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

[Samuel Pitoiset]

On 08/04/2017 10:33 AM, Marek Olšák wrote:
> 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.

Well, this is true, but re-uploading the whole array is costly...

> 
> Marek
>