WebGPUBackend relies on warnOnce from src/utils.js

src/utils.js

@@ -0,0 +1,120 @@
+function arrayMin( array ) {
+
+	if ( array.length === 0 ) return Infinity;
+
+	let min = array[ 0 ];
+
+	for ( let i = 1, l = array.length; i < l; ++ i ) {
+
+		if ( array[ i ] < min ) min = array[ i ];
+
+	}
+
+	return min;
+
+}
+
+function arrayMax( array ) {
+
+	if ( array.length === 0 ) return - Infinity;
+
+	let max = array[ 0 ];
+
+	for ( let i = 1, l = array.length; i < l; ++ i ) {
+
+		if ( array[ i ] > max ) max = array[ i ];
+
+	}
+
+	return max;
+
+}
+
+function arrayNeedsUint32( array ) {
+
+	// assumes larger values usually on last
+
+	for ( let i = array.length - 1; i >= 0; -- i ) {
+
+		if ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565
+
+	}
+
+	return false;
+
+}
+
+const TYPED_ARRAYS = {
+	Int8Array: Int8Array,
+	Uint8Array: Uint8Array,
+	Uint8ClampedArray: Uint8ClampedArray,
+	Int16Array: Int16Array,
+	Uint16Array: Uint16Array,
+	Int32Array: Int32Array,
+	Uint32Array: Uint32Array,
+	Float32Array: Float32Array,
+	Float64Array: Float64Array
+};
+
+function getTypedArray( type, buffer ) {
+
+	return new TYPED_ARRAYS[ type ]( buffer );
+
+}
+
+function createElementNS( name ) {
+
+	return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );
+
+}
+
+function createCanvasElement() {
+
+	const canvas = createElementNS( 'canvas' );
+	canvas.style.display = 'block';
+	return canvas;
+
+}
+
+const _cache = {};
+
+function warnOnce( message ) {
+
+	if ( message in _cache ) return;
+
+	_cache[ message ] = true;
+
+	console.warn( message );
+
+}
+
+function probeAsync( gl, sync, interval ) {
+
+	return new Promise( function ( resolve, reject ) {
+
+		function probe() {
+
+			switch ( gl.clientWaitSync( sync, gl.SYNC_FLUSH_COMMANDS_BIT, 0 ) ) {
+
+				case gl.WAIT_FAILED:
+					reject();
+					break;
+
+				case gl.TIMEOUT_EXPIRED:
+					setTimeout( probe, interval );
+					break;
+
+				default:
+					resolve();
+
+			}
+
+		}
+
+		setTimeout( probe, interval );
+
+	} );
+
+}
+
+export { arrayMin, arrayMax, arrayNeedsUint32, getTypedArray, createElementNS, createCanvasElement, warnOnce, probeAsync };