I have an odd problem. I'm playing Metal Gear Solid on ePSXe, everything is fine, but as soon as I go underwater, huge black stripes appear onscreen and I just can't see anything. What's wrong?

Plugin: Pete's OpenGL Driver 1.1.76
Author: Pete Bernert
Card vendor: NVIDIA Corporation
GFX card: GeForce 7600 GS/PCI/SSE2

Resolution/Color:
- 1280x1024 Fullscreen - NO desktop changing [32 Bit]
- Keep psx aspect ratio: off

Textures:
- Default
- Filtering: 0
- Hi-Res textures: 0
- VRam size: 0 MBytes

Framerate:
- FPS limitation: on
- Frame skipping: off
- FPS limit: 60.0

Compatibility:
- Offscreen drawing: 3
- Framebuffer texture: 1
- Framebuffer access: 4
- Alpha multipass: on
- Mask bit: on
- Advanced blending: on

Misc:
- Scanlines: off
- Line mode: off
- Unfiltered FB: off
- 15 bit FB: off
- Dithering: off
- Screen smoothing: off
- Screen cushion: off
- Game fixes: off [00000002]