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authorGravatar Chris Xiong <chirs241097@gmail.com> 2019-02-10 11:16:07 +0800
committerGravatar Chris Xiong <chirs241097@gmail.com> 2019-02-10 11:16:07 +0800
commit9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3 (patch)
tree339de0698c13e1763d3361d70fb1266621025c91 /blog/post/2018-03-17.html
downloadweb-9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3.tar.xz
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+<html><head>
+<meta charset="utf-8">
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+ <li><a href="/"><h1>Chrisoft</h1></a></li>
+ <li><a href="/blog"><h2>Blog</h2></a></li>
+ <li><a href="#"><h3 id="title">Some rants on SMELT, QMidiPlayer and Virtools</h3></a></li>
+ <li><span>Tags</span>
+ <ul id="tagslist">
+ <li><a href="/blog/list/devel/">devel</a></li><li><a href="/blog/list/qmidiplayer/">qmidiplayer</a></li><li><a href="/blog/list/opengl/">opengl</a></li></ul>
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+ <h2 id="titleh" class="TText" style="font-wight:normal;">Some rants on SMELT, QMidiPlayer and Virtools</h2>
+ <div id="datetags" class="TText" style="margin-bottom:1em;">2018-03-17<br>#devel #qmidiplayer #opengl</div>
+ <hr><div id="article" class="TText">
+<article>
+<p>
+Well, I have to admit that creating a new blog post but not writing the
+actual content until more than a month later is <b>bullshit</b>. I've
+almost forgotten what I was thinking about when I created the post...
+</p>
+<p>
+But as you can tell from my recent activity, development of QMidiPlayer
+seemed to be stalled. No new features has been added since the rewrite
+of the MIDI mapper. However the rewrite is actually for the next planned
+major feature: an OPL3 emulator plugin and probably a VST host plugin.
+I spent one third of my winter break on reading the specs of the YMF262
+chip but made no real progress, which is a real shame.
+</p>
+<p>
+As for SMELT, I ported it to OpenGL 3.3+ but this is definitely not in
+my original schedule. The initial port has a whole bunch of bugs and
+quirks, also its performance was poor. Most of these were fixed later on
+with the help of <a href="https://github.com/apitrace/apitrace">apitrace</a>.
+However currently the new port still makes way more OpenGL calls than
+expected.
+</p>
+<p>
+Planned features for SMELT include vertex array switching, material,
+lighting and custom shaders. Adding these features will likely make the
+older version deprecated though. Plus there's no strong demand for these
+features. Therefore they may not be added any time soon.
+</p>
+<p>
+The Virtools part is an entirely accident. 2jjy and I suddenly got excited
+with the Virtools SDK and decided to find out what can it achieve. Before
+long 2jjy managed to analyze the internal structure of a Virtools
+<i>behavior</i>. These data determines how the behavior graph is presented
+in the schemetic interface. Checking 'hide script representation in
+schemetic' while saving simply discards these data, effectively obfuscating
+the script. The final tool we made public reconstructs the base of this
+structure using the logic of the script and tries to arrange behavior
+building blocks in a more human-readable way. It definitely helps future
+analysis of our old pal (Ballance), but not so much in my opinion. Porting
+the custom DLLs used by Ballance to a "newer" Virtools verion might be way
+more important.
+</p>
+<p>
+The tool has been
+<a href="https://github.com/BearKidsTeam/VirtoolsScriptDeobfuscation">made public</a>.
+As the job it does falls into a "grey zone", we don't know whether it is
+legally acceptable to use it. Use at your own risk!
+</p>
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