[Mesa3d-dev] Re: [Mesa3d-cvs] CVS Update: Mesa (branch: trunk)

[Brian P. <br...@va...>]

Gareth Hughes wrote:
> 
> CVSROOT:        /cvsroot/mesa3d
> Module name:    Mesa
> Repository:     Mesa/src/swrast/
> Changes by:     gareth@usw-pr-cvs1.     01/03/28 12:40:52
> 
> Log message:
>   More texture format updates.  Drivers now need only plug an appropriate
>   format into texImage->TexFormat, the rest is handled by core Mesa.


There's a problem.

The internalFormat parameter from glTexImage*D() is no longer being
stored as-is.  Instead, it's now a constant in each of the predefined
gl_texture_format structs.

When someone calls glGetTexLevelParameter(target, level,
GL_TEXTURE_INTERNAL_FORMAT, &value), value should return the
orginally requested internalFormat, not the best match, as
we're now doing.

The spec isn't 100% clear on this but that's what the SI does
and what Mesa used to do.

I can restore this if you're too busy.

If the user really wants to know how their texture was actually
stored, the only info they can get is via the GL_TEXTURE_RED/
GREEN/BLUE/ALPHA/LUMINANCE_SIZE, etc queries.

-Brian