YT YouTube2Text

YouTube2Text → Transcripts → Ep.1 Mesh editing (sculpting) - From AI to Game-ready

Ep.1 Mesh editing (sculpting) - From AI to Game-ready — Transcript

by Stefan 3D AI · 3,475 words · 497 segments · language en · Watch on YouTube

Open in transcriber Summarize with AI Download SRT/VTT

Full transcript

0:00In this video we're gonna learn how to
0:02turn AI generated model into game ready and
0:05this episode will be about mesh editing also
0:08known as sculpting.
0:10Hey guys this is Stef and many of
0:11you ask about simple tutorial how to do
0:14edits, enhance 3d models you create in 3d
0:17AI tools and how to actually bring them
0:20to production, do some small changes and I
0:22know a lot of people started to play
0:25with 3d AI tools without any knowledge and
0:28this tutorial is just for you so you
0:30get that bare minimum of knowledges so you
0:33can actually edit your model, enhance it, use
0:36it wherever you want like for videos, for
0:38games and it is easier than you can
0:41imagine.
0:41Let's get started.
0:42So for this tutorial we created this nice
0:45dino and you can see the reference images
0:47we used high temp 3d there is a
0:50video on my channel how you can use
0:52it and so far I think it is
0:54most accurate to the model providing like with
0:56a lot of nice details.
0:58So we're gonna use blender for all the
1:00tutorials because it's free, it's amazing, it's powerful
1:04and you can almost do everything you need
1:06here.
1:07So how to open the model you basically
1:09export something into GLB, here is my exported
1:12GLB I'll drag and drop it here, do
1:15not change any setting, press import GLT wait
1:18a while and here is my model.
1:20So that's it.
1:21Also before we start let me introduce you
1:24to some very basic controls that we will
1:26be using along the video and I think
1:28that's more than enough to get acquainted with
1:31the blender.
1:31Camera controls.
1:32So the first one is wheel, by pressing
1:35the wheel we can actually rotate the camera
1:37and that's super easy.
1:38Another thing is that with pressing a wheel
1:41and also pressing shift we can actually pan
1:44the camera like this.
1:45So this combination of keys is more than
1:48enough like to get in every position that
1:51we might need.
1:52But there is another very useful hotkey that
1:55called tilde the key before one on the
1:58keyboard and when you press it and hold
2:01you will have this sort of menu and
2:03if we drag mouse to one of the
2:06view and release the tilde then it will
2:10actually rotate the camera and we can always
2:12continue using wheel.
2:14Also we'll be using like simple mods as
2:17move rotate and scale and you can actually
2:19switch between them here on the left side.
2:22Now let's move on to the sculpting.
2:24So the first thing we'll do we'll remove
2:25the material and do some cleanup after AI
2:28generation.
2:29We'll do retexturing in the next videos because
2:31we'll change the geometry the current texture will
2:34not be aligned and we'll remove it and
2:36we'll redo that in the next videos.
2:38So we need to press on the material
2:41tab which is this one and then press
2:44a minus button which will remove the texture
2:46and we also change modes to solid so
2:50we only see the geometry and focus on
2:52it.
2:52Okay so let's decide what we're gonna change
2:55on the model.
2:56We will remove the eyes and replace them
2:59with spheres.
3:01We'll also redo the tooth.
3:04We're smoothing the transition to this pattern on
3:06a belly.
3:07We will rework the stripes to make them
3:11more accurate and appealing.
3:12There is a problem on the claws we
3:15will make them more accurate.
3:17Yeah you can see this these areas and
3:19under the tail we also extend the pattern
3:21and make it more accurate and maybe some
3:24small adjustments here.
3:26Guys before we continue I really need to
3:28know if you need this video and I'll
3:30need to continue creating more tutorials like this.
3:33Drop a comment, like and subscribe and let
3:35me know if that was useful or what
3:37to improve.
3:38And always remember you can find me on
3:40a discord and I'll happy to help with
3:42anything related to 3D AI tools.
3:44Let's go.
3:45Okay so let's get it started.
