OpenGL: glGetError() returns invalid enum after call to glewInit()

Question

I use GLEW and freeglut. For some reason, after a call to glewInit(), glGetError() returns error code 1280, even with glewExperimental = GL_FALSE.

I cannot compile

Answer 1

Did you see the comment on this wiki page?

http://www.opengl.org/wiki/OpenGL_Loading_Library

It mentions why this occurs, and it says "in some cases you may still get GL_INVALID_ENUM after specifying glewExperimental depending on your glew version".

It sounds like it might be safe to ignore as long as you're not seeing any other problems.

Answer 2

It seems glew just does not work correctly... The easiest solution for me was using libepoxy. It does not require any init thing. Just replace your

#include <GL/glew.h>

with

#include <epoxy/gl.h>
#include <epoxy/glx.h>

and remove all the glew code. If you use gcc, you will also have to replace "-lGLEW" with "-lepoxy". That's it. For example I have something like:

g++ main.cpp -lepoxy -lSDL2 -lSDL2_image -lSDL2_mixer -lglut -lGLU -o main

It seems to be important to keep epoxy flag before others.