811 lines
16 KiB
JavaScript
811 lines
16 KiB
JavaScript
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import { MathNode, GLSLNodeParser, NodeBuilder, UniformNode, vectorComponents } from '../../../nodes/Nodes.js';
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import NodeUniformBuffer from '../../common/nodes/NodeUniformBuffer.js';
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import NodeUniformsGroup from '../../common/nodes/NodeUniformsGroup.js';
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import { NodeSampledTexture, NodeSampledCubeTexture } from '../../common/nodes/NodeSampledTexture.js';
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import { RedFormat, RGFormat, IntType, DataTexture, RGBFormat, RGBAFormat, FloatType } from 'three';
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const glslMethods = {
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[ MathNode.ATAN2 ]: 'atan',
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textureDimensions: 'textureSize',
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equals: 'equal'
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};
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const precisionLib = {
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low: 'lowp',
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medium: 'mediump',
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high: 'highp'
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};
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const supports = {
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instance: true,
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swizzleAssign: true
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};
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const defaultPrecisions = `
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precision highp float;
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precision highp int;
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precision mediump sampler2DArray;
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precision lowp sampler2DShadow;
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`;
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class GLSLNodeBuilder extends NodeBuilder {
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constructor( object, renderer, scene = null ) {
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super( object, renderer, new GLSLNodeParser(), scene );
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this.uniformGroups = {};
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this.transforms = [];
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}
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getMethod( method ) {
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return glslMethods[ method ] || method;
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}
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getPropertyName( node, shaderStage ) {
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if ( node.isOutputStructVar ) return '';
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return super.getPropertyName( node, shaderStage );
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}
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buildFunctionCode( shaderNode ) {
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const layout = shaderNode.layout;
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const flowData = this.flowShaderNode( shaderNode );
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const parameters = [];
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for ( const input of layout.inputs ) {
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parameters.push( this.getType( input.type ) + ' ' + input.name );
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}
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//
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const code = `${ this.getType( layout.type ) } ${ layout.name }( ${ parameters.join( ', ' ) } ) {
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${ flowData.vars }
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${ flowData.code }
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return ${ flowData.result };
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}`;
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//
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return code;
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}
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setupPBO( storageBufferNode ) {
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const attribute = storageBufferNode.value;
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if ( attribute.pbo === undefined ) {
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const originalArray = attribute.array;
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const numElements = attribute.count * attribute.itemSize;
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const { itemSize } = attribute;
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let format = RedFormat;
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if ( itemSize === 2 ) {
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format = RGFormat;
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} else if ( itemSize === 3 ) {
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format = RGBFormat;
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} else if ( itemSize === 4 ) {
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format = RGBAFormat;
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}
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const width = Math.pow( 2, Math.ceil( Math.log2( Math.sqrt( numElements / itemSize ) ) ) );
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let height = Math.ceil( ( numElements / itemSize ) / width );
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if ( width * height * itemSize < numElements ) height ++; // Ensure enough space
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const newSize = width * height * itemSize;
