diff options
Diffstat (limited to 'dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/attrib-location-length-limits.html')
| -rw-r--r-- | dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/attrib-location-length-limits.html | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/attrib-location-length-limits.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/attrib-location-length-limits.html new file mode 100644 index 0000000000..1f18a2309b --- /dev/null +++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/attrib-location-length-limits.html @@ -0,0 +1,89 @@ +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8"> +<!-- +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. +--> +<title>WebGL attrib location length tests</title> +<link rel="stylesheet" href="../../../resources/js-test-style.css"/> +<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/> +<script src="../../../js/js-test-pre.js"></script> +<script src="../../../js/webgl-test-utils.js"> </script> +</head> +<body> +<canvas id="example" width="50" height="50"> +There is supposed to be an example drawing here, but it's not important. +</canvas> +<div id="description">Verify limits on the lengths of attribute locations per WebGL spec, "Maximum Uniform and Attribute Location Lengths".</div> +<div id="console"></div> +<script id="goodVertexShader" type="x-shader/x-vertex"> +// A vertex shader where the needed attrib location is exactly 256 characters. +attribute vec4 vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456; + +void main() +{ + gl_Position = vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456; +} +</script> +<script id="badVertexShader" type="x-shader/x-vertex"> +// A vertex shader where the needed attrib location is 257 characters. +attribute vec4 vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567; + +void main() +{ + gl_Position = vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567; +} +</script> +<script id="fragmentShader" type="x-shader/x-fragment"> +precision mediump float; + +void main() { + gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0); +} +</script> +<script> +"use strict"; +description("test attrib location length limit"); + +var wtu = WebGLTestUtils; +var gl = wtu.create3DContext("example"); + +debug("Test attrib location underneath the length limit"); +var program = wtu.loadProgramFromScript(gl, "goodVertexShader", "fragmentShader"); +shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true'); +var attrib256Name = "vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456"; +gl.bindAttribLocation(program, 0, attrib256Name); +wtu.glErrorShouldBe(gl, gl.NONE); +var attribLoc = gl.getAttribLocation(program, attrib256Name); +if (attribLoc == -1) { + testFailed("attrib location was -1, should not be"); +} else { + testPassed("attrib location should not be -1"); +} +wtu.glErrorShouldBe(gl, gl.NONE); + +debug("Test attrib location over the length limit"); +var attrib257Name = attrib256Name + "7"; + +debug("Shader compilation or link should fail"); +shouldBe('wtu.loadProgramFromScriptExpectError(gl, "badVertexShader", "fragmentShader")', 'null'); +wtu.glErrorShouldBe(gl, gl.NONE); + +debug("Attempt to bind too-long attrib location should produce error"); +program = gl.createProgram(); +gl.bindAttribLocation(program, 0, attrib257Name); +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE); + +debug("Attempt to fetch too-long attrib location should produce error"); +program = wtu.loadStandardProgram(gl); +shouldBe('gl.getAttribLocation(program, attrib257Name)', '-1'); +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE); + +var successfullyParsed = true; +</script> +<script src="../../../js/js-test-post.js"></script> +</body> +</html> |