Emulator

What steps will reproduce the problem?

1. Load game...
2. Look for an area where there should be a patch of grass.

What is the expected output? What do you see instead?
Expected: Grass should be visible. Rupees hidden in grass should not be visible.
Observed: Grass is invisible. Rupees that should be hidden in grass are clearly visible and appear to be sitting on the ground. If you run through the invisible grass, you can still see blades of grass being kicked up and hear the rustling sound.

Dolphin version with the problem? Other Dolphin version without the
problem?
Using "Dolphin SVN revision 4771"
Downloaded 6/12/2010 from Dolphin official homepage.
First time I've tried to emulate this game, so I don't know if there is a version that doesn't exhibit this problem.

32-bit or 64-bit and any other build parameters?
64-bit, don't know if this affects 32-bit version.

OS version and versions of tools/libraries used?
Windows 7 Ultimate 64-bit. Latest NVIDIA drivers for GTX 280 GPU.

Please provide any additional information below.
Grass is invisible. Doesn't matter whether I'm using D3D or OpenGL. I've experimented with many settings and haven't seen any change in this.