dom/canvas/test/webgl-conf/checkout/conformance/rendering/point-no-attributes.html

   1 <!--
   2 Copyright (c) 2019 The Khronos Group Inc.
   3 Use of this source code is governed by an MIT-style license that can be
   4 found in the LICENSE.txt file.
   5 -->
   6
   7 <!DOCTYPE html>
   8 <html>
   9 <head>
  10 <meta charset="utf-8">
  11 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  12 <script src="../../js/js-test-pre.js"></script>
  13 <script src="../../js/webgl-test-utils.js"></script>
  14 <script id="vshader" type="x-shader/x-vertex">
  15 void main()
  16 {
  17     gl_PointSize = 1.0;
  18     gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
  19 }
  20 </script>
  21
  22 <script id="fshader" type="x-shader/x-fragment">
  23 precision mediump float;
  24
  25 void main()
  26 {
  27     gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
  28 }
  29 </script>
  30 </head>
  31 <body>
  32 <canvas id="testbed" width="1" height="1" style="width: 100px; height: 100px;"></canvas>
  33 <div id="description"></div>
  34 <div id="console"></div>
  35 <script>
  36 "use strict";
  37 description('Verify that drawing a point without enabling any attributes succeeds');
  38
  39 var wtu = WebGLTestUtils;
  40 var gl = wtu.create3DContext('testbed');
  41
  42 var program1 = wtu.setupProgram(gl, ['vshader', 'fshader']);
  43
  44 debug('Draw a point with a shader that takes no attributes and verify it fills the whole canvas.');
  45
  46 gl.drawArrays(gl.POINTS, 0, 1);
  47 wtu.glErrorShouldBe(gl, gl.NO_ERROR);
  48 wtu.checkCanvas(gl, [0, 255, 0, 255]);
  49
  50 var successfullyParsed = true;
  51 </script>
  52 <script src="../../js/js-test-post.js"></script>
  53
  54 </body>
  55 </html>