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const newArray = new Float32Array( newSize );
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newArray.set( originalArray, 0 );
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attribute.array = newArray;
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const pboTexture = new DataTexture( attribute.array, width, height, format, FloatType );
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pboTexture.needsUpdate = true;
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pboTexture.isPBOTexture = true;
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const pbo = new UniformNode( pboTexture );
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pbo.setPrecision( 'high' );
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attribute.pboNode = pbo;
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attribute.pbo = pbo.value;
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this.getUniformFromNode( attribute.pboNode, 'texture', this.shaderStage, this.context.label );
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}
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}
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generatePBO( storageArrayElementNode ) {
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const { node, indexNode } = storageArrayElementNode;
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const attribute = node.value;
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if ( this.renderer.backend.has( attribute ) ) {
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const attributeData = this.renderer.backend.get( attribute );
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attributeData.pbo = attribute.pbo;
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}
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const nodeUniform = this.getUniformFromNode( attribute.pboNode, 'texture', this.shaderStage, this.context.label );
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const textureName = this.getPropertyName( nodeUniform );
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indexNode.increaseUsage( this ); // force cache generate to be used as index in x,y
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const indexSnippet = indexNode.build( this, 'uint' );
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const elementNodeData = this.getDataFromNode( storageArrayElementNode );
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let propertyName = elementNodeData.propertyName;
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if ( propertyName === undefined ) {
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// property element
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const nodeVar = this.getVarFromNode( storageArrayElementNode );
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propertyName = this.getPropertyName( nodeVar );
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// property size
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const bufferNodeData = this.getDataFromNode( node );
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let propertySizeName = bufferNodeData.propertySizeName;
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if ( propertySizeName === undefined ) {
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propertySizeName = propertyName + 'Size';
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this.getVarFromNode( node, propertySizeName, 'uint' );
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this.addLineFlowCode( `${ propertySizeName } = uint( textureSize( ${ textureName }, 0 ).x )` );
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bufferNodeData.propertySizeName = propertySizeName;
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}
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//
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const { itemSize } = attribute;
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const channel = '.' + vectorComponents.join( '' ).slice( 0, itemSize );
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const uvSnippet = `ivec2(${indexSnippet} % ${ propertySizeName }, ${indexSnippet} / ${ propertySizeName })`;
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const snippet = this.generateTextureLoad( null, textureName, uvSnippet, null, '0' );
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//
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this.addLineFlowCode( `${ propertyName } = ${ snippet + channel }` );
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elementNodeData.propertyName = propertyName;
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}
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return propertyName;
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}
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generateTextureLoad( texture, textureProperty, uvIndexSnippet, depthSnippet, levelSnippet = '0' ) {
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if ( depthSnippet ) {
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return `texelFetch( ${ textureProperty }, ivec3( ${ uvIndexSnippet }, ${ depthSnippet } ), ${ levelSnippet } )`;
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} else {
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return `texelFetch( ${ textureProperty }, ${ uvIndexSnippet }, ${ levelSnippet } )`;
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}
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}
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generateTexture( texture, textureProperty, uvSnippet, depthSnippet ) {
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if ( texture.isDepthTexture ) {
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return `texture( ${ textureProperty }, ${ uvSnippet } ).x`;
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} else {
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if ( depthSnippet ) uvSnippet = `vec3( ${ uvSnippet }, ${ depthSnippet } )`;
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return `texture( ${ textureProperty }, ${ uvSnippet } )`;
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}
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}
