The Tor Browser: content/canvas/test/webgl-conformance/conformance/programs/gl-bind-attrib-location-test.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/programs/gl-bind-attrib-location-test.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/programs/gl-bind-attrib-location-test.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.)

 <!--
 Copyright (c) 2011 The Chromium Authors. All rights reserved.
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
  -->
 <!DOCTYPE html>
 <html>
 <head>
 <meta charset="utf-8">
 <title>WebGL BindAttribLocation Conformance Tests</title>
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 </head>
 <body>
 <div id="description"></div>
 <div id="console"></div>
 <canvas style="border: 1px solid black;" id="canvas" width="50" height="50"></canvas>
 <script id="vshader" type="text/something-not-javascript">
 attribute vec4 vPosition;
 attribute vec4 vColor;
 varying vec4 color;
 void main()
 {
   gl_Position = vPosition;
   color = vColor;
 }
 </script>
 <script id="fshader" type="text/something-not-javascript">
 precision mediump float;
 varying vec4 color;
 void main()
 {
   gl_FragColor = color;
 }
 </script>
 <script>
 description("This test ensures WebGL implementations don't allow names that start with 'gl_' when calling bindAttribLocation.");
 debug("");
 debug("Canvas.getContext");
 var gl = create3DContext(document.getElementById("canvas"));
 shouldBeNonNull("gl");
 function fail(x,y, buf, shouldBe)
 {
   var i = (y*50+x) * 4;
   var reason = "pixel at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe;
   testFailed(reason);
 }
 function pass()
 {
   testPassed("drawing is correct");
 }
 function loadShader(shaderType, shaderId) {
   // Get the shader source.
   var shaderSource = document.getElementById(shaderId).text;
   // Create the shader object
   var shader = gl.createShader(shaderType);
   if (shader == null) {
     debug("*** Error: unable to create shader '"+shaderId+"'");
     return null;
   }
   // Load the shader source
   gl.shaderSource(shader, shaderSource);
   // Compile the shader
   gl.compileShader(shader);
   // Check the compile status
   var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
   if (!compiled) {
     // Something went wrong during compilation; get the error
     var error = gl.getShaderInfoLog(shader);
     debug("*** Error compiling shader '"+shader+"':"+error);
     gl.deleteShader(shader);
     return null;
   }
   return shader;
 }
 debug("");
 debug("Checking gl.bindAttribLocation.");
 var program = gl.createProgram();
 gl.bindAttribLocation(program, 0, "gl_foo");
 glErrorShouldBe(gl, gl.INVALID_OPERATION,
     "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");
 gl.bindAttribLocation(program, 0, "gl_TexCoord0");
 glErrorShouldBe(gl, gl.INVALID_OPERATION,
     "bindAttribLocation should return INVALID_OPERATION if name starts with 'gl_'");
 var vs = loadShader(gl.VERTEX_SHADER, "vshader");
 var fs = loadShader(gl.FRAGMENT_SHADER, "fshader");
 gl.attachShader(program, vs);
 gl.attachShader(program, fs);
 var positions = gl.createBuffer();
 gl.bindBuffer(gl.ARRAY_BUFFER, positions);
 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
 var colors = gl.createBuffer();
 gl.bindBuffer(gl.ARRAY_BUFFER, colors);
 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([
 ,1,0,1,
 ,1,0,1,
 ,1,0,1]), gl.STATIC_DRAW);
 function setBindLocations(colorLocation, positionLocation) {
   gl.bindAttribLocation(program, positionLocation, "vPosition");
   gl.bindAttribLocation(program, colorLocation, "vColor");
   gl.linkProgram(program);
   gl.useProgram(program);
   var linked = (gl.getProgramParameter(program, gl.LINK_STATUS) != 0);
   assertMsg(linked, "program linked successfully");
   debug("vPosition:" + gl.getAttribLocation(program, "vPosition"))
   debug("vColor   :" + gl.getAttribLocation(program, "vColor"))
   assertMsg(gl.getAttribLocation(program, "vPosition") == positionLocation,
             "location of vPosition should be " + positionLocation);
   assertMsg(gl.getAttribLocation(program, "vColor") == colorLocation,
             "location of vColor should be " + colorLocation);
   var ploc = gl.getAttribLocation(program, "vPosition");
   var cloc = gl.getAttribLocation(program, "vColor");
   gl.bindBuffer(gl.ARRAY_BUFFER, positions);
   gl.enableVertexAttribArray(positionLocation);
   gl.vertexAttribPointer(positionLocation, 3, gl.FLOAT, false, 0, 0);
   gl.bindBuffer(gl.ARRAY_BUFFER, colors);
   gl.enableVertexAttribArray(colorLocation);
   gl.vertexAttribPointer(colorLocation, 4, gl.FLOAT, false, 0, 0);
 }
 function checkDraw(colorLocation, positionLocation, r, g, b, a) {
   gl.clearColor(0, 0, 0, 1);
   gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
   gl.drawArrays(gl.TRIANGLES, 0, 3);
   var width = 50;
   var height = 50;
   var buf = new Uint8Array(width * height * 4);
   gl.readPixels(0, 0, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buf);
   function checkPixel(x, y, r, g, b, a) {
     var offset = (y * width + x) * 4;
     if (buf[offset + 0] != r ||
         buf[offset + 1] != g ||
         buf[offset + 2] != b ||
         buf[offset + 3] != a) {
         fail(x, y, buf, "(" + r + "," + g + "," + b + "," + a + ")");
         return false;
     }
     return true;
   }
   // Test several locations
   // First line should be all black
   var success = true;
   for (var i = 0; i < 50; ++i)
     success = success && checkPixel(i, 0, 0, 0, 0, 255);
   // Line 15 should be red for at least 10 rgba pixels starting 20 pixels in
   var offset = (15 * 50 + 20) * 4;
   for (var i = 0; i < 10; ++i)
     success = success && checkPixel(20 + i, 15, r, g, b, a);
   // Last line should be all black
   for (var i = 0; i < 50; ++i)
     success = success && checkPixel(i, 49, 0, 0, 0, 255);
   if (success)
     pass();
   gl.disableVertexAttribArray(positionLocation);
   gl.disableVertexAttribArray(colorLocation);
 }
 setBindLocations(2, 3);
 checkDraw(2, 3, 0, 255, 0, 255);
 setBindLocations(0, 3);
 gl.disableVertexAttribArray(0);
 gl.vertexAttrib4f(0, 1, 0, 0, 1);
 checkDraw(0, 3, 255, 0, 0, 255);
 glErrorShouldBe(gl, gl.NO_ERROR);
 debug("");
 successfullyParsed = true;
 </script>
 <script>finishTest();</script>
 </body>
 </html>

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content/canvas/test/webgl-conformance/conformance/programs/gl-bind-attrib-location-test.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/programs/gl-bind-attrib-location-test.html