GL_NVX_progress_fence
https://www.khronos.org/registry/OpenGL/extensions/NVX/NVX_progress_fence.txt
GL_NVX_progress_fence

	void glClientWaitSemaphoreui64NVX (GLsizei fenceObjectCount, const GLuint* semaphoreArray, const GLuint64 *fenceValueArray)
	void glSignalSemaphoreui64NVX (GLuint signalGpu, GLsizei fenceObjectCount, const GLuint* semaphoreArray, const GLuint64 *fenceValueArray)
	void glWaitSemaphoreui64NVX (GLuint waitGpu, GLsizei fenceObjectCount, const GLuint* semaphoreArray, const GLuint64 *fenceValueArray)