michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: /**
michael@0:  * Tests if the WebGL context is correctly instrumented every time the
michael@0:  * target navigates.
michael@0:  */
michael@0: 
michael@0: function ifWebGLSupported() {
michael@0:   let [target, debuggee, front] = yield initBackend(SIMPLE_CANVAS_URL);
michael@0: 
michael@0:   front.setup({ reload: true });
michael@0:   yield testHighlighting((yield once(front, "program-linked")));
michael@0:   ok(true, "Canvas was correctly instrumented on the first navigation.");
michael@0: 
michael@0:   reload(target);
michael@0:   yield testHighlighting((yield once(front, "program-linked")));
michael@0:   ok(true, "Canvas was correctly instrumented on the second navigation.");
michael@0: 
michael@0:   reload(target);
michael@0:   yield testHighlighting((yield once(front, "program-linked")));
michael@0:   ok(true, "Canvas was correctly instrumented on the third navigation.");
michael@0: 
michael@0:   yield removeTab(target.tab);
michael@0:   finish();
michael@0: 
michael@0:   function testHighlighting(programActor) {
michael@0:     return Task.spawn(function() {
michael@0:       yield ensurePixelIs(debuggee, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true);
michael@0:       yield ensurePixelIs(debuggee, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
michael@0:       ok(true, "The corner pixel colors are correct before highlighting.");
michael@0: 
michael@0:       yield programActor.highlight([0, 1, 0, 1]);
michael@0:       yield ensurePixelIs(debuggee, { x: 0, y: 0 }, { r: 0, g: 0, b: 0, a: 255 }, true);
michael@0:       yield ensurePixelIs(debuggee, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
michael@0:       ok(true, "The corner pixel colors are correct after highlighting.");
michael@0: 
michael@0:       yield programActor.unhighlight();
michael@0:       yield ensurePixelIs(debuggee, { x: 0, y: 0 }, { r: 255, g: 0, b: 0, a: 255 }, true);
michael@0:       yield ensurePixelIs(debuggee, { x: 511, y: 511 }, { r: 0, g: 255, b: 0, a: 255 }, true);
michael@0:       ok(true, "The corner pixel colors are correct after unhighlighting.");
michael@0:     });
michael@0:   }
michael@0: }