[Mesa-dev] [Bug 110603] Blocky and black opacity/alpha using RADV on some games

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110603

            Bug ID: 110603
           Summary: Blocky and black opacity/alpha using RADV on some
                    games
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: minor
          Priority: medium
         Component: Drivers/Vulkan/radeon
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: lucas.francesco93 at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 144153
  --> https://bugs.freedesktop.org/attachment.cgi?id=144153&action=edit
the bug itself on dota2 with vulkan enabled

I am experiencing a RADV bug with both arch and Gentoo linux, on LLVM7+ (cant
test on LLVM 6)


i can't reproduce it with  Ubuntu 18.10(strangely it works flawlessly there, i
didnt test with 19.10 but i can give it a go if its needed) on the same system
with the same hardware specs, i tried nuking Gentoo and installing arch to see
if the bug was a Gentoo specific one and it wasn't, i reinstalled Gentoo 2
times while testing it (with different use flags) and wasn't able to stop that
to happening

Already tried:
switching LLVM versions
switching to arch
changing compiler flags
changing around with the debug enable flag on mesa
downgrading glibc a bit
downgrading x-server
forcing the game to use wayland directly on SDL (in the case of artifact)


The games I can reproduce are mainly Source 2 ones, but i can reproduce it with
skyrim (dxvk dx11 version on proton) 

i'm putting it as minor severity as no one else that i asked that haves the
same gpu hardware besides me can reproduce the issue


System info:
https://gist.github.com/Uramekus/03308e0cdb776374d7cfa9ceb125bbe7

RenderDoc Capture (quite old at this point, i might make a new one tomorrow)

https://drive.google.com/file/d/1XZ8XMiA-j2eeZJU0vpfUeq85iQxsE67b/view?usp=sharing

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