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glfwSwapInterval(1) doesn't seem to be working for me. If I force VSync in CCC or setVerticalSyncEnabled(true) in SFML my fps drops to 60, but GLFW just keeps running at 9000 fps. Am I going about this the wrong way or is GLFW bugged?
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glfwSwapInterval (int interval) Sets the swap interval for the current context.
Once you've made your GL context current via glfwMakeContextCurrent() you can use glfwSwapInterval(0) to request that vsync be disabled: int main( int, char** ) { GLFWwindow* window; glfwInit(); window = glfwCreateWindow( 640, 480, "GLFW", NULL, NULL ); glfwMakeContextCurrent( window ); glfwSwapInterval( 0 ); ...
Well looks like GLFW doesn't want to turn VSync on when desktop compositing is enabled. If you want VSync anyway this will work on Windows:
#ifdef _WIN32
// Turn on vertical screen sync under Windows.
// (I.e. it uses the WGL_EXT_swap_control extension)
typedef BOOL (WINAPI *PFNWGLSWAPINTERVALEXTPROC)(int interval);
PFNWGLSWAPINTERVALEXTPROC wglSwapIntervalEXT = NULL;
wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)wglGetProcAddress("wglSwapIntervalEXT");
if(wglSwapIntervalEXT)
wglSwapIntervalEXT(1);
#endif
For other OSs google will help you.
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