dom/canvas/test/webgl-conf/checkout/conformance2/buffers/delete-buffer.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 buffer deletion behavior 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 <script>
  20 "use strict";
  21 description("Test buffer deletion behavior.");
  22 // This is a regression test for https://crbug.com/822976
  23
  24 var wtu = WebGLTestUtils;
  25
  26 var gl = wtu.create3DContext(undefined, undefined, 2);
  27 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup.");
  28
  29 function runTexImageTest(gl) {
  30   debug("");
  31   var buffer = gl.createBuffer();
  32   gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer);
  33   gl.bufferData(gl.PIXEL_UNPACK_BUFFER, 4, gl.DYNAMIC_DRAW);
  34   gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, buffer);
  35   gl.deleteBuffer(buffer);
  36   // Indexed uniform buffer bindings should not prevent a buffer from being
  37   // deleted. Therefore, PIXEL_UNPACK_BUFFER binding should also be 0.
  38   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
  39
  40   var tex = gl.createTexture();
  41   gl.bindTexture(gl.TEXTURE_2D, tex);
  42   var data = new Uint8Array(1024);
  43   gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA8, 16, 16, 0,
  44                 gl.RGBA, gl.UNSIGNED_BYTE, data);
  45   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "texImage2D should succeed");
  46
  47   // Clean up bindings just in case an implementation gets it wrong.
  48   gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, null);
  49   gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, null);
  50 }
  51
  52 function runReadPixelsTest(gl) {
  53   debug("");
  54   var buffer = gl.createBuffer();
  55   gl.bindBuffer(gl.PIXEL_PACK_BUFFER, buffer);
  56   gl.bufferData(gl.PIXEL_PACK_BUFFER, 4, gl.DYNAMIC_DRAW);
  57   gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, buffer);
  58   gl.deleteBuffer(buffer);
  59   // Indexed transform feedback buffer bindings should not prevent a buffer
  60   // from being deleted. Therefore, PIXEL_PACK_BUFFER binding should also be 0.
  61   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no error");
  62
  63   var buffer = new Uint8Array(1024);
  64   gl.readPixels(0, 0, 16, 16, gl.RGBA, gl.UNSIGNED_BYTE, buffer);
  65   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "readPixels should succeed");
  66
  67   // Clean up bindings just in case an implementation gets it wrong.
  68   gl.bindBuffer(gl.PIXEL_PACK_BUFFER, null);
  69   gl.bindBufferBase(gl.UNIFORM_BUFFER, 0, null);
  70 }
  71
  72 runTexImageTest(gl);
  73 runReadPixelsTest(gl);
  74
  75 debug("");
  76 var successfullyParsed = true;
  77 </script>
  78 <script src="../../js/js-test-post.js"></script>
  79 </body>
  80 </html>