2 updated link to gluPerspective docs
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The method in question (glm::perspective) and its ilk are essentially wrappers or re-implementations of gluPerspectivegluPerspective. As you can see from the documentation of that function, the near/far values are distances from the view plane, and are always positive.

The method in question (glm::perspective) and its ilk are essentially wrappers or re-implementations of gluPerspective. As you can see from the documentation of that function, the near/far values are distances from the view plane, and are always positive.

The method in question (glm::perspective) and its ilk are essentially wrappers or re-implementations of gluPerspective. As you can see from the documentation of that function, the near/far values are distances from the view plane, and are always positive.

1
source | link

The method in question (glm::perspective) and its ilk are essentially wrappers or re-implementations of gluPerspective. As you can see from the documentation of that function, the near/far values are distances from the view plane, and are always positive.