https://bugs.freedesktop.org/show_bug.cgi?id=96343
Bug ID: 96343
Summary: oom since st/mesa: implement PBO downloads for
ReadPixels
Product: Mesa
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: dri-devel at lists.freedesktop.org
Reporter: adf.lists at gmail.com
QA Contact: dri-devel at lists.freedesktop.org
Created attachment 124282
--> https://bugs.freedesktop.org/attachment.cgi?id=124282&action=edit
oom
Tonga with xserver 1.8.3, agd5f drm-next-4.8-wip, git
mesa/llvm/libdrm/xf86-video-amdgpu.
Desktop is fluxbox = non-compositing.
Since -
commit ed0e9862c56d13381f0414b5a835fd31960edfe6
Author: Nicolai Hähnle <nicolai.haehnle at amd.com>
Date: Tue Apr 26 13:19:28 2016 -0500
st/mesa: implement PBO downloads for ReadPixels
v2: require PIPE_CAP_SAMPLER_VIEW_TARGET; technically only needed for some
of
the texture targets, but all hardware that has shader images should
also
have this cap.
I can provoke an oom on xorg as attached by displaying a couple of 1920 xwds
with display from ImageMagick and flipping between then, plus some middle mouse
clicking (which magnifys a section and gives info on the pixel clicked).
Oom is not instant - may take a couple of minutes clicking/flipping.
Polling free when doing this doesn't indicate any issue until it triggers so
it's not slowly leaking, but goes quickly at some point filling swap then oom.
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