Introduction.html (21524B)
1 <!DOCTYPE html> 2 <html lang="ja"> 3 <head> 4 <meta charset="utf-8"/> 5 <title>LearnOpenGL</title> 6 <link rel="shortcut icon" type="image/ico" href="/favicon.ico" /> 7 <link rel="stylesheet" href="../static/style.css" /> 8 <script id="MathJax-script" async src="https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-chtml.js"> </script> 9 <script src="/static/functions.js"></script> 10 </head> 11 <body> 12 <nav> 13 <ol> 14 <li id="Introduction"> 15 <a href="https://learnopengl.com/Introduction">はじめに</a> 16 </li> 17 <li id="Getting-started"> 18 <span class="closed">入門</span> 19 <ol> 20 <li id="Getting-started/OpenGL"> 21 <a href="https://learnopengl.com/Getting-started/OpenGL">OpenGL </a> 22 </li> 23 <li id="Getting-started/Creating-a-window"> 24 <a href="https://learnopengl.com/Getting-started/Creating-a-window">ウィンドウの作成</a> 25 </li> 26 <li id="Getting-started/Hello-Window"> 27 <a href="https://learnopengl.com/Getting-started/Hello-Window">最初のウィンドウ</a> 28 </li> 29 <li id="Getting-started/Hello-Triangle"> 30 <a href="https://learnopengl.com/Getting-started/Hello-Triangle">最初の三角形</a> 31 </li> 32 <li id="Getting-started/Shaders"> 33 <a href="https://learnopengl.com/Getting-started/Shaders">シェーダー</a> 34 </li> 35 <li id="Getting-started/Textures"> 36 <a href="https://learnopengl.com/Getting-started/Textures">テクスチャ</a> 37 </li> 38 <li id="Getting-started/Transformations"> 39 <a href="https://learnopengl.com/Getting-started/Transformations">座標変換</a> 40 </li> 41 <li id="Getting-started/Coordinate-Systems"> 42 <a href="https://learnopengl.com/Getting-started/Coordinate-Systems">座標系</a> 43 </li> 44 <li id="Getting-started/Camera"> 45 <a href="https://learnopengl.com/Getting-started/Camera">カメラ</a> 46 </li> 47 <li id="Getting-started/Review"> 48 <a href="https://learnopengl.com/Getting-started/Review">まとめ</a> 49 </li> 50 </ol> 51 </li> 52 <li id="Lighting"> 53 <span class="closed">Lighting </span> 54 <ol> 55 <li id="Lighting/Colors"> 56 <a href="https://learnopengl.com/Lighting/Colors">Colors </a> 57 </li> 58 <li id="Lighting/Basic-Lighting"> 59 <a href="https://learnopengl.com/Lighting/Basic-Lighting">Basic Lighting </a> 60 </li> 61 <li id="Lighting/Materials"> 62 <a href="https://learnopengl.com/Lighting/Materials">Materials </a> 63 </li> 64 <li id="Lighting/Lighting-maps"> 65 <a href="https://learnopengl.com/Lighting/Lighting-maps">Lighting maps </a> 66 </li> 67 <li id="Lighting/Light-casters"> 68 <a href="https://learnopengl.com/Lighting/Light-casters">Light casters </a> 69 </li> 70 <li id="Lighting/Multiple-lights"> 71 <a href="https://learnopengl.com/Lighting/Multiple-lights">Multiple lights </a> 72 </li> 73 <li id="Lighting/Review"> 74 <a href="https://learnopengl.com/Lighting/Review">Review </a> 75 </li> 76 </ol> 77 </li> 78 <li id="Model-Loading"> 79 <span class="closed">Model Loading </span> 80 <ol> 81 <li id="Model-Loading/Assimp"> 82 <a href="https://learnopengl.com/Model-Loading/Assimp">Assimp </a> 83 </li> 84 <li id="Model-Loading/Mesh"> 85 <a href="https://learnopengl.com/Model-Loading/Mesh">Mesh </a> 86 </li> 87 <li id="Model-Loading/Model"> 