Opengl ES Point Sprites

[Splatics]

I have an explosion particle effect using point sprites in my 3D game and also 3D models all over in it. My problem is that when I draw my point sprites if I have depth testing turned on then my point sprites cover each other up when they are drawn, but if I have the depth test turned off then the particle effect looks great and blending works great but every particle effect is rendered in front of all objects in the scene no matter if the the objects are completely covering it or not.
Does anyone know how to render the point sprites with depth testing so that if an object is in front of the point sprites then you wont be able to see it?
Please let me know if this needs better explaining. Thanks!

[headkaze]

You need to sort your sprites by their Z position and render them in that order.

[warmi]

Originally Posted by Splatics

I have an explosion particle effect using point sprites in my 3D game and also 3D models all over in it. My problem is that when I draw my point sprites if I have depth testing turned on then my point sprites cover each other up when they are drawn, but if I have the depth test turned off then the particle effect looks great and blending works great but every particle effect is rendered in front of all objects in the scene no matter if the the objects are completely covering it or not.
Does anyone know how to render the point sprites with depth testing so that if an object is in front of the point sprites then you wont be able to see it?
Please let me know if this needs better explaining. Thanks!

For your particles you should use depth testing but disable depth writing so that they are properly occluded by non-particle objects while not occluding each other.

[headkaze]

Originally Posted by warmi

For your particles you should use depth testing but disable depth writing so that they are properly occluded by non-particle objects while not occluding each other.

That's interesting.. how do you turn off depth writing?

[warmi]

Originally Posted by headkaze

That's interesting.. how do you turn off depth writing?

glDepthMask

[Splatics]

Originally Posted by warmi

glDepthMask

Awesome! Thanks, this worked!