dom/canvas/test/webgl-conf/checkout/conformance2/rendering/framebuffer-unsupported.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>WebGL FRAMEBUFFER_UNSUPPORTED 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 </head>
  16 <body>
  17 <div id="description"></div>
  18 <div id="console"></div>
  19 <canvas id="canvas" width="2" height="2"> </canvas>
  20
  21 <script>
  22 "use strict";
  23 var wtu = WebGLTestUtils;
  24 var gl;
  25 var canvas = document.getElementById("canvas");
  26
  27 function checkFramebuffer(expected) {
  28     var actual = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
  29     if (expected.indexOf(actual) < 0) {
  30         var msg = "checkFramebufferStatus expects [";
  31         for (var index = 0; index < expected.length; ++index) {
  32             msg += wtu.glEnumToString(gl, expected[index]);
  33             if (index + 1 < expected.length)
  34                 msg += ", ";
  35         }
  36         msg += "], was " + wtu.glEnumToString(gl, actual);
  37         testFailed(msg);
  38     } else {
  39         var msg = "checkFramebufferStatus got " + wtu.glEnumToString(gl, actual) +
  40                   " as expected";
  41         testPassed(msg);
  42     }
  43 }
  44
  45 function testImageAttachedTwoPoints() {
  46     debug("");
  47     debug("Checking an image is attached to more than one color attachment in a framebuffer.");
  48
  49     var tex1 = gl.createTexture();
  50     var tex2 = gl.createTexture();
  51     var fb = gl.createFramebuffer();
  52     gl.bindTexture(gl.TEXTURE_2D, tex1);
  53     gl.texImage2D(gl.TEXTURE_2D,
  54                   0,                                          // level
  55                   gl.RGBA,                                    // internalFormat
  56                   1,                                          // width
  57                   1,                                          // height
  58                   0,                                          // border
  59                   gl.RGBA,                                    // format
  60                   gl.UNSIGNED_BYTE,                           // type
  61                   new Uint8Array(4));                         // data
  62     gl.bindTexture(gl.TEXTURE_2D, tex2);
  63     gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
  64     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Texture creation should succeed.");
  65
  66     gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  67     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, tex1, 0);
  68     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  69     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT1, gl.TEXTURE_2D, tex2, 0);
  70     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  71     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT2, gl.TEXTURE_2D, tex1, 0);
  72     checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);
  73
  74     gl.bindFramebuffer(gl.FRAMEBUFFER, null);
  75     gl.deleteFramebuffer(fb);
  76     fb = gl.createFramebuffer();
  77     gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  78     var texCube = gl.createTexture();
  79     gl.bindTexture(gl.TEXTURE_CUBE_MAP, texCube);
  80     for (var target = gl.TEXTURE_CUBE_MAP_POSITIVE_X; target < gl.TEXTURE_CUBE_MAP_POSITIVE_X + 6; target++) {
  81       gl.texImage2D(target, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, new Uint8Array(4));
  82     }
  83     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
  84     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  85     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT1, gl.TEXTURE_CUBE_MAP_POSITIVE_Y, texCube, 0);
  86     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
  87     gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT2, gl.TEXTURE_CUBE_MAP_POSITIVE_X, texCube, 0);
  88     checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);
  89
  90
  91     gl.bindFramebuffer(gl.FRAMEBUFFER, null);
  92     gl.deleteFramebuffer(fb);
  93     fb = gl.createFramebuffer();
  94     gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
  95     var tex3d = gl.createTexture();
  96     gl.bindTexture(gl.TEXTURE_3D, tex3d);
  97     gl.texImage3D(gl.TEXTURE_3D,
  98                   0,                                          // level
  99                   gl.RGBA,                                    // internalFormat
 100                   2,                                          // width
 101                   2,                                          // height
 102                   2,                                          // depth
 103                   0,                                          // border
 104                   gl.RGBA,                                    // format
 105                   gl.UNSIGNED_BYTE,                           // type
 106                   new Uint8Array(4 * 2 * 2 * 2));             // data
 107     gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, tex3d, 0, 0);
 108     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
 109     gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT1, tex3d, 0, 1);
 110     checkFramebuffer([gl.FRAMEBUFFER_COMPLETE]);
 111     gl.framebufferTextureLayer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT2, tex3d, 0, 0);
 112     checkFramebuffer([gl.FRAMEBUFFER_UNSUPPORTED]);
 113
 114     // Clean up
 115     gl.deleteTexture(tex1);
 116     gl.deleteTexture(tex2);
 117     gl.deleteTexture(texCube);
 118     gl.deleteTexture(tex3d);
 119     gl.deleteFramebuffer(fb);
 120 }
 121
 122 description("This tests FRAMEBUFFER_UNSUPPORTED.");
 123
 124 shouldBeNonNull("gl = wtu.create3DContext(undefined, undefined, 2)");
 125
 126 testImageAttachedTwoPoints();
 127
 128 debug("");
 129 var successfullyParsed = true;
 130 </script>
 131 <script src="../../js/js-test-post.js"></script>
 132
 133 </body>
 134 </html>