88 <a href="https://learnopengl.com/Model-Loading/Model">Model </a> 89 </li> 90 </ol> 91 </li> 92 <li id="Advanced-OpenGL"> 93 <span class="closed">Advanced OpenGL </span> 94 <ol> 95 <li id="Advanced-OpenGL/Depth-testing"> 96 <a href="https://learnopengl.com/Advanced-OpenGL/Depth-testing">Depth testing </a> 97 </li> 98 <li id="Advanced-OpenGL/Stencil-testing"> 99 <a href="https://learnopengl.com/Advanced-OpenGL/Stencil-testing">Stencil testing </a> 100 </li> 101 <li id="Advanced-OpenGL/Blending"> 102 <a href="https://learnopengl.com/Advanced-OpenGL/Blending">Blending </a> 103 </li> 104 <li id="Advanced-OpenGL/Face-culling"> 105 <a href="https://learnopengl.cm/Advanced-OpenGL/Face-culling">Face culling </a> 106 </li> 107 <li id="Advanced-OpenGL/Framebuffers"> 108 <a href="https://learnopengl.com/Advanced-OpenGL/Framebuffers">Framebuffers </a> 109 </li> 110 <li id="Advanced-OpenGL/Cubemaps"> 111 <a href="https://learnopengl.com/Advanced-OpenGL/Cubemaps">Cubemaps </a> 112 </li> 113 <li id="Advanced-OpenGL/Advanced-Data"> 114 <a href="https://learnopengl.com/Advanced-OpenGL/Advanced-Data">Advanced Data </a> 115 </li> 116 <li id="Advanced-OpenGL/Advanced-GLSL"> 117 <a href="https://learnopengl.com/Advanced-OpenGL/Advanced-GLSL">Advanced GLSL </a> 118 </li> 119 <li id="Advanced-OpenGL/Geometry-Shader"> 120 <a href="https://learnopengl.com/Advanced-OpenGL/Geometry-Shader">Geometry Shader </a> 121 </li> 122 <li id="Advanced-OpenGL/Instancing"> 123 <a href="https://learnopengl.com/Advanced-OpenGL/Instancing">Instancing </a> 124 </li> 125 <li id="Advanced-OpenGL/Anti-Aliasing"> 126 <a href="https://learnopengl.com/Advanced-OpenGL/Anti-Aliasing">Anti Aliasing </a> 127 </li> 128 </ol> 129 </li> 130 <li id="Advanced-Lighting"> 131 <span class="closed">Advanced Lighting </span> 132 <ol> 133 <li id="Advanced-Lighting/Advanced-Lighting"> 134 <a href="https://learnopengl.com/Advanced-Lighting/Advanced-Lighting">Advanced Lighting </a> 135 </li> 136 <li id="Advanced-Lighting/Gamma-Correction"> 137 <a href="https://learnopengl.com/Advanced-Lighting/Gamma-Correction">Gamma Correction </a> 138 </li> 139 <li id="Advanced-Lighting/Shadows"> 140 <span class="closed">Shadows </span> 141 <ol> 142 <li id="Advanced-Lighting/Shadows/Shadow-Mapping"> 143 <a href="https://learnopengl.com/Advanced-Lighting/Shadows/Shadow-Mapping">Shadow Mapping </a> 144 </li> 145 <li id="Advanced-Lighting/Shadows/Point-Shadows"> 146 <a href="https://learnopengl.com/Advanced-Lighting/Shadows/Point-Shadows">Point Shadows </a> 147 </li> 148 </ol> 149 </li> 150 <li id="Advanced-Lighting/Normal-Mapping"> 151 <a href="https://learnopengl.com/Advanced-Lighting/Normal-Mapping">Normal Mapping </a> 152 </li> 153 <li id="Advanced-Lighting/Parallax-Mapping"> 154 <a href="https://learnopengl.com/Advanced-Lighting/Parallax-Mapping">Parallax Mapping </a> 155 </li> 156 <li id="Advanced-Lighting/HDR"> 157 <a href="https://learnopengl.com/Advanced-Lighting/HDR">HDR </a> 158 </li> 159 <li id="Advanced-Lighting/Bloom"> 160 <a href="https://learnopengl.com/Advanced-Lighting/Bloom">Bloom </a> 161 </li> 162 <li id="Advanced-Lighting/Deferred-Shading"> 