41 lines
1.2 KiB
HTML
41 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<script src =../../resources/testharness.js></script>
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<script src =../../resources/testharnessreport.js></script>
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<script>
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function draw2d(canvas) {
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var ctx = canvas.getContext('2d');
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ctx.fillStyle = 'green';
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ctx.fillRect(0, 0, canvas.width, canvas.height);
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return ctx;
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};
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function drawWebGL(canvas) {
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var gl = canvas.getContext('webgl');
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gl.clearColor(0, 1, 0, 1);
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gl.clear(gl.COLOR_BUFFER_BIT);
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return gl;
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};
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// Run captureStream() after transferControlToOffscreen().
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var testOffScreenCanvasCommits = function(drawFunction, message) {
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async_test(function(test) {
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var canvas = document.createElement('canvas');
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var offscreen = canvas.transferControlToOffscreen();
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var recorder = new MediaRecorder(canvas.captureStream());
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recorder.ondataavailable = test.step_func_done(function(event) {
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assert_true(event.data.size > 0, 'Recorded data size should be > 0');
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});
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recorder.start(0);
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var ctx = drawFunction(offscreen);
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ctx.commit();
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}), message;
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};
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testOffScreenCanvasCommits(draw2d,
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'capture of an OffscreenCanvas with 2D context');
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testOffScreenCanvasCommits(drawWebGL,
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'capture of an OffscreenCanvas with WebGL context');
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</script> |