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/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
/**
* Tests if multiple WebGL contexts are correctly handled.
*/
function* ifWebGLSupported() {
let { target, front } = yield initBackend(MULTIPLE_CONTEXTS_URL);
front.setup({ reload: true });
let [firstProgramActor, secondProgramActor] = yield getPrograms(front, 2);
isnot(firstProgramActor, secondProgramActor,
"Two distinct program actors were recevide from two separate contexts.");
let firstVertexShader = yield firstProgramActor.getVertexShader();
let firstFragmentShader = yield firstProgramActor.getFragmentShader();
let secondVertexShader = yield secondProgramActor.getVertexShader();
let secondFragmentShader = yield secondProgramActor.getFragmentShader();
isnot(firstVertexShader, secondVertexShader,
"The two programs should have distinct vertex shaders.");
isnot(firstFragmentShader, secondFragmentShader,
"The two programs should have distinct fragment shaders.");
let firstVertSource = yield firstVertexShader.getText();
let firstFragSource = yield firstFragmentShader.getText();
let secondVertSource = yield secondVertexShader.getText();
let secondFragSource = yield secondFragmentShader.getText();
is(firstVertSource, secondVertSource,
"The vertex shaders should have identical sources.");
is(firstFragSource, secondFragSource,
"The vertex shaders should have identical sources.");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 255, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 255, g: 255, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
ok(true, "The two canvases are correctly drawn.");
yield firstProgramActor.highlight([1, 0, 0, 1]);
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 255, g: 0, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
ok(true, "The first canvas was correctly filled after highlighting.");
yield secondProgramActor.highlight([0, 1, 0, 1]);
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 255, b: 0, a: 255 }, true, "#canvas2");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 255, g: 0, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 0, g: 255, b: 0, a: 255 }, true, "#canvas2");
ok(true, "The second canvas was correctly filled after highlighting.");
yield firstProgramActor.unhighlight();
yield secondProgramActor.unhighlight();
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 255, g: 255, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 0, y: 0 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 255, g: 255, b: 0, a: 255 }, true, "#canvas1");
yield ensurePixelIs(front, { x: 127, y: 127 }, { r: 0, g: 255, b: 255, a: 255 }, true, "#canvas2");
ok(true, "The two canvases were correctly filled after unhighlighting.");
yield removeTab(target.tab);
finish();
}
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