content/canvas/test/webgl-conformance/conformance/glsl/misc/attrib-location-length-limits.html@fc2d59ddac77
content/canvas/test/webgl-conformance/conformance/glsl/misc/attrib-location-length-limits.html
Wed, 31 Dec 2014 07:22:50 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 07:22:50 +0100
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
- permissions
- -rw-r--r--
Correct previous dual key logic pending first delivery installment.
1 <!DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>WebGL attrib location length tests</title>
6 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
7 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
8 <script src="../../../resources/js-test-pre.js"></script>
9 <script src="../../resources/webgl-test.js"> </script>
10 <script src="../../resources/webgl-test-utils.js"> </script>
11 </head>
12 <body>
13 <canvas id="example" width="50" height="50">
14 There is supposed to be an example drawing here, but it's not important.
15 </canvas>
16 <div id="description">Verify limits on the lengths of attribute locations per WebGL spec, "Maximum Uniform and Attribute Location Lengths".</div>
17 <div id="console"></div>
18 <script id="goodVertexShader" type="x-shader/x-vertex">
19 // A vertex shader where the needed attrib location is exactly 256 characters.
20 attribute vec4 vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
22 void main()
23 {
24 gl_Position = vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
25 }
26 </script>
27 <script id="badVertexShader" type="x-shader/x-vertex">
28 // A vertex shader where the needed attrib location is 257 characters.
29 attribute vec4 vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
31 void main()
32 {
33 gl_Position = vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
34 }
35 </script>
36 <script id="fragmentShader" type="x-shader/x-fragment">
37 precision mediump float;
39 void main() {
40 gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
41 }
42 </script>
43 <script>
44 if (window.initNonKhronosFramework) {
45 window.initNonKhronosFramework(false);
46 }
47 description("test attrib location length limit");
49 var wtu = WebGLTestUtils;
50 var gl = wtu.create3DContext("example");
52 debug("Test attrib location underneath the length limit");
53 var program = wtu.loadProgramFromScript(gl, "goodVertexShader", "fragmentShader");
54 shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true');
55 var attribLoc = gl.getAttribLocation(program, "vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456");
56 if (attribLoc == -1) {
57 testFailed("attrib location was -1, should not be");
58 } else {
59 testPassed("attrib location should not be -1");
60 }
61 wtu.glErrorShouldBe(gl, gl.NONE);
63 debug("Test attrib location over the length limit");
64 debug("Shader compilation or link should fail");
65 shouldBe('wtu.loadProgramFromScriptExpectError(gl, "badVertexShader", "fragmentShader")', 'null');
66 wtu.glErrorShouldBe(gl, gl.NONE);
68 debug("Attempt to bind too-long attrib location should produce error");
69 program = gl.createProgram();
70 gl.bindAttribLocation(program, 0, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567");
71 wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
73 debug("Attempt to fetch too-long attrib location should produce error");
74 program = wtu.loadStandardProgram(gl);
75 shouldBe('gl.getAttribLocation(program, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567")', '-1');
76 wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
78 successfullyParsed = true;
79 </script>
80 <script>finishTest();</script>
81 </body>
82 </html>
