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| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/manual/canvas-no-clear-on-readpixels.html | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/manual/canvas-no-clear-on-readpixels.html b/dom/canvas/test/webgl-conf/checkout/conformance/manual/canvas-no-clear-on-readpixels.html new file mode 100644 index 0000000000..3cab7821c5 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/manual/canvas-no-clear-on-readpixels.html @@ -0,0 +1,50 @@ +<!-- +Copyright (c) 2019 The Khronos Group Inc. +Use of this source code is governed by an MIT-style license that can be +found in the LICENSE.txt file. +--> + +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8"> +<title>Check that the canvas is NOT recomposited after calling readPixels</title> +<link rel="stylesheet" href="../../resources/js-test-style.css"/> +<script src="../../js/js-test-pre.js"></script> +<script src="../../js/webgl-test-utils.js"></script> +<style> +canvas { + border: 1px solid black; +} +.correct { + border: 1px solid black; + background-color: #00ff00; +} +</style> +</head> +<body> +<pre> +This test must be run manually. + +This test tests that a canvas is NOT cleared +and recomposited after calling readPixels. + +You should see a <span class="correct">green rectangle</span> +with black a outline on success. +</pre> +<canvas id='c'></canvas> +<div id="console"></div> +<script> +"use strict"; +var wtu = WebGLTestUtils; +var c = document.getElementById("c"); +var gl = wtu.create3DContext(c); +gl.clearColor(0,1,0,1); +gl.clear(gl.COLOR_BUFFER_BIT); +wtu.waitForComposite(function() { + gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4)); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors"); +}); +</script> +</body> +</html> |