Vertex cache optimization

classic Classic list List threaded Threaded
5 messages Options
Reply | Threaded
Open this post in threaded view
|

Vertex cache optimization

Itun
I have written well-known Forsyth algorithm for post vertex cache optimization, ACMR of my mesh have changed form 2.0 to 0.67, but FPS and time for model rendering didn`t change. What can it be?
Reply | Threaded
Open this post in threaded view
|

Re: Vertex cache optimization

Michael Bien
maybe vertexcount wasn't the bottleneck?

On 10/14/2010 05:25 PM, Itun [via jogamp] wrote:
I have written well-known Forthys algorithm for post vertex cache optimization, ACMR of my mesh have changed form 2.0 to 0.67, but FPS and time for model rendering didn`t change. What can it be?


View message @ http://jogamp.762907.n3.nabble.com/Vertex-cache-optimization-tp1701812p1701812.html
To start a new topic under jogamp, email [hidden email]
To unsubscribe from jogamp, click here.


-- 
http://michael-bien.com/
Reply | Threaded
Open this post in threaded view
|

Re: Vertex cache optimization

Itun
In reply to this post by Itun
I have two meshes (one index buffer and one vertex buffer for each mesh). Before rendering I optimize them. Then in each frame I have a loop with two iterations in which there is glDrawElements call. I don`t have materials, textures and others. My scene is very simple. Increase of render time must be.
I experimenе this application on three machines with different hardware levels and hardware manufacturers and with different operation systems.
Reply | Threaded
Open this post in threaded view
|

Re: Vertex cache optimization

Wade Walker
Administrator
If you have an NVIDIA graphics card, you could profile your application with GLExpert (http://developer.nvidia.com/object/glexpert_home.html). It should help you figure out what the bottlenecks are.
Reply | Threaded
Open this post in threaded view
|

Re: Vertex cache optimization

Itun
Thanck you! I have not yet installed, but I like the beginning. As soon as the look, I will write.