[Mesa-dev] [PATCH 00/14] AMD GCN tile swizzle

Bas Nieuwenhuizen bas at basnieuwenhuizen.nl
Tue Aug 1 09:05:20 UTC 2017

On Tue, Aug 1, 2017 at 3:50 AM, Dave Airlie <airlied at gmail.com> wrote:
> On 1 August 2017 at 09:40, Marek Olšák <maraeo at gmail.com> wrote:
>> Hi,
>> This might slightly increase MRT performance. You need the amdgpu
>> kernel driver if you want it for SI and CI.
>> I've fixed a few of issues with the original code, enabled it for
>> mipmapped textures, and added GFX9 support. I wasn't able to make it
>> work with mipmapping on SI. There is also a hack to make mipmapping
>> work with DCC on VI - my solution is to overallocate DCC to make
>> corruption go away with tile swizzling.
>> I've tested SI, CI, VI.
>> I haven't tested GFX9. The GFX9 patch is just the first version for
>> testing. With current GB_ADDR_CONFIG, only Vega10 can do tile
>> swizzling. The code doesn't do anything for Raven due to its (possibly
>> incorrect) GB_ADDR_CONFIG.
> I think this will regress radv, as I don't see it setting the
> SHAREABLE flag anywhere
> in the radv code, if I missed that.

I think we should actually be ok, since we don't set the surf_index
ptr in radv if the image is shareable.

> If you have a branch I'm happy to check it, or just run the Vulkan
> deferred demo from
> https://github.com/SaschaWillems/Vulkan/
> Otherwise it all looks reasonable, I should probably add the fmask
> counter to radv once it lands.
> So for the rest of them
> Reviewed-by: Dave Airlie <airlied at redhat.com>
> Dave.
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