Application crashes when I try abrupt change camera position

[pit]

We have a big terrain (4 km x 8 km). Sometimes (it is very difficult to reproduce this bug), when we we try to throw camera from a corner of the terrain to it's center application crashes. When I managed to catch it under Visual Studio I found out the following.

 

Terrain.cpp (lines 1759-1764, void TerrainCoarse::culling(TerrainCulling &c,const vec3 &camera,float visible_distance,const BoundFrustum &bf) )

childs[order[0]]->culling(c,camera,visible_distance,bf);
childs[order[1]]->culling(c,camera,visible_distance,bf);
if(childs[order[2]]) {
childs[order[2]]->culling(c,camera,visible_distance,bf);
childs[order[3]]->culling(c,camera,visible_distance,bf);
}

 

Terrain.cpp (lines 1805-1810, void TerrainCoarse::culling(TerrainCulling &c,const vec3 &camera,float visible_distance,const BoundFrustum &bf,const Occluder &o) )

childs[order[0]]->culling(c,camera,visible_distance,bf,o);
childs[order[1]]->culling(c,camera,visible_distance,bf,o);
if(childs[order[2]]) {
childs[order[2]]->culling(c,camera,visible_distance,bf,o);
childs[order[3]]->culling(c,camera,visible_distance,bf,o);
}

 

childs[order[0]], childs[order[1]] and childs[order[3]] can be null. I don't know what is the reason. My quick and dirty fix was to change code to something like:

if (childs[order[0]]) childs[order[0]]->culling(c,camera,visible_distance,bf);
if (childs[order[1]]) childs[order[1]]->culling(c,camera,visible_distance,bf);
if (childs[order[2]]) childs[order[2]]->culling(c,camera,visible_distance,bf);
if (childs[order[3]]) childs[order[3]]->culling(c,camera,visible_distance,bf);

[serega]

Hello, pit!

Could you please send us scene with your big terrain for test?

[pit]

Could you please send us scene with your big terrain for test?

 

Hello, Sergey!

 

I fear that it is realy too big: approximately 900 Mb on hard disk (only terrain).