ok, i have just one pixel, (for example), what is the math or algorithm operation to obtain the normal map (normal pixel) without consider that the original image it is a height map or regular map?
i know that RGB(127, 127 ,127) or RGB(0.5,0.5,0.5) means the GRAY color so this type of color (after applying that color to a regular map) gives no results???
I... I have no words to express myself more clearly.
You don't seem to understand the concept of a normal map.
I explained to you how to turn a height map into a normal map in detail in the last post.
I explained to you how it's not possible to turn an ordinary diffuse map image into a normal map without some very advanced bleeding edge image recognition and processing technology (which does not yet exist to my knowledge).
That's all there is.
You can't fetch a normal from a single pixel which is not storing a normal value, regardless of whether it's a diffuse or height map. A random color has no inherent normal quality to it.
It's like I told you the answer to a particular question is 42. Now, give me the one single equation that yielded that answer. You should be able to extract that information from the bits encoding those characters, "42" right? No.
You're using some kind of bizarre digital homeopathy logic here. Bits only store the information they store, you can't extract additional magical information they've never had from them.
Just...
It's time to go back to the drawing board; here's a good place to start learning the basics:
