[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

            Bug ID: 94471
           Summary: Tonga UVD 4Kx4K = failed to allocate a buffer
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: adf.lists@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

I see >= tonga uvd height has recently been increased -

https://cgit.freedesktop.org/mesa/mesa/commit/?id=353a4f844f9e845dad93de9c28fa0d484b4b92d3

radeon/uvd: increase max height to 4096 for VI and newer
With this issue 'mpv --hwdec=vdpau --vo=vdpau <stream>' fails
for vdpau decode if the stream height is 4096. Vdpau decode of
height upto 4096 is necessary usecase on amdgpu driver for VI
and newer platforms.

The fix is in driver specific implementation of "Decoder
Query Capabilities" API to return 4096 for VI and newer
platforms. With this fix vdpauinfo reports height support as
4096 and mpv for vdpau decode works fine for 4096 height streams.

On agd5f drm-fixes-4.5 4096x4096 fails for me (also fails with --vo vdpau)


andy [~]$ mpv --hwdec=vdpau /mnt/sdb1/ffmpeg-mpl-tests/x264-4096.mkv 
Playing: /mnt/sdb1/ffmpeg-mpl-tests/x264-4096.mkv
 (+) Video --vid=1 (*) (h264)
amdgpu: Failed to allocate a buffer:
amdgpu:    size      : 0 bytes
amdgpu:    alignment : 4096 bytes
amdgpu:    domains   : 2
amdgpu: Failed to allocate a buffer:
amdgpu:    size      : 0 bytes
amdgpu:    alignment : 4096 bytes
amdgpu:    domains   : 2
EE radeon_uvd.c:1109 ruvd_create_decoder UVD - Can't allocated bitstream
buffers.
[vo/opengl/x11] Disabling screensaver failed (-1). Make sure the
xdg-screensaver script is installed.
Using software decoding.
VO: [opengl] 4096x4096 => 7282x4096 yuv420p

dmesg

[ 8308.529176] [TTM] Illegal buffer object size
[ 8308.529210] [drm:amdgpu_gem_object_create [amdgpu]] *ERROR* Failed to
allocate GEM object (0, 2, 4096, -22)
[ 8308.529326] [TTM] Illegal buffer object size
[ 8308.529339] [drm:amdgpu_gem_object_create [amdgpu]] *ERROR* Failed to
allocate GEM object (0, 2, 4096, -22)

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #1 from Christian König <deathsimple@vodafone.de> ---
Hi Andy,

sounds like the estimated bitstream buffer size doesn't fit into a 32bit
integer any more.

Where can I download such a stream for testing?

Thanks,
Christian.

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #2 from Andy Furniss <adf.lists@gmail.com> ---
(In reply to Christian König from comment #1)
> Hi Andy,
> 
> sounds like the estimated bitstream buffer size doesn't fit into a 32bit
> integer any more.
> 
> Where can I download such a stream for testing?

I wondered that myself so I made one with ffmpeg/libx264.

Further testing shows that 4080x4080 works and >= 4082x4082 fails.

I tried getting libx264 to make constrained baseline but no difference.

These 2 were made like 

ffmpeg -i a-2160p60.mkv -vf scale=w=4080:h=4080 -c:v libx264 -vframes 10 
x264-4080.mkv

as they are only 10 frames tested like -

mpv --speed=0.1 -fs --hwdec=vdpau x264-4080.mkv

While here a shameless bump of a similar VCE issue :-)

I don't know the precise fail point for VCE but 3840x2160 fails 2560x1440
works.

https://bugs.freedesktop.org/show_bug.cgi?id=91281

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #3 from Andy Furniss <adf.lists@gmail.com> ---
Created attachment 122202
  --> https://bugs.freedesktop.org/attachment.cgi?id=122202&action=edit
4082 fails

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #4 from Andy Furniss <adf.lists@gmail.com> ---
Created attachment 122203
  --> https://bugs.freedesktop.org/attachment.cgi?id=122203&action=edit
4080 works

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #5 from Andy Furniss <adf.lists@gmail.com> ---
Of course those are square - It is possible to get height 4096 working as long
as width is lower than 4082.

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

--- Comment #6 from Andy Furniss <adf.lists@gmail.com> ---
Mesa commit 

commit 51227b41c6b026f5b0a3925093b91800cdfcc923
Author: Indrajit Das <indrajit-kumar.das@amd.com>
Date:   Fri May 27 18:27:15 2016 +0530

    radeon/uvd: fix overflow error while calculating bit stream buffer size


gets rid of the errors and so mpv/mplayer will attempt to use uvd, but no video
is displayed, just a black screen.

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[Bug 94471] Tonga UVD 4Kx4K = failed to allocate a buffer

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https://bugs.freedesktop.org/show_bug.cgi?id=94471

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #7 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1230.

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