Render canvas onto a render texture alpha problem

Unity Engine
1

I want to render a canvas onto a render texture but I’m having problems with the alpha values.

If I have a fully opaque panel containing a semi transparent panel, the area where the overlap occurs is semi transparent, even though the bottom panel is fully opaque.

Through my research, I’ve discovered it might be an issue with Unity’s default shader using ColorMask RGB (link).

Anyone has a solution to this problem?

2

@mtartist have you tried setting the material of the panel to UI>lit>transparent?

3

@enhawk why lit? I don’t have any lighting.

4

@mtartist try unlit then?

5

Still having the same problem. Alpha is overwritten instead of blended.

6

can you share a picture of the effect?