This is what I thought. Now I wonder what is the added value of libdrm on top of the "DRM IOCTLs". The only thing I could think of is "sharing" the GPU IO memor

This is what I thought. Now I wonder what is the added value of libdrm on top of the "DRM IOCTLs". The only thing I could think of is "sharing" the GPU IO memory buffers among all GPU applications. And even that... Well, I really need to have a deeper look one day. Ah!