I discovered another issue on Particle3DSample and Camera in my project. I hope anyone can please give me some advices.
I notice that when the Camera zooms in, to look at the particle nearer, the particle seems to be scattered and the sprite becomes smaller. When the Camera is moved further away from the particles, the particles starts to become bigger, and brighter. I re-tested on the original xml particle source code. XML particle sample does not have my problem.
Initially, I am suspecting it is some screen space distance that particleEffect.fx is calculating, but cannot really understand where and why is the problem? But now, I am really confused where and what is causing the texture sprite to render smaller when Camera is near to the particles.
I continue to test the problem, in my project, particleSystem.as is not inherited from DrawableGameComponent, but I have tested in the original xml sample to confirm it is not the DrawableGameComponent.
Hope anyone can give me some advices where am I wrong.
Thanks in advance