CODEWITHSUNDEEP
c++openglsdlgame-engineglew
obsilp
obsilp

Reputation: 80

INVALID_ENUM using glew

I'm currently trying to program a litte game in c++ using SDL and glew. My problem is that whenever I try to use on of glew's functions (for example: glMatrixMode(GL_PROJECTION)), I get this error: GL_INVALID_ENUM.

That is how I create the window:

SDL_Init(SDL_INIT_EVERYTHING);

SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);

window = SDL_CreateWindow(title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
context = SDL_GL_CreateContext(window);

SDL_GL_SetSwapInterval(1);

That's the way how I initialize glew:

glewExperimental = GL_TRUE;
GLenum res = glewInit();
if (res != GLEW_OK) fprintf(stderr, "Error: '%s'\n", glewGetErrorString(res));

I tried to disable glewExperimental aswell but it changed nothing.

Upvotes: 0

Views: 181

Answers (1)

obsilp
obsilp

Reputation: 80

The problem was that I was using the core profile of OpenGL instead of using the compatibility profile to use deprecated parts of API. To solve this should replace

SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);

with:

SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);

Upvotes: 1

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