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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html')
-rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html new file mode 100644 index 0000000000..5c81552793 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/canvas-remains-unchanged-after-used-in-webgl-texture.html @@ -0,0 +1,73 @@ +<!-- +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"> +<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> +</head> +<body> +<canvas id="c" width="16" height="16"></canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; +description('Tests canvas remains unchanged after it is used in webgl texutre'); + +debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=446380'>Chromium Issue 446380</a>"); +debug(""); + +var wtu = WebGLTestUtils; +var gl = wtu.create3DContext("c", undefined, 2); + +function checkSourceCanvasImageData(imageDataBefore, imageDataAfter) { + if (imageDataBefore.length != imageDataAfter.length) { + testFailed("The size of image data in source canvas become different after it is used in webgl texture."); + return; + } + for (var i = 0; i < imageDataAfter.length; i++) { + if (imageDataBefore[i] != imageDataAfter[i]) { + testFailed("Pixel values in source canvas have changed after canvas used in webgl texture."); + return; + } + } + testPassed("Pixel values in source canvas remain unchanged after canvas used in webgl texture."); +} + +function runTest(width, height) { + var canvas = document.createElement("canvas"); + canvas.width = width; + canvas.height = height; + var ctx = canvas.getContext("2d"); + ctx.fillStyle = "rgba(1, 63, 127, 1)"; + ctx.fillRect(0, 0, canvas.width, canvas.height); + var refCanvas = document.createElement("canvas"); + refCanvas.width = width; + refCanvas.height = height; + var refCtx = refCanvas.getContext("2d"); + refCtx.fillStyle = "rgba(1, 63, 127, 1)"; + refCtx.fillRect(0, 0, canvas.width, canvas.height); + // A refCanvas with same data as canvas is used to get original image data, since + // getImageData may change hardware accelerated status of canvas and we don't want to + // omit testing for hardware accelerated canvas. + var imageDataBefore = refCtx.getImageData(0, 0, refCanvas.width, refCanvas.height); + var tex = gl.createTexture(); + gl.bindTexture(gl.TEXTURE_2D, tex); + gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas); + wtu.glErrorShouldBe(gl, gl.NO_ERROR, "TexImage2D should succeed"); + checkSourceCanvasImageData(imageDataBefore, ctx.getImageData(0, 0, canvas.width, canvas.height)); + gl.deleteTexture(tex); +} + +runTest(2, 2); +runTest(257, 257); + +finishTest(); +</script> +</body> +</html> |