Z-fighting bug

[vvs-]

There should be leaves on the wall in a big room with wolves and timed doors in Caves. Due to z-fighting there is a wall texture instead. This is almost the same as in corresponding OpenTomb bug (but it flickers there).

BTW in OT there used to be z-fighting problems in Lost Valley too. I didn't check it yet because it's hard to fight all those baddies there (T-Rex). Are there any means that could help to make Lara invincible or eliminate all enemies altogether? OT has excellent debugging aids for such tasks of which OL would benefit too.

[XProger]

you can use O key for DOZY mode in OL

[vvs-]

Thanks for the suggestion. I think there is the same bug in Lost Valley but to be sure I must complete those levels in original TR too which doesn't have such cheats.

Here is screenshot from original TR in Caves. To be fair there is z-fighting even there but it's not so obvious.

[vvs-]

Yes, there is the same z-fighting bug in Lost Valley and there is no sign of it in the original engine.

[XProger]

It's content problem, the original game doesn't use z-buffer, TombATI and Android/iOS ports has the same z-fighting bugs... so I don't know how I can fix it.

[Popov72]

Where is it exactly in the Lost Valley level? Can you give the camera coordinates?

Thanks.

[vvs-]

It's under the broken bridge to one of the cogs, near T-Rex.

[vvs-]

@XProger understood. But what if you give some textures more priority? That way wall and floor textures will only be rendered if there is no z-fighting there.

[XProger]

It'll be looking weird, because in bridge parts case they are really under ground level

[Popov72]

Using appropriate zbias should do it (PolygonOffset in openGL).

[vvs-]

Also, run-time patching could do wonders 😄