[shader request/help] Use alpha channel to bump specular

Unity Engine
1

Im new to unity, i tried to search on many places but did not find helpful or easy to understand informations… so this is my request:

I want to have a shader that uses a texture’s alpha channel to bump specular instead of transparent. From what i know alpha channel is only black and white, i wish to make black as non-reflective and white reflective, and between somewhat reflective depends on how dark it is

I would really appreciate help, either a simple link of a tutorial allows me to do the above or a magical code for the shader

Thanks in advance

2

if you are not using the Transparency Bump shader, the alpha of the Base texture is already for glossiness (specularity) with default Bumped Specular .
You can see that info from the material in the Inspector window : Base (RGB) Gloss (A)