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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL vertexAttrib Conformance Tests</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../resources/js-test-pre.js"></script>
<script src="../resources/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<canvas id="canvas" width="2" height="2"> </canvas>
<script>
"use strict";
description("This test ensures WebGL implementations vertexAttrib can be set and read.");

debug("");
debug("Canvas.getContext");

var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas");
if (!gl) {
  testFailed("context does not exist");
} else {
  testPassed("context exists");

  debug("");
  debug("Checking gl.vertexAttrib.");

  var numVertexAttribs = gl.getParameter(gl.MAX_VERTEX_ATTRIBS);
  for (var ii = 0; ii < numVertexAttribs; ++ii) {
    gl.vertexAttrib1fv(ii, [1]);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '1');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib2fv(ii, [1, 2]);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '1');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '2');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib3fv(ii, [1, 2, 3]);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '1');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '2');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '3');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib4fv(ii, [1, 2, 3, 4]);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '1');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '2');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '3');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '4');

    gl.vertexAttrib1f(ii, 5);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '5');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib2f(ii, 6, 7);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '6');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '7');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '0');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib3f(ii, 7, 8, 9);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '7');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '8');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '9');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '1');

    gl.vertexAttrib4f(ii, 6, 7, 8, 9);
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[0]', '6');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[1]', '7');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[2]', '8');
    shouldBe('gl.getVertexAttrib(' + ii + ', gl.CURRENT_VERTEX_ATTRIB)[3]', '9');
  }
  wtu.glErrorShouldBe(gl, gl.NO_ERROR);
}

debug("");
var successfullyParsed = true;

</script>
<script src="../../resources/js-test-post.js"></script>

</body>
</html>
