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Commit 46396e97 authored by Dmitry Osipenko's avatar Dmitry Osipenko Committed by Marge Bot
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virgl: Fix unmapping of blob resources


OpenGL API calls like glClearBufferData() result in mapping/unmapping
of a given buffer by Mesa and unmapping of a host blob fails in
virglrenderer because VirGL driver uses command that is intended for
unmapping of a guest buffer. In particular this causes problem for the
"Total War: Warhammer" game that gets GL_OUT_OF_MEMORY error due to the
failed unmapping command. Fix this by setting the mapping usage flag in
accordance to the resource flags, allowing virgl_buffer_transfer_unmap()
to differentiate host buffer from guest.

Fixes: 3b54e583 ("virgl: support PIPE_CAP_BUFFER_MAP_PERSISTENT_COHERENT")
Signed-off-by: default avatarDmitry Osipenko <dmitry.osipenko@collabora.com>
Part-of: <mesa/mesa!17914>
parent b731be2e
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