The Tor Browser: content/canvas/test/webgl-conformance/conformance/textures/texture-mips.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/textures/texture-mips.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/textures/texture-mips.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 texture mips conformance test.</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>
 <script src="../resources/webgl-test-utils.js"></script>
 </head>
 <body>
 <canvas id="example" width="2" height="2" style="width: 40px; height: 40px;"></canvas>
 <div id="description"></div>
 <div id="console"></div>
 <script id="vshader" type="x-shader/x-vertex">
 uniform vec4 uMult;
 attribute vec4 vPosition;
 attribute vec2 texCoord0;
 varying vec2 texCoord;
 void main()
 {
     gl_Position = vPosition * uMult;
     texCoord = texCoord0;
 }
 </script>
 <script id="fshader" type="x-shader/x-fragment">
 precision mediump float;
 uniform sampler2D tex;
 varying vec2 texCoord;
 void main()
 {
     gl_FragColor = texture2D(tex, texCoord);
 }
 </script>
 <script>
 var canvas;
 var wtu = WebGLTestUtils;
 function init()
 {
   if (window.initNonKhronosFramework) {
     window.initNonKhronosFramework(false);
   }
   description("Checks mip issues");
   canvas = document.getElementById("example");
   shouldBe("canvas.width", "2");
   shouldBe("canvas.height", "2");
   gl = wtu.create3DContext(canvas);
   wtu.setupUnitQuad(gl, 0, 1);
   var program = wtu.setupProgram(
       gl, ['vshader', 'fshader'], ['vPosition', 'texCoord0'], [0, 1]);
   gl.disable(gl.DEPTH_TEST);
   gl.disable(gl.BLEND);
   var colors = {
     blue: [0, 0, 255, 255],
     red: [255, 0, 0, 255],
     green:  [0, 255, 0, 255],
     cyan: [128, 255, 255, 255],
     black: [0, 0, 0, 255]
   };
   var mips = [
   ];
   var texLoc = gl.getUniformLocation(program, "tex");
   gl.uniform1i(texLoc, 0);
   var multLoc = gl.getUniformLocation(program, "uMult");
   // ----------------------------------------------------
   var tex = createTexture();
   gl.uniform4f(multLoc, 1, 1, 1, 1);
   gl.bindTexture(gl.TEXTURE_2D, tex);
   // 16x16 texture no mips
   fillLevel(tex, 0, 16, 'cyan');
   check('black',
         "texture that is missing mips when TEXTURE_MIN_FILTER not NEAREST or LINEAR");
   generateMipmap();
   check('cyan', "texture that has all mips");
   // Fill in the bottom 2 mips with a different color.
   fillLevel(tex, 4, 1, 'green');
   fillLevel(tex, 3, 2, 'green');
   // Choose the nearest mip
   texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
   check('green', "texture that is only using the smallest 2 mips");
   gl.uniform4f(multLoc, 16, 16, 1, 1);
   check('cyan', "texture that is using only the largest 2 mips");
   // Set the top level
   fillLevel(tex, 0, 1, 'red');
   check('red',
         "texture that is only using the top level even though other levels are defined");
   // Set the top 2 levels using generateMipmap
   fillLevel(tex, 0, 2, 'blue');
   generateMipmap();
   check('blue',
         "texture that is only using the top 2 levels even though other levels are defined");
   // Set the top 2 levels back to sizes that end up using levels 2, 3, and 4 again.
