Re: [Mesa-dev] [PATCH 00/10] DRI interface, gallium: User-specified transfer stride

[Marek Olšák]

FYI, this series is open for reviews again and planned to be pushed soon.

Marek

On Thu, Apr 26, 2018 at 10:13 PM, Marek Olšák  wrote:

> Please ignore this series.
>
> Marek
>
> On Wed, Apr 25, 2018 at 5:16 PM, Marek Olšák  wrote:
>
>> Hi,
>>
>> This feature is for gralloc, which requires drivers to be able to map
>> an image with a stride of its own choosing, which is usually the same
>> as the image stride. This is a very silly feature that probably comes
>> from designing around mobile GPUs, and must be emulated on everything
>> else.
>>
>> GCN is pretty limited here. A 16x16 tiled image can have a stride of 16
>> because it's tiled, but the stride of a linear mapping of that image
>> will be 64 on <= Polaris, or 256 on >= Vega.
>>
>> The hardware doesn't have the capability to give you a stride that is
>> not a multiple of 64 or 256, so gralloc will have to deal with it.
>>
>> Nicolai wrote the first 6 commits. I added the last 4.
>> (so I'll put my Rb on the first 6)
>>
>> Please review,
>>
>> Thanks,
>> Marek
>>
>
>
___
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev

Re: [Mesa-dev] [PATCH 00/10] DRI interface, gallium: User-specified transfer stride

[Marek Olšák]

Please ignore this series.

Marek

On Wed, Apr 25, 2018 at 5:16 PM, Marek Olšák  wrote:

> Hi,
>
> This feature is for gralloc, which requires drivers to be able to map
> an image with a stride of its own choosing, which is usually the same
> as the image stride. This is a very silly feature that probably comes
> from designing around mobile GPUs, and must be emulated on everything
> else.
>
> GCN is pretty limited here. A 16x16 tiled image can have a stride of 16
> because it's tiled, but the stride of a linear mapping of that image
> will be 64 on <= Polaris, or 256 on >= Vega.
>
> The hardware doesn't have the capability to give you a stride that is
> not a multiple of 64 or 256, so gralloc will have to deal with it.
>
> Nicolai wrote the first 6 commits. I added the last 4.
> (so I'll put my Rb on the first 6)
>
> Please review,
>
> Thanks,
> Marek
>
___
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev

[Mesa-dev] [PATCH 00/10] DRI interface, gallium: User-specified transfer stride

[Marek Olšák]

Hi,

This feature is for gralloc, which requires drivers to be able to map
an image with a stride of its own choosing, which is usually the same
as the image stride. This is a very silly feature that probably comes
from designing around mobile GPUs, and must be emulated on everything
else.

GCN is pretty limited here. A 16x16 tiled image can have a stride of 16
because it's tiled, but the stride of a linear mapping of that image
will be 64 on <= Polaris, or 256 on >= Vega.

The hardware doesn't have the capability to give you a stride that is
not a multiple of 64 or 256, so gralloc will have to deal with it.

Nicolai wrote the first 6 commits. I added the last 4.
(so I'll put my Rb on the first 6)

Please review,

Thanks,
Marek
___
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev