Clarification on GLU deprecation


#1

I asked this question on StackOverflow, but I wasn’t entirely satisfied with the answer:

GLFW says:

GLU has been deprecated and should not be used in new code, but some legacy code requires it.

Many online references I’ve found refer to the gluTessellation as a preferred method for triangulating polygons. I can’t find many other that mentions that these functions (or really any of GLU) have been deprecated or that an alternative should be used, including on the [GLU Wikipedia page](\https://en.wikipedia.org/wiki/OpenGL_Utility_Library). The Khronos OpenGL wiki mentions that the view/perspective glu* functions use the matrix stack that no longer exists, but nothing related to the gluTess* functions.

The posted Stack Overflow answer implies that the OpenGL functions used by gluTess* also no longer exist in current OpenGL implementations, and any software relying on them simply won’t work.

For other glu* functions, GLFW has mentioned alternative libraries, like [linmath](\https://github.com/datenwolf/linmath.h). If we should not be using gluTess* functions, is there a list similar to [this one](\https://www.khronos.org/opengl/wiki/Related_toolkits_and_APIs#3D_File_Libraries) that provides third party implementation of polygon triangulation?

P. S. apologies for the ugly links (still on the 2-link, new user limit)


#2

Check out Libtess2 https://github.com/memononen/libtess2


#3

Ooh, I should add a link to that.

Edit:
https://github.com/glfw/glfw/commit/5a11d1994088ed777e90a4fbaa7928ae035a3e3c