The Tor Browser: content/canvas/test/webgl-conformance/conformance/context/context-attributes-alpha-depth-stencil-antialias.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-attributes-alpha-depth-stencil-antialias.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-attributes-alpha-depth-stencil-antialias.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">
 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
 <script src="../../resources/js-test-pre.js"></script>
 <script src="../resources/webgl-test.js"></script>
 <script id="vshader" type="x-shader/x-vertex">
 attribute vec3 pos;
 attribute vec4 colorIn;
 varying vec4 color;
 void main()
 {
     color = colorIn;
     gl_Position = vec4(pos.xyz, 1.0);
 }
 </script>
 <script id="fshader" type="x-shader/x-fragment">
 precision mediump float;
 varying vec4 color;
 void main()
 {
     gl_FragColor = color;
 }
 </script>
 <script>
 var successfullyParsed = false;
 // These four declarations need to be global for "shouldBe" to see them
 var webGL = null;
 var contextAttribs = null;
 var pixel = [0, 0, 0, 1];
 var correctColor = null;
 var value;
 function init()
 {
     if (window.initNonKhronosFramework) {
         window.initNonKhronosFramework(true);
     }
     description('Verify WebGLContextAttributes are working as specified, including alpha, depth, stencil, antialias, but not premultipliedAlpha');
     runTest();
 }
 function getWebGL(canvasWidth, canvasHeight, contextAttribs, clearColor, clearDepth, clearStencil)
 {
     var canvas = document.createElement("canvas");
     if (!canvas)
         return null;
     canvas.width = canvasWidth;
     canvas.height = canvasHeight;
     var context = create3DContext(canvas, contextAttribs);
     if (!context)
         return null;
     context.program = createProgram(context, "vshader", "fshader", ["pos", "colorIn"]);
     if (!context.program)
         return null;
     context.useProgram(context.program);
     context.enable(context.DEPTH_TEST);
     context.enable(context.STENCIL_TEST);
     context.disable(context.BLEND);
     context.clearColor(clearColor[0], clearColor[1], clearColor[2], clearColor[3]);
     context.clearDepth(clearDepth);
     context.clearStencil(clearStencil);
     context.clear(context.COLOR_BUFFER_BIT | context.DEPTH_BUFFER_BIT | context.STENCIL_BUFFER_BIT);
     return context;
 }
 function drawAndReadPixel(gl, vertices, colors, x, y)
 {
     var colorOffset = vertices.byteLength;
     var vbo = gl.createBuffer();
     gl.bindBuffer(gl.ARRAY_BUFFER, vbo);
     gl.bufferData(gl.ARRAY_BUFFER, colorOffset + colors.byteLength, gl.STATIC_DRAW);
     gl.bufferSubData(gl.ARRAY_BUFFER, 0, vertices);
     gl.bufferSubData(gl.ARRAY_BUFFER, colorOffset, colors);
     gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
     gl.enableVertexAttribArray(0);
     gl.vertexAttribPointer(1, 4, gl.UNSIGNED_BYTE, true, 0, colorOffset);
     gl.enableVertexAttribArray(1);
     gl.drawArrays(gl.TRIANGLES, 0, vertices.length / 3);
     var buf = new Uint8Array(1 * 1 * 4);
     gl.readPixels(x, y, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, buf);
     return buf;
 }
 function testAlpha(alpha)
 {
     debug("Testing alpha = " + alpha);
     if (alpha)
         shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: true, depth: false, stencil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)");
     else
         shouldBeNonNull("webGL = getWebGL(1, 1, { alpha: false, depth: false, stencil: false, antialias: false }, [ 0, 0, 0, 0 ], 1, 0)");
     shouldBeNonNull("contextAttribs = webGL.getContextAttributes()");
     shouldBeTrue("contextAttribs.alpha == " + alpha);
     var buf = new Uint8Array(1 * 1 * 4);
     webGL.readPixels(0, 0, 1, 1, webGL.RGBA, webGL.UNSIGNED_BYTE, buf);
