Using GIMP for Bump and Normal Map Creation

in this video i'm going to introduce you how to create your normal and bump maps using the image editing software now when i began what i did was i made a folder and i just called it and since i'm utilizing this in relationship to the unreal 4 engine called a ue4 i went out to pixabay.com again pixabay has photos illustrations vectors etc they're all as far as free art etc so i use that to just find a stone wall base graphic here so this is going to be my baseline as far as building out the normal and bump maps so what i'm going to do is i'm going to right click or you could do a file open if you already have open but i'm going to go ahead and open up all right so one thing to point out is whenever i saved this file it might be a little hard to see here but i just gave it a descriptive name underscore base normally whenever i am creating things such as the normal and the bump maps i'll do the name of whatever the image is underscore based normal and bump now to begin you are going to want to be working under the filters drop down however your normal and your bump map elements are not actually located in the same spots here for example under filters if you go to generic this is where the normal map is located so if you click on normal map you're going to get a pop-up window where you can go through and change the scale and you can change the mode as far as your tileable things like that you can change opacity again from an introductory standpoint and just to get you up and running as far as getting a normal and a bump made i'm going to go ahead and say ok now be careful whenever you do this though because the next step is going to be coming up to the file drop down menu to save or export your newly created map here now one thing that likes to do is right above the export as button there is actually overwrite the current file you want to just be really careful keep an eye out make sure you're hovering over export as and what i'm going to do here is i'm going to just come up to the name here i'll keep it as a jpeg jpegs can be imported into unreal unity etc and i'm just going to change this to normal and i'm going to tell it export quality is fine for me i mean if you really wanted to you could crank it up to 100 i'm just going to export and now what i'm going to do here is i'm actually going to edit and we're going to undo the normal map this is a kind of a quick workflow thing whereby if you know you've already just made the normal map i now we can just dive in and make the bump so what i'm going to actually do here though is making a bump map is a little bit different you're going to have to make a layer set it to a grayscale and then actually apply the graphic to act as the bump so to do this your layer location in is over on the right hand side here if you've used photoshop before should look very similar here all the way at the bottom here it looks like a little plus symbol with a piece of paper i'm going to go ahead and create a new layer and i will call this map say okay i'm going to make sure it's in front of my base file and then one thing you may need to do is you may need to come over as far as your foreground and background colors here on the left hand side where your toolbox is you may have to double click and actually change as far as the grayscale i'm going to go ahead and say okay and then coming back over double check to make sure under the layers that in my case bump map is highlighted you can tell because it's got the darker bar highlighting it there and i'm going to go under edit and i'm going to say fill with fg or foreground color okay so i've got kind of a gray scale going on here the next step now is to go back into filters now if you remember for the normal we went under generic however for a map we actually want to go to map and then bump map now the bump map here you're going to have some options but specifically you need an input element so i'm going to go ahead and click on the question mark here and it's going to bring up images but more importantly it's going to bring up the layers that are currently in your file and i'm going to go ahead and double click on that stone wall and you can see here how it's now applied as far as the depth and shadows to the overall grayscale here you can come in you can play around with elevation you can make it like super duper jaggy maybe you want it a little bit more subtle um you can also change as far as depth is concerned or if you want it to be again much lighter at the end though just make sure you say okay once again at this point you're going to do just like you did with the normal you're going to go up to file again be careful to make sure you're not choosing export to stonewall normal or whatever the name of your file is you want to make sure you're hovering over that export as and here i'm going to go ahead and i'm going to highlight the word normal after my underscore and i'm going to change this to bump i'm going to go ahead and export again it's going to ask you for you know quality i'm just going to go ahead and tell it export and now at this point if i come back over to my folder here you can now see that i have the three files that are needed as far as creating and baselining a texture in a game engine and then building out the material as far as giving it that depth and shininess and also the shadowing that the lighting would catch in the game engine

Channel: Dr. D

Views: 21,771

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Id: zoe4VI9CTuk

Length: 6min 43sec (403 seconds)

Published: Sun Jan 23 2022