btDbvt and Rendering

[projectileman]

Hi.
How is btDbvt class used for rendering and filtering non-visible objects ?
Specially in the culling and occlusion queries?
Is there any clue on the collideOCL() method? how it sorts the primitives front-to-back?

thanks.

[Erwin Coumans]

View frustum culling uses the dynamic AABB tree against the frustum volume.

Occlusion culling is done using ray casting, accelerated by the dynamic AABB tree. It fires a ray for each pixel in the occlusion map and records the first hit object.

The Extras\CDTestFramework demo has a toggle to visualize the occlusion map, when using btDbvtBroadphase.
Hope this helps,
Erwin

[projectileman]

Thanks Erwin for your quick responce. I couldn't found it by myself.... so thanks.