dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/uint-int-shift-bug.html

   1 <!--
   2 Copyright (c) 2020 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>Verify (uint(int) >> 31) works correctly (Adreno driver bug)</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="canvas" width="2" height="2"> </canvas>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script id="vshader-uint-1" type="x-shader/x-vertex">#version 300 es
  21 in vec3 aPosition;
  22 flat out highp uint uvalue;
  23 uniform highp int ivalue;
  24
  25 void main() {
  26     gl_Position = vec4(aPosition, 1);
  27     uvalue = uint(ivalue) >> 31u;
  28 }
  29 </script>
  30 <script id="fshader-uint-1" type="x-shader/x-fragment">#version 300 es
  31 flat in highp uint uvalue;
  32 out highp vec4 myFragColor;
  33
  34 void main() {
  35     if (uvalue == 1u)
  36         myFragColor = vec4(1.0, 0.0, 0.0, 1.0);
  37     else
  38         myFragColor = vec4(0.0, 0.0, 0.0, 1.0);
  39 }
  40 </script>
  41
  42 <script id="vshader-simple" type="x-shader/x-vertex">#version 300 es
  43 in vec3 aPosition;
  44
  45 void main() {
  46     gl_Position = vec4(aPosition, 1);
  47 }
  48 </script>
  49 <script id="fshader-uint-2" type="x-shader/x-fragment">#version 300 es
  50 uniform highp int ivalue;
  51 out highp vec4 myFragColor;
  52
  53 void main() {
  54     uint uvalue = uint(ivalue) >> 31u;
  55
  56     if (uvalue == 1u)
  57         myFragColor = vec4(1.0, 0.0, 0.0, 1.0);
  58     else
  59         myFragColor = vec4(0.0, 0.0, 0.0, 1.0);
  60 }
  61 </script>
  62
  63 <script type="application/javascript">
  64 "use strict";
  65 description("Verify (uint(int) >> 31) works correctly");
  66 debug("");
  67 var wtu = WebGLTestUtils;
  68 function test() {
  69     var gl = wtu.create3DContext("canvas", undefined, 2);
  70     if (!gl) {
  71         testFailed("context does not exist");
  72         return;
  73     }
  74     wtu.setupUnitQuad(gl);
  75
  76     var testCases = [
  77         { vshader: "vshader-uint-1", fshader: "fshader-uint-1", desc: "vertex shader uint" },
  78         { vshader: "vshader-simple", fshader: "fshader-uint-2", desc: "fragment shader uint" },
  79     ];
  80
  81     for (var idx = 0; idx < testCases.length; ++idx) {
  82         var test = testCases[idx];
  83
  84         debug("");
  85         var program = wtu.setupProgram(gl, [test.vshader, test.fshader], ["aPosition"]);
  86         if (!program) {
  87             testFailed("Fail to set up program");
  88         } else {
  89             var uniformLoc = gl.getUniformLocation(program, 'ivalue');
  90             gl.uniform1i(uniformLoc, -1);
  91             wtu.drawUnitQuad(gl);
  92             wtu.checkCanvas(gl, [255, 0, 0, 255]);
  93             gl.deleteProgram(program);
  94             wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from testing");
  95         }
  96     }
  97 };
  98
  99 test();
 100
 101 debug("");
 102 var successfullyParsed = true;
 103 </script>
 104 <script src="../../js/js-test-post.js"></script>
 105 </body>
 106 </html>