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generateTextureLevel( texture, textureProperty, uvSnippet, levelSnippet ) {
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return `textureLod( ${ textureProperty }, ${ uvSnippet }, ${ levelSnippet } )`;
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}
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generateTextureGrad( texture, textureProperty, uvSnippet, gradSnippet ) {
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return `textureGrad( ${ textureProperty }, ${ uvSnippet }, ${ gradSnippet[ 0 ] }, ${ gradSnippet[ 1 ] } )`;
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}
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generateTextureCompare( texture, textureProperty, uvSnippet, compareSnippet, depthSnippet, shaderStage = this.shaderStage ) {
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if ( shaderStage === 'fragment' ) {
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return `texture( ${ textureProperty }, vec3( ${ uvSnippet }, ${ compareSnippet } ) )`;
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} else {
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console.error( `WebGPURenderer: THREE.DepthTexture.compareFunction() does not support ${ shaderStage } shader.` );
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}
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}
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getVars( shaderStage ) {
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const snippets = [];
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const vars = this.vars[ shaderStage ];
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if ( vars !== undefined ) {
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for ( const variable of vars ) {
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if ( variable.isOutputStructVar ) continue;
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snippets.push( `${ this.getVar( variable.type, variable.name ) };` );
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}
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}
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return snippets.join( '\n\t' );
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}
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getUniforms( shaderStage ) {
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const uniforms = this.uniforms[ shaderStage ];
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const bindingSnippets = [];
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const uniformGroups = {};
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for ( const uniform of uniforms ) {
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let snippet = null;
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let group = false;
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if ( uniform.type === 'texture' ) {
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const texture = uniform.node.value;
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if ( texture.compareFunction ) {
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snippet = `sampler2DShadow ${ uniform.name };`;
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} else if ( texture.isDataArrayTexture === true ) {
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snippet = `sampler2DArray ${ uniform.name };`;
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} else {
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snippet = `sampler2D ${ uniform.name };`;
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}
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} else if ( uniform.type === 'cubeTexture' ) {
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snippet = `samplerCube ${ uniform.name };`;
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} else if ( uniform.type === 'buffer' ) {
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const bufferNode = uniform.node;
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const bufferType = this.getType( bufferNode.bufferType );
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const bufferCount = bufferNode.bufferCount;
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const bufferCountSnippet = bufferCount > 0 ? bufferCount : '';
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snippet = `${bufferNode.name} {\n\t${ bufferType } ${ uniform.name }[${ bufferCountSnippet }];\n};\n`;
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} else {
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const vectorType = this.getVectorType( uniform.type );
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snippet = `${vectorType} ${uniform.name};`;
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group = true;
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}
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const precision = uniform.node.precision;
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if ( precision !== null ) {
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snippet = precisionLib[ precision ] + ' ' + snippet;
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}
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if ( group ) {
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snippet = '\t' + snippet;
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const groupName = uniform.groupNode.name;
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const groupSnippets = uniformGroups[ groupName ] || ( uniformGroups[ groupName ] = [] );
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groupSnippets.push( snippet );
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} else {
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snippet = 'uniform ' + snippet;
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bindingSnippets.push( snippet );
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}
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}
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let output = '';
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for ( const name in uniformGroups ) {
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const groupSnippets = uniformGroups[ name ];
