{"id":2116,"date":"2013-04-01T18:38:27","date_gmt":"2013-04-01T09:38:27","guid":{"rendered":"http:\/\/peta.okechan.net\/blog\/?p=2116"},"modified":"2013-04-01T19:18:53","modified_gmt":"2013-04-01T10:18:53","slug":"%e3%83%95%e3%82%a9%e3%83%88%e3%83%b3%e3%83%99%e3%82%a4%e3%82%ab%e3%83%bc%ef%bc%88%e4%bb%ae%ef%bc%89%e9%80%b2%e6%8d%97%e3%81%9d%e3%81%ae1","status":"publish","type":"post","link":"https:\/\/peta.okechan.net\/blog\/archives\/2116","title":{"rendered":"\u30d5\u30a9\u30c8\u30f3\u30d9\u30a4\u30ab\u30fc\uff08\u4eee\uff09\u9032\u6357\u305d\u306e1"},"content":{"rendered":"<p>\u8a00\u8a9e\u306fC++\u3001\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u6f14\u7b97\u306b\u306f <a href=\"http:\/\/glm.g-truc.net\/index.html\" target=\"_blank\">OpenGL Mathematics (GLM)<\/a> \u3068\u3044\u3046 mathematics library \u3092\u4f7f\u3063\u3066\u3068\u308a\u3042\u3048\u305a\u5b9f\u88c5\u3092\u306f\u3058\u3081\u305f\u3002<br \/>\nmathematics library \u3063\u3066\u8a33\u3059\u3068\u6570\u5b66\u30e9\u30a4\u30d6\u30e9\u30ea\uff1f \u6570\u5024\u8a08\u7b97\u30e9\u30a4\u30d6\u30e9\u30ea\u3060\u3068\u306a\u3093\u304b\u3061\u3087\u3063\u3068\u9055\u3046\u7a2e\u985e\u306b\u306a\u308b\u3088\u306d\u3002<\/p>\n<p>\u3053\u306eGLM\u3001GLSL\u306b\u8fd1\u3044\u66f8\u304d\u65b9\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u308b\u306e\u3067\u3001OpenGL\u306e\u30b7\u30a7\u30fc\u30c0\u30fc\u3092\u66f8\u3044\u305f\u4e8b\u304c\u3042\u3063\u3066\u300c\u30b7\u30a7\u30fc\u30c0\u30fc\u3063\u3066\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u8a18\u8ff0\u304c\u697d\u3067\u3044\u3044\u308f\u3041\u300d\u3063\u3066\u601d\u3063\u305f\u3053\u3068\u306e\u3042\u308b\u65b9\u306b\u306f\u3081\u3063\u3061\u3083\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/p>\n<p>\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3069\u3053\u304b\u306e\u500b\u4eba\u304c\u9593\u306b\u5408\u308f\u305b\u3067\u4f5c\u3063\u305f\u3088\u3046\u306a\u3082\u306e\u307e\u3067\u542b\u3081\u308b\u3068\u305d\u308c\u3053\u305d\u6570\u3048\u304d\u308c\u306a\u3044\u307b\u3069\u3042\u308b\u3051\u3069\u3001\u3053\u306eGLM\u306f\u4eca\u307e\u3067\u4f7f\u3063\u305f\u4e2d\u3067\u306f3D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7528\u3068\u3057\u3066\u3044\u3061\u3070\u3093\u4f7f\u3044\u3084\u3059\u3044\u3068\u3044\u3046\u304b\u3001\u4f7f\u3063\u3066\u3066\u300c\u3061\u3087\u3063\u3068\u30ad\u30d3\u3057\u3044\u306a\u3041\u300d\u601d\u3046\u3088\u3046\u306a\u6b20\u70b9\u304c\u4eca\u306e\u3068\u3053\u308d\u307e\u3060\u306a\u3044\u3002<\/p>\n<p>\u30d9\u30af\u30c8\u30eb\u3001\u884c\u5217\u6f14\u7b97\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3057\u3066\u7acb\u6d3e\u306b\u3072\u3068\u308a\u7acb\u3061\u3057\u3066\u308b\u3088\u3046\u306a\u6709\u540d\u6240\u3060\u3068\u6c4e\u7528\u7684\u904e\u304e\u3066\u9006\u306b\u4f7f\u3044\u3065\u3089\u304b\u3063\u305f\u308a\uff08\u666e\u901a\u306e3D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u30d9\u30af\u30c8\u30eb\u306e\u6b21\u5143\u6570