dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/mipmap-fbo.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 <title>Test if mipmap incomplete textures can be used as FBO attachments</title>
  12 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
  13 <script src="../../../js/js-test-pre.js"></script>
  14 <script src="../../../js/webgl-test-utils.js"></script>
  15 </head>
  16 <body>
  17 <canvas id="example" width="24" height="24"></canvas>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script>
  21 "use strict";
  22
  23 var wtu = WebGLTestUtils;
  24 description();
  25
  26 var gl = wtu.create3DContext("example", undefined, 2);
  27
  28 var testIncompleteMipmapInFBO = function () {
  29     // Create a texture that's not mipmap complete.
  30     var texture = gl.createTexture();
  31     gl.bindTexture(gl.TEXTURE_2D, texture);
  32     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
  33     gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
  34     gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 32, 32, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
  35
  36     // Framebuffer should be incomplete for incomplete texture.
  37     var fbo = gl.createFramebuffer();
  38     gl.bindFramebuffer(gl.FRAMEBUFFER, fbo);
  39     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 1);
  40     shouldBe("gl.checkFramebufferStatus(gl.FRAMEBUFFER)", "gl.FRAMEBUFFER_INCOMPLETE_ATTACHMENT");
  41 }
  42
  43 testIncompleteMipmapInFBO();
  44
  45 var successfullyParsed = true;
  46 </script>
  47 <script src="../../../js/js-test-post.js"></script>
  48
  49 </body>
  50 </html>