How to set SDL_GL_SWAP_CONTROL

SDL Development
1

Hi all

How should I set this flag? I’ve tried sending it with the other flags
in SDL_SetVideoMode, and setting it via SDL_GL_SetAttribute (before
calling SDL_SetVideoMode), without any luck.

I’ve got an ATI X300 which, AFAIK, supports vsync.

Thanks in advance
/Per Thulin

2

Per Thulin wrote:

How should I set this flag? I’ve tried sending it with the other flags
in SDL_SetVideoMode, and setting it via SDL_GL_SetAttribute (before
calling SDL_SetVideoMode), without any luck.

SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1); (or whatever else you want
instead of “1”) is correct, and it works for me on Mac OS X.

-Christian

3

Christian Walther wrote:

Per Thulin wrote:

How should I set this flag? I’ve tried sending it with the other flags
in SDL_SetVideoMode, and setting it via SDL_GL_SetAttribute (before
calling SDL_SetVideoMode), without any luck.

SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1); (or whatever else you want
instead of “1”) is correct, and it works for me on Mac OS X.

-Christian

Hmm, that’s weird – exactly what I tried.

When asking what its value is using SDL_GL_GetAttrute, I get back
"2293728". I don’t really know how to interpret that.

Anyway, thanks for your response.

/Per Thulin

4

Per Thulin wrote:

How should I set this flag? I’ve tried sending it with the other flags
in SDL_SetVideoMode, and setting it via SDL_GL_SetAttribute (before
calling SDL_SetVideoMode), without any luck.

Set it with SDL_GL_SetAttribute() after setting up video with
SDL_SetVideoMode().

When asking what its value is using SDL_GL_GetAttrute, I get back
"2293728". I don’t really know how to interpret that.

On which platform, or with which SDL subsystem, is this?

  • Per