     pixel[0] = buf[0];
     pixel[1] = buf[1];
     pixel[2] = buf[2];
     pixel[3] = buf[3];
     correctColor = (contextAttribs.alpha ? [0, 0, 0, 0] : [0, 0, 0, 255]);
     shouldBe("pixel", "correctColor");
 }
 function testDepth(depth)
 {
     debug("Testing depth = " + depth);
     if (depth)
         shouldBeNonNull("webGL = getWebGL(1, 1, { stencil: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)");
     else
         shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)");
     shouldBeNonNull("contextAttribs = webGL.getContextAttributes()");
     webGL.depthFunc(webGL.NEVER);
     var vertices = new Float32Array([
 .0,  1.0, 0.0,
         -1.0,  1.0, 0.0,
         -1.0, -1.0, 0.0,
 .0,  1.0, 0.0,
         -1.0, -1.0, 0.0,
 .0, -1.0, 0.0]);
     var colors = new Uint8Array([
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255]);
     var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0);
     pixel[0] = buf[0];
     pixel[1] = buf[1];
     pixel[2] = buf[2];
     pixel[3] = buf[3];
     correctColor = (contextAttribs.depth ? [0, 0, 0, 255] : [255, 0, 0, 255]);
     shouldBe("pixel", "correctColor");
 }
 function testStencil(stencil)
 {
     debug("Testing stencil = " + stencil);
     if (stencil)
         shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: true, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)");
     else
         shouldBeNonNull("webGL = getWebGL(1, 1, { depth: false, stencil: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)");
     shouldBeNonNull("contextAttribs = webGL.getContextAttributes()");
     webGL.depthFunc(webGL.ALWAYS);
     webGL.stencilFunc(webGL.NEVER, 1, 1);
     webGL.stencilOp(webGL.KEEP, webGL.KEEP, webGL.KEEP);
     var vertices = new Float32Array([
 .0, 1.0, 0.0,
         -1.0, 1.0, 0.0,
         -1.0, -1.0, 0.0,
 .0, 1.0, 0.0,
         -1.0, -1.0, 0.0,
 .0, -1.0, 0.0]);
     var colors = new Uint8Array([
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255]);
     var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0);
     pixel[0] = buf[0];
     pixel[1] = buf[1];
     pixel[2] = buf[2];
     pixel[3] = buf[3];
     correctColor = (contextAttribs.stencil ? [0, 0, 0, 255] : [255, 0, 0, 255]);
     shouldBe("pixel", "correctColor");
 }
 function testAntialias(antialias)
 {
     debug("Testing antialias = " + antialias);
     if (antialias)
         shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false, alpha: false, antialias: true }, [ 0, 0, 0, 1 ], 1, 0)");
     else
         shouldBeNonNull("webGL = getWebGL(2, 2, { depth: false, stencil: false, alpha: false, antialias: false }, [ 0, 0, 0, 1 ], 1, 0)");
     shouldBeNonNull("contextAttribs = webGL.getContextAttributes()");
     var vertices = new Float32Array([
 .0, 1.0, 0.0,
         -1.0, 1.0, 0.0,
         -1.0, -1.0, 0.0]);
     var colors = new Uint8Array([
 , 0, 0, 255,
 , 0, 0, 255,
 , 0, 0, 255]);
     var buf = drawAndReadPixel(webGL, vertices, colors, 0, 0);
     pixel[0] = buf[0];
     shouldBe("pixel[0] != 255 && pixel[0] != 0", "contextAttribs.antialias");
 }
 function runTest()
 {
     testAlpha(true);
     testAlpha(false);
     testDepth(true);
     testDepth(false);
     testStencil(true);
     testStencil(false);
     testAntialias(true);
     testAntialias(false);
     finishTest()
 }
 </script>
 </head>
 <body onload="init()">
 <div id="description"></div>
 <div id="console"></div>
 </body>
 </html>

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content/canvas/test/webgl-conformance/conformance/context/context-attributes-alpha-depth-stencil-antialias.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/context/context-attributes-alpha-depth-stencil-antialias.html