3:46First thing we'll do we'll go to edit
3:48mode by pressing this.
3:50Then we will go to the edge mode
3:53by pressing this button.
3:54Press a button on the keyboard and after
3:57we are inside the edge mode by pressing
4:00right mouse button you will need to find
4:03clear sharp and press it.
4:05That will basically remove sharp edges.
4:07A very important step so our model is
4:10rendered properly.
4:11You can also see all mouse buttons and
4:14keyboard buttons that I press here so don't
4:17get lost.
4:17And now we are ready to go into
4:19the sculpting mode.
4:20So let's go to the mode and sculpting
4:22mode.
4:23So the first thing we need to do
4:25is to remesh it and basically that will
4:27add more polygons so whenever we use brushes
4:30the geometry looks smooth.
4:33So in this example we will try to
4:35do voxel size or 0.002. We'll press
4:41remesh.
4:42We'll have to wait a little bit and
4:44then we'll see if the geometry still look
4:47decent.
4:48You can actually play with the button to
4:50see if that's enough for your case.
4:52You can basically paint something with the clay
4:55brush by simply pressing the left button and
4:58moving around and if the result is smooth
5:01then probably the resolution is enough.
5:03If it's too smooth and there's too much
5:06vertices and it's too laggy try to get
5:09resolution higher but if it's not enough try
5:12to get resolution lower.
5:13So in our case 0.002 is just
5:17enough and we'll be continuing.
5:19Another cool thing is that if you work
5:21with symmetric models such as mine we can
5:24actually split it into the half and mirror
5:27it and then do changes on one side
5:30and the other side will be mirrored and
5:32will save a lot of time.
5:33So the first thing we'll go to the
5:35front view.
5:36We go to the edit mode, wireframe mode
5:38and we'll also activate x-ray mode.
5:41So whenever we select it will also select
5:43something behind the model.
5:45We'll try to select the exactly the half
5:47of the model.
5:48In blender selectors, masks and brushes has option
5:52to invert the use if you hold the
5:55ctrl.
5:56So here you can see by holding ctrl
5:58and doing the selection I can deselect some
6:00area.
6:01Without ctrl it will actually select it.
6:03Now it looks almost perfect and we'll press
6:06x on the keyboard and delete faces.
6:09All right now we can go back to
6:11the object mode.
6:12Let's find and add mirror modificator and choose
6:15x on the axis.
6:16It might be a different axis in your
6:18case depends on where the model is rotated
6:20but yeah.
6:21We also activate the clipping option.
6:23If everything seems fine we can actually press
6:26that arrow down and press apply.
6:29Now this is a solid model and we
6:30know 100% that two sides are identical.
6:34Now when we go to the sculpt mode
6:36we need to make sure the sculpting the
6:39mirror mode activated at this one and all
6:42the changes will be mirrored.
6:44But since we did change the geometry in
6:46object mode it will not hurt to do
6:48remesh once again and after that done we
6:50are ready to do sculpting.
6:52Here are a few hotkeys I will be
6:54using in sculpting.
6:55So the first one is F and it
6:58is for changing the brush size very easily.
7:01So you just press and hold F and
7:03move your mouse and left to right and
7:05see what brush size you want.
7:07Press left mouse button to confirm.
7:09You can alternatively change it here the strength
7:12and the radius.
7:13Also we'll be using M for masking and
7:17we'll often use ctrl to do inverse action.
7:21So for example if I'm in the mask
7:22and paint something and hold ctrl it will
7:24actually remove the mask.
7:26Same for the brushes if I do add
7:28something and then I press ctrl it will
7:31actually inverse the action.
7:33Okay so we're gonna start with eyes.
7:36So the first thing we'll choose the mask
7:37we'll set the convenient size and we'll try
7:41to paint the eye.
7:43Don't forget to make sure the mirror mode
7:46is selected.
7:47Okay so we'll try to paint an eye
7:50and then we'll try to remove the eyeball
7:53as it is right now just simply moving
7:56it back and adding a custom 3d ball.
7:59So here I already finished painting the mask
8:01and then we can go to the mask
