On 03/03/2011 02:40 PM, Dave Airlie wrote:
On Fri, Mar 4, 2011 at 8:17 AM, Jose Fonseca<jfons...@vmware.com> wrote:
About a), one day we should have this in a library shared by mesa/gallium, but
until then anywhere is fine by me.
About b) please provide unorm8 support for all formats. It's useful for
debugging/displaying, e.g., writing to BMP files, or visualizing on a window.
There is already a helper function called util_format_fits_rgba8unorm (or
something like that) to determine whether a format can be faithfully
represented in unorm8 or not.
I don't understand how it can be useful though, if I have an image
internally represented at -128..127, and I dump it as unorm 0.255 it
is going to actually me less useful I would guess as I'd try and
interpret it. Though I've no idea what negative color looks like, the
hooks are pretty easy to add in, but I'd like to add something to warn
if they ever get used.
You could either clamp the signed values to [0,127] or bias them by
128 I guess. It's not a huge deal.
-Brian
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