PocketMatrix

I have a Pocket PC phone with NVIDIA GoForce 5500 GPU. I have installed the Animate3D demo but I have a question.

I have installed the install_powervr.ARMPPC2005.CAB and install_rasteroid.ARMPPC2003.CAB and both of them run ok, but a bit slow.

Then, I have installed install.ARMPPC2005.CAB and it runs very well.

What's the different between these examples?

I suppose using powerVR and rasteroid, they use OpenGL ES. And the other is with the internal render of Edege. Isn't it?

But how can be so slowly with rasteroid or powerVR and runs ok with the other?

Hi Meiline,

The PowerVR sample should only be able to run if it can find PowerVR hardware (which is odd, because the GoForce doesn't seem like it could have PowerVR hardware). If the hardware isn't present, it should give an error like: 'can't find animate3d or one of its components'.

The Rasteroid sample uses software rendering and may run slower than the EDGELIB internal renderer because it uses a depth buffer, while the internal renderer only use polygon sorting. The advantage to polygon sorting is that it's faster, but the disadvantage is that it can have sorting bugs while rendering (because it doesn't know which polygon is closer to the screen in some cases).

The PowerVR sample should run fast on your device. Maybe you can try to remove it from the Cradle, or disconnect USB cables. We've noticed some slowdown while using PowerVR on our Dell Axim x50v Pocket PC while in the cradle.

Hi Edge,

Thanks for your answer.

So I think that I don't have anything to do if I want to use the depth buffer in my code. It is slower than the EDGELIB internal render.

Thanks again.

Meiline.