[Mesa-dev] [PATCH 04/14] gallium: Document packed formats

[Jose Fonseca]

Series looks good to me too.

Jose

----- Original Message -----
> Signed-off-by: Adam Jackson <ajax at redhat.com>
> ---
>  src/gallium/docs/format.rst | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/src/gallium/docs/format.rst b/src/gallium/docs/format.rst
> index 2514656..e270d93 100644
> --- a/src/gallium/docs/format.rst
> +++ b/src/gallium/docs/format.rst
> @@ -6,7 +6,14 @@ Gallium format names mostly follow D3D10 conventions, with
> some extensions.
>  Format names like XnYnZnWn have the X component in the lowest-address n bits
>  and the W component in the highest-address n bits; for B8G8R8A8, byte 0 is
>  blue and byte 3 is alpha.  Note that platform endianness is not considered
> -in this definition.
> +in this definition.  In C:
> +
> +    struct xyzw8888 { uint8_t x, y, z, w; };
> +
> +Format aliases like XYZWstrq are (s+t+r+q)-bit integers in host endianness,
> +with the X component in the s least-significant bits of the integer.  In C:
> +
> +    uint32_t xyzw8888 = (x << 0) | (y << 8) | (z << 16) | (w << 24);
>  
>  Format suffixes affect the interpretation of the channel:
>  
> --
> 1.8.2.1
> 
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