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

[bugzilla-daemon at freedesktop.org]

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 at lists.freedesktop.org
          Reporter: adf.lists at gmail.com
        QA Contact: dri-devel at 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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