163 <a href="https://learnopengl.com/Advanced-Lighting/Deferred-Shading">Deferred Shading </a> 164 </li> 165 <li id="Advanced-Lighting/SSAO"> 166 <a href="https://learnopengl.com/Advanced-Lighting/SSAO">SSAO </a> 167 </li> 168 </ol> 169 </li> 170 <li id="PBR"> 171 <span class="closed">PBR </span> 172 <ol> 173 <li id="PBR/Theory"> 174 <a href="https://learnopengl.com/PBR/Theory">Theory </a> 175 </li> 176 <li id="PBR/Lighting"> 177 <a href="https://learnopengl.com/PBR/Lighting">Lighting </a> 178 </li> 179 <li id="PBR/IBL"> 180 <span class="closed">IBL </span> 181 <ol> 182 <li id="PBR/IBL/Diffuse-irradiance"> 183 <a href="https://learnopengl.com/PBR/IBL/Diffuse-irradiance">Diffuse irradiance </a> 184 </li> 185 <li id="PBR/IBL/Specular-IBL"> 186 <a href="https://learnopengl.com/PBR/IBL/Specular-IBL">Specular IBL </a> 187 </li> 188 </ol> 189 </li> 190 </ol> 191 </li> 192 <li id="In-Practice"> 193 <span class="closed">In Practice </span> 194 <ol> 195 <li id="In-Practice/Debugging"> 196 <a href="https://learnopengl.com/In-Practice/Debugging">Debugging </a> 197 </li> 198 <li id="In-Practice/Text-Rendering"> 199 <a href="https://learnopengl.com/In-Practice/Text-Rendering">Text Rendering </a> 200 </li> 201 <li id="In-Practice/2D-Game"> 202 <span class="closed">2D Game </span> 203 <ol> 204 <li id="In-Practice/2D-Game/Breakout"> 205 <a href="https://learnopengl.com/In-Practice/2D-Game/Breakout">Breakout </a> 206 </li> 207 <li id="In-Practice/2D-Game/Setting-up"> 208 <a href="https://learnopengl.com/In-Practice/2D-Game/Setting-up">Setting up </a> 209 </li> 210 <li id="In-Practice/2D-Game/Rendering-Sprites"> 211 <a href="https://learnopengl.com/In-Practice/2D-Game/Rendering-Sprites">Rendering Sprites </a> 212 </li> 213 <li id="In-Practice/2D-Game/Levels"> 214 <a href="https://learnopengl.com/In-Practice/2D-Game/Levels">Levels </a> 215 </li> 216 <li id="In-Practice/2D-Game/Collisions"> 217 <span class="closed">Collisions </span> 218 <ol> 219 <li id="In-Practice/2D-Game/Collisions/Ball"> 220 <a href="https://learnopengl.com/In-Practice/2D-Game/Collisions/Ball">Ball </a> 221 </li> 222 <li id="In-Practice/2D-Game/Collisions/Collision-detection"> 223 <a href="https://learnopengl.com/In-Practice/2D-Game/Collisions/Collision-detection">Collision detection </a> 224 </li> 225 <li id="In-Practice/2D-Game/Collisions/Collision-resolution"> 226 <a href="https://learnopengl.com/In-Practice/2D-Game/Collisions/Collision-resolution">Collision resolution </a> 227 </li> 228 </ol> 229 </li> 230 <li id="In-Practice/2D-Game/Particles"> 231 <a href="https://learnopengl.com/In-Practice/2D-Game/Particles">Particles </a> 232 </li> 233 <li id="In-Practice/2D-Game/Postprocessing"> 234 <a href="https://learnopengl.com/In-Practice/2D-Game/Postprocessing">Postprocessing </a> 235 </li> 236 <li id="In-Practice/2D-Game/Powerups"> 237 <a href="https://learnopengl.com/In-Practice/2D-Game/Powerups">Powerups </a> 238 </li> 239 <li id="In-Practice/2D-Game/Audio"> 240 <a href="https://learnopengl.com/In-Practice/2D-Game/Audio">Audio </a> 241 </li> 242 <li id="In-Practice/2D-Game/Render-text"> 243 <a