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<!--
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 getActiveAttrib conformance test.</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>
</head>
<body>
<canvas id="example" width="16" height="16"></canvas>
<div id="description"></div>
<div id="console"></div>
<script id="vshader" type="x-shader/x-vertex">
attribute $type attr0;
void main()
{
gl_Position = vec4(0, 0, 0, attr0$access);
}
</script>
<script id="fshader" type="x-shader/x-fragment">
void main()
{
gl_FragColor = vec4(0,1,0,1);
}
</script>
<script>
"use strict";
description("Tests getActiveAttrib for various types");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("example");
var tests = [
{ glType: gl.FLOAT, size: 1, type: 'float', access: ''},
{ glType: gl.FLOAT_VEC2, size: 1, type: 'vec2', access: '[1]'},
{ glType: gl.FLOAT_VEC3, size: 1, type: 'vec3', access: '[2]'},
{ glType: gl.FLOAT_VEC4, size: 1, type: 'vec4', access: '[3]'},
{ glType: gl.FLOAT_MAT2, size: 1, type: 'mat2', access: '[1][1]'},
{ glType: gl.FLOAT_MAT3, size: 1, type: 'mat3', access: '[2][2]'},
{ glType: gl.FLOAT_MAT4, size: 1, type: 'mat4', access: '[3][3]'},
];
var source = document.getElementById('vshader').text;
var fs = wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER);
for (var tt = 0; tt < tests.length; ++tt) {
var t = tests[tt];
var vs = wtu.loadShader(
gl,
source.replace('$type', t.type).replace('$access', t.access),
gl.VERTEX_SHADER);
var program = wtu.setupProgram(gl, [vs, fs]);
wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from setup");
var numAttribs = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
var found = false;
for (var ii = 0; ii < numAttribs; ++ii) {
var info = gl.getActiveAttrib(program, ii);
if (info.name == 'attr0') {
found = true;
assertMsg(info.type == t.glType,
"type must be " + wtu.glEnumToString(gl, t.glType) + " was " +
wtu.glEnumToString(gl, info.type));
assertMsg(info.size == t.size,
"size must be " + t.size + ' was ' + info.size);
}
}
if (!found) {
testFailed("attrib 'attr0' not found");
}
}
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
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