Sorry for the late reply!
On 2015-05-28 14:25, Emil Velikov wrote:
If you
create your primary plane with a XRGB-type format then this patch
doesn't change anything. If you create it with an ARGB-type format
then
I can assume that the user wants an alpha-channel (he explicitly asks
for it).
True. But the test might be assuming that alpha is always 255, thus it
expects that the output for XRGB and ARGB type formats is the same.
I still don't understand this part at all. What "test" are we actually
talking about? Do you mean some test application that somehow internally
uses output from libdrm's modetest? I have trouble seeing how this
should work at all? If this patch changes anything then it's visual
output on the screen (assuming that the DRM driver somehow interprets
the content of the 'X' channel). So only something that a human
inspecting the screen could detect.
Or am I missing something here?
Obviously the likely-hood of all that is negligible, esp. considering
the benefit that the patch brings.
I'm picking libdrm patches off the list as we speak, which will include
both of these.
Thanks
Emil
With best wishes,
Tobias
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