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94 lines
1.6 KiB
94 lines
1.6 KiB
import Node from './Node.js';
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import VaryingNode from './VaryingNode.js';
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class AttributeNode extends Node {
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constructor( attributeName, nodeType = null ) {
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super( nodeType );
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this._attributeName = attributeName;
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}
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getHash( builder ) {
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return this.getAttributeName( builder );
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}
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getNodeType( builder ) {
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const attributeName = this.getAttributeName( builder );
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let nodeType = super.getNodeType( builder );
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if ( nodeType === null ) {
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if ( builder.hasGeometryAttribute( attributeName ) ) {
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const attribute = builder.geometry.getAttribute( attributeName );
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nodeType = builder.getTypeFromLength( attribute.itemSize );
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} else {
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nodeType = 'float';
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}
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}
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return nodeType;
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}
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setAttributeName( attributeName ) {
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this._attributeName = attributeName;
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return this;
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}
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getAttributeName( /*builder*/ ) {
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return this._attributeName;
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}
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generate( builder ) {
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const attributeName = this.getAttributeName( builder );
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const nodeType = this.getNodeType( builder );
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const geometryAttribute = builder.hasGeometryAttribute( attributeName );
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if ( geometryAttribute === true ) {
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const nodeAttribute = builder.getAttribute( attributeName, nodeType );
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if ( builder.isShaderStage( 'vertex' ) ) {
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return nodeAttribute.name;
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} else {
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const nodeVarying = new VaryingNode( this );
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return nodeVarying.build( builder, nodeAttribute.type );
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}
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} else {
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console.warn( `Attribute "${ attributeName }" not found.` );
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return builder.getConst( nodeType );
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}
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}
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}
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export default AttributeNode;
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