\u3092\u7121\u5236\u9650\u306b\u3067\u304d\u3066\u3082\u5b09\u3057\u304f\u306a\u3044\u3057\uff09\u30013D\u95a2\u4fc2\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u7269\u7406\u6f14\u7b97\u30a8\u30f3\u30b8\u30f3\u306b\u4ed8\u5c5e\u3057\u3066\u308b\u3088\u3046\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u9006\u306b\u7279\u5316\u3057\u3066\u3066\u5fae\u5999\u306a\u5236\u9650\u304c\u3042\u3063\u305f\u308a\u3059\u308b\u3093\u3060\u3051\u3069\u3001\u3053\u306eGLM\u306f\u4e00\u822c\u7684\u306a\uff13D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5411\u3051\u3068\u3057\u3066\u306f\u304b\u306a\u308a\u30d0\u30e9\u30f3\u30b9\u304c\u3044\u3044\u3002<br \/>\nCUDA\u3084SSE\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u308b\u3057\u3001swizzling\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u308b\u3002<br \/>\nswizzling\u3063\u3066\u306e\u306f\u3001\u4f8b\u3048\u3070\u8272\uff08R,G,B,A\uff09\u3092\u8868\u3059 vec4 color \u3068\u3044\u3046\u5909\u6570\u304c\u3042\u3063\u305f\u5834\u5408\u3001 gl_FragColor = color.rbga; \u306a\u3093\u3066\u66f8\u304d\u65b9\u3067\u7dd1\u6210\u5206\u3068\u9752\u6210\u5206\u3092\u7c21\u5358\u306b\u5165\u308c\u66ff\u3048\u305f\u308a\u3059\u308b\u3053\u3068\u3002<br \/>\n\u5165\u308c\u66ff\u3048\u3060\u3051\u3058\u3083\u306a\u304f\u3066\u540c\u3058\u6210\u5206\u3092\u7e70\u308a\u8fd4\u3057\u305f\u308a\u3082\u3067\u304d\u308b\u3002<br \/>\n\uff08GLSL\u3067\u306frgba\u3082xyzw\u3082\u8868\u8a18\u306e\u3057\u304b\u305f\u304c\u9055\u3046\u3060\u3051\u3067\u540c\u3058\u3082\u306e\u3092\u6307\u3057\u3066\u308b\u304b\u3089\u5f53\u7136xyzw\u3082swizzling\u3067\u304d\u308b\u3002\uff09<br \/>\n\u3055\u3089\u306bMIT\u30e9\u30a4\u30bb\u30f3\u30b9\u3060\u3057\u30de\u30b8\u30aa\u30b9\u30b9\u30e1\u3002<\/p>\n<p>\u3055\u3066GLM\u306e\u5ba3\u4f1d\u306f\u3053\u308c\u304f\u3089\u3044\u306b\u3057\u3066\u9032\u6357\u3092\u3002<\/p>\n<p>\u30d5\u30a9\u30c8\u30f3\u3068\u30dd\u30ea\u30b4\u30f3\u306e\u5f53\u305f\u308a\u5224\u5b9a\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u306b5\u6b21\u5143\u7a7a\u9593\u5206\u5272\u306b\u3088\u308bRay Classification\u3092\u5b9f\u88c5\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u305f\u3051\u3069\u3001\u5b9f\u306f\u305d\u3093\u306a\u306b\u52b9\u7387\u3088\u304f\u306a\u3044\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u308a\uff08\u660e\u78ba\u306a\u6839\u62e0\u306a\u3057\uff09\u3001\u5b9f\u884c\u7d50\u679c\u3092\u753b\u3068\u3057\u3066\u898b\u308c\u306a\u3044\u6bb5\u968e\u304b\u3089\u96e3\u3057\u3044\u3053\u3068\u3059\u308b\u3068\u8a70\u307f\u305d\u3046\u306a\u6c17\u304c\u3057\u305f\u306e\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30e1\u30c7\u30a3\u30a2\u30f3\u5206\u5272\u306aBVH\u3092\u5b9f\u88c5\u3057\u305f\u3002<br \/>\n1\u6b21\u5143\u914d\u5217\u306b\u30ce\u30fc\u30c9\u306e\u30c7\u30fc\u30bf\u3092\u7f6e\u3044\u305f\u308a\u3068\u304b\u3001\u305d\u3046\u3044\u3046\u6700\u9069\u5316\u306f\u306a\u306b\u3082\u3057\u3066\u306a\u3044\u30aa\u30fc\u30bd\u30c9\u30c3\u30af\u30b9\u306a\u5b9f\u88c5\u3002<br \/>\n\u914d\u5217\u5316\u3057\u305f\u308a\u3001\u30b3\u30b9\u30c8\u95a2\u6570\u3092\u4f7f\u3063\u3066\u5206\u5272\u3057\u305f\u308a\u3068\u304b\u306f\u5f8c\u3005\u3084\u308c\u3070\u3044\u3044\u304b\u306a\u3068\u3044\u3046\u8003\u3048\u3002<\/p>\n<p>\u5b9f\u88c5\u3057\u305fBVH\u306e\u52d5\u4f5c\u78ba\u8a8d\u306e\u305f\u3081\u306b\u3001\u8996\u70b9\u304b\u3089\u753b\u9762\u306e\u771f\u3093\u4e2d\u306b\u5411\u304b\u3063\u3066\u30ec\u30a4\u3092\u98db\u3070\u3057\u3066\u3076\u3064\u304b\u3063\u305f\u30dd\u30ea\u30b4\u30f3\u3092\u7dd1\u8272\u306b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\uff08OpenGL\u306b\u3088\u308b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\uff09\u3092\u66f8\u3044\u305f\u3002<br \/>\n\u30de\u30a6\u30b9\u3084WASD\u3067\u30b0\u30ea\u30b0\u30ea\u52d5\u304b\u305b\u308b\u3093\u3060\u3051\u3069\u3001\u3084\u306f\u308aQuick Time\u306e\u753b\u9762\u53ce\u9332\u304c\u6fc0\u91cd\u306a\u306e\u3067\u9759\u6b62\u753b\u3060\u3051\u516c\u958b\u3002<br \/>\n\u3053\u3046\u3044\u3046\u5834\u5408\u3001\u6642\u5206\u5272\u30921\/30s\u3068\u304b\u306e\u56fa\u5b9a\u306b\u3057\u6bce\u30d5\u30ec\u30fc\u30e0\u9759\u6b62\u753b\u3092\u51fa\u529b\u3057\u3066\u3001\u5f8c\u304b\u3089\u4e00\u9023\u306e\u753b\u50cf\u3092\u52d5\u753b\u5316\u3059\u308b\u306e\u304c\u738b\u9053\u3060\u3068\u601d\u3046\u3051\u3069\u3001\u4e0b\u624b\u306b\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u4f5c\u308a\u306b\u3057\u3066\u3057\u307e\u3063\u305f\u305b\u3044\u3067\u305d\u3046\u3044\u3046\u624b\u6cd5\u3068\u3082\u30de\u30c3\u30c1\u3057\u306a\u304f\u306a\u3063\u3066\u308b\u72b6\u614b\u3002<br \/>\n\u305d\u306e\u3046\u3061\u64cd\u4f5c\u3092\u8a18\u9332\u3057\u3066\u518d\u751f\u51fa\u6765\u308b\u6a5f\u80fd\u3092\u4ed8\u3051\u3066\u52d5\u753b\u3092\u4f5c\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3064\u3082\u308a\u3002<br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-150x150.jpeg\" alt=\"capture_0\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2117\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-150x150.jpeg\" alt=\"capture_1\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2118\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-150x150.jpeg\" alt=\"capture_2\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2119\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-150x150.jpeg\" alt=\"capture_3\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2120\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-150x150.jpeg\" alt=\"capture_4\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2121\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n\u30ed\u30a6\u30bd\u30af\u306b\u30dd\u30ea\u30b4\u30f3\u4f7f\u3044\u904e\u304ew<\/p>\n<p>AABB\u3068\u30ec\u30a4\u306e\u5f53\u305f\u308a\u5224\u5b9a\u306f <a href=\"http:\/\/gamedev.stackexchange.com\/a\/18459\" target=\"_blank\">http:\/\/gamedev.stackexchange.com\/a\/18459<\/a> \u3092\u53c2\u8003\u306b\u3001\u30dd\u30ea\u30b4\u30f3\u3068\u30ec\u30a4\u306e\u5f53\u305f\u308a\u5224\u5b9a\u306f