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Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/limits/gl-line-width.html')
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1 files changed, 93 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/limits/gl-line-width.html b/dom/canvas/test/webgl-conf/checkout/conformance/limits/gl-line-width.html new file mode 100644 index 000000000..3cd926150 --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/limits/gl-line-width.html @@ -0,0 +1,93 @@ +<!-- + +/* +** Copyright (c) 2015 The Khronos Group Inc. +** +** Permission is hereby granted, free of charge, to any person obtaining a +** copy of this software and/or associated documentation files (the +** "Materials"), to deal in the Materials without restriction, including +** without limitation the rights to use, copy, modify, merge, publish, +** distribute, sublicense, and/or sell copies of the Materials, and to +** permit persons to whom the Materials are furnished to do so, subject to +** the following conditions: +** +** The above copyright notice and this permission notice shall be included +** in all copies or substantial portions of the Materials. +** +** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. +*/ + +--> + +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8"> +<title>Verify that line width limits are enforced.</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> +</head> +<body> +<canvas id="example" width="4" height="4" style="width: 40px; height: 30px;"></canvas> +<div id="description"></div> +<div id="console"></div> +<script> +"use strict"; +description(document.title); +var wtu = WebGLTestUtils; +var gl = wtu.create3DContext("example"); + +// Query the line width range +var lineWidthRange = gl.getParameter(gl.ALIASED_LINE_WIDTH_RANGE); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors."); + +if (lineWidthRange[0] > 1 || lineWidthRange[1] < 1) + testFailed("Line width range must include width 1"); + +// Zero, negative, or NaN values should cause an error and leave the value unchanged. +var curLineWidth = gl.getParameter(gl.LINE_WIDTH); +gl.lineWidth(0); +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "Should not be able to set lineWidth to zero"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'curLineWidth'); // Previous value should be preserved + +gl.lineWidth(-1); +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "Should not be able to set lineWidth to a negative value"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'curLineWidth'); // Previous value should be preserved + +gl.lineWidth(NaN); +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE, "Should not be able to set lineWidth to NaN"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'curLineWidth'); // Previous value should be preserved + +// Check that the line width can be set to the valid range. +gl.lineWidth(lineWidthRange[1]); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be able to set lineWidth to the max supported value"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'lineWidthRange[1]'); + +gl.lineWidth(lineWidthRange[0]); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be able to set lineWidth to the min supported value"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'lineWidthRange[0]'); + +// Checks that the line width can be set outside the supported range without error, +// and the unclamped value can be queried back. +// Yes, this is actually what the spec says should happen. +// See: https://www.khronos.org/opengles/sdk/docs/man3/html/glLineWidth.xhtml +gl.lineWidth(lineWidthRange[1]+1); +wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be able to set lineWidth to the above max supported value"); +shouldBe('gl.getParameter(gl.LINE_WIDTH)', 'lineWidthRange[1]+1'); + +var successfullyParsed = true; + +</script> +<script src="../../js/js-test-post.js"></script> + +</body> +</html> + + |