href="https://learnopengl.com/In-Practice/2D-Game/Render-text">Render text </a> 244 </li> 245 <li id="In-Practice/2D-Game/Final-thoughts"> 246 <a href="https://learnopengl.com/In-Practice/2D-Game/Final-thoughts">Final thoughts </a> 247 </li> 248 </ol> 249 </li> 250 </ol> 251 </li> 252 <li id="Guest-Articles"> 253 <span class="closed">Guest Articles </span> 254 <ol> 255 <li id="Guest-Articles/How-to-publish"> 256 <a href="https://learnopengl.com/Guest-Articles/How-to-publish">How to publish </a> 257 </li> 258 <li id="Guest-Articles/2020"> 259 <span class="closed">2020 </span> 260 <ol> 261 <li id="Guest-Articles/2020/OIT"> 262 <span class="closed">OIT </span> 263 <ol> 264 <li id="Guest-Articles/2020/OIT/Introduction"> 265 <a href="https://learnopengl.com/Guest-Articles/2020/OIT/Introduction">Introduction </a> 266 </li> 267 <li id="Guest-Articles/2020/OIT/Weighted-Blended"> 268 <a href="https://learnopengl.com/Guest-Articles/2020/OIT/Weighted-Blended">Weighted Blended </a> 269 </li> 270 </ol> 271 </li> 272 <li id="Guest-Articles/2020/Skeletal-Animation"> 273 <a href="https://learnopengl.com/Guest-Articles/2020/Skeletal-Animation">Skeletal Animation </a> 274 </li> 275 </ol> 276 </li> 277 <li id="Guest-Articles/2021"> 278 <span class="closed">2021 </span> 279 <ol> 280 <li id="Guest-Articles/2021/CSM"> 281 <a href="https://learnopengl.com/Guest-Articles/2021/CSM">CSM </a> 282 </li> 283 <li id="Guest-Articles/2021/Scene"> 284 <span class="closed">Scene </span> 285 <ol> 286 <li id="Guest-Articles/2021/Scene/Scene-Graph"> 287 <a href="https://learnopengl.com/Guest-Articles/2021/Scene/Scene-Graph">Scene Graph </a> 288 </li> 289 <li id="Guest-Articles/2021/Scene/Frustum-Culling"> 290 <a href="https://learnopengl.com/Guest-Articles/2021/Scene/Frustum-Culling">Frustum Culling </a> 291 </li> 292 </ol> 293 </li> 294 <li id="Guest-Articles/2021/Tessellation"> 295 <span class="closed">Tessellation </span> 296 <ol> 297 <li id="Guest-Articles/2021/Tessellation/Height-map"> 298 <a href="https://learnopengl.com/Guest-Articles/2021/Tessellation/Height-map">Height map </a> 299 </li> 300 </ol> 301 </li> 302 </ol> 303 </li> 304 </ol> 305 </li> 306 <li id="Code-repository"> 307 <a href="https://learnopengl.com/Code-repository">Code repository </a> 308 </li> 309 <li id="Translations"> 310 <a href="https://learnopengl.com/Translations">Translations </a> 311 </li> 312 <li id="About"> 313 <a href="https://learnopengl.com/About">About </a> 314 </li> 315 </ol> 316 </nav> 317 <main> 318 <div id="content"> 319 <h1 id="content-title">Introduction</h1> 320 <h1 id="content-title">はじめに</h1> 321 <h1 id="content-url" style='display:none;'>Introduction</h1> 322 <p> 323 Since you came here you probably want to learn the inner workings of computer graphics and do all the stuff the cool kids do by yourself. Doing things by yourself is extremely fun and resourceful and gives you a great understanding of graphics programming. However, there are a few items that need to be taken into consideration before starting your journey. 324 ここに来たあなたはコンピュータグラフィックスの内部に興味があり、イケてるエンジニアがやっているようなことを自身の手ででも行いたいと考えていることでしょう。グラフィックプログラミングを自身の手で行うことはとても楽しく、頭脳を刺激されるものであり、またグラフィックプログラミングに関する深い理解が得られます。