Hi, I'm running HL2: Ep2 in Win98 SE. System config is: 775i65G motherboard, 512 MB RAM (dual channel 256+256), ATI X850 Pro VIVO.

A second config I tried is: exactly the same as the first config, except X850 Pro replaced by GeForce FX5200.

In the second config (FX5200), the game textures all look as expected - no artifacts or anything, all good. But in the main config (X850 Pro), many of the textures are pitch black. Like this:

Other maybe useful info: The above behavior is with DirectX 9 rendering mode (mat_dxlevel = 90). When I change mat_dxlevel to 81 (i.e. DirectX 8.1 rendering mode) with X850 Pro, the textures start displaying correctly. But with FX5200, in both dxlevel 80 or 90, the textures seem normal.

Anyone has any idea what's going on or why this happens? It's surprising because FX5200 is a much weaker card than X850, and yet it displays the textures correctly.