8:04and press sharpen mask that will make it
8:07like sharper.
8:09With the ctrl we'll remove some areas and
8:11we'll add an area to make it final
8:13and accurate.
8:14When it's done let's do the following.
8:16We'll go to the mask and we'll invert
8:18the mask.
8:19So how mask work?
8:21The masked area will basically not affected by
8:24any brushes.
8:25Now what we can do is go and
8:27choose elastic grab make it bigger and let's
8:30try to just push this eyeball inside.
8:34It is as simple as we use our
8:36hands.
8:37Now we'll choose inflate and with the ctrl
8:41we'll actually deflate it inside and by painting
8:45it will just move push it inside.
8:49All right so here is the current result
8:52and that is more or less enough.
8:55Now we'll choose the smoothen brush reduce a
8:58little bit strange and smoothen the edges.
9:01Also smooth brush is always available by pressing
9:04shift.
9:05You don't have to switch to the smooth
9:07brush you can work with any other brush
9:09press shift smoothen and continue using that brush.
9:12Now when this is done let's go to
9:14the mask and press clear mask and now
9:16we need to just fix the eyeball.
9:20We'll just use the smoothen mask with the
9:22smaller radius and just move the mouse around
9:26and make it smoother.
9:28When we are back to in a object
9:30mode let's press shift a go to the
9:33mesh and let's create uv sphere.
9:36Let's rotate it by 90 degree so it
9:39looks like this.
9:40Then let's move it a bit higher let's
9:44scale it by dragging that inner circle.
9:46You can also do that by hot keys
9:49but here I'm showing like how you can
9:51use this gizmos.
9:52Okay at this stage what we're gonna do
9:54is that to go to the object we'll
9:57set the origin to the 3d cursor and
10:01the 3d cursor must be located in the
10:04word origin.
10:05If it's not located there don't worry you
10:08can always go to the view and there
10:10is a 3d cursor and just make sure
10:12this one is everywhere zero.
10:15This is how you can change 3d cursor
10:17to zero.
10:18Why do we need it is just so
10:20we can set a mirroring correctly.
10:22So the origin basically is that point that
10:25you drag to move the object or the
10:27point relatively to which the object is moved.
10:31All right when the origin is in place
10:34we can add the modifier called mirror again
10:37and we can see that it's here.
10:40Also while in object mode press right mouse
10:43button and add shade out the smooth that
10:46will result in modifier.
10:49Then we can go back to the edit
10:50mode and let's adjust our eye.
10:54Okay let's scale it a little bit let's
10:56find the right position smooth to select whole
10:59object just press a on the keyboard.
11:01Okay and I think that's enough let's go
11:04back to object mode and let's select the
11:08dino again and go to adjust the eye
11:12hole a little bit.
11:14Let's use elastic wrap to adjust the shape
11:17of the eye hole.
11:19Again it's very simple press and drag and
11:21it will be adjusted.
11:23Also let's use the clay brush to inflate
11:26some areas around the eye.
11:28Okay so let this right side okay like
11:31that let's smoothen it a little bit can
11:35reduce the strength a little bit.
11:37Let's adjust the shape here a little bit
11:40so it's look exactly as an eyeball.
11:44Okay and now I think we're happy with
11:46the eyes let's move on to the teeth.
11:49So what we're gonna do is first mask
11:52the teeth and to try to remove them
11:54there is a different mask called box mask.
11:57This button is mask and this is a
12:00box mask.
12:01Okay and with the box mask it can
12:03be projected from you and we can select
12:05them like this go to normal mask and
12:09just paint on top.
12:11Okay we now selected almost everything just final
12:14touches.
12:15Now you can see the opposite side is
12:17also selected because the mirror mode is activated
12:20and if you accidentally select something wrong but
12:23press ctrl and paint on top and it
12:25will invert.
12:25When the job is done let's go to
12:28the mask and invert the mask and we'll
12:31select the line project and by simple move
12:34like this we can actually cut the whole
12:37geometry.
12:38Now we can smoothen these areas a little
12:41bit but most likely will not be enough
