Re: [Dri-devel] Re: Kind of success! (r128 on PPC (Re: LinuxPPC X Server))

On Mon, 7 Aug 2000, Michel [iso-8859-1] Dδnzer wrote:

Kostas Gewrgiou wrote:

quoted

quoted

The remaining problems are:

16 bit doesn't work neither with fbdev (colors completely off - does
aty128fb still use 15 bit in fact?) nor without (at least the grey tones
are right there - wrong endianness?)

Yes aty128fb still doesn't support 16 bit, you could run the r128 driver
without fbdev to get 16 bits, but the code to switch the framebuffer to do
byteswapping is missing so the colors will be wrong

Yep, that's the second thing I was referring to.

quoted

(easy to add though).

Where and how?

  Somewhere in R128ModeInit (or the functions that get called from it) will
do fine i think.
About how now look at the following code from aty128fb that does the same
thing.

    config = aty_ld_le32(CONFIG_CNTL) & ~3;
#if defined(__BIG_ENDIAN)
    if (par->crtc.bpp >= 24)
        config |= 2;    /* make aperture do 32 byte swapping */
    else if (par->crtc.bpp > 8)
        config |= 1;    /* make aperture do 16 byte swapping */
#endif
    aty_st_le32(CONFIG_CNTL, config);

  Kostas


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