1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/conformance/attribs/gl-vertexattribpointer.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,133 @@
1.4 +<!--
1.5 +Copyright (c) 2011 The Chromium Authors. All rights reserved.
1.6 +Use of this source code is governed by a BSD-style license that can be
1.7 +found in the LICENSE file.
1.8 + -->
1.9 +<!DOCTYPE html>
1.10 +<html>
1.11 +<head>
1.12 +<meta charset="utf-8">
1.13 +<title>WebGL vertexAttribPointer Conformance Tests</title>
1.14 +<link rel="stylesheet" href="../../resources/js-test-style.css"/>
1.15 +<script src="../../resources/desktop-gl-constants.js" type="text/javascript"></script>
1.16 +<script src="../../resources/js-test-pre.js"></script>
1.17 +<script src="../resources/webgl-test.js"></script>
1.18 +<script src="../resources/webgl-test-utils.js"></script>
1.19 +</head>
1.20 +<body>
1.21 +<div id="description"></div>
1.22 +<div id="console"></div>
1.23 +<canvas id="canvas" width="2" height="2"> </canvas>
1.24 +<script>
1.25 +description("This test checks vertexAttribPointer behaviors in WebGL.");
1.26 +
1.27 +debug("");
1.28 +debug("Canvas.getContext");
1.29 +
1.30 +var wtu = WebGLTestUtils;
1.31 +var gl = create3DContext(document.getElementById("canvas"));
1.32 +if (!gl) {
1.33 + testFailed("context does not exist");
1.34 +} else {
1.35 + testPassed("context exists");
1.36 +
1.37 + debug("");
1.38 + debug("Checking gl.vertexAttribPointer.");
1.39 +
1.40 + if (!gl.FIXED) {
1.41 + gl.FIXED = 0x140C;
1.42 + }
1.43 +
1.44 + gl.vertexAttribPointer(0, 3, gl.FLOAT, 0, 0, 12);
1.45 + glErrorShouldBe(gl, gl.INVALID_OPERATION,
1.46 + "vertexAttribPointer should fail if no buffer is bound");
1.47 +
1.48 + var vertexObject = gl.createBuffer();
1.49 + gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
1.50 + gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(0), gl.STATIC_DRAW);
1.51 +
1.52 + gl.vertexAttribPointer(0, 1, gl.INT, 0, 0, 0);
1.53 + glErrorShouldBe(gl, gl.INVALID_ENUM,
1.54 + "vertexAttribPointer should not support INT");
1.55 + gl.vertexAttribPointer(0, 1, gl.UNSIGNED_INT, 0, 0, 0);
1.56 + glErrorShouldBe(gl, gl.INVALID_ENUM,
1.57 + "vertexAttribPointer should not support UNSIGNED_INT");
1.58 + gl.vertexAttribPointer(0, 1, gl.FIXED, 0, 0, 0);
1.59 + glErrorShouldBe(gl, gl.INVALID_ENUM,
1.60 + "vertexAttribPointer should not support FIXED");
1.61 +
1.62 + function checkVertexAttribPointer(
1.63 + gl, err, reason, size, type, normalize, stride, offset) {
1.64 + gl.vertexAttribPointer(0, size, type, normalize, stride, offset);
1.65 + glErrorShouldBe(gl, err,
1.66 + "gl.vertexAttribPointer(0, " + size +
1.67 + ", gl." + wtu.glEnumToString(gl, type) +
1.68 + ", " + normalize +
1.69 + ", " + stride +
1.70 + ", " + offset +
1.71 + ") should " + (err == gl.NO_ERROR ? "succeed " : "fail ") + reason);
1.72 + }
1.73 +
1.74 + var types = [
1.75 + { type:gl.BYTE, bytesPerComponent: 1 },
1.76 + { type:gl.UNSIGNED_BYTE, bytesPerComponent: 1 },
1.77 + { type:gl.SHORT, bytesPerComponent: 2 },
1.78 + { type:gl.UNSIGNED_SHORT, bytesPerComponent: 2 },
1.79 + { type:gl.FLOAT, bytesPerComponent: 4 },
1.80 + ];
1.81 +
1.82 + for (var ii = 0; ii < types.length; ++ii) {
1.83 + var info = types[ii];
1.84 + debug("");
1.85 + for (var size = 1; size <= 4; ++size) {
1.86 + debug("");
1.87 + debug("checking: " + wtu.glEnumToString(gl, info.type) + " with size " + size);
1.88 + var bytesPerElement = size * info.bytesPerComponent;
1.89 + var offsetSet = [
1.90 + 0,
1.91 + 1,
1.92 + info.bytesPerComponent - 1,
1.93 + info.bytesPerComponent,
1.94 + info.bytesPerComponent + 1,
1.95 + info.bytesPerComponent * 2];
1.96 + for (var jj = 0; jj < offsetSet.length; ++jj) {
1.97 + var offset = offsetSet[jj];
1.98 + for (var kk = 0; kk < offsetSet.length; ++kk) {
1.99 + var stride = offsetSet[kk];
1.100 + var err = gl.NO_ERROR;
1.101 + var reason = ""
1.102 + if (offset % info.bytesPerComponent != 0) {
1.103 + reason = "because offset is bad";
1.104 + err = gl.INVALID_OPERATION;
1.105 + }
1.106 + if (stride % info.bytesPerComponent != 0) {
1.107 + reason = "because stride is bad";
1.108 + err = gl.INVALID_OPERATION;
1.109 + }
1.110 + checkVertexAttribPointer(
1.111 + gl, err, reason, size, info.type, false, stride, offset);
1.112 + }
1.113 + var stride = Math.floor(255 / info.bytesPerComponent) * info.bytesPerComponent;
1.114 +
1.115 + if (offset == 0) {
1.116 + checkVertexAttribPointer(
1.117 + gl, gl.NO_ERROR, "at stride limit",
1.118 + size, info.type, false, stride, offset);
1.119 + checkVertexAttribPointer(
1.120 + gl, gl.INVALID_VALUE, "over stride limit",
1.121 + size, info.type, false,
1.122 + stride + info.bytesPerComponent, offset);
1.123 + }
1.124 + }
1.125 + }
1.126 + }
1.127 +}
1.128 +
1.129 +debug("");
1.130 +successfullyParsed = true;
1.131 +
1.132 +</script>
1.133 +<script>finishTest();</script>
1.134 +
1.135 +</body>
1.136 +</html>
