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

[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).

Marek