(Android) Octree slower than addMeshSceneNode..

[dark chazz]

This has always bugged me...
Why is it running slower even though it's rendering less ?!

addMeshSceneNode gives me a constant 60fps while octree gives 45-55fps
I'm using a Galaxy S2 which is the top phone hardware-wise at the moment, others are getting 30-40fps average with addMeshSceneNode in the same map I'm using.

Any thoughts on this ??

[Lonesome Ducky]

The overhead of an octtree will make it slower than a normal mesh node if the mesh you're using it on isn't complex. How complex is your mesh?

[dark chazz]

The overhead of an octtree will make it slower than a normal mesh node if the mesh you're using it on isn't complex. How complex is your mesh?

Polygons: 11167
Vertices: 33501
Primitives: 44

[devsh]

you should really have about 64kb of vertex data per draw call, so that works out to (pos,tcoord,normal,color = (4+2+3+1)*4=36)*3=108 or so bytes per triangle. This means about 606 triangles, so your mesh should have no less than 512 triangles in your octree node (actually on PC I recommend 2048).

[hybrid]

setting the hardware mapping hint (i.e. using hardware buffers) should in most situations, also on mobiles, give a better performance than octree. Moreover, octree is trading cpu time for gpu bandwidth. On mobiles, cpu time is also very limited.

[dark chazz]

you should really have about 64kb of vertex data per draw call, so that works out to (pos,tcoord,normal,color = (4+2+3+1)*4=36)*3=108 or so bytes per triangle. This means about 606 triangles, so your mesh should have no less than 512 triangles in your octree node (actually on PC I recommend 2048).

ehh sorry I posted this in the beginners forum, but I think I know what you mean.

setting the hardware mapping hint (i.e. using hardware buffers) should in most situations, also on mobiles, give a better performance than octree. Moreover, octree is trading cpu time for gpu bandwidth. On mobiles, cpu time is also very limited.

You mean (scene::EHM_STATIC) ?
Ya I'm using that it's probably why the frame rate is better than octree.