dom/canvas/test/webgl-conf/checkout/conformance2/extensions/ext-conservative-depth.html

   1 <!--
   2 Copyright (c) 2023 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 EXT_conservative_depth Conformance 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 </head>
  16 <body>
  17 <canvas width="32" height="32" id="c"></canvas>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script>
  21 "use strict";
  22 description("This test verifies the functionality of the EXT_conservative_depth extension, if it is available.");
  23
  24 debug("");
  25
  26 var wtu = WebGLTestUtils;
  27 var gl = wtu.create3DContext("c", null, 2);
  28 var ext;
  29
  30 function runShaderTests(extensionEnabled) {
  31     debug("");
  32     debug("Testing various shader compiles with extension " + (extensionEnabled ? "enabled" : "disabled"));
  33
  34     const macro = `#version 300 es
  35         precision mediump float;
  36         out vec4 my_FragColor;
  37         void main() {
  38         #ifdef GL_EXT_conservative_depth
  39             my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  40         #else
  41             #error no GL_EXT_conservative_depth;
  42         #endif
  43         }`;
  44
  45     const missingExtension = `#version 300 es
  46         precision mediump float;
  47         out vec4 my_FragColor;
  48         layout (depth_any) out float gl_FragDepth;
  49         void main() {
  50             my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  51             gl_FragDepth = 1.0;
  52         }`;
  53
  54     const valid = `#version 300 es
  55         #extension GL_EXT_conservative_depth : enable
  56         precision mediump float;
  57         out vec4 my_FragColor;
  58         layout (depth_any) out float gl_FragDepth;
  59         void main() {
  60             my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  61             gl_FragDepth = 1.0;
  62         }`;
  63
  64     const invalid = `#version 300 es
  65         #extension GL_EXT_conservative_depth : enable
  66         precision mediump float;
  67         out vec4 my_FragColor;
  68         layout (depth_unchanged) out float gl_FragDepth;
  69         void main() {
  70             my_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
  71             gl_FragDepth = 1.0;
  72         }`;
  73
  74     // Always expect the shader missing the #extension pragma to fail (whether enabled or not)
  75     if (wtu.setupProgram(gl, [wtu.simpleVertexShaderESSL300, missingExtension])) {
  76         testFailed("Depth layout qualifier allowed without #extension pragma");
  77     } else {
  78         testPassed("Depth layout qualifier disallowed without #extension pragma");
  79     }
  80
  81     // Expect the macro shader to succeed ONLY if enabled
  82     if (wtu.setupProgram(gl, [wtu.simpleVertexShaderESSL300, macro])) {
  83         if (extensionEnabled) {
  84             testPassed("Macro defined in shaders when extension is enabled");
  85         } else {
  86             testFailed("Macro defined in shaders when extension is disabled");
  87         }
  88     } else {
  89         if (extensionEnabled) {
  90             testFailed("Macro not defined in shaders when extension is enabled");
  91         } else {
  92             testPassed("Macro not defined in shaders when extension is disabled");
  93         }
  94     }
  95
  96     // Try to compile a shader using a layout qualifier that should only succeed if enabled
  97     if (wtu.setupProgram(gl, [wtu.simpleVertexShaderESSL300, valid])) {
  98         if (extensionEnabled) {
  99             testPassed("Depth layout qualifier compiled successfully when extension enabled");
 100         } else {
 101             testFailed("Depth layout qualifier compiled successfully when extension disabled");
 102         }
 103     } else {
 104         if (extensionEnabled) {
 105             testFailed("Depth layout qualifier failed to compile when extension enabled");
 106         } else {
 107             testPassed("Depth layout qualifier failed to compile when extension disabled");
 108         }
 109     }
 110
 111     // Try to compile a shader using a disallowed layout qualifier
 112     if (wtu.setupProgram(gl, [wtu.simpleVertexShaderESSL300, invalid])) {
 113         testFailed("Unsupported depth layout qualifier compiled successfully");
 114     } else {
 115         testPassed("Unsupported depth layout qualifier failed to compile");
 116     }
 117 }
 118
 119 function runTest() {
 120     if (!gl) {
 121         testFailed("WebGL context does not exist");
 122         return;
 123     }
 124     testPassed("WebGL context exists");
 125
 126     runShaderTests(false);
 127
 128     ext = gl.getExtension("EXT_conservative_depth");
 129     wtu.runExtensionSupportedTest(gl, "EXT_conservative_depth", ext !== null);
 130
 131     if (!ext) {
 132         testPassed("No EXT_conservative_depth support -- this is legal");
 133     } else {
 134         testPassed("Successfully enabled EXT_conservative_depth extension");
 135         runShaderTests(true);
 136     }
 137 }
 138
 139 runTest();
 140
 141 var successfullyParsed = true;
 142 </script>
 143 <script src="../../js/js-test-post.js"></script>
 144 </body>
 145 </html>