dom/canvas/test/webgl-conf/checkout/conformance2/textures/misc/tex-base-level-bug.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>WebGL2 texture base level bug conformance test.</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 <script src="../../../js/tests/tex-image-and-sub-image-utils.js"></script>
  16 </head>
  17 <body>
  18 <canvas id="example" width="2" height="2" style="width: 2px; height: 2px;"></canvas>
  19 <div id="description"></div>
  20 <div id="console"></div>
  21
  22 <script>
  23 "use strict";
  24 description(document.title);
  25 var wtu = WebGLTestUtils;
  26 var canvas = document.getElementById("example");
  27 var gl = wtu.create3DContext("example", undefined, 2);
  28 var tiu = TexImageUtils;
  29
  30 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
  31
  32 function runtest() {
  33   debug("");
  34   debug("This is a regression test for <a href='https://crbug.com/705865'>Chromium Issue 705865</a>");
  35   var tex = gl.createTexture();
  36   var program = tiu.setupTexturedQuad(gl, "RGBA");
  37
  38   // Test that filling partial levels is enough for mipmapping.
  39   var width = 2;
  40   var height = 2;
  41   gl.bindTexture(gl.TEXTURE_2D, tex);
  42   wtu.fillTexture(gl, tex, width, height, [255, 0, 0, 255], 2, gl.RGBA, gl.UNSIGNED_BYTE);
  43   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_BASE_LEVEL, 2);
  44   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
  45   gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
  46   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture setup should succeed");
  47
  48   canvas.width = width;
  49   canvas.height = height;
  50   gl.viewport(0, 0, width, height);
  51
  52   wtu.clearAndDrawUnitQuad(gl);
  53   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "clearAndDrawQuad should succeed");
  54   wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
  55
  56   width = 1;
  57   height = 1;
  58   gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
  59   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed");
  60
  61   wtu.clearAndDrawUnitQuad(gl);
  62   wtu.checkCanvas(gl, [255, 0, 0, 255], "should draw with [255, 0, 0, 255]");
  63   wtu.glErrorShouldBe(gl, gl.NO_ERROR,"checkCanvas should succeed");
  64
  65   gl.deleteTexture(tex);
  66
  67 };
  68
  69 runtest();
  70 var successfullyParsed = true;
  71
  72 </script>
  73 <script src="../../../js/js-test-post.js"></script>
  74
  75 </body>
  76 </html>