterial === undefined ) {
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throw new Error( `NodeMaterial: Material "${ material.type }" is not compatible.` );
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}
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for ( const key in material ) {
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nodeMaterial[ key ] = material[ key ];
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}
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return nodeMaterial;
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}
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}
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export default NodeMaterial;
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export function addNodeMaterial( type, nodeMaterial ) {
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if ( typeof nodeMaterial !== 'function' || ! type ) throw new Error( `Node material ${ type } is not a class` );
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if ( NodeMaterials.has( type ) ) {
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console.warn( `Redefinition of node material ${ type }` );
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return;
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}
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NodeMaterials.set( type, nodeMaterial );
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nodeMaterial.type = type;
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}
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export function createNodeMaterialFromType( type ) {
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const Material = NodeMaterials.get( type );
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if ( Material !== undefined ) {
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return new Material();
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}
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}
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addNodeMaterial( 'NodeMaterial', NodeMaterial );
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