EGL on linux without X

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I am trying to use PyOpenGL with an EGL context on a linux system without X
server.

I create a context similar to
https://github.com/tensorflow/lucid/blob/master/lucid/misc/gl/glcontext.py#L79


Context seems fine, but I get errors when calling various OpenGL functions,
e.g.

*OpenGL.error.NullFunctionError: Attempt to call an undefined function
glTexStorage2D, check for bool(glTexStorage2D) before calling*

Any ideas what's the problem?

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<div dir=3D"ltr"><div dir=3D"ltr"><div>I am trying to use PyOpenGL with an =
EGL context on a linux system without X server.</div><div><br></div><div>I =
create a context similar to</div><div><a href=3D"https://github.com/tensorf=
low/lucid/blob/master/lucid/misc/gl/glcontext.py#L79">https://github.com/te=
nsorflow/lucid/blob/master/lucid/misc/gl/glcontext.py#L79</a>=C2=A0=C2=A0<b=
r></div><div><br></div><div>Context seems fine, but I get errors when calli=
ng various OpenGL functions, e.g.</div><div><br></div><div><i>OpenGL.error.=
NullFunctionError: Attempt to call an undefined function glTexStorage2D, ch=
eck for bool(glTexStorage2D) before calling</i></div><div><i><br></i></div>=
<div>Any ideas what&#39;s the problem?</div></div></div>

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