void Bound(oglplus::Framebuffer::Target target, F f) {
fbo.Bind(target);
onBind(target);
f();
onUnbind(target);
oglplus::DefaultFramebuffer().Bind(target);
}
Example(std::size_t w, std::size_t h)
: width(w)
, height(h)
, font_file("fonts", "FreeSans", ".ttf")
, font(font_file)
{
using namespace oglplus;
tex.Bind(TextureTarget::Rectangle);
fbo.Bind(FramebufferTarget::Read);
PrepareText();
}