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rendering-stencil-large-viewport.html (2416B)

      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>WebGL Rendering Stencil large viewport Tests</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 
     16 <script id="vs" type="x-shader/x-vertex">
     17 attribute vec4 a_Position;
     18 void main()
     19 {
     20  gl_Position = a_Position;
     21 }
     22 </script>
     23 <script id="fs" type="x-shader/x-fragment">
     24 precision mediump float;
     25 uniform vec4 u_draw_color;
     26 void main()
     27 {
     28  gl_FragColor = u_draw_color;
     29 }
     30 </script>
     31 
     32 </head>
     33 <body>
     34 <canvas id="example" width="4" height="4"></canvas>
     35 <div id="description"></div>
     36 <div id="console"></div>
     37 
     38 <script>
     39 "use strict";
     40 
     41 var wtu = WebGLTestUtils;
     42 description("This test reproduces a driver bug on Intel windows platforms http://crbug.com/782317.");
     43 
     44 var gl = wtu.create3DContext("example", {stencil: true});
     45 
     46 var program, colorLoc;
     47 
     48 // Rendering with large viewport and stencil buffer enabled will lead to
     49 // memory leak and driver crash on d3d11 driver on Intel platforms.
     50 function render_stencil() {
     51  var canvas = document.getElementById("example");
     52  gl.uniform4f(colorLoc, 1.0, 0.0, 0.0, 1.0);
     53 
     54  canvas.width = 32767;
     55  canvas.height = 32767;
     56  gl.viewport(0, 0, 32767, 32767);
     57 
     58  gl.enable(gl.STENCIL_TEST);
     59 
     60  var kStencilRef = 4;
     61  gl.stencilOp(gl.REPLACE, gl.REPLACE, gl.REPLACE);
     62  gl.stencilFunc(gl.ALWAYS, kStencilRef, 0xFF);
     63 
     64  gl.drawArrays(gl.TRIANGLES, 0, 6);
     65  wtu.glErrorShouldBe(gl, gl.NO_ERROR);
     66  wtu.checkCanvasRect(gl, 0, 0, 1, 1, [255, 0, 0, 255],
     67                      "stencil test should be red");
     68 }
     69 
     70 if (!gl) {
     71    testFailed("WebGL context does not exist");
     72 } else {
     73    testPassed("WebGL context exists");
     74 
     75    program = wtu.setupProgram(gl, ["vs", "fs"], ["a_Position"]);
     76    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "after program initialization");
     77    shouldBe('gl.getProgramParameter(program, gl.LINK_STATUS)', 'true');
     78 
     79    colorLoc = gl.getUniformLocation(program, "u_draw_color")
     80    wtu.glErrorShouldBe(gl, gl.NO_ERROR, "query uniform location");
     81    shouldBeNonNull('colorLoc');
     82    wtu.setupUnitQuad(gl, 0);
     83 
     84    render_stencil();
     85 }
     86 
     87 var successfullyParsed = true;
     88 </script>
     89 <script src="../../js/js-test-post.js"></script>
     90 
     91 </body>
     92 </html>