86 lines
1.5 KiB
JavaScript
86 lines
1.5 KiB
JavaScript
import Node, { addNodeClass } from '../core/Node.js';
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import { NodeUpdateType } from '../core/constants.js';
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import { addNodeElement, nodeObject } from '../shadernode/ShaderNode.js';
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class ComputeNode extends Node {
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constructor( computeNode, count, workgroupSize = [ 64 ] ) {
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super( 'void' );
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this.isComputeNode = true;
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this.computeNode = computeNode;
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this.count = count;
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this.workgroupSize = workgroupSize;
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this.dispatchCount = 0;
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this.version = 1;
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this.updateBeforeType = NodeUpdateType.OBJECT;
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this.updateDispatchCount();
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}
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dispose() {
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this.dispatchEvent( { type: 'dispose' } );
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}
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set needsUpdate( value ) {
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if ( value === true ) this.version ++;
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}
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updateDispatchCount() {
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const { count, workgroupSize } = this;
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let size = workgroupSize[ 0 ];
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for ( let i = 1; i < workgroupSize.length; i ++ )
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size *= workgroupSize[ i ];
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this.dispatchCount = Math.ceil( count / size );
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}
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onInit() { }
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updateBefore( { renderer } ) {
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renderer.compute( this );
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}
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generate( builder ) {
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const { shaderStage } = builder;
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if ( shaderStage === 'compute' ) {
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const snippet = this.computeNode.build( builder, 'void' );
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if ( snippet !== '' ) {
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builder.addLineFlowCode( snippet );
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}
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}
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}
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}
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export default ComputeNode;
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export const compute = ( node, count, workgroupSize ) => nodeObject( new ComputeNode( nodeObject( node ), count, workgroupSize ) );
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addNodeElement( 'compute', compute );
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addNodeClass( 'ComputeNode', ComputeNode );
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