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output += this._getGLSLUniformStruct( shaderStage + '_' + name, groupSnippets.join( '\n' ) ) + '\n';
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}
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output += bindingSnippets.join( '\n' );
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return output;
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}
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getTypeFromAttribute( attribute ) {
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let nodeType = super.getTypeFromAttribute( attribute );
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if ( /^[iu]/.test( nodeType ) && attribute.gpuType !== IntType ) {
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let dataAttribute = attribute;
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if ( attribute.isInterleavedBufferAttribute ) dataAttribute = attribute.data;
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const array = dataAttribute.array;
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if ( ( array instanceof Uint32Array || array instanceof Int32Array || array instanceof Uint16Array || array instanceof Int16Array ) === false ) {
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nodeType = nodeType.slice( 1 );
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}
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}
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return nodeType;
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}
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getAttributes( shaderStage ) {
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let snippet = '';
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if ( shaderStage === 'vertex' || shaderStage === 'compute' ) {
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const attributes = this.getAttributesArray();
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let location = 0;
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for ( const attribute of attributes ) {
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snippet += `layout( location = ${ location ++ } ) in ${ attribute.type } ${ attribute.name };\n`;
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}
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}
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return snippet;
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}
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getStructMembers( struct ) {
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const snippets = [];
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const members = struct.getMemberTypes();
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|
|
for ( let i = 0; i < members.length; i ++ ) {
|
||
|
|
|
||
|
|
const member = members[ i ];
|
||
|
|
snippets.push( `layout( location = ${i} ) out ${ member} m${i};` );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return snippets.join( '\n' );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getStructs( shaderStage ) {
|
||
|
|
|
||
|
|
const snippets = [];
|
||
|
|
const structs = this.structs[ shaderStage ];
|
||
|
|
|
||
|
|
if ( structs.length === 0 ) {
|
||
|
|
|
||
|
|
return 'layout( location = 0 ) out vec4 fragColor;\n';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
for ( let index = 0, length = structs.length; index < length; index ++ ) {
|
||
|
|
|
||
|
|
const struct = structs[ index ];
|
||
|
|
|
||
|
|
let snippet = '\n';
|
||
|
|
snippet += this.getStructMembers( struct );
|
||
|
|
snippet += '\n';
|
||
|
|
|
||
|
|
snippets.push( snippet );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return snippets.join( '\n\n' );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getVaryings( shaderStage ) {
|
||
|
|
|
||
|
|
let snippet = '';
|
||
|
|
|
||
|
|
const varyings = this.varyings;
|
||
|
|
|
||
|
|
if ( shaderStage === 'vertex' || shaderStage === 'compute' ) {
|
||
|
|
|
||
|
|
for ( const varying of varyings ) {
|
||
|
|
|
||
|
|
if ( shaderStage === 'compute' ) varying.needsInterpolation = true;
|
||
|
|
const type = varying.type;
|
||
|
|
const flat = type === 'int' || type === 'uint' ? 'flat ' : '';
|
||
|
|
|
||
|
|
snippet += `${flat}${varying.needsInterpolation ? 'out' : '/*out*/'} ${type} ${varying.name};\n`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} else if ( shaderStage === 'fragment' ) {
|
||
|
|
|
||
|
|
for ( const varying of varyings ) {
|
||
|
|
|
||
|
|
if ( varying.needsInterpolation ) {
|
||
|
|
|
||
|
|
const type = varying.type;
|
||
|
|
const flat = type === 'int' || type === 'uint' ? 'flat ' : '';
|
||
|
|
|
||
|
|
snippet += `${flat}in ${type} ${varying.name};\n`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return snippet;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getVertexIndex() {
|
||
|
|
|
||
|
|
return 'uint( gl_VertexID )';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getInstanceIndex() {
|
||
|
|
|
||
|
|
return 'uint( gl_InstanceID )';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getFrontFacing() {
|
||
|
|
|
||
|
|
return 'gl_FrontFacing';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getFragCoord() {
|
||
|
|
|
||
|
|
return 'gl_FragCoord';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getFragDepth() {
|
||
|
|
|
||
|
|
return 'gl_FragDepth';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
isAvailable( name ) {
|
||
|
|
|
||
|
|
return supports[ name ] === true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
isFlipY() {
|
||
|
|
|
||
|
|
return true;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
registerTransform( varyingName, attributeNode ) {
|
||
|
|
|
||
|
|
this.transforms.push( { varyingName, attributeNode } );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getTransforms( /* shaderStage */ ) {
|
||
|
|
|
||
|
|
const transforms = this.transforms;
|
||
|
|
|
||
|
|
let snippet = '';
|
||
|
|
|
||
|
|
for ( let i = 0; i < transforms.length; i ++ ) {
|
||
|
|
|
||
|
|
const transform = transforms[ i ];
|
||
|
|
|
||
|
|
const attributeName = this.getPropertyName( transform.attributeNode );
|
||
|
|
|
||
|
|
