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diff --git a/blog/post/2018-03-17.html b/blog/post/2018-03-17.html new file mode 100644 index 0000000..aa9734f --- /dev/null +++ b/blog/post/2018-03-17.html @@ -0,0 +1,172 @@ +<html><head> +<meta charset="utf-8"> +<meta name="viewport" content="width=device-width,initial-scale=1"> +<meta name="theme-color" content="#000000"> +<title>Chrisoft::Blog</title> +<script type="text/javascript" src="/panel.js"></script> +<script type="text/javascript" src="/blog/footnoter.js"></script> +<script type="text/javascript" src="/blog/aes-js.js"></script> +<script type="text/javascript" src="/blog/scrypt.js"></script> +<script type="text/javascript" src="/blog/sha256.js"></script> +<script type="text/javascript" src="/blog/decryptor.js"></script> +<link rel="stylesheet" type="text/css" href="/common.css"> +<link rel="stylesheet" type="text/css" href="/panel.css"> +<link rel="stylesheet" type="text/css" href="/theme0a.css" id="theme0a"> +<link rel="stylesheet" type="text/css" href="/theme0b.css" id="theme0b"> +<link rel="stylesheet" type="text/css" href="/theme1a.css" id="theme1a"> +<link rel="stylesheet" type="text/css" href="/theme1b.css" id="theme1b"> +<link rel="stylesheet" type="text/css" href="/theme2a.css" id="theme2a"> +<link rel="stylesheet" type="text/css" href="/theme2b.css" id="theme2b"> +<link rel="stylesheet" type="text/css" href="/theme3a.css" id="theme3a"> +<link rel="stylesheet" type="text/css" href="/theme3b.css" id="theme3b"> +<link rel="stylesheet" type="text/css" href="/blog/blogext.css"> +<script> +function ol() +{ + window.onresize=function() + { + if(window.innerWidth<768) + setupevents(); + else unsetevents(); + } + window.onresize(); + _decryptonload(); +} +function loadTheme(){ + var thm=document.cookie.replace(new RegExp("(?:(?:^|.*;\\s*)thm\\s*\\=\\s*([^;]*).*$)|^.*$"),"$1"); + if(thm.length<2||'0123z'.indexOf(thm[0])==-1||'abz'.indexOf(thm[1])==-1)thm='zz'; + var ent=""; + var d=new Date(); + if(thm[0]=='z') + { + var m=d.getMonth()+1; + if(m>=3&&m<6)thm='0'+thm[1]; + else if(m>=6&&m<9)thm='1'+thm[1]; + else if(m>=9&&m<12)thm='2'+thm[1]; + else thm='3'+thm[1]; + } + if(thm[1]=='z') + {if(d.getHours()>=18||d.getHours()<6)thm=thm[0]+'b';else thm=thm[0]+'a';} + ent=`theme${thm}`; + var R=new RegExp('theme[0-4][ab]'); + for(var i=0;i<document.styleSheets.length;++i) + { + if(R.exec(document.styleSheets[i].ownerNode.id)!==null&&document.styleSheets[i].ownerNode.id!=ent) + document.styleSheets[i].disabled=true; + else document.styleSheets[i].disabled=false; + } + var thmcolor=""; + switch(thm[0]) + { + case '0':thmcolor=thm[1]=='a'?'#f59dda':'#2f0933';break; + case '1':thmcolor=thm[1]=='a'?'#9df59d':'#090933';break; + case '2':thmcolor=thm[1]=='a'?'#edb47b':'#1f1205';break; + case '3':thmcolor=thm[1]=='a'?'#a0cdfa':'#051933';break; + } + document.querySelector("meta[name=theme-color]").setAttribute('content',thmcolor); +} +loadTheme(); +</script> +</head> +<body onload="ol()" style="overflow-x:hidden;"> + <div id="panel" class="TText"> + <ul id="panellist"> + <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> + </li> + <li id="tocouter" style="display: none;"> + <span>Table of Contents</span> + <ul id="tocroot"> + </ul> + </li> + <li style="margin-left:-0.5em"><a id="prevp" href="2018-02-05.html">Prev post</a></li> + <li style="margin-left:-0.5em"><a id="nextp" href="2018-04-17.html">Next post</a></li> + </ul> + </div> + <div id="content"> + <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. 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