Tomas Moller \u306e\u65b9\u6cd5\u3092\u53c2\u8003\u306b\u3057\u305f\u3002<\/p>\n<p>\u3057\u304b\u3057BVH\u3092\u5b9f\u88c5\u3057\u3066\u601d\u3063\u305f\u3093\u3060\u3051\u3069\u3001BVH\u3063\u3066\u4e00\u69d8\u306a\u30b0\u30ea\u30c3\u30c9\u306b\u3088\u308b\u7a7a\u9593\u5206\u5272\u6cd5\u3088\u308a\u697d\u3060\u3068\u601d\u3063\u305f\u3002<br \/>\n\u5b9f\u88c5\u3057\u305f\u3053\u3068\u304c\u3042\u308b\u30ef\u30b1\u3058\u3083\u306a\u3044\u3051\u3069\u3001\u78ba\u304b\u306b\u30d3\u30eb\u30c9\u51e6\u7406\u306e\u5b9f\u88c5\u306f\u30b0\u30ea\u30c3\u30c9\u306e\u65b9\u304c\u697d\u3060\u3068\u601d\u3046\u3051\u3069\u3001\u30c8\u30e9\u30d0\u30fc\u30b9\u51e6\u7406\u306e\u5b9f\u88c5\u306f\u5730\u5473\u306b\u9762\u5012\u306a\u3093\u3058\u3083\u306a\u3044\u304b\u306a\u3002<br \/>\n\u307e\u3041\u30d6\u30ec\u30bc\u30f3\u30cf\u30e0\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u30923\u6b21\u5143\u7a7a\u9593\u3067\u3084\u308b\u3088\u3046\u306a\u30a4\u30e1\u30fc\u30b8\u3060\u3068\u601d\u3046\u3051\u3069\u3001\u30dd\u30ea\u30b4\u30f3\u3068\u30ec\u30a4\u306e\u4ea4\u70b9\u3092\u5358\u306b\u6c42\u3081\u308b\u3060\u3051\u3058\u3083\u306a\u304f\u3066\u4ea4\u70b9\u304c\u30b0\u30ea\u30c3\u30c9\u306e\u4e2d\u306b\u3042\u308b\u304b\u3069\u3046\u304b\u307e\u3067\u30c1\u30a7\u30c3\u30af\u3057\u306a\u3044\u3068\u6b63\u78ba\u3058\u3083\u306a\u3044\u3089\u3057\u3044\u304b\u3089\u3001\u30b3\u30fc\u30c9\u306f\u305d\u308c\u306a\u308a\u306e\u9577\u3055\u306b\u306a\u308b\u3093\u3058\u3083\u306a\u3044\u304b\u306a\u3002<br \/>\n\u4e00\u65b9BVH\u306f\u518d\u5e30\u7684\u306b\u8fbf\u3063\u3066\u4ea4\u5dee\u5224\u5b9a\u3057\u3066\u30ec\u30a4\u306e\u8996\u70b9\u304b\u3089\u4e00\u756a\u8fd1\u3044\u4ea4\u70b9\u3092\u3082\u3064\u30dd\u30ea\u30b4\u30f3\u3092\u898b\u3064\u3051\u308c\u3070\u3044\u3044\u3060\u3051\u3002<br \/>\n\u5b9f\u969b\u66f8\u3044\u305f\u30c8\u30e9\u30d0\u30fc\u30b9\u672c\u4f53\u306e\u30b3\u30fc\u30c9\u306f10\u884c\u3050\u3089\u3044\u3060\u3057\u3002<\/p>\n<p>BVH\u306f\u4e00\u756a\u7c21\u5358\u306a\u3082\u306e\u3060\u3068\u5b9f\u88c5\u96e3\u5ea6\u304c\u4f4e\u3044\u3057\u3001\u305d\u3053\u304b\u3089\u6bb5\u968e\u7684\u306b\u9ad8\u5ea6\u5316\u3057\u3066\u3044\u304f\u3053\u3068\u3082\u53ef\u80fd\u3060\u304b\u3089\u3001\u3068\u308a\u3042\u3048\u305a\u306e\u9078\u629e\u3068\u3057\u3066\u306f\u30aa\u30b9\u30b9\u30e1\u3060\u3068\u601d\u3046\u3002<br \/>\nBVH\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3063\u3066\u3044\u3046\u6709\u540d\u306a\u30e2\u30fc\u30b7\u30e7\u30f3\u30ad\u30e3\u30d7\u30c1\u30e3\u30c7\u30fc\u30bf\u30d5\u30a1\u30a4\u30eb\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u3042\u3063\u3066\u3001\u3055\u3089\u306b\u3069\u3061\u3089\u30823D\u95a2\u9023\u306a\u3082\u306e\u3060\u304b\u3089Web\u691c\u7d22\u304c\u3057\u3065\u3089\u3044\u3068\u3044\u3046\u554f\u984c\u306f\u3042\u308b\u3051\u3069\u306dw<\/p>\n<p>\u3053\u306e\u5f8c\u306e\u4e88\u5b9a\u3068\u3057\u3066\u306f\u3001\u3068\u308a\u3042\u3048\u305a\u30d5\u30a9\u30c8\u30f3\u3092\u3070\u3089\u8494\u3044\u3066\u307f\u3066\u7740\u5f3e\u70b9\u3092\u53ef\u8996\u5316\u3057\u3066\u307f\u308b\u611f\u3058\u304b\u306a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8a00\u8a9e\u306fC++\u3001\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u6f14\u7b97\u306b\u306f <a href=\"http:\/\/glm.g-truc.net\/index.html\" target=\"_blank\">OpenGL Mathematics (GLM)<\/a> \u3068\u3044\u3046 mathematics library \u3092\u4f7f\u3063\u3066\u3068\u308a\u3042\u3048\u305a\u5b9f\u88c5\u3092\u306f\u3058\u3081\u305f\u3002<br \/>\nmathematics library \u3063\u3066\u8a33\u3059\u3068\u6570\u5b66\u30e9\u30a4\u30d6\u30e9\u30ea\uff1f \u6570\u5024\u8a08\u7b97\u30e9\u30a4\u30d6\u30e9\u30ea\u3060\u3068\u306a\u3093\u304b\u3061\u3087\u3063\u3068\u9055\u3046\u7a2e\u985e\u306b\u306a\u308b\u3088\u306d\u3002<\/p>\n<p>\u3053\u306eGLM\u3001GLSL\u306b\u8fd1\u3044\u66f8\u304d\u65b9\u3067\u4f7f\u3048\u308b\u3088\u3046\u306b\u8a2d\u8a08\u3055\u308c\u3066\u308b\u306e\u3067\u3001OpenGL\u306e\u30b7\u30a7\u30fc\u30c0\u30fc\u3092\u66f8\u3044\u305f\u4e8b\u304c\u3042\u3063\u3066\u300c\u30b7\u30a7\u30fc\u30c0\u30fc\u3063\u3066\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u8a18\u8ff0\u304c\u697d\u3067\u3044\u3044\u308f\u3041\u300d\u3063\u3066\u601d\u3063\u305f\u3053\u3068\u306e\u3042\u308b\u65b9\u306b\u306f\u3081\u3063\u3061\u3083\u30aa\u30b9\u30b9\u30e1\u3067\u3059\u3002<\/p>\n<p>\u30d9\u30af\u30c8\u30eb\u3084\u884c\u5217\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3069\u3053\u304b\u306e\u500b\u4eba\u304c\u9593\u306b\u5408\u308f\u305b\u3067\u4f5c\u3063\u305f\u3088\u3046\u306a\u3082\u306e\u307e\u3067\u542b\u3081\u308b\u3068\u305d\u308c\u3053\u305d\u6570\u3048\u304d\u308c\u306a\u3044\u307b\u3069\u3042\u308b\u3051\u3069\u3001\u3053\u306eGLM\u306f\u4eca\u307e\u3067\u4f7f\u3063\u305f\u4e2d\u3067\u306f3D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7528\u3068\u3057\u3066\u3044\u3061\u3070\u3093\u4f7f\u3044\u3084\u3059\u3044\u3068\u3044\u3046\u304b\u3001\u4f7f\u3063\u3066\u3066\u300c\u3061\u3087\u3063\u3068\u30ad\u30d3\u3057\u3044\u306a\u3041\u300d\u601d\u3046\u3088\u3046\u306a\u6b20\u70b9\u304c\u4eca\u306e\u3068\u3053\u308d\u307e\u3060\u306a\u3044\u3002<\/p>\n<p>\u30d9\u30af\u30c8\u30eb\u3001\u884c\u5217\u6f14\u7b97\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u3057\u3066\u7acb\u6d3e\u306b\u3072\u3068\u308a\u7acb\u3061\u3057\u3066\u308b\u3088\u3046\u306a\u6709\u540d\u6240\u3060\u3068\u6c4e\u7528\u7684\u904e\u304e\u3066\u9006\u306b\u4f7f\u3044\u3065\u3089\u304b\u3063\u305f\u308a\uff08\u666e\u901a\u306e3D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3067\u30d9\u30af\u30c8\u30eb\u306e\u6b21\u5143\u6570\u3092\u7121\u5236\u9650\u306b\u3067\u304d\u3066\u3082\u5b09\u3057\u304f\u306a\u3044\u3057\uff09\u30013D\u95a2\u4fc2\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u3084\u7269\u7406\u6f14\u7b97\u30a8\u30f3\u30b8\u30f3\u306b\u4ed8\u5c5e\u3057\u3066\u308b\u3088\u3046\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u9006\u306b\u7279\u5316\u3057\u3066\u3066\u5fae\u5999\u306a\u5236\u9650\u304c\u3042\u3063\u305f\u308a\u3059\u308b\u3093\u3060\u3051\u3069\u3001\u3053\u306eGLM\u306f\u4e00\u822c\u7684\u306a\uff13D\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5411\u3051\u3068\u3057\u3066\u306f\u304b\u306a\u308a\u30d0\u30e9\u30f3\u30b9\u304c\u3044\u3044\u3002<br \/>\nCUDA\u3084SSE\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u308b\u3057\u3001swizzling\u306b\u3082\u5bfe\u5fdc\u3057\u3066\u308b\u3002<br \/>\nswizzling\u3063\u3066\u306e\u306f\u3001\u4f8b\u3048\u3070\u8272\uff08R,G,B,A\uff09\u3092\u8868\u3059 vec4 color \u3068\u3044\u3046\u5909\u6570\u304c\u3042\u3063\u305f\u5834\u5408\u3001 gl_FragColor = color.rbga; \u306a\u3093\u3066\u66f8\u304d\u65b9\u3067\u7dd1\u6210\u5206\u3068\u9752\u6210\u5206\u3092\u7c21\u5358\u306b\u5165\u308c\u66ff\u3048\u305f\u308a\u3059\u308b\u3053\u3068\u3002<br \/>\n\u5165\u308c\u66ff\u3048\u3060\u3051\u3058\u3083\u306a\u304f\u3066\u540c\u3058\u6210\u5206\u3092\u7e70\u308a\u8fd4\u3057\u305f\u308a\u3082\u3067\u304d\u308b\u3002<br \/>\n\uff08GLSL\u3067\u306frgba\u3082xyzw\u3082\u8868\u8a18\u306e\u3057\u304b\u305f\u304c\u9055\u3046\u3060\u3051\u3067\u540c\u3058\u3082\u306e\u3092\u6307\u3057\u3066\u308b\u304b\u3089\u5f53\u7136xyzw\u3082swizzling\u3067\u304d\u308b\u3002\uff09<br \/>\n\u3055\u3089\u306bMIT\u30e9\u30a4\u30bb\u30f3\u30b9\u3060\u3057\u30de\u30b8\u30aa\u30b9\u30b9\u30e1\u3002<\/p>\n<p>\u3055\u3066GLM\u306e\u5ba3\u4f1d\u306f\u3053\u308c\u304f\u3089\u3044\u306b\u3057\u3066\u9032\u6357\u3092\u3002<\/p>\n<p>\u30d5\u30a9\u30c8\u30f3\u3068\u30dd\u30ea\u30b4\u30f3\u306e\u5f53\u305f\u308a\u5224\u5b9a\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u306b5\u6b21\u5143\u7a7a\u9593\u5206\u5272\u306b\u3088\u308bRay Classification\u3092\u5b9f\u88c5\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u305f\u3051\u3069\u3001\u5b9f\u306f\u305d\u3093\u306a\u306b\u52b9\u7387\u3088\u304f\u306a\u3044\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u308a\uff08\u660e\u78ba\u306a\u6839\u62e0\u306a\u3057\uff09\u3001\u5b9f\u884c\u7d50\u679c\u3092\u753b\u3068\u3057\u3066\u898b\u308c\u306a\u3044\u6bb5\u968e\u304b\u3089\u96e3\u3057\u3044\u3053\u3068\u3059\u308b\u3068\u8a70\u307f\u305d\u3046\u306a\u6c17\u304c\u3057\u305f\u306e\u3067\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30e1\u30c7\u30a3\u30a2\u30f3\u5206\u5272\u306aBVH\u3092\u5b9f\u88c5\u3057\u305f\u3002<br \/>\n1\u6b21\u5143\u914d\u5217\u306b\u30ce\u30fc\u30c9\u306e\u30c7\u30fc\u30bf\u3092\u7f6e\u3044\u305f\u308a\u3068\u304b\u3001\u305d\u3046\u3044\u3046\u6700\u9069\u5316\u306f\u306a\u306b\u3082\u3057\u3066\u306a\u3044\u30aa\u30fc\u30bd\u30c9\u30c3\u30af\u30b9\u306a\u5b9f\u88c5\u3002<br \/>\n\u914d\u5217\u5316\u3057\u305f\u308a\u3001\u30b3\u30b9\u30c8\u95a2\u6570\u3092\u4f7f\u3063\u3066\u5206\u5272\u3057\u305f\u308a\u3068\u304b\u306f\u5f8c\u3005\u3084\u308c\u3070\u3044\u3044\u304b\u306a\u3068\u3044\u3046\u8003\u3048\u3002<\/p>\n<p>\u5b9f\u88c5\u3057\u305fBVH\u306e\u52d5\u4f5c\u78ba\u8a8d\u306e\u305f\u3081\u306b\u3001\u8996\u70b9\u304b\u3089\u753b\u9762\u306e\u771f\u3093\u4e2d\u306b\u5411\u304b\u3063\u3066\u30ec\u30a4\u3092\u98db\u3070\u3057\u3066\u3076\u3064\u304b\u3063\u305f\u30dd\u30ea\u30b4\u30f3\u3092\u7dd1\u8272\u306b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\uff08OpenGL\u306b\u3088\u308b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\uff09\u3092\u66f8\u3044\u305f\u3002<br \/>\n\u30de\u30a6\u30b9\u3084WASD\u3067\u30b0\u30ea\u30b0\u30ea\u52d5\u304b\u305b\u308b\u3093\u3060\u3051\u3069\u3001\u3084\u306f\u308aQuick Time\u306e\u753b\u9762\u53ce\u9332\u304c\u6fc0\u91cd\u306a\u306e\u3067\u9759\u6b62\u753b\u3060\u3051\u516c\u958b\u3002<br \/>\n\u3053\u3046\u3044\u3046\u5834\u5408\u3001\u6642\u5206\u5272\u30921\/30s\u3068\u304b\u306e\u56fa\u5b9a\u306b\u3057\u6bce\u30d5\u30ec\u30fc\u30e0\u9759\u6b62\u753b\u3092\u51fa\u529b\u3057\u3066\u3001\u5f8c\u304b\u3089\u4e00\u9023\u306e\u753b\u50cf\u3092\u52d5\u753b\u5316\u3059\u308b\u306e\u304c\u738b\u9053\u3060\u3068\u601d\u3046\u3051\u3069\u3001\u4e0b\u624b\u306b\u30a4\u30f3\u30bf\u30e9\u30af\u30c6\u30a3\u30d6\u306a\u4f5c\u308a\u306b\u3057\u3066\u3057\u307e\u3063\u305f\u305b\u3044\u3067\u305d\u3046\u3044\u3046\u624b\u6cd5\u3068\u3082\u30de\u30c3\u30c1\u3057\u306a\u304f\u306a\u3063\u3066\u308b\u72b6\u614b\u3002<br \/>\n\u305d\u306e\u3046\u3061\u64cd\u4f5c\u3092\u8a18\u9332\u3057\u3066\u518d\u751f\u51fa\u6765\u308b\u6a5f\u80fd\u3092\u4ed8\u3051\u3066\u52d5\u753b\u3092\u4f5c\u308c\u308b\u3088\u3046\u306b\u3059\u308b\u3064\u3082\u308a\u3002<br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-150x150.jpeg\" alt=\"capture_0\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2117\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_0-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-150x150.jpeg\" alt=\"capture_1\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2118\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_1-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-150x150.jpeg\" alt=\"capture_2\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2119\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_2-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-150x150.jpeg\" alt=\"capture_3\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2120\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_3-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br \/>\n<a href=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4.jpeg\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-150x150.jpeg\" alt=\"capture_4\" width=\"150\" height=\"150\" class=\"aligncenter size-thumbnail wp-image-2121\" srcset=\"https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-150x150.jpeg 150w, https:\/\/peta.okechan.net\/blog\/wp-content\/uploads\/2013\/04\/capture_4-120x120.jpeg 120w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><br 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