L3DT Users' Community

Hi All,

I just noticed a bug in Sapphire that causes it to cull (not show) terrain tiles that should be visible (see below):



This seems to only affect maps with very small horizontal scales (e.g. 0.1m/pixel terrain). I've not yet fixed the bug, but I have added an option to the Sapphire menu to turn off frustum culling ('Options->Frustrum culling'). So, if you find that some tiles are not visible, turn off frustrum culling.

I'll post here when I've fixed the bug properly.

Cheerio,
Aaron.

Hi All,

Hmmm...I've partially fixed this for release 2.5b. Some problems may persist on step terrain with very small horizontal scales. I'll put a proper fix on the to-do list for v2.6.

Cheerio,
Aaron.

Out of curiosity, what is the bug causing this? I noticed it on a mountainous area where horz scale is about 4.6 by the way.

Hi Rummy,

I'm not really sure. I've made a mistake somewhere in the maths where Sapphire calculates whether a tile is visible before drawing it. It's just a few vector operations (subtract, dot product, etc.), which shouldn't be too hard. Anyway, since I haven't found the bug yet, I've just upped the clipping threshold so it should be less problematic.

Cheerio,
Aaron.