How to make material rectangle or native size

Hi, I’ve been scratching my head for a day now. I created a material shader is Mobile/particles/additive and use the material in my particle system. However the texture I used on the material is rectangle in size. But when the particle comes out it is perfectly square. So how do I set it to native size?

Thanks,

If you want to avoid using meshes, you can set the size of the particle in the particle system here:
83888-particlestartsize.png

If you need it to be bigger than the usual you might want to change those settings here too:
83889-rendererparticlesize.png

Textures are distorted to match the aspect ratio of the particle mesh, not the other way around. If you want rectangular particles, assign a rectangular mesh to the emitter.

Hi I forgot to mention that I’m in 2d and noob :smiley: so how do i make a rectangular mesh in 2d thanks!