[Mesa3d-dev] Texture formats

[Gareth H. <ga...@va...>]

I'm restoring the behaviour of texImage->Format, and will set
texImage->IntFormat to the GL format corresponding to the internal Mesa
format instead of the internalFormat parameter given by the user.  This
gives the behaviour I'm looking for (ie. users can find out what format
the texture is stored in, and by checking the individual component sizes
can acurately determine how the image is stored).

As far as I can tell, the texImage->Type field is redundant.  We have
the number of bytes per texel stored in texImage->TexFormat->TexelBytes,
and can thus remove the use of texImage->Type in texstore.c.  We'll need
to keep the information around so the software rasterizer can determine
if it can use an optimize CHAN_TYPE texture sampling function.  Thus,
I'll remove the BaseFormat field from gl_texture_format, but keep and
rename the BaseType field.  The software rasterizer will then check the
gl_texture_format's Type field as required.

-- Gareth