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51 lines
970 B
51 lines
970 B
6 months ago
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import { BufferGeometry, Float32BufferAttribute, Mesh, OrthographicCamera } from 'three';
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// Helper for passes that need to fill the viewport with a single quad.
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const _camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
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// https://github.com/mrdoob/three.js/pull/21358
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class QuadGeometry extends BufferGeometry {
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constructor( flipY = false ) {
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super();
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const uv = flipY === false ? [ 0, - 1, 0, 1, 2, 1 ] : [ 0, 2, 0, 0, 2, 0 ];
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this.setAttribute( 'position', new Float32BufferAttribute( [ - 1, 3, 0, - 1, - 1, 0, 3, - 1, 0 ], 3 ) );
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this.setAttribute( 'uv', new Float32BufferAttribute( uv, 2 ) );
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}
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}
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const _geometry = new QuadGeometry();
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class QuadMesh extends Mesh {
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constructor( material = null ) {
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super( _geometry, material );
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this.camera = _camera;
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}
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renderAsync( renderer ) {
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return renderer.renderAsync( this, _camera );
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}
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render( renderer ) {
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renderer.render( this, _camera );
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}
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}
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export default QuadMesh;
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