snippet += `${ transform.varyingName } = ${ attributeName };\n\t`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return snippet;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
_getGLSLUniformStruct( name, vars ) {
|
||
|
|
|
||
|
|
return `
|
||
|
|
layout( std140 ) uniform ${name} {
|
||
|
|
${vars}
|
||
|
|
};`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
_getGLSLVertexCode( shaderData ) {
|
||
|
|
|
||
|
|
return `#version 300 es
|
||
|
|
|
||
|
|
${ this.getSignature() }
|
||
|
|
|
||
|
|
// precision
|
||
|
|
${ defaultPrecisions }
|
||
|
|
|
||
|
|
// uniforms
|
||
|
|
${shaderData.uniforms}
|
||
|
|
|
||
|
|
// varyings
|
||
|
|
${shaderData.varyings}
|
||
|
|
|
||
|
|
// attributes
|
||
|
|
${shaderData.attributes}
|
||
|
|
|
||
|
|
// codes
|
||
|
|
${shaderData.codes}
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
// vars
|
||
|
|
${shaderData.vars}
|
||
|
|
|
||
|
|
// transforms
|
||
|
|
${shaderData.transforms}
|
||
|
|
|
||
|
|
// flow
|
||
|
|
${shaderData.flow}
|
||
|
|
|
||
|
|
gl_PointSize = 1.0;
|
||
|
|
|
||
|
|
}
|
||
|
|
`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
_getGLSLFragmentCode( shaderData ) {
|
||
|
|
|
||
|
|
return `#version 300 es
|
||
|
|
|
||
|
|
${ this.getSignature() }
|
||
|
|
|
||
|
|
// precision
|
||
|
|
${ defaultPrecisions }
|
||
|
|
|
||
|
|
// uniforms
|
||
|
|
${shaderData.uniforms}
|
||
|
|
|
||
|
|
// varyings
|
||
|
|
${shaderData.varyings}
|
||
|
|
|
||
|
|
// codes
|
||
|
|
${shaderData.codes}
|
||
|
|
|
||
|
|
${shaderData.structs}
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
// vars
|
||
|
|
${shaderData.vars}
|
||
|
|
|
||
|
|
// flow
|
||
|
|
${shaderData.flow}
|
||
|
|
|
||
|
|
}
|
||
|
|
`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
buildCode() {
|
||
|
|
|
||
|
|
const shadersData = this.material !== null ? { fragment: {}, vertex: {} } : { compute: {} };
|
||
|
|
|
||
|
|
for ( const shaderStage in shadersData ) {
|
||
|
|
|
||
|
|
let flow = '// code\n\n';
|
||
|
|
flow += this.flowCode[ shaderStage ];
|
||
|
|
|
||
|
|
const flowNodes = this.flowNodes[ shaderStage ];
|
||
|
|
const mainNode = flowNodes[ flowNodes.length - 1 ];
|
||
|
|
|
||
|
|
for ( const node of flowNodes ) {
|
||
|
|
|
||
|
|
const flowSlotData = this.getFlowData( node/*, shaderStage*/ );
|
||
|
|
const slotName = node.name;
|
||
|
|
|
||
|
|
if ( slotName ) {
|
||
|
|
|
||
|
|
if ( flow.length > 0 ) flow += '\n';
|
||
|
|
|
||
|
|
flow += `\t// flow -> ${ slotName }\n\t`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
flow += `${ flowSlotData.code }\n\t`;
|
||
|
|
|
||
|
|
if ( node === mainNode && shaderStage !== 'compute' ) {
|
||
|
|
|
||
|
|
flow += '// result\n\t';
|
||
|
|
|
||
|
|
if ( shaderStage === 'vertex' ) {
|
||
|
|
|
||
|
|
flow += 'gl_Position = ';
|
||
|
|
flow += `${ flowSlotData.result };`;
|
||
|
|
|
||
|
|
} else if ( shaderStage === 'fragment' ) {
|
||
|
|
|
||
|
|
if ( ! node.outputNode.isOutputStructNode ) {
|
||
|
|
|
||
|
|
flow += 'fragColor = ';
|
||
|
|
flow += `${ flowSlotData.result };`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const stageData = shadersData[ shaderStage ];
|
||
|
|
|
||
|
|
stageData.uniforms = this.getUniforms( shaderStage );
|
||
|
|
stageData.attributes = this.getAttributes( shaderStage );
|
||
|
|
stageData.varyings = this.getVaryings( shaderStage );
|
||
|
|
stageData.vars = this.getVars( shaderStage );
|
||
|
|
stageData.structs = this.getStructs( shaderStage );
|
||
|
|
stageData.codes = this.getCodes( shaderStage );
|
||
|
|
stageData.transforms = this.getTransforms( shaderStage );
|
||
|
|
stageData.flow = flow;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( this.material !== null ) {
|
||
|
|
|
||
|
|
this.vertexShader = this._getGLSLVertexCode( shadersData.vertex );
|
||
|
|
this.fragmentShader = this._getGLSLFragmentCode( shadersData.fragment );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
this.computeShader = this._getGLSLVertexCode( shadersData.compute );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getUniformFromNode( node, type, shaderStage, name = null ) {
|
||
|
|
|
||
|
|
const uniformNode = super.getUniformFromNode( node, type, shaderStage, name );
|
||
|
|
const nodeData = this.getDataFromNode( node, shaderStage, this.globalCache );
|
||
|
|
|
||
|
|
let uniformGPU = nodeData.uniformGPU;
|
||
|
|
|
||
|
|
if ( uniformGPU === undefined ) {
|
||
|
|
|
||
|
|
if ( type === 'texture' ) {
|
||
|
|
|
||
|
|
uniformGPU = new NodeSampledTexture( uniformNode.name, uniformNode.node );
|
||
|
|
|
||
|
|
this.bindings[ shaderStage ].push( uniformGPU );
|
||
|
|
|
||
|
|
} else if ( type === 'cubeTexture' ) {
|
||
|
|
|
||
|
|
uniformGPU = new NodeSampledCubeTexture( uniformNode.name, uniformNode.node );
|
||
|
|
|
||
|
|
this.bindings[ shaderStage ].push( uniformGPU );
|
||
|
|
|
||
|
|
} else if ( type === 'buffer' ) {
|
||
|
|
|
||
|
|
node.name = `NodeBuffer_${ node.id }`;
|
||
|
|
uniformNode.name = `buffer${ node.id }`;
|
||
|
|
|
||
|
|
const buffer = new NodeUniformBuffer( node );
|
||
|
|
buffer.name = node.name;
|
||
|
|
|
||
|
|
this.bindings[ shaderStage ].push( buffer );
|
||
|
|
|
||
|
|
uniformGPU = buffer;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
const group = node.groupNode;
|
||
|
|
const groupName = group.name;
|
||
|
|
|
||
|
|
const uniformsStage = this.uniformGroups[ shaderStage ] || ( this.uniformGroups[ shaderStage ] = {} );
|
||
|
|
|
||
|
|
let uniformsGroup = uniformsStage[ groupName ];
|
||
|
|
|
||
|
|
if ( uniformsGroup === undefined ) {
|
||
|
|
|
||
|
|
uniformsGroup = new NodeUniformsGroup( shaderStage + '_' + groupName, group );
|
||
|
|
//uniformsGroup.setVisibility( gpuShaderStageLib[ shaderStage ] );
|
||
|
|
|
||
|
|
uniformsStage[ groupName ] = uniformsGroup;
|
||
|
|
|
||
|
|
this.bindings[ shaderStage ].push( uniformsGroup );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
uniformGPU = this.getNodeUniform( uniformNode, type );
|
||
|
|
|
||
|
|
uniformsGroup.addUniform( uniformGPU );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
nodeData.uniformGPU = uniformGPU;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return uniformNode;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
export default GLSLNodeBuilder;
|