gpu.js/test/internal/loop-max.js

const { assert, skip, test, module: describe } = require('qunit');
const { GPU, WebGLFunctionNode, WebGL2FunctionNode } = require('../../src');

describe('internal: loop max');

test('loop max output webgl', () => {
  const functionNode = new WebGLFunctionNode((function(a, b) {
    let sum = 0;
    for (let i = 0; i < a; i++) {
      sum += b[this.thread.x][i];
    }
    return sum;
  }).toString(), { isRootKernel: true, name: 'kernel', output: [1] });

  assert.equal(
    functionNode.toString(),
    'void kernel() {' +
    '\nfloat user_sum=0.0;' +
    '\nfor (int user_i=0;user_i<LOOP_MAX;user_i++){' +
    '\nif (user_i<int(user_a)) {' +
    '\nuser_sum+=get(user_b, user_bSize, user_bDim, user_bBitRatio, threadId.x, user_i);' +
    '\n} else {' +
    '\nbreak;' +
    '\n}' +
    '\n}' +
    '\n' +
    '\nkernelResult = user_sum;return;' +
    '\n}');
});

test('loop max output webgl2', () => {
  const functionNode = new WebGL2FunctionNode((function(a, b) {
    let sum = 0;
    for (let i = 0; i < a; i++) {
      sum += b[this.thread.x][i];
    }
    return sum;
  }).toString(), { isRootKernel: true, name: 'kernel', output: [1] });

  assert.equal(
    functionNode.toString(),
    'void kernel() {' +
    '\nfloat user_sum=0.0;' +
    '\nfor (int user_i=0;user_i<LOOP_MAX;user_i++){' +
    '\nif (user_i<int(user_a)) {' +
    '\nuser_sum+=get(user_b, user_bSize, user_bDim, user_bBitRatio, threadId.x, user_i);' +
    '\n} else {' +
    '\nbreak;' +
    '\n}' +
    '\n}' +
    '\n' +
    '\nkernelResult = user_sum;return;' +
    '\n}');
});

(GPU.isWebGLSupported ? test : skip)('loop max webgl', () => {
  const gpu = new GPU({mode: 'webgl'});
  const add = gpu.createKernel(function(a, b) {
    let sum = 0;
    for (let i = 0; i < a; i++) {
      sum += b[this.thread.x][i];
    }
    return sum;
  }).setOutput([1]);

  const output = add(1, [[1]]);
  assert.equal(
    output[0],
    1
  );
  gpu.destroy();
});

(GPU.isWebGL2Supported ? test : skip)('loop max webgl2', () => {
  const gpu = new GPU({mode: 'webgl2'});
  const add = gpu.createKernel(function(a, b) {
    let sum = 0;
    for (let i = 0; i < a; i++) {
      sum += b[this.thread.x][i];
    }
    return sum;
  }).setOutput([1]);

  const output = add(1, [[1]]);
  assert.equal(
    output[0],
    1
  );
  gpu.destroy();
});

(GPU.isHeadlessGLSupported ? test : skip)('loop max headlessgl', () => {
  const gpu = new GPU({mode: 'headlessgl'});
  const add = gpu.createKernel(function(a, b) {
    let sum = 0;
    for (let i = 0; i < a; i++) {
      sum += b[this.thread.x][i];
    }
    return sum;
  }).setOutput([1]);

  const output = add(1, [[1]]);
  assert.equal(
    output[0],
    1
  );
  gpu.destroy();
});