The binding point needs to be part of the ShaderUniforms class because Vulkan will need this value to generate the declaration in the shader source.
There's still one issue here: Since OpenGL has no local render state, the buffer must be bound every time it is used. Once the code is better abstracted this should be moved to a higher level class that knows all associated data and how to set it up.
I missed this part when repurposing the vboindex members to store the index buffer offsets.
However, since both indices are needed, they need another set of variables.
On a fast and modern graphics card this is a lot faster than doing it per subsector but it may not be without drawbacks on older hardware so it will require some testing on older hardware.
For me Frozen Time's view over the bridge went from 46 fps to 51 fps with this change, the time saved was roughly 2 ms.
