Emulator

Game Name?
Peach's Castle

Game ID?
00

What's the problem? Describe what went wrong in few words.
The cave portion of the demo seems to render without global illumination, so it's much darker than it should be.

What steps will reproduce the problem?
[Don't assume we have ever played the game and know any level names. Be as
specific as possible.]

1. Press start to access the pause menu
2. Select "Return -MAIN MENU
3. Select one of the stage select options
4. Select "CAVE"
5. Observe dark rendering

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?
4.0-5923

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Unknown

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
Windows 7, Intel Core i7-960, nVidia GeForce 580

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
https://wiki.dolphin-emu.org/index.php?title=File:Peach%27s_Castle-Cave_Lights.jpg
https://wiki.dolphin-emu.org/index.php?title=File:Peach%27s_Castle-Cave_Lights_on_GameCube.jpg
https://www.youtube.com/watch?v=jE85lOieDnw