1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/conformance/glsl/misc/attrib-location-length-limits.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,82 @@
1.4 +<!DOCTYPE html>
1.5 +<html>
1.6 +<head>
1.7 +<meta charset="utf-8">
1.8 +<title>WebGL attrib location length tests</title>
1.9 +<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
1.10 +<link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
1.11 +<script src="../../../resources/js-test-pre.js"></script>
1.12 +<script src="../../resources/webgl-test.js"> </script>
1.13 +<script src="../../resources/webgl-test-utils.js"> </script>
1.14 +</head>
1.15 +<body>
1.16 +<canvas id="example" width="50" height="50">
1.17 +There is supposed to be an example drawing here, but it's not important.
1.18 +</canvas>
1.19 +<div id="description">Verify limits on the lengths of attribute locations per WebGL spec, "Maximum Uniform and Attribute Location Lengths".</div>
1.20 +<div id="console"></div>
1.21 +<script id="goodVertexShader" type="x-shader/x-vertex">
1.22 +// A vertex shader where the needed attrib location is exactly 256 characters.
1.23 +attribute vec4 vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
1.24 +
1.25 +void main()
1.26 +{
1.27 + gl_Position = vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456;
1.28 +}
1.29 +</script>
1.30 +<script id="badVertexShader" type="x-shader/x-vertex">
1.31 +// A vertex shader where the needed attrib location is 257 characters.
1.32 +attribute vec4 vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
1.33 +
1.34 +void main()
1.35 +{
1.36 + gl_Position = vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567;
1.37 +}
1.38 +</script>
1.39 +<script id="fragmentShader" type="x-shader/x-fragment">
1.40 +precision mediump float;
1.41 +
1.42 +void main() {
1.43 + gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
1.44 +}
1.45 +</script>
1.46 +<script>
1.47 +if (window.initNonKhronosFramework) {
1.48 + window.initNonKhronosFramework(false);
1.49 +}
1.50 +description("test attrib location length limit");
1.51 +
1.52 +var wtu = WebGLTestUtils;
1.53 +var gl = wtu.create3DContext("example");
1.54 +
1.55 +debug("Test attrib location underneath the length limit");
1.56 +var program = wtu.loadProgramFromScript(gl, "goodVertexShader", "fragmentShader");
1.57 +shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true');
1.58 +var attribLoc = gl.getAttribLocation(program, "vPosition0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456");
1.59 +if (attribLoc == -1) {
1.60 + testFailed("attrib location was -1, should not be");
1.61 +} else {
1.62 + testPassed("attrib location should not be -1");
1.63 +}
1.64 +wtu.glErrorShouldBe(gl, gl.NONE);
1.65 +
1.66 +debug("Test attrib location over the length limit");
1.67 +debug("Shader compilation or link should fail");
1.68 +shouldBe('wtu.loadProgramFromScriptExpectError(gl, "badVertexShader", "fragmentShader")', 'null');
1.69 +wtu.glErrorShouldBe(gl, gl.NONE);
1.70 +
1.71 +debug("Attempt to bind too-long attrib location should produce error");
1.72 +program = gl.createProgram();
1.73 +gl.bindAttribLocation(program, 0, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567");
1.74 +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
1.75 +
1.76 +debug("Attempt to fetch too-long attrib location should produce error");
1.77 +program = wtu.loadStandardProgram(gl);
1.78 +shouldBe('gl.getAttribLocation(program, "vPosition01234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567")', '-1');
1.79 +wtu.glErrorShouldBe(gl, gl.INVALID_VALUE);
1.80 +
1.81 +successfullyParsed = true;
1.82 +</script>
1.83 +<script>finishTest();</script>
1.84 +</body>
1.85 +</html>
