Hi,
I have a particle system in my scene with a particles->alpha blended shader.
If camera has hdr OFF, the render is just fine, if it’s ON, the colors of the particles are all wrong.
Here is a screen from the scene (rendered right) : 
And here is a screen from the game camera (with HDR, messed up colors) : 
I’d rather have the HDR option and render alpha blended particles correctly. Is this possible ?
punk
2
I just had this problem also, I fixed it by editing the shader and after this line
fixed4 col = 2.0f * i.color * _TintColor * tex2D(_MainTex, i.texcoord);
I added
col = clamp(col, 0 ,1);
something to do with the col values wrapping into negatives
Taz