On 2016-01-04 12:14, Alex Deucher wrote:
On Mon, Jan 4, 2016 at 12:57 PM, Jay Cornwall <jay@xxxxxxxxxxxx> wrote:
Hi,
dce4_crtc_do_set_base is the only location in which
EVERGREEN_GRPH_CONTROL
is updated. This currently configures a non-tiled framebuffer on my SI
system.
This design prevents drmModePageFlip from handling a framebuffer with
a
different tiling configuration.
Is this the intended architecture? i.e. All surfaces provided to
drmModePageFlip should match the initial framebuffer layout, or should
EVERGREEN_GRPH_CONTROL be updated on every page flip?
Pageflipping is only available between surfaces of the same format
(i.e., we only update the base address, not the other parameters).
Thanks, I got it now. KWin/Wayland is only calling drmModeSetCrtc when
the buffer stride changes, but flipping once from a dumb buffer to a GBM
buffer.
I've filed: https://bugs.kde.org/show_bug.cgi?id=357543
--
Jay Cornwall
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