[Mesa-dev] [Bug 89068] glTexImage2D regression by texstore_rgba switch to _mesa_format_convert

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Feb 12 06:17:02 PST 2015


--- Comment #8 from Jason Ekstrand <jason at jlekstrand.net> ---
(In reply to Iago Toral from comment #7)
> After testing with a binary provided by the reporter and comparing with the
> old code it looks like the problem comes from the fact that they are using
> transferOps for color scaling (which is effectively scaling 50% alpha values
> to 100%)... and we are not dealing with that in texstore_rgba.
> If we need to apply transferOps (we can call
> _mesa_texstore_needs_transfer_ops to check this) then we have to convert
> from the src format to RGBA_FLOAT, so we can call calling
> mesa_apply_rgba_transfer_ops(), then convert the result from RGBA_FLOAT to
> the dst format...
> I think we should do this after we have handled swaping scenarios and before
> the current call to _mesa_format_convert.

Sound good to me.  I'm kind of surprised piglit didn't catch that.

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