Bug 109401 - [DXVK] Project Cars rendering problems
Summary: [DXVK] Project Cars rendering problems
Status: NEW
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/Vulkan/radeon (show other bugs)
Version: git
Hardware: Other All
: medium normal
Assignee: mesa-dev
QA Contact: mesa-dev
Depends on:
Reported: 2019-01-20 15:44 UTC by Gregor Münch
Modified: 2019-02-13 22:00 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Broken Trees (1.84 MB, image/png)
2019-01-20 15:44 UTC, Gregor Münch
broken reflections (1.78 MB, image/png)
2019-01-20 15:45 UTC, Gregor Münch
hack for the trees issue (582 bytes, patch)
2019-02-11 11:51 UTC, Samuel Pitoiset
Details | Splinter Review
MSAA+FXAA (394.42 KB, image/jpeg)
2019-02-11 18:50 UTC, Gregor Münch

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Description Gregor Münch 2019-01-20 15:44:38 UTC
Created attachment 143171 [details]
Broken Trees

There are two problems:

1. Trees are rendered incorrectly on Azure Coast

2. Reflections on some cars look strange. Like there are some random colored pixels.

Extended renderer info (GLX_MESA_query_renderer):
    Vendor: X.Org (0x1002)
    Device: AMD Radeon HD 7900 Series (TAHITI, DRM 3.27.0, 4.20.0-2-amd-staging-drm-next-git, LLVM 8.0.0) (0x6798)
    Version: 19.0.0
    Accelerated: yes
    Video memory: 3072MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.5
    Max compat profile version: 4.5
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL renderer string: AMD Radeon HD 7900 Series (TAHITI, DRM 3.27.0, 4.20.0-2-amd-staging-drm-next-git, LLVM 8.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.0.0-devel (git-acdad24585)
Comment 1 Gregor Münch 2019-01-20 15:45:23 UTC
Created attachment 143172 [details]
broken reflections
Comment 2 Samuel Pitoiset 2019-02-11 11:51:43 UTC
Created attachment 143358 [details] [review]
hack for the trees issue

Does the attached diff also fix the trees issue on your side?
For some reasons, this optimization doesn't work correctly with that game.
Comment 3 Gregor Münch 2019-02-11 18:50:48 UTC
Created attachment 143361 [details]

Your patch works also for me.

BTW those bad reflections do only occur with MSAA. By also enabling FXAA makes it even more visible.
Comment 4 Samuel Pitoiset 2019-02-13 22:00:21 UTC
The trees issue should be fixed with https://cgit.freedesktop.org/mesa/mesa/commit/?id=334da034d8d91ca5a0a1bff8deaefd8ca762c42e

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