How to Mix Materials Together with Texture Painting (Blender) — Transcript

Full transcript

1. 0:00In this Blender tutorial, I'll show you
2. 0:01how to mix two textures together with
3. 0:04texture painting. So, what we're going
4. 0:05to be doing is mixing together this moss
5. 0:07texture and this dirt texture. We'll be
6. 0:09mixing it on a plane and then we'll be
7. 0:11texture painting where we want the moss
8. 0:12to be and where we want the dirt to be.
9. 0:14And this can especially be useful for
10. 0:16ground textures to kind of disperse up
11. 0:18the pattern. You could also use this if
12. 0:19you have a large scale environment and
13. 0:21you want to mix between like some patchy
14. 0:23areas where there's rocks or grass or
15. 0:25dirt or sand, but it can also be used
16. 0:27for really any object or material. Now,
17. 0:29if you want to follow along using the
18. 0:31exact same textures that I'm using, then
19. 0:33I'm going to be downloading this ground
20. 0:34001 from Ambient CG. And I'll just
21. 0:37download the 4K JPEG version. And then
22. 0:40for the moss, I'm going to be
23. 0:41downloading this Moss 002. And so again,
24. 0:44this is on Ambient CG. And I'm going to
25. 0:45download the 4K JPEG version. And also,
26. 0:48I'll have a link in the video
27. 0:49description to Ambient CG's Patreon page
28. 0:52if you're interested in supporting them
29. 0:53cuz they make really great highquality
30. 0:55textures. So if you're interested, I'll
31. 0:56leave their Patreon page in the
32. 0:58description. So here in a new scene in
33. 0:59Blender, I'm just going to select
34. 1:00everything and we're just going to
35. 1:01delete everything. Let's go to the ad
36. 1:03menu and I'm just going to add a new
37. 1:05plane. And I'm going to scale the plane
38. 1:07up by five. So hit S and then type five
39. 1:09and enter. And I'll hit control A and
40. 1:11just apply the scale. So now let's go
41. 1:13over here to the shading workspace. And
42. 1:14I'm going to click on new to add a new
43. 1:16material. And then I will also be using
44. 1:18the node wrangler add-on. If you don't
45. 1:19have that enabled, you can click on
46. 1:21edit. You can go to the preferences. And
47. 1:23over here in the preferences, if you go
48. 1:24to the add-ons tab and search for node,
49. 1:26you can just enable the node wrangler
50. 1:28add-on. So you can close the user
51. 1:30preferences. So with the principled
52. 1:31shader selected, you can hit control
53. 1:33shiftt. So I'm first going to be going
54. 1:35in the folder with the ground textures.
55. 1:37And I'm going to select the color and
56. 1:38then hold down the control key and
57. 1:40select the roughness and the normal gel.
58. 1:42So with those three maps selected, click
59. 1:44on principal texture setup. Let's go
60. 1:46into the rendered view to see how this
61. 1:47is looking. Actually, we'll just go into
62. 1:48the material preview so we can see that
63. 1:50with some lighting already set up. Now
64. 1:52you can see the texture is a little bit
65. 1:53stretched. So let's go to top view by
66. 1:55hitting seven on the numpad and we'll go
67. 1:57into edit mode and I'm going to hit U
68. 1:58and we're going to click on the unwrap
69. 2:00project from view. So now it's not
70. 2:02stretched. Now if we go over here to the
71. 2:04mapping I can take the mapping scale and
72. 2:06I can turn up the X Y and Z values to
73. 2:08three. So it's a little bit bigger. So
74. 2:10now what I'm going to do is select this
75. 2:11principled shader. I'll hit shift D to
76. 2:13duplicate it. And I'll control shift
77. 2:15select the principled shader so we can
78. 2:16preview it. And then let's also drag it
79. 2:19up a little bit farther so we have more
80. 2:20space. And then I'll do the same thing.
81. 2:22So with the principled selected, I'll
82. 2:24hit control shiftt. And this time I'm
83. 2:26going to go inside the moss folder. So
84. 2:27again, link is in the description if you
85. 2:29want to download it. And I'll select the
86. 2:30color, hold down the control key, and
87. 2:32the normal GL and roughness. And click
88. 2:34on principled texture setup. And then
89. 2:36for this texture as well, I'm going to
90. 2:38turn the scale values to three. So
91. 2:40change them to three on the X, Y, and Z
92. 2:42on the mapping. So it's a bit smaller.
93. 2:43So now what I want to do is mix both of
94. 2:45these textures together. So to do this,
95. 2:47I can search for the mix shader. Let's
96. 2:50drop the mix shader here. And I'll
97. 2:51control shift select the mix shader to
98. 2:53preview it. And what I can do is put the
99. 2:54top one, the top BSDF here into the
100. 2:57shader. And then this one here into the
101. 2:59other shader. So now if we wait for this
102. 3:02to load up, if I drag the factor around,
103. 3:04it's going to blend between only using
104. 3:06the dirt at one or only using the moss
105. 3:09at zero. But what I want to do instead
106. 3:11is have some spots which are dirt and
107. 3:13some spots which are moss. So what we
108. 3:14need to do is create a mask and put the
109. 3:16mask into the factor. So, I'm going to
110. 3:18go to the ad menu and I'm going to
111. 3:19search for image texture. Drop this
112. 3:21here. And we're going to click on new to
113. 3:23create a new image texture. Now, here on
114. 3:25the width and height, I want to make it
115. 3:264K so it's higher quality. So, I'm going
116. 3:28to go with 496x 4,96. And I can just
117. 3:32call this mask. And also here on the
118. 3:34color, I'm going to make the color fully
119. 3:36white. And then it'll be painting black.
120. 3:38And then I will click on new image. So
121. 3:39now this color here can go into the
122. 3:41factor. So we'll wait for this to load
123. 3:43up. And you can see now it's all dirt.
124. 3:44And so now what we can do is we can
125. 3:46paint black. And then that's where the
126. 3:47moss is going to show up. However,
127. 3:49because we're going to be texture
128. 3:50painting this, we need to make sure we
129. 3:51UV unwrap it. And right now, the object
130. 3:53only has one UV map. But you can see
131. 3:55that these textures are already using
132. 3:57the UV map. So, if I like reuv this, it
133. 4:00would move around where the texture is.
134. 4:02Now, that may not be a problem for your
135. 4:03scene, but I'm just going to show you
136. 4:04how to create a separate UV map just in
137. 4:06case you have some sort of complicated
138. 4:08setup with a UV map and you just want to
139. 4:11create a new UV map to not mess up the
140. 4:12previous UV map that the other textures
141. 4:14are using. So, if you do want to create
142. 4:16a new UV map, you can go here to the
143. 4:18object data properties. And you can open
144. 4:20up the UV maps. And then you can click
145. 4:22on the plus here to create a new UV map.
146. 4:24And I'm just going to rename this to UV
147. 4:26map mask. So now what I want to do is
148. 4:28search for the UV map node. So go shift
149. 4:31A, search for UV map, drop this here.
150. 4:33And the UV can go into the vector. So
151. 4:35now what we can do is we can click here
152. 4:36on the dropown and we can choose the UV
153. 4:38map mask. Now, these textures, these
154. 4:41textures are still going to use the
155. 4:43first UV map because that's the default
156. 4:45one. And you can see here there is this
157. 4:46camera icon. And whichever camera icon
158. 4:48is selected, that's going to be the
159. 4:50active one or it's going to be the
160. 4:51default UV map. And so, because of this
161. 4:53texture coordinate set to UV, it's just
162. 4:55going to use whichever one is default.
163. 4:57So, make sure the camera icon has the UV
164. 4:59map selected. So, now what I want to do
165. 5:00is UV unwrap the new UV map. So, what
166. 5:03I'm going to do is go here to the UV
167. 5:04editing workspace and I'm going to
168. 5:06scroll over here and I'm going to click
169. 5:08here on UV map and I'm going to make
170. 5:09sure I choose the UV map mask. So, this
171. 5:11is the new one that we created. So, now
172. 5:13what I can do is just hit U and we're
173. 5:15just going to unwrap angle based. And
174. 5:17you can see now for a plane like this,
175. 5:19it just unwrapped it nicely. So, it's
176. 5:21just filling up all the texture space.
177. 5:23So, now what we can do is click here to
178. 5:25go to the texture painting workspace.
179. 5:27And I'm going to drag this panel here
180. 5:28really small because I want to see this
181. 5:30in the full screen. Now I'm going to
182. 5:32choose the paint soft brush because I
183. 5:34think the paint soft brush is good for
184. 5:35this. Let's also go into the material
185. 5:37preview so we can see the material. Now
186. 5:39here on the color, if I click here on
187. 5:40this kind of orangey color, I'm going to
188. 5:42make it fully black and that way we can
189. 5:44paint black and that's where the other
190. 5:45texture is going to show up. So if I
191. 5:47just start to click here and drag
192. 5:48around, you can see already the other
193. 5:50texture showing up. So now we have bits
194. 5:52of moss. However, this doesn't really
195. 5:53look that nice cuz it's like really
196. 5:55sharp on the edges. There isn't any
197. 5:56noise or blending and it just doesn't
198. 5:58look organic. So, I'm going to be adding
199. 5:59a texture here into the brush that we're
200. 6:02using to make it kind of textured on the
201. 6:04edges and make it look more natural and
202. 6:06organic. So, let's go here to the
203. 6:07texture. So, open this up. You want to
204. 6:09click right here on the active tool and
205. 6:11workspace settings and then scroll down
206. 6:12here. We're going to add a new texture.
