[Mesa-dev] [PATCH 3/3] gallium/docs: add more info about TXF and MSAA textures

[Roland Scheidegger]

Am 02.08.2017 um 19:07 schrieb Brian Paul:
> If the texture is multisampled, the coord.w component indicates which
> sample to fetch.
> ---
>  src/gallium/docs/source/tgsi.rst | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst
> index d7817cc..5bf9e95 100644
> --- a/src/gallium/docs/source/tgsi.rst
> +++ b/src/gallium/docs/source/tgsi.rst
> @@ -951,7 +951,9 @@ XXX doesn't look like most of the opcodes really belong here.
>    image or PIPE_BUFFER resource. The source sampler may not be a CUBE or
>    SHADOW.  src 0 is a
>    four-component signed integer vector used to identify the single texel
> -  accessed. 3 components + level.  Just like texture instructions, an optional
> +  accessed. 3 components + level.  If the texture is multisampled, then
> +  the fourth component indicates the sample, not the mipmap level.
> +  p *srJust like texture instructions, an optional
Is that some rst syntax here or just a type?

Otherwise,
Reviewed-by: Roland Scheidegger <sroland at vmware.com>

>    offset vector is provided, which is subject to various driver restrictions
>    (regarding range, source of offsets). This instruction ignores the sampler
>    state.
>