uint64_t as buffer in 2.3 please

Graphics & Games Metal
rianflo OP
Created Jul ’20
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Please add support for uint64_t buffers.

I can reinterpret_cast an uint2 to a uint64_t and the metal compiler can generate load instructions to fetch uint2s.

The remainder is just unnecessary typing work for the programmer.



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Graphics and Games Engineer OP
Apple
Jul ’20
We have added support for uint64_t buffers in v2.3 of the Metal Shading Language.

Please note that 64-bit integers are only supported on MTLGPUFamily.apple3 and above.
On other GPU families 64-bit integers aren't fully supported yet.

0
rianflo OP
Aug ’20
That means the doc hasn't been updated yet?

https://developer.apple.com/metal/Metal-Shading-Language-Specification.pdf

"Note: Metal does not support buffers that contain long or ulong data types"


1
Graphics and Games Engineer OP
Apple
Aug ’20
Accepted Answer
Thanks for bringing this to our attention. We will be updating the docs soon.
0
uint64_t as buffer in 2.3 please
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