diff --git a/src/video/x11/SDL_x11opengl.c b/src/video/x11/SDL_x11opengl.c index cc5770947..96f5079ac 100644 --- a/src/video/x11/SDL_x11opengl.c +++ b/src/video/x11/SDL_x11opengl.c @@ -64,6 +64,11 @@ #define GLX_CONTEXT_DEBUG_BIT_ARB 0x0001 #define GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB 0x0002 +#ifndef GLX_EXT_swap_control +#define GLX_SWAP_INTERVAL_EXT 0x20F1 +#define GLX_MAX_SWAP_INTERVAL_EXT 0x20F2 +#endif + /* Typedef for the GL 3.0 context creation function */ typedef GLXContext(*PFNGLXCREATECONTEXTATTRIBSARBPROC) (Display * dpy, GLXFBConfig config,