Warning

The renderer is entirely dependent on request features in the underlying graphics API to retrieve this information, and that is in tern entirely dependent on the reported values from the graphics driver. It has been observed that is frequent for graphics drivers to report inaccurate information about their memory totals. This may have been done deliberately under older APIs where 32-bit integer limits started presenting problems for devices as memory sizes reached the 2GB and 4GB thresholds. The various graphics APIs also have problems with ambiguities on how memory totals should be reported, especially where there are different types of dedicated memory, such as a dedicated upload heap. It is common to see significant variation between reported memory totals for the same device between different graphics APIs. The totals reported on newer generation APIs such as Vulkan and Direct3D 12 are generally more reliable than older APIs such as OpenGL, however it is advised not to rely on these numbers too heavily in your application. It may be appropriate to examine the reported memory totals when making relative judgements on the best graphics device to select, however caution is advised when attempting to use these numbers for anything other than reporting purposes.