Re: Choosing the correct framebuffer configuration

Jon Smirl wrote:

If I understand things correctly the framebuffer config is supposed to
be controlled by the transp/red/blue/green fields of fb_var_screeninfo
during check_var. These fields are then combined to compute the
bits_per_pixel.

radeonfb is working from the other direction, it starts with bpp and
then computes ARGB. This looks wrong to me.

16bpp aIndex 88 = 8/8

Set argb.length = 8, rgb.offset = 0, t.offset = 8.
The transp.offset differentiates ARGB8 from A8_RGB8.

Tony


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