WIP: Let clients add GLSL shaders locally, if the server allows it
Superscedes !1088 (closed), doesn't mark the game as modified, but disallows shaders when connecting to servers, unless the server allows it.
Edited by James R.
Superscedes !1088 (closed), doesn't mark the game as modified, but disallows shaders when connecting to servers, unless the server allows it.