const { assert, skip, test, module: describe } = require('qunit');

const { GPU } = require('../../src');

describe('issue #300');

function nestedArrayIndex(mode) {

const gpu1 = new GPU({ mode });

const gpu2 = new GPU({ mode });

// these 2 should be equivalent

const broken = gpu1.createKernel(function(input, lookup) {

return lookup[input[this.thread.x]];

})

.setOutput([1]);

const working = gpu2.createKernel(function(input, lookup) {

const idx = input[this.thread.x];

return lookup[idx];

})

.setOutput([1]);

assert.equal(broken([2], [7, 13, 19, 23])[0], 19);

assert.equal(working([2], [7, 13, 19, 23])[0], 19);

gpu1.destroy();

gpu2.destroy();

}

test('Issue #300 nested array index - auto', () => {

nestedArrayIndex();

});

test('Issue #300 nested array index - gpu', () => {

nestedArrayIndex('gpu');

});

(GPU.isWebGLSupported ? test : skip)('Issue #300 nested array index - webgl', () => {

nestedArrayIndex('webgl');

});

(GPU.isWebGL2Supported ? test : skip)('Issue #300 nested array index - webgl2', () => {

nestedArrayIndex('webgl2');

});

(GPU.isHeadlessGLSupported ? test : skip)('Issue #300 nested array index - headlessgl', () => {

nestedArrayIndex('headlessgl');

});

test('Issue #300 nested array index - cpu', () => {

nestedArrayIndex('cpu');

});