Accelerating TFP for R200 - texture format Voodoo?

[Michel Dänzer]

On Mon, 2007-06-18 at 20:57 +0100, Chris Rankin wrote:
> 
> Could someone help me translate these texture format constants into something R200-compatible,
> please?
> 
> R300_EASY_TX_FORMAT(X, Y, Z, W, W8Z8Y8X8)
> R300_EASY_TX_FORMAT(X, Y, Z, ONE, W8Z8Y8X8)
> R300_EASY_TX_FORMAT(X, Y, Z, ONE, Z5Y6X5)

I'd pick appropriate entries from tx_table_le in r200_texstate.c.


> I am also wondering how best to port the following reference to the "image_override" field, from
> the r300SetTexImages() function:

[...]

> I can see the "heritage" from the R200SetTexImages() function:
> 
>    if (baseImage->IsCompressed) 
>       t->pp_txpitch = (tObj->Image[0][t->base.firstLevel]->Width + 63) & ~(63);
>    else
>       t->pp_txpitch = ((tObj->Image[0][t->base.firstLevel]->Width * texelBytes) + 63) & ~(63);
>    t->pp_txpitch -= 32;
> 
> except that it's too different for me to just take an educated guess.

t->pp_txpitch corresponds to t->pitch_reg, so you should probably just
skip this block if (t->image_override) to leave the value set in
r200SetTexOffset.


P.S. This is no longer about xf86-video-ati, so please consider moving
to the dri-devel or mesa3d-dev list.

-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer