WebGL样品与演示

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<p>来源：http://blog.vlad1.com/2009/09/21/webgl-samples/</p>
<p>下载9月18日以后Firefox的Nightly版，在地址栏输入about:config，搜索“webgl”，双击“webgl.enabled_for_all_sites”，将其值从“false”改为“true”。</p>
<p>演示地址：<a href="http://people.mozilla.com/~vladimir/webgl/spore/sporeview.html" target="_blank">http://people.mozilla.com/~vladimir/webgl/spore/sporeview.html</a>
</p>
<p>然而，速度暂时确实慢的有点受不了，起码要等一分钟才能加载并渲染出来。</p>
<p>原文如下：</p>
<p>Since <a href="http://blog.vlad1.com/2009/09/18/webgl-in-firefox-nightly-builds/">my post on Friday</a>
,
we landed a few fixes to improve our WebGL implementation and to fix a
couple of bugs we discovered on Friday. I'm looking forward to seeing
what people do with WebGL, and how it can be useful on the web right
now. For example, EA/Maxis recently added COLLADA export of Creature
designs to their popular game <a href="http://www.spore.com/">Spore</a>
, and they have a <a href="http://www.spore.com/sporepedia">Sporepedia</a>
where players can see others' creations. Right now, those previews are
just as images. With WebGL, they could be fully 3D, even animated.</p>
<p><a href="http://blog.vlad1.com/wp-content/uploads/2009/09/spdemo.png"><img class="alignleft size-full wp-image-201" title="Spore Creature View (thumbnail)" src="http://blog.vlad1.com/wp-content/uploads/2009/09/spdemo-thumb.jpg" alt="Spore Creature View (thumbnail)" width="306" height="288"></a>
Over the weekend I've put together <a href="http://people.mozilla.com/%7Evladimir/webgl/spore/sporeview.html">this example</a>
,
which uses WebGL to render an exported Spore creature, and let the user
rotate the 3D model to view it from different angles. For those who
want to try it out, you'll need a recent Firefox nightly (one from
today, September 21, or newer), and with one preference flipped as
described in <a href="http://blog.vlad1.com/2009/09/18/webgl-in-firefox-nightly-builds/">this post</a>
.</p>
<p>I'll be working to update the very basic "<a href="http://people.mozilla.com/%7Evladimir/canvas3d/examples/gles2book/">getting started</a>
"
demos from the GL ES 2 book that I ported to Canvas 3D as well, so that
those who are interested in experimenting can have some good basic code
to look at. They're not updated yet, but they should be in the next
day or two.</p>
<p>For those of you on Windows who don't have an up to date OpenGL
driver, or don't have the possibility of getting one (e.g. many common
Intel graphics cards doesn't have OpenGL drivers), you can enable
software rendering by downloading a Windows build of the Mesa software
OpenGL implementation. It won't be fast, but it should be enough for
you to get an idea of what's going on, and to play with some of the
demos. To use it, download <a href="http://people.mozilla.com/%7Evladimir/webgl/webgl-mesa-751.zip">webgl-mesa-751.zip</a>
and extract it somewhere on your computer. It has a single file,
OSMESA32.DLL, that you need to tell Firefox where to find: open up
about:config, and set the preference <em>webgl.osmesalib</em>
to the
path of OSMESA32.DLL. If you extracted it to "C:/temp", you would put
in "C:/temp/osmesa32.dll" in the pref. Then, flip <em>webgl.software_rendering</em>
to true, and you should be good to go.</p>
<p>(Mac OS X users shouldn't need to bother with software rendering,
since Apple already provides a high quality OpenGL implementation, and
Linux users should be ok as long as they have recent OpenGL drivers
installed.)</p>
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