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-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/manual/angle-instanced-arrays-state-leakage.html | 78 |
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diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/manual/angle-instanced-arrays-state-leakage.html b/dom/canvas/test/webgl-conf/checkout/conformance/manual/angle-instanced-arrays-state-leakage.html new file mode 100644 index 0000000000..d36e9877ff --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/manual/angle-instanced-arrays-state-leakage.html @@ -0,0 +1,78 @@ +<!-- +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 ANGLE_instanced_arrays state does not leak to browser</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 leaving state for ANGLE_instanced_arrays with non-default values at the +end of rendering does not interfere with proper compositing of results. +Failures seen on Linux and Mac with Chrome 32. +See http://crbug.com/304927 for more info. + +You should see a <span class="correct">green rectangle</span> +with black a outline on success. Briefly flashing red is normal. +</pre> +<canvas id='c'></canvas> +<div id="console"></div> +<script> +"use strict"; +var wtu = WebGLTestUtils; +var c = document.getElementById("c"); +// The bug has only been seen with preserveDrawingBuffer=true. +var gl = wtu.create3DContext(c, { preserveDrawingBuffer: true }); +var ext = wtu.getExtensionWithKnownPrefixes(gl, "ANGLE_instanced_arrays"); +var frame = 0; +function render() { + var RED_FRAMES = 3; + if (frame < RED_FRAMES) { + // Draw N frames red, leaving the vertex divisor to 0 after each call. + gl.clearColor(1,0,0,1); + gl.clear(gl.COLOR_BUFFER_BIT); + wtu.requestAnimFrame(render); + } else { + // Draw 2 more times in green, setting the divisor to 1 afterward. + gl.clearColor(0,1,0,1); + gl.clear(gl.COLOR_BUFFER_BIT); + if (frame - RED_FRAMES < 2) { + wtu.requestAnimFrame(render); + } else { + finishTest(); + } + // Leave attrib 0 set with a divisor of 1 before returning to browser. + if (ext) { + ext.vertexAttribDivisorANGLE(0, 1); + } + } + frame++; +} + +if (!ext) { + testPassed("No ANGLE_instanced_arrays support -- this is legal"); +} +wtu.requestAnimFrame(render); +var successfullyParsed = true; +</script> +</body> +</html> |