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Miku mikudance on-fxos-20130828
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Takashi Yasukawa
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Miku mikudance on-fxos-20130828
1.
MikuMikuDance on FxOS
2.
アジェンダ • 自己紹介 • 前回のハイライトと反省 •
WebGLを使う際の注意点 • MMDをWebGL動かす – PC – KEON – Nexus S
3.
自己紹介 • @inuchin • 表→ブリリアントサービス所属 •
裏→ディーワード代表 • 3D歴 おおよそ15年
4.
こんなん作ってました
5.
前回のハイライトと反省 • 第2回での発表は、3Dを触ってない人向けに さわりの部分だけだったので、物足りない、と いう意見が出てた • 今回は振り切ります
6.
前回のハイライトと反省 three.js http://threejs.org/
7.
8.
WebGLを使う際の注意点 • Khronos.orgにある「WebGL and
OpenGL Differrences」を参照 http://www.khronos.org/webgl/wiki/WebGL_and_OpenGL_Differences • 2のべき乗に関する制限(Non-Power-Of-Two) • 頂点データセマンティクスの制限 • doubleが使えない • 3DTexureが使えない • texture2DLodが頂点シェーダでしか使えない • フラグメントシェーダーの精度はGPU依存
9.
MMDをWebGLで動かす • MMD.jsを借りてきてドヤ顔します https://github.com/edvakf/MMD.js – PMD/VMDに対応 –
トゥーンシェーダー(CLUT) – セルフシャドウ(PSM) • モデルは「つみだんご」氏のぜかましちゃんを お借りしています
10.
PCのWebGLで動かしてみる
11.
KEONで動かす • 動きません • V1.1では完全にハングアップ •
Nightlyを入れると、ハングアップはしないもの の、画面にポリゴンは表示されない
12.
Nexus Sで動かす • 遅いですが動作はします •
負荷はレンダリングよりもIK処理の模様 • Javascript JITが無いとか? • asm.jsとかが使えれば早くなりそうな予感
13.
どこが遅いのか • なんとなく行列計算かな(モーション) • フラグメントシェーダーがリッチかも •
Windowsだからー(Mac上のFFの方が早い) • モデルが重すぎ
14.
ありがとうございました
Download now