[Mesa-dev] [PATCH 1/2] gallium/docs: improve docs for SAMPLE_POS, SAMPLE_INFO, TXQS, MSAA semantics

[Roland Scheidegger]

Am 22.08.2017 um 17:15 schrieb Marek Olšák:
> On Sun, Aug 20, 2017 at 12:32 AM, Roland Scheidegger <sroland at vmware.com> wrote:
>> Am 19.08.2017 um 21:32 schrieb Marek Olšák:
>>> How about we remove all opcodes that are unused? Like:
>>>
>>> SAMPLE_POS
>>> SAMPLE_INFO
>>> SAMPLE
>>> SAMPLE_I
>>> SAMPLE_I_MS
>>> SAMPLE_B
>>> SAMPLE_C
>>> SAMPLE_C_LZ
>>> SAMPLE_D
>>> SAMPLE_L
>>> GATHER4
>>> SVIEWINFO
>> These are all d3d10 opcodes, and we need them (llvmpipe supports all of
>> them with the exception of sample_pos and sample_info, right now). (It's
> 
> SAMPLE_INFO is almost the same as TXQS and given the current state of
> driver support, it would be better to remove SAMPLE_INFO and keep
> TXQS.
> 
> SAMPLE_INFO returns (samples, 0, 0, 0), while TXQS returns (samples,
> undef, undef, undef).
> 
> There is also RESQ, which returns (w, h, d|layers, samples).
> 

They take different register types, however.

Roland