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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2007-06-04 04:55:36 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-06-08 08:21:15 -0300 |
| commit | b6cfe6af6bfb101212b217cba55012d1d35ab3a8 (patch) | |
| tree | 296808730368f11291635b0d8dbd7b550f6ce55e /drivers | |
| parent | 987e00ba5cf667beed2b88bd1d01150334cdb6dc (diff) | |
V4L/DVB (5736): Add V4L2_FBUF_CAP/FLAG_LOCAL/GLOBAL_INV_ALPHA
Michael Schimek requested the addition of inverted alpha framebuffer
caps/flags to support such hardware.
'Normal' alpha uses this formula to mix the framebuffer and video:
output = fb pixel * fb alpha + video pixel * (1 - fb alpha)
and the 'inverted' alpha uses this formula:
output = fb pixel * (1 - fb alpha) + video pixel * fb alpha
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions