three
Version:
JavaScript 3D library
98 lines (52 loc) • 1.59 kB
JavaScript
import Node from '../core/Node.js';
import { NodeUpdateType } from '../core/constants.js';
import { addMethodChaining, nodeObject } from '../tsl/TSLCore.js';
class ComputeNode extends Node {
static get type() {
return 'ComputeNode';
}
constructor( computeNode, count, workgroupSize = [ 64 ] ) {
super( 'void' );
this.isComputeNode = true;
this.computeNode = computeNode;
this.count = count;
this.workgroupSize = workgroupSize;
this.dispatchCount = 0;
this.version = 1;
this.updateBeforeType = NodeUpdateType.OBJECT;
this.onInitFunction = null;
this.updateDispatchCount();
}
dispose() {
this.dispatchEvent( { type: 'dispose' } );
}
set needsUpdate( value ) {
if ( value === true ) this.version ++;
}
updateDispatchCount() {
const { count, workgroupSize } = this;
let size = workgroupSize[ 0 ];
for ( let i = 1; i < workgroupSize.length; i ++ )
size *= workgroupSize[ i ];
this.dispatchCount = Math.ceil( count / size );
}
onInit( callback ) {
this.onInitFunction = callback;
return this;
}
updateBefore( { renderer } ) {
renderer.compute( this );
}
generate( builder ) {
const { shaderStage } = builder;
if ( shaderStage === 'compute' ) {
const snippet = this.computeNode.build( builder, 'void' );
if ( snippet !== '' ) {
builder.addLineFlowCode( snippet, this );
}
}
}
}
export default ComputeNode;
export const compute = ( node, count, workgroupSize ) => nodeObject( new ComputeNode( nodeObject( node ), count, workgroupSize ) );
addMethodChaining( 'compute', compute );