Method setupArguments

src/backend/web-gl/kernel.js:349–419

(args)

  }

  setupArguments(args) {
    this.kernelArguments = [];
    this.argumentTextureCount = 0;
    const needsArgumentTypes = this.argumentTypes === null;
    // TODO: remove
    if (needsArgumentTypes) {
      this.argumentTypes = [];
    }
    this.argumentSizes = [];
    this.argumentBitRatios = [];
    // TODO: end remove

    if (args.length < this.argumentNames.length) {
      throw new Error('not enough arguments for kernel');
    } else if (args.length > this.argumentNames.length) {
      throw new Error('too many arguments for kernel');
    }

    const { context: gl } = this;
    let textureIndexes = 0;

    const onRequestTexture = () => {
      return this.createTexture();
    };
    const onRequestIndex = () => {
      return this.constantTextureCount + textureIndexes++;
    };
    const onUpdateValueMismatch = (constructor) => {
      this.switchKernels({
        type: 'argumentMismatch',
        needed: constructor
      });
    };
    const onRequestContextHandle = () => {
      return gl.TEXTURE0 + this.constantTextureCount + this.argumentTextureCount++;
    };

    for (let index = 0; index < args.length; index++) {
      const value = args[index];
      const name = this.argumentNames[index];
      let type;
      if (needsArgumentTypes) {
        type = utils.getVariableType(value, this.strictIntegers);
        this.argumentTypes.push(type);
      } else {
        type = this.argumentTypes[index];
      }
      const KernelValue = this.constructor.lookupKernelValueType(type, this.dynamicArguments ? 'dynamic' : 'static', this.precision, args[index]);
      if (KernelValue === null) {
        return this.requestFallback(args);
      }
      const kernelArgument = new KernelValue(value, {
        name,
        type,
        tactic: this.tactic,
        origin: 'user',
        context: gl,
        checkContext: this.checkContext,