How to create empty normal map?

I want to create an empty normal map , how do i do it ? The reason is because i want to paint multiple other normal map into the empty normal map .

I don't really understand how normal map works so i don't have any idea on how to create empty normal map.

Head over to the Texture Paint workspace, click the little plus sign + in the Draw properties on the right side (Properties Editor) and select Normal:

This way the new normal map also gets connected to the shader, automatically. The suggested RGB values are 0.5, 0.5, 1.0, 1.0 or #8080FF.

• ah thats why i didnt found it because i'm using blender 2.79, blender 2.8x and newer have different ui , i will try to find it on this blender version Jul 18, 2021 at 15:58
• um im sorry but can you help me ? i'm using blender 2.79 and i cant find it anywhere , maybe this is a new feature on 2.8 or newer ? Jul 18, 2021 at 16:06
• @user6668201 I don't have access to 2.79 anymore. I guess this was introduced as of 2.8x Jul 18, 2021 at 16:08
• Tried to download 2.79 but I can't get it to work properly (high dpi display) @user6668201 If I have access to it, I'll update my answer. Jul 18, 2021 at 16:20
• ah its okay , i'm not in any way forcing you to answer , i still can just wait for other people and use my method in the meanwhile Jul 18, 2021 at 16:24

Nevermind i found the answer
https://gamedev.stackexchange.com/questions/31557/why-arent-tangent-space-normal-maps-completely-blue
Turns out normal map default color is RGB(128,128,255) , but blender is using 0-1 scale for rgb so converting from scale 0-255 produce some decimal inaccuracy , instead use the hex value for RGB(128,128,255) which is #8080FF

All i need to do is to put the default color value to the color when creating new image

• There is an built-in way: Head over to the texture paint workspace, click the little plus sign in the draw properties on the right side and select "Normal". Jul 18, 2021 at 15:50
• oh really ? can you just answer it instead of in this comment ? if there is really built in way to do it then it is a better method since there is no inaccuracy due to conversion Jul 18, 2021 at 15:52
• you can use Hex instead of RGB and enter 8080FF Jul 18, 2021 at 16:24
• AH YOU RIGHT !!!!!! i searched on RGB to hex converter on web search that accept 0-255 scale , and it gives me precise hex value for it , thanks !!!!! Jul 18, 2021 at 16:26
• i have edited my answer to change it from using rgb to hex , no more decimal inaccuracy , thankss Jul 18, 2021 at 16:29