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33 lines
606 B
33 lines
606 B
import UniformNode from '../core/UniformNode.js';
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import { NodeUpdateType } from '../core/constants.js';
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class MaxMipLevelNode extends UniformNode {
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constructor( texture ) {
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super( 0 );
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this.texture = texture;
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this.updateType = NodeUpdateType.FRAME;
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}
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update() {
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const images = this.texture.images;
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const image = ( images && images.length > 0 ) ? ( images[ 0 ]?.image || images[ 0 ] ) : this.texture.image;
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if ( image?.width !== undefined ) {
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const { width, height } = image;
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this.value = Math.log2( Math.max( width, height ) );
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}
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}
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}
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export default MaxMipLevelNode;
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