<p>Older Opengl Api documentation can be found at this <a href="https://www.khronos.org/registry/OpenGL/index_gl.php#oldspecs" rel="nofollow noreferrer"> Official Khronos Registry</a></p>

CC BY-SA 4.0
2020-04-30T04:40:25.993Z
2020-04-30T04:40:25.993Z
srt111
<p>OpenGL 4.5 reference pages have tables at the bottom of each page indicating in which version particular function was added. For example, if you look at <a href="https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glTexStorage2D.xhtml" rel="nofollow noreferrer">glTexStorage2D</a>, you can see that it was introduced in 4.2, while its DSA equivalent in 4.5.</p>

<p>I think that the reason for having separate pages for 2.1 and 4.5 is that the former includes legacy functions, while the latter has only core profile functions.</p>

CC BY-SA 4.0
2020-05-03T13:33:59.533Z
2020-05-03T13:33:59.533Z
joe_chip
<p>I am currently using a older IntelHd Gpu which supports <strong>Opengl3.1 (Glsl #version140)</strong>.  </p>

<p>While trying to locate the relevant Api for this version ,the Khronos site only provides  <a href="https://www.khronos.org/registry/OpenGL-Refpages/" rel="nofollow noreferrer">documentation for Opengl2.1 and Opengl4.5</a>.    </p>

<p>On their <a href="https://github.com/KhronosGroup/OpenGL-Refpages" rel="nofollow noreferrer">Github page</a> documentation for Opengl2.1 and Opengl4 is available.  </p>

<p>How to locate the Api for Opengl 3.1?</p>

CC BY-SA 4.0
2020-04-29T17:28:26.730Z
While this question is totally valid to be asked here, I would suggest to ask directly in the OpenGL forums: https://community.khronos.org/ --- Alternatively, you might open an issue on their GitHub site. You will probably get a quicker answer there. In case you do, please answer your own question with the links/information you got there. :)
wychmaster
<opengl><api>
Older Api documentation
srt111
# Older Api documentation

(Asked by: username_0 on 2020-04-29)

I am currently using a older IntelHd Gpu which supports **Opengl3.1 (Glsl #version140)**.

While trying to locate the relevant Api for this version ,the Khronos site only provides [documentation for Opengl2.1 and Opengl4.5](https://www.khronos.org/registry/OpenGL-Refpages/).

On their [Github page](https://github.com/KhronosGroup/OpenGL-Refpages) documentation for Opengl2.1 and Opengl4 is available.

How to locate the Api for Opengl 3.1?

**Tags:** opengl, api

> **Comments:**
> **username_1**: While this question is totally valid to be asked here, I would suggest to ask directly in the OpenGL forums: https://community.khronos.org/ --- Alternatively, you might open an issue on their GitHub site. You will probably get a quicker answer there. In case you do, please answer your own question with the links/information you got there. :)  

---

## 2 answers

### Answer by username_0 on 2020-04-30. Score: 1 | Accepted answer

Older Opengl Api documentation can be found at this  [Official Khronos Registry](https://www.khronos.org/registry/OpenGL/index_gl.php#oldspecs)


---

### Answer by username_2 on 2020-05-03. Score: 0

OpenGL 4.5 reference pages have tables at the bottom of each page indicating in which version particular function was added. For example, if you look at [glTexStorage2D](https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/glTexStorage2D.xhtml), you can see that it was introduced in 4.2, while its DSA equivalent in 4.5.

I think that the reason for having separate pages for 2.1 and 4.5 is that the former includes legacy functions, while the latter has only core profile functions.


---

