| <!-- |
| 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>WebGL Conformance Tests</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> |
| <script src="../../js/test-eval.js"></script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <canvas id="canvas" width="2" height="2"> </canvas> |
| <script> |
| "use strict"; |
| description("Test that functions returning strings really do return strings (and not e.g. null)"); |
| debug(""); |
| |
| var validVertexShaderString = |
| "attribute vec4 aVertex; attribute vec4 aColor; varying vec4 vColor; void main() { vColor = aColor; gl_Position = aVertex; }"; |
| var validFragmentShaderString = |
| "precision mediump float; varying vec4 vColor; void main() { gl_FragColor = vColor; }"; |
| |
| function shouldReturnString(_a) |
| { |
| var exception; |
| var _av; |
| try { |
| _av = TestEval(_a); |
| } catch (e) { |
| exception = e; |
| } |
| |
| if (exception) |
| testFailed(_a + ' should return a string. Threw exception ' + exception); |
| else if (typeof _av == "string") |
| testPassed(_a + ' returns a string'); |
| else |
| testFailed(_a + ' should return a string. Returns: "' + _av + '"'); |
| } |
| |
| var wtu = WebGLTestUtils; |
| var gl = wtu.create3DContext("canvas"); |
| if (!gl) { |
| testFailed("context does not exist"); |
| } else { |
| var vs = gl.createShader(gl.VERTEX_SHADER); |
| shouldReturnString("gl.getShaderSource(vs)"); |
| shouldReturnString("gl.getShaderInfoLog(vs)"); |
| gl.shaderSource(vs, validVertexShaderString); |
| gl.compileShader(vs); |
| shouldReturnString("gl.getShaderSource(vs)"); |
| shouldReturnString("gl.getShaderInfoLog(vs)"); |
| |
| var fs = gl.createShader(gl.FRAGMENT_SHADER); |
| shouldReturnString("gl.getShaderSource(fs)"); |
| shouldReturnString("gl.getShaderInfoLog(fs)"); |
| gl.shaderSource(fs, validFragmentShaderString); |
| gl.compileShader(fs); |
| shouldReturnString("gl.getShaderSource(fs)"); |
| shouldReturnString("gl.getShaderInfoLog(fs)"); |
| |
| var prog = gl.createProgram(); |
| shouldReturnString("gl.getProgramInfoLog(prog)"); |
| gl.attachShader(prog, vs); |
| gl.attachShader(prog, fs); |
| gl.linkProgram(prog); |
| shouldReturnString("gl.getProgramInfoLog(prog)"); |
| |
| // Make sure different numbers of extensions doesn't result in |
| // different test output. |
| var exts = gl.getSupportedExtensions(); |
| var allPassed = true; |
| for (var ii = 0; ii < exts.length; ++ii) { |
| var s = exts[ii]; |
| if (typeof s != "string") { |
| shouldReturnString("gl.getSupportedExtensions()[" + s + "]"); |
| allPassed = false; |
| } |
| } |
| if (allPassed) { |
| testPassed('getSupportedExtensions() returns an array of strings'); |
| } |
| |
| shouldReturnString("gl.getParameter(gl.VENDOR)"); |
| shouldReturnString("gl.getParameter(gl.RENDERER)"); |
| shouldReturnString("gl.getParameter(gl.VERSION)"); |
| shouldReturnString("gl.getParameter(gl.SHADING_LANGUAGE_VERSION)"); |
| } |
| |
| debug(""); |
| var successfullyParsed = true; |
| |
| </script> |
| <script src="../../js/js-test-post.js"></script> |
| |
| </body> |
| </html> |