   fillLevel(tex, 0, 16, 'blue');
   fillLevel(tex, 1, 8, 'blue');
   check('blue', "texture that is only using the largest 2 mips");
   gl.uniform4f(multLoc, 1, 1, 1, 1);
   check('green', "texture that is only using the smallest 2 mips");
   // ----------------------------------------------------
   var tex = createTexture();
   gl.uniform4f(multLoc, 1, 1, 1, 1);
   fillLevel(tex, 0, 8, 'cyan');
   generateMipmap();
   check('cyan', "texture that has 3 mips");
   fillLevel(tex, 0, 16, 'blue');
   texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR);
   check('blue', "texture that is only using top mips");
   fillLevel(tex, 0, 8, 'red');
   texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_NEAREST);
   check('cyan', "texture that is only using smallest mips");
   gl.uniform4f(multLoc, 16, 16, 1, 1);
   check('red', "texture that is using only the largest mip");
   // ----------------------------------------------------
   var tex = createTexture();
   gl.uniform4f(multLoc, 1, 1, 1, 1);
   fillLevel(tex, 2, 1, 'green');
   fillLevel(tex, 1, 2, 'green');
   fillLevel(tex, 0, 4, 'green');
   check('green', "texture that was built smallest mip first");
   // ----------------------------------------------------
   var tex = createTexture();
   gl.uniform4f(multLoc, 1, 1, 1, 1);
   fillLevel(tex, 0, 16, 'red');
   generateMipmap();
   check('red', "texture with 1 genmipmaps");
   fillLevel(tex, 0, 16, 'blue');
   generateMipmap();
   fillLevel(tex, 0, 16, 'green');
   generateMipmap();
   check('green', "texture with 2 genmipmaps");
   // ----------------------------------------------------
   glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors.");
   function createTexture() {
     debug("<hr/>gl.createTexture()");
     mips = [];
     makeDivMipChain();
     return gl.createTexture();
   }
   function texParameteri(target, pname, value) {
 	debug("gl.texParameteri(" +
           wtu.glEnumToString(gl, target) + ", " +
           wtu.glEnumToString(gl, pname) + ", " +
           wtu.glEnumToString(gl, value) + ")")
 	gl.texParameteri(target, pname, value);
   }
   function generateMipmap() {
     debug("gl.genreateMipmap(gl.TEXTURE_2D)");
     gl.generateMipmap(gl.TEXTURE_2D);
     var mip0 = mips[0];
     var size = mip0.size;
     var level = 1;
     for(;;) {
       size = Math.floor(size / 2);
       if (!size) {
         break;
       }
       setMipData(level, size, mip0.color);
       ++level;
     }
     makeDivMipChain();
   }
   function check(color, msg) {
     wtu.drawQuad(gl);
     wtu.checkCanvas(gl, colors[color], msg + " should draw with " + color);
   }
   function fillLevel(tex, level, size, color) {
     setMipData(level, size, color);
     debug("gl.texImage2D(gl.TEXTURE_2D, " + level + ", gl.RGBA, " + size + ", " + size +
           ", 0, gl.RGBA, gl.UNSIGNED_BYTE, " + color + ");");
     wtu.fillTexture(gl, tex, size, size, colors[color], level);
     makeDivMipChain();
   }
   function setMipData(level, size, color) {
     mips[level] = {
       size: size,
       color: color
     };
   }
   function makeDivMipChain(color) {
     var html = [
       '<div style="height: 68px; margin-top: 5px">',
       '<div style="float:left;">mips: </div>'];
     for (var ii = 0; ii < 5; ++ii) {
       var mip = mips[ii];
       if (mip) {
         html.push(makeDivSquare(mip.size, mip.color));
       } else {
         html.push(makeDivSquare(16, undefined));
       }
     }
     html.push("</div>");
     debug(html.join(""));
   }
   function makeDivSquare(size, color) {
     size *= 4;
     var c = color ? colors[color] : [255,255,255];
     var border = color ? 'solid' : 'dashed';
     return '<div style="float:left; width: ' + size + 'px; height: ' + size +
            'px; background-color: ' + rgb(c) +
            '; border: 1px ' + border + ' black; margin-right: 3px;"></div>';
   }
   function rgb(c) {
     return 'rgb(' + c[0] + ',' + c[1] + ',' + c[2] +')';
   }
 }
 init();
 successfullyParsed = true;
 </script>
 <script>finishTest();</script>
 </body>
 </html>

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content/canvas/test/webgl-conformance/conformance/textures/texture-mips.html@deefc01c0e14 (annotated)

content/canvas/test/webgl-conformance/conformance/textures/texture-mips.html