Method setupConstants

src/backend/web-gl/kernel.js:427–476

(args)

  }

  setupConstants(args) {
    const { context: gl } = this;
    this.kernelConstants = [];
    this.forceUploadKernelConstants = [];
    let needsConstantTypes = this.constantTypes === null;
    if (needsConstantTypes) {
      this.constantTypes = {};
    }
    this.constantBitRatios = {};
    let textureIndexes = 0;
    for (const name in this.constants) {
      const value = this.constants[name];
      let type;
      if (needsConstantTypes) {
        type = utils.getVariableType(value, this.strictIntegers);
        this.constantTypes[name] = type;
      } else {
        type = this.constantTypes[name];
      }
      const KernelValue = this.constructor.lookupKernelValueType(type, 'static', this.precision, value);
      if (KernelValue === null) {
        return this.requestFallback(args);
      }
      const kernelValue = new KernelValue(value, {
        name,
        type,
        tactic: this.tactic,
        origin: 'constants',
        context: this.context,
        checkContext: this.checkContext,
        kernel: this,
        strictIntegers: this.strictIntegers,
        onRequestTexture: () => {
          return this.createTexture();
        },
        onRequestIndex: () => {
          return textureIndexes++;
        },
        onRequestContextHandle: () => {
          return gl.TEXTURE0 + this.constantTextureCount++;
        }
      });
      this.constantBitRatios[name] = kernelValue.bitRatio;
      this.kernelConstants.push(kernelValue);
      kernelValue.setup();
      if (kernelValue.forceUploadEachRun) {
        this.forceUploadKernelConstants.push(kernelValue);
      }
    }
  }

  build() {
    if (this.built) return;