[Mesa-dev] [PATCH v2 6/6] radeonsi: try to re-use previously deleted bindless descriptor slots

[Marek Olšák]

On Fri, Aug 4, 2017 at 10:06 AM, Samuel Pitoiset
<samuel.pitoiset at gmail.com> wrote:
>
>
> On 08/01/2017 09:54 PM, Marek Olšák wrote:
>>
>> Hi Samuel,
>>
>> Can you move this slot allocator into a util module? It seems generic
>> enough that it could be reused for "handle" and "ID" allocations.
>>
>> Some additional notes:
>> - a bit array of uin32_t would be better. bool is too large (1 byte).
>> - "free" is the inverse of "used", so the "used" array is redundant.
>
>
> Yeah, but we have to keep track of two different arrays. When a texture
> handle is destroyed, the ID can be re-used but not right now, because the
> GPU can still use the descriptor.

Not true. You can reuse all freed slots immediately if you re-upload
the whole array instead of using WRITE_DATA.

Marek