New subject: [Bug 56671] Disney Ratatouille demo renders upside down on Intel graphics

14 May 2024


      https://bugs.winehq.org/show_bug.cgi?id=56671
Bug ID: 56671
           Summary: Disney Ratatouille demo renders upside down on Intel
                    graphics
           Product: Wine
           Version: 9.8
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: d3d
          Assignee: wine-bugs@winehq.org
          Reporter: alexhenrie24@gmail.com
      Distribution: ---
Created attachment 76455
  --> https://bugs.winehq.org/attachment.cgi?id=76455
Screenshot of the main menu
A recent regression is causing the Disney Ratatouille demo to render upside
down on my laptop that has an Intel i7-1360P processor and integrated graphics.
Interestingly, the game renders right-side-up on my desktop that has an AMD
Radeon RX 5500 XT. Both the laptop and the desktop have Arch Linux.
Steps to reproduce:
1. Create an empty directory and download EN_Ratatouille_Demo.exe into it.
2. Run `wine EN_Ratatouille_Demo.exe` to extract the installer.
3. Run `wine setup.exe` to install the Ratatouille demo.
4. Run `cd "$HOME/.wine/drive_c/Program Files
(x86)/THQ/Disney-Pixar/Ratatouille Demo/Rat"` to enter the game directory.
5. Run `wine GameSetup.exe` to start the game launcher.
6. Click Play.
Observe that everything is upside down, from the intro videos to the main menu.
`git bisect` says:
ba2f78922f84f0576694fef17be7bec2cc9da19b is the first bad commit
commit ba2f78922f84f0576694fef17be7bec2cc9da19b
Author:     Elizabeth Figura zfigura@codeweavers.com
AuthorDate: Fri Mar 15 18:59:35 2024 -0500
Commit:     Alexandre Julliard julliard@winehq.org
CommitDate: Sun May 12 16:25:54 2024 +0200
wined3d: Remove no longer used support for drawing to an onscreen render
target.
Now that we require ORM_FBO, wined3d backbuffers are always offscreen (and
we
    never draw directly to the frontbuffer, which is the only truly onscreen
    surface).
We could reintroduce support for drawing directly to the backbuffer, and
this
    would presumably improve performance by avoiding a blit from the wined3d
    backbuffer to the real GL backbuffer.
However, this is not always possible or performant due to mismatching
    dimensions, or the need to use a depth buffer which is also used with
offscreen
    RTVs, and for d3d1-9 it may not be possible at all due to issues related to
    preserving invariance between flipped and non-flipped geometry.
It *may* be possible to identify situations where we can render directly to
the
    backbuffer for d3d10+, but at that point we can rely on the Vulkan backend
to
    work, and given other unfixable performance problems with the GL backend
(most
    notably the inability to properly stream index buffer data) it does not
really
    make much sense to go out of our way to perform such a minor optimization
there.
dlls/wined3d/adapter_gl.c         |   1 -
 dlls/wined3d/arb_program_shader.c |   4 ++--
 dlls/wined3d/context_gl.c         | 101
++++++++++++++++++++++++++++++-----------------------------------------------------------------------
 dlls/wined3d/ffp_gl.c             |  95
++++++++++++++++++++++-------------------------------------------------------------------------
 dlls/wined3d/glsl_shader.c        |   4 ++--
 dlls/wined3d/shader.c             |   4 ++--
 dlls/wined3d/utils.c              |   2 +-
 dlls/wined3d/wined3d_private.h    |  10 +---------
 8 files changed, 60 insertions(+), 161 deletions(-)
$ sha256sum EN_Ratatouille_Demo.exe
b8fcd1385ef47883987df0ae3c05b2acbd83f70bede43bcf8567e6a7aa2629c0
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[Bug 56671] New: Disney Ratatouille demo renders upside down on Intel graphics