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Texture Cache on Mali-G76

ossan

Hi,

I am trying to utilize a texture cache for non-texture data(binary tree structure) with OpenCL on Mali-G76

since L1 seems very slow for random tree data access.

In my understanding, data will be in Texture Cache with using OpenCL API clCreateImage.

So I force to put tree data structures into tan Image2D area allocated by the API.

And ithis approach significantly improves performance so far.

Currently I put the structures with raster scan manner in Image2D area.

In addition, Someone suggested me to try z-ordering for more TC performance

https://en.wikipedia.org/wiki/Z-order_curve

So my question is, is it possible to improve performance by putting the data structure with z-ordering manner?

I also heard that some GPUs support z-ordering by hardware, in that case, z-ordering by kernel code may be in vain or get worse.

I could not find any Mali document related to Texture Cache, so if anyone give any information about TC, it would be really appreciated.

Regards