GLFWAPI int glfwInit(void)
{
if (_glfwInitialized)
return GLFW_TRUE;
memset(&_glfw, 0, sizeof(_glfw));
if (!_glfwPlatformInit())
{
_glfwPlatformTerminate();
return GLFW_FALSE;
}
_glfwInitVulkan();
_glfw.monitors = _glfwPlatformGetMonitors(&_glfw.monitorCount);
_glfwInitialized = GLFW_TRUE;
_glfw.timerOffset = _glfwPlatformGetTimerValue();
// Not all window hints have zero as their default value
glfwDefaultWindowHints();
return GLFW_TRUE;
}
GLFWAPI void glfwSetTime(double time)
{
_GLFW_REQUIRE_INIT();
if (time != time || time < 0.0 || time > 18446744073.0)
{
_glfwInputError(GLFW_INVALID_VALUE, "Invalid time %f", time);
return;
}
_glfw.timerOffset = _glfwPlatformGetTimerValue() -
(uint64_t) (time * _glfwPlatformGetTimerFrequency());
}
GLFWAPI uint64_t glfwGetTimerValue(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0);
return _glfwPlatformGetTimerValue();
}
GLFWAPI double glfwGetTime(void)
{
_GLFW_REQUIRE_INIT_OR_RETURN(0.0);
return (double) (_glfwPlatformGetTimerValue() - _glfw.timerOffset) /
_glfwPlatformGetTimerFrequency();
}