12:43so here is another cool thing in sculpting
12:47that called dynamic retopology.
12:50So we'll first clean the mask we'll try
12:52smoothen it this part so you can see
12:56these small artifacts and to fix them let's
12:59activate dyne topo.
13:01Okay so let's try use clay brush with
13:03the ctrl to inflate the area and smoothen
13:06it with the shift pressed.
13:08We can also use brush called draw sharp
13:11with the ctrl and we can draw the
13:14line the separate separator line here.
13:18Okay and also use shift to smoothen when
13:20we happy right so you can always combine
13:23it like a smoothen this part.
13:25Now let's enable dyne topo.
13:28So first make sure on your object all
13:31the modifiers are applied if not you can
13:34simply apply it like that just press the
13:37arrow down apply and then you can enable
13:40dyne topo again.
13:41All right so basically what it does it
13:43recalculates the mesh and amount of polygons dynamically
13:46when you actually work with it.
13:48So we'll use the clay brush again and
13:50we'll add something and it will recalculate the
13:53geometry the polygons and stuff and let's try
13:56to smoothen this now and you can see
13:59everything is fixed now but be careful use
14:01dyne topo only when you really add more
14:04geometry because it will constantly increase the amount
14:07of polygons and that might result into freezes
14:11and stuff sometimes if that's not required just
14:13disable that.
14:14Okay here is my result so far and
14:17I also disabled dyne topo and I think
14:20that's enough looks looks very good.
14:23Now let's go to the object mode and
14:26we're gonna create new twos.
14:28So it's very simple let's press shift a
14:31create mesh and cube then go to edit
14:34mode let's select the top face and delete
14:38it by pressing x and choosing like delete
14:41face.
14:42Let's scale it to smaller scale okay let's
14:45move it let's try to position it near
14:48the mouth let's add a modifier subdivision that
14:52will actually smoothen the geometry let's set it
14:55to 2.
14:56Let's also add outer smooth as before.
14:59Alright so now the shape looks correct go
15:02back to the edit mode and try to
15:04locate it with the rotating movement we can
15:07also scale it a little bit let's add
15:10more smooth so there are no any no
15:13artifacts.
15:14Okay we'll scale down the bottom polygon and
15:17extend it a little bit so here we
15:19can take a look on it from the
15:21bottom view to see that it actually fits
15:23top part of the mouse.
15:25Now when it's done we can actually duplicate
15:27it but make sure you are in edit
15:29mode that it will create additional geometry within
15:32the object not another object.
15:34Okay shift d duplicate and we can move
15:39it a little bit you can also press
15:40g to move it along the view and
15:44s on a keyboard to scale it.
15:46Here is our another twos following the same
15:48logic I just added the rest of the
15:51twos some are smaller and here you can
15:53see them now let's go to the add
15:55mirror modifier on the x-axis.
15:58Okay so our teeth are ready now let's
16:01go back to the sculpt node and I
16:03can see the artifact here that I want
16:04to fix let's press shift on the keyboard
16:07and just smoothen this area boom that's fix
16:11it as easy as it can be we
16:13just fix it that smoothen the area let's
16:15go to the side view elastic grab one
16:18of my favorite brushes all right a little
16:21bit here a little bit here make them
16:23a little bit more symmetric okay now let's
16:25move to the neck area so first of
16:28all I want to smoothen the transition and
16:31we'll use a smooth brush again let's basically
16:34smoothen all the stripes let's add the strength
16:38of the brush we also will smoothen the
16:40side stripe all along the body okay we'll
16:44completely remove the top stripes and we'll actually
16:50draw them ourself let's use draw sharp brush
16:54and we will gonna do we'll start from
16:58the middle because it's symmetric maybe we'll add
17:00more strength and let's start from the middle
17:03and draw the line nice so you can
17:07see this line looks way accurate and using
17:11like the pinch brush will narrow this area
17:15and look how better it looks now so
