Постоянная DYNAMIC_DRAW
Реализация
static const int DYNAMIC_DRAW = 0x88E8;
© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-web_gl/WebGL/DYNAMIC_DRAW-constant.html
