Opengl 4.4-- [best] Download Windows 10 64 Bit -

: This allows developers to map a buffer to the CPU's memory space and keep it mapped while the GPU is still using it. Enhanced Performance

Just install the latest graphics drivers for your specific GPU from the manufacturer's website. You don't download "OpenGL" separately. Opengl 4.4-- Download Windows 10 64 Bit

: To "get" OpenGL 4.4, you must update your GPU drivers (NVIDIA, AMD, or Intel). : This allows developers to map a buffer