[Bug 103150] New: SecondLife / Advanced Lighting Model / destroys world

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103150

            Bug ID: 103150
           Summary: SecondLife / Advanced Lighting Model / destroys world
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/AMDgpu
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: arne_woerner at yahoo.com
        QA Contact: xorg-team at lists.x.org

Created attachment 134752
  --> https://bugs.freedesktop.org/attachment.cgi?id=134752&action=edit
my SecondLife viewer's "About" page...

Hi!

When I play SecondLife I get a quite good frame rate out of my RX550...
... until I enable "Advanced Lighting Model" (ALM)
(because i hoped 2 c shadows at a decent frame rate with that new GPU (b4 i
used the APU's HD7660D and fglrx, which produced about 5fps when ALM was
enabled, but they looked good))...

Somehow a lot of things just disappear now until i move the camera really close
to them (and then it looks like ALM works fine, but it is a ridiculously small
area... about as big as a chest...)...
Sometimes I c the things flickering, when i move the camera back&forth in a
distance, that is "too" high, but then they disappear again, when the camera
stands still again (in a "too" high distance)...
Furthermore my viewer seems to think, that my RX550 can only handle "low-mid"
graphics quality, so that i have to override that manually to "mid-high"...

Videobenchmark.net lists the RX550 as "high end"...
https://www.videocardbenchmark.net/video_lookup.php?gpu=Radeon+RX+550&id=3761
so it should be able to present all the shadows (Firestorm only needs less than
1GiB of GPU memory, if i understand the "Preferences" dialog correctly)...
in fact it should even b able to present them at a good frame rate...
Is it possible to fix that?

Thx.

Bye
Arne

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