gl-unknown-uniform.html

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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

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<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>WebGL Unknown Uniform 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>

<div id="description"></div>

<div id="console"></div>

<canvas id="canvas" width="2" height="2"> </canvas>

<script id="vshader" type="x-shader/x-vertex">

attribute vec4 vPosition;

void main()

    gl_Position = vPosition;

</script>

<script id="fshader" type="x-shader/x-fragment">

void main()

    gl_FragColor = vec4(1.0,0.0,0.0,1.0);

</script>

<script>

"use strict";

description("Tests that unknown uniforms don't cause errors.");

debug("");

debug("Canvas.getContext");

var wtu = WebGLTestUtils;

var gl = wtu.create3DContext("canvas");

if (!gl) {

  testFailed("context does not exist");

} else {

  testPassed("context exists");

  debug("");

  var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);

  // Get the location of an unknown uniform.

  var loc = gl.getUniformLocation(program, "someUnknownUniform");

  assertMsg(loc === null, "location of unknown uniform should be null");

  wtu.glErrorShouldBe(gl, gl.NO_ERROR,

      "there should be no error from getting an unknown uniform");

  gl.uniform1f(loc, 1);

  wtu.glErrorShouldBe(gl, gl.NO_ERROR,

      "there should be no error from trying to set an unknown uniform");

debug("");

var successfullyParsed = true;

</script>

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

</body>

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