content/canvas/test/webgl-conformance/conformance/rendering/triangle.html

Thu, 15 Jan 2015 21:03:48 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 21:03:48 +0100
branch
TOR_BUG_9701
changeset 11
deefc01c0e14
permissions
-rw-r--r--

Integrate friendly tips from Tor colleagues to make (or not) 4.5 alpha 3;
This includes removal of overloaded (but unused) methods, and addition of
a overlooked call to DataStruct::SetData(nsISupports, uint32_t, bool.)

     1 <!--
     2 Copyright (C) 2011 Apple Computer, Inc.  All rights reserved.
     4 Redistribution and use in source and binary forms, with or without
     5 modification, are permitted provided that the following conditions
     6 are met:
     7 1. Redistributions of source code must retain the above copyright
     8    notice, this list of conditions and the following disclaimer.
     9 2. Redistributions in binary form must reproduce the above copyright
    10    notice, this list of conditions and the following disclaimer in the
    11    documentation and/or other materials provided with the distribution.
    13 THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
    14 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    15 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    16 PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
    17 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
    18 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
    19 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
    20 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
    21 OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    22 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    23 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    24 -->
    26 <!DOCTYPE html>
    27 <html>
    28   <head>
    29 <meta charset="utf-8">
    30     <title>Rendering Test</title>
    31     <link rel="stylesheet" href="../../resources/js-test-style.css"/>
    32     <script src="../../resources/js-test-pre.js"></script>
    33     <script src="../resources/webgl-test.js"> </script>
    34 </head>
    35 <body>
    36 <canvas id="example" width="50" height="50">
    37 There is supposed to be an example drawing here, but it's not important.
    38 </canvas>
    39 <div id="description"></div>
    40 <div id="console"></div>
    41     <script id="vshader" type="x-shader/x-vertex">
    42         attribute vec4 vPosition;
    43         void main()
    44         {
    45             gl_Position = vPosition;
    46         }
    47     </script>
    49     <script id="fshader" type="x-shader/x-fragment">
    50         void main()
    51         {
    52             gl_FragColor = vec4(1.0,0.0,0.0,1.0);
    53         }
    54     </script>
    56     <script>
    57         function fail(x,y, buf, shouldBe)
    58         {
    59             var i = (y*50+x) * 4;
    60             var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe;
    61             testFailed(reason);
    62         }
    64         function pass()
    65         {
    66             testPassed("drawing is correct");
    67         }
    69         function init()
    70         {
    71             if (window.initNonKhronosFramework) {
    72                 window.initNonKhronosFramework(false);
    73             }
    75             description(document.title);
    77             gl = initWebGL("example", "vshader", "fshader", [ "vPosition"], [ 0, 0, 0, 1 ], 1);
    79             var vertexObject = gl.createBuffer();
    80             gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
    81             gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
    82             gl.enableVertexAttribArray(0);
    83             gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
    85             gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
    86             gl.drawArrays(gl.TRIANGLES, 0, 3);
    88             var buf = new Uint8Array(50 * 50 * 4);
    89             gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE, buf);
    91             // Test several locations
    92             // First line should be all black
    93             for (var i = 0; i < 50; ++i)
    94                 if (buf[i*4] != 0 || buf[i*4+1] != 0 || buf[i*4+2] != 0 || buf[i*4+3] != 255) {
    95                     fail(i, 0, buf, "(0,0,0,255)");
    96                     return;
    97                 }
    99             // Line 15 should be red for at least 10 red pixels starting 20 pixels in
   100             var offset = (15*50+20) * 4;
   101             for (var i = 0; i < 10; ++i)
   102                 if (buf[offset+i*4] != 255 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) {
   103                     fail(20 + i, 15, buf, "(255,0,0,255)");
   104                     return;
   105                 }
   106             // Last line should be all black
   107             offset = (49*50) * 4;
   108             for (var i = 0; i < 50; ++i)
   109                 if (buf[offset+i*4] != 0 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] != 0 || buf[offset+i*4+3] != 255) {
   110                     fail(i, 49, buf, "(0,0,0,255)");
   111                     return;
   112                 }
   114             pass();
   115        }
   117        init();
   118        successfullyParsed = true;
   119     </script>
   120 <script>finishTest();</script>
   122 </body>
   123 </html>

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