OpenGL 2.1 and glBegin()/glEnd()

Question

there are lots of OpenGL tutorials out there - I think more than 90% of them make use of glBegin()/glEnd() with vertices set between these two calls. Now I found some people telling me these functions are deprecated and no longer available in newer versions of OpenGL.

So: is this correct?

In my application I have to be compatible with OpenGL 2.1.

https://open.gl is a decent tutorial that uses core OpenGL. – Colonel Thirty Two Oct 06 '15 at 16:48 — Colonel Thirty Two, Oct 06 '15 at 16:48

score 3 · Answer 1 · edited May 23 '17 at 11:58

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Yes, glBegin()/glEnd() methods are deprecated. glDrawArrays is a modern approach and it is available in OpenGL 2.1. Here is related question on SO.

Also, I doubt about this 90% value.

edited May 23 '17 at 11:58

Community

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answered Oct 06 '15 at 10:54

Ramil Kudashev

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"Also, I doubt about this 90% value." I've seen mostly outdated OpenGL tutorials too, so I think the number 90% is about true. – lisyarus Oct 06 '15 at 11:02
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`glDrawArrays()` is much older. It was added in OpenGL 1.1. – Reto Koradi Oct 06 '15 at 15:43
Just to emphase how much older it is: OpenGL-1.1 was released in 1996. OpenGL-2 was released in 2004. – datenwolf Oct 06 '15 at 21:13
So the question is: is glDrawArrays deprecated or not? – Elmi Oct 07 '15 at 05:32

score 0 · Answer 2 · answered Oct 06 '15 at 16:43

The answer is yes and no. The spirit of OpenGL 2 and more is to no longer use immediate mode and fixed pipeline. From OpenGL 3, these are "deprecated". But fortunately at the same time was recognize "Legacy OpenGL" And ARB compatibility extension. So you do can use still use them (modulo some variations between OS about what is inside or not).

OpenGL 2.1 and glBegin()/glEnd()

2 Answers2