Function cpuKernelString

src/backend/cpu/kernel-string.js:29–181

(cpuKernel, name)

}

function cpuKernelString(cpuKernel, name) {
  const header = [];
  const thisProperties = [];
  const beforeReturn = [];

  const useFunctionKeyword = !/^function/.test(cpuKernel.color.toString());

  header.push(
    '  const { context, canvas, constants: incomingConstants } = settings;',
    `  const output = new Int32Array(${JSON.stringify(Array.from(cpuKernel.output))});`,
    `  const _constantTypes = ${JSON.stringify(cpuKernel.constantTypes)};`,
    `  const _constants = ${constantsToString(cpuKernel.constants, cpuKernel.constantTypes)};`
  );

  thisProperties.push(
    '    constants: _constants,',
    '    context,',
    '    output,',
    '    thread: {x: 0, y: 0, z: 0},'
  );

  if (cpuKernel.graphical) {
    header.push(`  const _imageData = context.createImageData(${cpuKernel.output[0]}, ${cpuKernel.output[1]});`);
    header.push(`  const _colorData = new Uint8ClampedArray(${cpuKernel.output[0]} * ${cpuKernel.output[1]} * 4);`);

    const colorFn = utils.flattenFunctionToString((useFunctionKeyword ? 'function ' : '') + cpuKernel.color.toString(), {
      thisLookup: (propertyName) => {
        switch (propertyName) {
          case '_colorData':
            return '_colorData';
          case '_imageData':
            return '_imageData';
          case 'output':
            return 'output';
          case 'thread':
            return 'this.thread';
        }
        return JSON.stringify(cpuKernel[propertyName]);
      },
      findDependency: (object, name) => {
        return null;
      }
    });

    const getPixelsFn = utils.flattenFunctionToString((useFunctionKeyword ? 'function ' : '') + cpuKernel.getPixels.toString(), {
      thisLookup: (propertyName) => {
        switch (propertyName) {
          case '_colorData':
            return '_colorData';
          case '_imageData':
            return '_imageData';
          case 'output':
            return 'output';
          case 'thread':
            return 'this.thread';
        }
        return JSON.stringify(cpuKernel[propertyName]);
      },