しかし旅に出掛ける前に考慮すべきことがいくつかあります。 325 </p> 326 327 <h2>Prerequisites</h2> 328 <h2>前提知識</h2> 329 <p> 330 Since OpenGL is a graphics API and not a platform of its own, it requires a language to operate in and the language of choice is <code>C++</code>. Therefore a decent knowledge of the <code>C++</code> programming language is required for these chapters. However, I will try to explain most of the concepts used, including advanced <code>C++</code> topics where required so it is not required to be an expert in <code>C++</code>, but you should be able to write more than just a <code>'Hello World'</code> program. If you don't have much experience with <code>C++</code> I can recommend the free tutorials at <a href="http://www.learncpp.com" target="_blank">www.learncpp.com</a>. 331 今日のOpenGLはグラフィックスAPIであり、プラットフォームではありません。そのためOpenGLを操作するためのプログラミング言語が必要です。本書ではそのような言語として<code>C++</code>を用います。そのため本書を読むにあたって<code>C++</code>の十分な知識が必要です。ときには<code>C++</code>の発展的な手法を用います。しかし可能な限り基本となる考え方は説明しますので、<code>C++</code>のエキスパートである必要はありません。ただし<code>'Hello World'</code>を出力するプログラムを書けるだけでは不十分です。<code>C++</code>の経験が不十分であれば、<a href="http://www.learncpp.com" target="_blank">www.learncpp.com</a>で利用できる無料のチュートリアルがおすすめです。 332 </p> 333 334 <p> 335 Also, we will be using some math (linear algebra, geometry, and trigonometry) along the way and I will try to explain all the required concepts of the math required. However, I'm not a mathematician by heart so even though my explanations may be easy to understand, they will most likely be incomplete. So where necessary I will provide pointers to good resources that explain the material in a more complete fashion. Don't be scared about the mathematical knowledge required before starting your journey into OpenGL; almost all the concepts can be understood with a basic mathematical background and I will try to keep the mathematics to a minimum where possible. Most of the functionality doesn't even require you to understand all the math as long as you know how to use it. 336 加えて数学も利用します。線形代数、幾何学、三角関数といったものです。これらの数学についても、必要な概念はできるだけ説明するようにします。ただし私は数学者ではありません。私の説明が理解しやすかったとしても、その説明は数学的に完全なものではないかもしれません。そのため必要に応じてより完全な説明がされている情報源を提供するようにします。OpenGLの旅に出掛けていない段階で数学に恐れをなさないでください。ほとんどの概念は基本的な数学の知識があれば理解できますし、数学の利用自体も最小限にとどめるように努力します。ほとんどの場合、使い方だけ知っていれば、数学の中身を理解する必要さえありません。 337 </p> 338 339 <h2>Structure</h2> 340 <h2>本書の構成</h2> 341 <p> 342 LearnOpenGL is broken down into a number of general sections. Each section contains several chapters that each explain different concepts in large detail. Each of the chapters can be found at the menu to your left. The concepts are taught in a linear fashion (so it is advised to start from the top to the bottom, unless otherwise instructed) where each chapter explains the background theory and the practical aspects. 343 本書はいくつかの節におおまかに分けられます。各節は個々の概念を詳細に解説した章により構成されます。各章は左のメニューから見つけることができます。個々の概念は順番に解説していますので、特に断りがなければ前から順番に読むことを推奨します。各章では背景となる理屈と実際の利用法を説明します。 344 </p> 345 346 <p> 347 To make the concepts easier to follow, and give them some added structure, the book contains <em>boxes</em>, <em>code blocks</em>, <em>color hints</em> and <em>function references</em>. 