[Scummvm-tracker] [ScummVM :: Bugs] #15531: GRIM: Manny completely black in first demo room on MacBook Air M1 (OpenGL renderer)

[ScummVM :: Bugs]

#15531: GRIM: Manny completely black in first demo room on MacBook Air M1 (OpenGL
renderer)
--------------------------+--------------------------
Reporter:  dwatteau       |      Owner:  (none)
    Type:  defect         |     Status:  new
Priority:  normal         |  Component:  Engine: Grim
 Version:                 |   Keywords:
    Game:  Grim Fandango  |
--------------------------+--------------------------
 This happens with a 2.9.0pre11049-ge02909cd12f (Nov 26 2024 20:07:10)
 daily build, on macOS Sonoma 14.7.1 on Apple MacBook Air M1.

 It also happens with ScummVM 2.5.1 on the same device, so it's probably
 not a recent regression.

 When starting the `grim-demo-win` demo on that device, Manny is just plain
 black, in the first room underground, when using the default OpenGL
 renderer. He's then OK again when getting out of that room with the
 elevator (but becomes fully black again if I go back to that room).

 Here are the results when I change the renderer:

 * OpenGL: KO, Manny fully black in that room (see screenshot1)
 * OpenGL with shaders: OK
 * TinyGL: OK, but Manny has a bit of flickering (or whatever is called)
 going on (see screenshot2)

 OS and ScummVM release information:

 {{{
 $ sw_vers ; arch
 ProductName:            macOS
 ProductVersion:         14.7.1
 BuildVersion:           23H222
 arm64

 $ ./scummvm -v
 ScummVM 2.9.0pre11049-ge02909cd12f (Nov 26 2024 20:07:10)
 Using SDL backend with SDL 2.30.8
 Features compiled in: Vorbis FLAC MP3 TiMidity RGB zLib MPEG2 FluidSynth
 MikMod Theora VPX AAC A/52 FreeType2 FriBiDi JPEG PNG GIF taskbar TTS
 cloud (servers, local) ENet SDL2 TinyGL OpenGL (with shaders) OpenGL
 desktop only RetroWave
 }}}

 Full `-d6` OpenGL output below, with config file as well.
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/15531>
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