[Mesa-dev] [PATCH 00/18] Gallium blitter optimizations

[Marek Olšák]

On Mon, Aug 21, 2017 at 2:41 AM, Dave Airlie <airlied at gmail.com> wrote:
> On 21 August 2017 at 10:22, Dave Airlie <airlied at gmail.com> wrote:
>> Hi Gert,
>>
>> Can you test this along with the fetch shader patch Marek sent?
>>
>> I'm giving it a piglit run now.
>
> Actually that patch is probably not necessary,
>
> I think you need to fill in 0 for the 4th 2D coordinate for LD to be used.
>
> TGSI spec for LD says it takes level in the last channel of the coord, and you
> never set it, whereas the old blitter path set it correctly.

radeonsi always uses TXF_LZ with u_blitter. That way level=0 is
implied by the instruction. The CAP demands that both TXF_LZ and
TEX_LZ are supported.

Marek