348 本書を視覚的に見やすくし、話の流れを追跡しやすくするため、いくつかの<em>ボックス</em>、<em>コードブロック</em>、<em>色付き文字</em>そして<em>関数の照会</em>を用います。 349 </p> 350 351 <h3>Boxes</h3> 352 <h3>ボックス</h3> 353 <note><strong>Green</strong> boxes encompasses some notes or useful features/hints about OpenGL or the subject at hand.</note> 354 <note><strong>緑</strong>のボックスはOpenGLについてあるいはその場所で議論している話題についてのメモや有用な特性、ヒントを含みます。</note> 355 <warning><strong>Red</strong> boxes will contain warnings or other features you have to be extra careful with.</warning> 356 <warning><strong>赤</strong>のボックスは警告や、十分な注意をはらうべき特性を含みます。</warning> 357 358 <h3>Code</h3> 359 <h3>コード</h3> 360 <p> 361 You will find plenty of small pieces of code in the website that are located in dark-gray boxes with syntax-highlighted code as you can see below: 362 本書にはたくさんのコードがでてきますが、それらは以下のような深い灰色のボックスに、シンタックスハイライトがつけられて記述されています: 363 </p> 364 365 <pre><code> 366 // This box contains code 367 </code></pre> 368 <pre><code> 369 // このボックスはコードを含みます。 370 </code></pre> 371 372 <p> 373 Since these provide only snippets of code, wherever necessary I will provide a link to the entire source code required for a given subject. 374 このようなコードは断片であるため、必要に応じてコード全体が記述されているリンクを貼っておきます。 375 </p> 376 377 <h3>Color hints</h3> 378 <h3>色付き文字</h3> 379 <p> 380 Some words are displayed with a different color to make it extra clear these words portray a special meaning: 381 一部の文字には色が付けられ、特別な意味があることを見やすくしています: 382 </p> 383 384 <ul> 385 <li><def>Definition</def>: green words specify a definition i.e. an important aspect/name of something you're likely to hear more often.</li> 386 <li><def>定義</def>: 緑の文字は定義をあらわします。これらは以降の文章で頻繁に見られる概念や名前です。 387 <li><fun>Program structure</fun>: red words specify function names or class names.</li> 388 <li><fun>プログラムの構造</fun>: 赤い文字は関数やクラスの名前をあらわします。 389 <li><var>Variables</var>: blue words specify variables including all OpenGL constants.</li> 390 <li><var>変数</var>: 青い文字はOpenGLのすべての定数を含む変数をあらわします。 391 </ul> 392 393 <h3>OpenGL Function references</h3> 394 <h3>OpenGL関数の照会</h3> 395 <p> 396 A particularly well appreciated feature of LearnOpenGL is the ability to review most of OpenGL's functions wherever they show up in the content. Whenever a function is found in the content that is documented at the website, the function will show up with a slightly noticeable underline. You can hover the mouse over the function and after a small interval, a pop-up window will show relevant information about this function including a nice overview of what the function actually does. Hover your mouse over <fun><function id='60'>glEnable</function></fun> to see it in action. 397 この本がひろく受け容れられている特徴として、文中にあらわれたOpenGLの関数をいつでも照会できることがあげられます。文中の関数にはよく見ると下線が引かれています。マウスのカーソルを関数の上にあわせてしばらくすると、ポップアップがでて関数の情報が表示されます。こちらの関数<fun><function id='60'>glEnable</function></fun>で試してみてください。 398 </p> 399 400 <p> 401 Now that you got a bit of a feel of the structure of the site, hop over to the Getting Started section to start your journey in OpenGL! 402 以上で本書の構成はおおまかにつかめたかと思います。本編に進み、OpenGLの旅へ出掛けましょう。 403 </p> 404 405 </div> 406 </body> 407 </html> 408 </main> 409 </body> 410 </html>