You most likely still need to do all the work to manage texture caches because first of all, you need to create texture objects in the host graphics api based o

You most likely still need to do all the work to manage texture caches because first of all, you need to create texture objects in the host graphics api based on what's essentially just memory. On top of that, GC/Wii texture formats might be different from what the host can support. From my understanding it's not that useful for reading back either as the main bottleneck there is the fact that you need to sync gpu and cpu rather than transfer speed.