Irrlicht Engine

I had similar experience when exporting material file with obj meshes,
try delete them and see if framerate gets better.

Noticed that even addEmptySceneNode push the fps down.. how come if they are not even visible?

a simple test
Initial 475 fps
1000 addEmptySceneNode, fps = 345
1000 addCubeSceneNode, fps = 147

thanks for useful comments!
Yea, post took off into screenspace:)
So far I noticed RTT did drop my framerate, changed it to 512 from 1024 and things got alot better,
actual resolution on screen is about 750px if im running in 1920width resolution, so 512 bit to low... but then again, it looks quite ...

Hi all
When building applications Im wondering what exactly has a hit on performance.
Trying to figure out where I should focus on optimizing.

I notice my geometry, animated geometry, textures and gui takes most of the impact on fps,
but what about the other stuff I have in the loop like alot of ...

My opinion, after using 3dsmax for many years, I finally switched to blender and never looked back.
Things are bit different but all together it is just as powerful tool to use, and once you get used to the gui and workflow it feels better than working in 3dsmax.
And its free:)

krom

Try investigate the model and its normals in blender editmode
try recalculate normals and also in object mode apply scale.
x format export in 2.5 is working:)

Krom

After trying to use the 3ds format some time ago i just concluded to not use it anymore, It sucks!
I dont think it support sharing of vertices/smoothing groups, witch basically made it slower in realtime than other better formats.
My advice is import it into blender and convert to ply, or obj.

k

My approach that I have tested with blender and irrlicht is this:
-model your character in blender
-set up and add armature(bones)
-animate armature (walkcycles, runcycles and so on)
-export to .x format
-in Irrlicht specify frameloop and speed to be played.

this is a good tutorial to understand ...

Probably because OctreeSceneNode is limited by 16bit index..
guess only option is to split the mesh into smaller meshes below 65k triangles, then add them to IMetaTriangleSelector.

k

I would suggest to convert your model to ply format, It will enable you to load huge meshes.
if you want to keep the stl format you have to split it up into smaller pieces.

k

Hi all
would it be possible to write an expression into a editbox and then pass it to a variable?.
something like 2+5*2 or valueA*3 or acin(valueA*3) and then grab the result..

krom

HI, Is there a 16bit indice limit in OctreeTriangleSelector?, i seem to get weird collision result when doing triangle picking on a highpoly mesh.
Its working on objects < 64k trianglecount. Is it a way to get around this?
Using ply format and metaSelector.

Thanx
k

After bit of investigation I found that setting "set solid" in blender only does the same as stl
and 3ds format, ending up with nonshared vertices = lots of vertices compared to triangles in the
mesh and drop in fps performance and larger files to load...
Is shared vertices and triangle smoothing ...

thanks alot Virion! blender set solid did the trick.
blender saves the day:)

K

Thanks for reply!
well, Gouraud shading false is the closest I get but it does not look good at all..
the specularity of the triangels looks messed up, even triangels that is planar to each other looks different.
the mesh that is loaded is in perfect condition, there is no coplanar overlap stuff ...