gx

chenyc

2025-06-12 7b72ac13a83764a662159d4a49b7fffb90476ecb

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/**
 * @license
 * Copyright 2020 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
import { backend_util, env, ScatterNd } from '@tensorflow/tfjs-core';
import { ScatterProgram } from '../scatter_gpu';
import { ScatterPackedProgram } from '../scatter_packed_gpu';
import { reshape } from './Reshape';
export function scatterNd(args) {
    const { inputs, backend, attrs } = args;
    const { indices, updates } = inputs;
    const { shape } = attrs;
    const { sliceRank, numUpdates, sliceSize, strides, outputSize } = backend_util.calculateShapes(updates, indices, shape);
    const flattenShape = [outputSize / sliceSize, sliceSize];
    if (outputSize === 0) {
        return backend.makeTensorInfo(shape, indices.dtype);
    }
    const flattenIndices = reshape({ inputs: { x: indices }, backend, attrs: { shape: [numUpdates, sliceRank] } });
    const flattenX = reshape({ inputs: { x: updates }, backend, attrs: { shape: [numUpdates, sliceSize] } });
    const defaultValue = backend.makeTensorInfo([], 'float32', new Float32Array([0])); // scalar(0)
    let program;
    if (env().getBool('WEBGL_PACK')) {
        program = new ScatterPackedProgram(numUpdates, sliceRank, flattenIndices.shape.length, flattenX.shape.length, strides, flattenShape);
    }
    else {
        program = new ScatterProgram(numUpdates, sliceRank, flattenIndices.shape.length, flattenX.shape.length, strides, flattenShape);
    }
    const res = backend.runWebGLProgram(program, [flattenX, flattenIndices, defaultValue], flattenX.dtype);
    const reshaped = reshape({ inputs: { x: res }, backend, attrs: { shape } });
    backend.disposeIntermediateTensorInfo(flattenIndices);
    backend.disposeIntermediateTensorInfo(flattenX);
    backend.disposeIntermediateTensorInfo(res);
    backend.disposeIntermediateTensorInfo(defaultValue);
    return reshaped;
}
export const scatterNdConfig = {
    kernelName: ScatterNd,
    backendName: 'webgl',
    kernelFunc: scatterNd
};
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