I have a particle effect, using GPU sprites, which uses a material that in turn includes a texture to render. So that particle effect spawns particles showing that texture. This in general works fine: the particles are lying on the ground for a while and then slowly fade away (via the color alpha value).
Now the issue is that when I move (not rotate) the camera around, then the particles on the ground seem to rotate with the camera, always facing it.
I know there is this option “Screen Alignment” for each particle emitter. I tried each alternative here, and those indeed have some effect on how the particle material rotates/faces (with) the camera. However, regardless of the selected option, there is always at least some rotation visible when the camera moves.
Now what I want is that the particles do not change their rotation or orientation at all after they have hit the ground and stopped moving. They should stay exactly where they are, sticking to their orientation, regardless of any camera movement.
Is there a way to achieve that?