no good additive shader in URP for particles?

Hello, in URP, i'm using the Shader URP/Particles/Unlit in 2109.3.1f1

No matter what my combination of Blending Mode and Color Mode settings, I'm unable to get a simple particle effect to do proper additive with a texture....

I'm using URP/Particles/Unlit

Blending Mode Additive, i'm finally getting the 'stacking' effect, but it wont show textures.....

https://ibb.co/kQrHbYJ

Is anyone else seeing this in URP? Any help greatly appreciated!

thanks!

 

The default shaders that URP provides only allows normal blending. I discovered this upon inspection of the ShaderGUI source codes. No matter what setting you amend on the inspector. It always sets "Blend SrcAlpha OneMinusSrcAlpha" for the blend mode in the shader. What the "additive" blend meant was pre-multiply additive which is a different additive effect from the additive that was done in the default pipeline shaders.

 

Transparent unlit shader from builtin pipeline will work without any problem, you can safely use them if you are not able to achieve the effect you want with the shader urp provided

Besides, I have no problem with setting Blend mode to additive and Color mode to multiply to get the right additive effect in particle system

 

I have a similar problem which I have described in the forum post Fragment shader output's alpha value is ignored when using the URP. Why?. Can this be related to the blend modes? Or could it maybe be related to the frame buffer format (because changes to the alpha value do not have any effect)? @jsunandmax have you been able to make any progress?

 

We also need this.

 

What happens when using the legacy additives?

 

Do you mean legacy shaders that do additive blending? Legacy shaders don't work with the URP, as far as I understand.

 

^ Some legacy shaders do, for example additive particles from Unity 4. Anything using surface shader don't.

If you want to make shaders with blend control and keep your sanity you buy Amplify Shader Editor.