unlit transparent and alpha control (c#)

Hi there !

i'm trying to control the alpha of a texture with an Unlit transparent Shader, problem is with unlit shader i can't access alpha variable using the color.a method (as there is no color). and mainTexture don't allow mainTexture.a.

is there another way to access alpha in a c# script ?

 

There is no color in that shader, it's based on it's texture image only.

 

yep i've realised that but as it's called Unlit transparent I thought there was a way to access the alpha value in the script in a similar way as the color featured Shaders (not color.a of course, but maybe something else, i tried to google it, but only found information about shader coding) so no way in script ?

in fact i'm looking for a shader that don't nearly react to lights and is always 100% self illuminated (similair to self illuminated or unlit) but with alpha variable, to use to simulate a screen display in a scene (and so even if the scene is dark and lot's of shadows come over my screen zone, the image remain luminous, maybe unlit isn't what I should use.

 

Well, I think you'll probably need to write your own shader.

 

ok, then i'll have more to do than i , but that's a good start for shader coding, as i've never really practiced it before.

 

Then you should try Transparent/Cutout/Soft Edge Unlit
If you disable cutoff, then you have texture and color in parameters to play with.

 

ok great ! thanks