17:19actually continue doing the same use the draw
17:21sharp and then the pinch brush we can
17:24smoothen it with lower string okay so we'll
17:28do the the rest and look how beautiful
17:30I made it after 15 minutes now we're
17:33gonna try to modify the area under the
17:36tail so we'll use elastic wrap and first
17:38we'll modify the shape of the tail now
17:42let's choose the draw sharp brush again in
17:45a stroke menu let's choose line instead of
17:50space let's make it smaller holding F strength
17:54to 0.5 and let's try to make
17:58a line here you can see how line
18:00work instead of space you can experiment with
18:03another modes which one works best for you
18:05okay so here we go it's easier to
18:08draw the line sometimes but sometimes you better
18:11do that manually let's smoothen it a little
18:14bit with small strength and and use pinch
18:18brush to narrow this line all right look
18:22how good it is and we're gonna draw
18:24new sections okay so here are the results
18:27I just ended like doing the same process
18:30as we did for the front side now
18:32let's also add some small details we'll be
18:37using case sharp brush and we can make
18:40you know this small parts connected a little
18:43bit deeper and it adds like some cool
18:45effect all right now let's fix the claws
18:49so the first of course let's smoothen the
18:51geometry okay let's smooth around use elastic wrap
18:55to adjust the shape a little bit and
18:57at this stage we can use crease polish
19:00brush and basically add crease around right which
19:07will look way way more accurate than it
19:10was before look how beautiful it is let's
19:13use pinch also to narrow this a little
19:16bit okay so here is our claw and
19:20here I just finished all in the same
19:23manner look how beautiful they are the same
19:25exact thing we can do for the claw
19:28on the feet absolutely the same logic and
19:31here look how nice they look and as
19:34a final touch I want to go back
19:36to the neck and the body and with
19:39the line stroke for the jaw sharp brush
19:43we're gonna just make this one sharper more
19:47noticeable all right look way nicer let's also
19:51pinch it a little bit yeah and now
19:54the pattern is more prominent so here is
19:57our result look how beautiful it is we
20:00have our teeth we have our spheric eyeballs
20:04we fixed a lot of artifacts everything looks
20:07way smoother the pattern on the belly on
20:10the neck and the tail looks just amazing
20:12we fixed it all claws on hands on
20:16the feet and so on we kept pattern
20:18here we adjusted the shape of this area
20:21and here we are this is done so
20:23we just actually sculpted the model adjusted geometry
20:27until the perfect condition adjusted the artifacts of
20:31ei model adjusted the smoothness fixed some shading
20:34and so on in the next episode we're
20:37gonna look how to make the low poly
20:39version of it and big textures such as
20:42normal map and so on to follow the
20:44best practices of game ready models we'll also
20:47look into texturing and rigging so guys let
20:50me know if this tutorial actually works for
20:52it was easy to follow i'm reading all
20:55the comments and try to make next tutorial
20:57even better

About this transcript

This page contains the full transcript of Ep.1 Mesh editing (sculpting) - From AI to Game-ready by Stefan 3D AI, generated from the public captions YouTube serves with the video. The transcript has 3,475 words across 497 segments, with the original timestamps preserved so you can click any line to jump to that moment in the embedded player.

What you can do with it

Use the transcript to take notes, quote the speaker, build a study guide, generate a summary with ChatGPT or Claude via the YouTube Summary tool, or export it as a timed subtitle file with YouTube to SRT. You can also re-open it in the transcriber to translate the transcript into 100+ languages.

Free YouTube transcript tool

YouTube2Text is a free YouTube transcript generator — no signup, no daily limit. Paste any YouTube link and get the full transcript instantly, with timestamps, click-to-jump, translation to 100+ languages, AI prompts for ChatGPT, Claude, and Gemini, and exports to TXT, SRT, VTT, or Markdown.