[Bug 103814] incorrect dust rendering in hl2ep1

[Bug 103814] incorrect dust rendering in hl2ep1

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https://bugs.freedesktop.org/show_bug.cgi?id=103814

            Bug ID: 103814
           Summary: incorrect dust rendering in hl2ep1
           Product: Mesa
           Version: 17.2
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: 375gnu@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 135585
  --> https://bugs.freedesktop.org/attachment.cgi?id=135585&action=edit
example of incorrect rendering

Hi,

Mesa 17.2 and above incorrectly renders dust in hl2ep1, it looks like the
screen is divided into four parts and only one or two of them are filled with
the dust.

I've checked 17.3.0~rc3, 17.2.5, they have this issue. 17.1.5 doesn't have it.

I use Radeon 7750.

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[Bug 103814] incorrect dust rendering in hl2ep1 with mesa 17.2 and above

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https://bugs.freedesktop.org/show_bug.cgi?id=103814

Hleb Valoshka <375gnu@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|incorrect dust rendering in |incorrect dust rendering in
                   |hl2ep1                      |hl2ep1 with mesa 17.2 and
                   |                            |above

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[Bug 103814] incorrect dust rendering in hl2ep1 without some R600_DEBUG options

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https://bugs.freedesktop.org/show_bug.cgi?id=103814

Hleb Valoshka <375gnu@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|incorrect dust rendering in |incorrect dust rendering in
                   |hl2ep1 with mesa 17.2 and   |hl2ep1 without some
                   |above                       |R600_DEBUG options

--- Comment #1 from Hleb Valoshka <375gnu@gmail.com> ---
Actually it's caused by *absence* of one or more R600_DEBUG options.
When I run the game with
R600_DEBUG=forcedma,hyperz,llvm,precompile,sisched,sbcl,sbsafemath I have good
rendering. Without it I have the described problem. I'll try to figure out
which option fixes rendering.

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[Bug 103814] incorrect dust rendering in hl2 without sisched

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https://bugs.freedesktop.org/show_bug.cgi?id=103814

Hleb Valoshka <375gnu@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|incorrect dust rendering in |incorrect dust rendering in
                   |hl2ep1 without some         |hl2 without sisched
                   |R600_DEBUG options          |
         QA Contact|dri-devel@lists.freedesktop |mesa-dev@lists.freedesktop.
                   |.org                        |org
           Assignee|dri-devel@lists.freedesktop |mesa-dev@lists.freedesktop.
                   |.org                        |org

--- Comment #2 from Hleb Valoshka <375gnu@gmail.com> ---
I've tested other HL2 titles (HL2, EP2, Lost Coast), they all have this issue.
But it can be workarounded by usage of sisched.

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