IL-2 and OpenGL

[EJGr.Ost_Caspar]

Regarding water... from readme patch 4.04m:

Graphics:

Reworked water render

To see the updated water render please modify the Water section in the file conf.ini in the [Render_OpenGL] section.

Water = 0 or 1 – No changes in version 4.03.
Water = 2 – This mode is visually similar to water = 3 but it runs on ATI cards 9800, X800, X1800 and later models.
Water = 3 – Fast render mode with Vertex Shaders 3.0 (NVIDIA 6600 and later models)
Water = 4 – Better quality mode with Vertex Shaders 3.0 (NVIDIA 6800 and later models)
Reminder:
ATI supports modes: 0, 1, 2
NVIDIA 6600 and later models support: 0, 1, 2, 3, 4
NVIDIA cards before the series 6xxx support 0, 1, 2 (2 is not recommended)

I don't think, anything has changed since then.