dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/texture-offset-out-of-range.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>GLSL out-of-range texture offset 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/glsl-conformance-test.js"></script>
  16 </head>
  17 <body>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script id="vshaderInvalidOffset" type="x-shader/x-vertex">#version 300 es
  21 in vec4 a_position;
  22 in vec2 a_in0;
  23 out vec2 v_texCoord;
  24
  25 void main()
  26 {
  27     gl_Position = a_position;
  28     v_texCoord = a_in0;
  29 }
  30 </script>
  31 <script id="fshaderInvalidOffset" type="x-shader/x-fragment">#version 300 es
  32 precision mediump float;
  33
  34 in vec2 v_texCoord;
  35 out vec4 my_FragColor;
  36 uniform sampler2D u_sampler;
  37 uniform int x;
  38
  39 void main() {
  40     my_FragColor = textureOffset(u_sampler, v_texCoord, ivec2(0, $(yoffset)));
  41 }
  42 </script>
  43 <script type="application/javascript">
  44 "use strict";
  45 description("Out-of-range texture offset should not compile.");
  46
  47 var wtu = WebGLTestUtils;
  48
  49 var vshader = wtu.getScript('vshaderInvalidOffset');
  50 var fshaderTemplate = wtu.getScript('fshaderInvalidOffset');
  51
  52 var gl = wtu.create3DContext(undefined, undefined, 2);
  53
  54 if (!gl) {
  55     testFailed("Unable to initialize WebGL 2.0 context.");
  56 } else {
  57     var minOffset = gl.getParameter(gl.MIN_PROGRAM_TEXEL_OFFSET);
  58     var maxOffset = gl.getParameter(gl.MAX_PROGRAM_TEXEL_OFFSET);
  59
  60     var shaderSrcValidMin = wtu.replaceParams(fshaderTemplate, {'yoffset': minOffset});
  61     var shaderSrcValidMax = wtu.replaceParams(fshaderTemplate, {'yoffset': maxOffset});
  62     var shaderSrcBelowMin = wtu.replaceParams(fshaderTemplate, {'yoffset': (minOffset - 1)});
  63     var shaderSrcAboveMax = wtu.replaceParams(fshaderTemplate, {'yoffset': (maxOffset + 1)});
  64     var shaderSrcDynamic = wtu.replaceParams(fshaderTemplate, {'yoffset': 'x'});
  65
  66     GLSLConformanceTester.runTests([
  67     {
  68         vShaderSource: vshader,
  69         fShaderSource: shaderSrcValidMin,
  70         fShaderSuccess: true,
  71         linkSuccess: true,
  72         passMsg: 'Minimum in-range texture offset should compile'
  73     },
  74     {
  75         vShaderSource: vshader,
  76         fShaderSource: shaderSrcValidMax,
  77         fShaderSuccess: true,
  78         linkSuccess: true,
  79         passMsg: 'Maximum in-range texture offset should compile'
  80     },
  81     {
  82         vShaderSource: vshader,
  83         fShaderSource: shaderSrcBelowMin,
  84         fShaderSuccess: false,
  85         linkSuccess: false,
  86         passMsg: 'Texture offset below minimum valid value should not compile'
  87     },
  88     {
  89         vShaderSource: vshader,
  90         fShaderSource: shaderSrcAboveMax,
  91         fShaderSuccess: false,
  92         linkSuccess: false,
  93         passMsg: 'Texture offset above maximum valid value should not compile'
  94     },
  95     {
  96         vShaderSource: vshader,
  97         fShaderSource: shaderSrcDynamic,
  98         fShaderSuccess: false,
  99         linkSuccess: false,
 100         passMsg: 'Dynamic texture offset should not compile'
 101     }
 102     ], 2);
 103 }
 104 </script>
 105 </body>
 106 </html>