207. 6:14We're going to click on new. We're going
208. 6:16to click on this button here, which is
209. 6:18going to go to the texturing tab. And
210. 6:20then here on image or movie, we want to
211. 6:22change this to clouds instead. And this
212. 6:24is basically Blender's procedural noise
213. 6:26texture. Now, here on the size, I'm
214. 6:28going to turn this to a 0.2. And here on
215. 6:30the depth, I'm going to turn this up to
216. 6:31the max of 30. So, type in 30. Now, what
217. 6:34I'm also going to do is open up the
218. 6:36colors here. And then I'm going to click
219. 6:37on color ramp and open up this color
220. 6:39ramp. And let's close the clouds here.
221. 6:41Make this smaller so I can see it
222. 6:42better. So, why I'm using this color
223. 6:44ramp setting right here is because I
224. 6:46want to make it more contrasted because
225. 6:47right now it's just like really gray and
226. 6:49I want to make it more sharp so you can
227. 6:50actually see it showing up. So, if I
228. 6:52click on the black tab and then click
229. 6:53here on the color to change this, what I
230. 6:55want to do is turn up the alpha so that
231. 6:57it's fully black and fully white with no
232. 6:59alpha. But now, what I'm going to do is
233. 7:01drag these tabs together. And you can
234. 7:03see if I drag them together, they're
235. 7:04going to be more contrasted. So, let's
236. 7:06now click on this button here to go back
237. 7:08to the active tool and workspace
238. 7:09settings. And I'm going to scroll down
239. 7:11here. Now, I want the texture to be kind
240. 7:13of random so that as I'm painting, it
241. 7:14looks random. So, on the mapping here,
242. 7:16instead of view plane, I'm going to
243. 7:18change this to random. and that will
244. 7:20randomize the texture every time I
245. 7:22paint. Now, we're going to scroll right
246. 7:23up here to the blend. And instead of
247. 7:25mix, I'm going to change this to
248. 7:27multiply instead. So, I can now just
249. 7:29click along here to start to paint. And
250. 7:31you can see the moss is showing up, but
251. 7:32we're not seeing that noise. Now, we
252. 7:34made the texture a fully white texture.
253. 7:36And so, we want to paint black so that
254. 7:38the moss will show up. However, in this
255. 7:40case, we actually want to make the color
256. 7:42fully white. So, change the color to
257. 7:43fully white. And of course, the blend
258. 7:45here is set to multiply. So now when I
259. 7:47start to paint here, let me just press F
260. 7:49to make my brush bigger. Now you can see
261. 7:51here on the texture we're painting. And
262. 7:53it's just kind of showing up in that
263. 7:54pattern. And I do think that the texture
264. 7:56is a little bit too sharp. So if I click
265. 7:58here to go to the texturing tab, let's
266. 8:00just scroll down here to color ramp. And
267. 8:01I'm just going to drag the color ramp
268. 8:03tabs just back a little bit. So now I
269. 8:05can just start to paint here. And you
270. 8:06can see we're adding the moss, but it's
271. 8:08adding it in a noisy pattern. So now
272. 8:10let's say that I've added a spot here
273. 8:11and there's just way too much moss and I
274. 8:13don't want that much moss. What I can do
275. 8:15is take the multiply here on the blend
276. 8:16type and I can change it to lighten
277. 8:18instead. Now, if I just paint along
278. 8:20here, we're going to basically erase it.
279. 8:22So, you can change it to lighten to
280. 8:24erase it, but then you can change it
281. 8:26back to multiply if you want to add more
282. 8:27color. So, now I can just paint all
283. 8:29along here and paint little patches of
284. 8:30moss and it definitely makes the ground
285. 8:32look a lot more interesting and it
286. 8:33breaks up the pattern. So, once you're
287. 8:35done texture painting, you want to save
288. 8:36this image. So, over here, if you open
289. 8:38up this panel here, you want to click on
290. 8:40image and click on save as. And I'm just
291. 8:42going to save this in the folder with my
292. 8:43project files as mass.png. You can save
293. 8:46it as a PNG or a JPEG. I'll save it as a
294. 8:48PNG and save that image. So that way
295. 8:51when you close Blender, Blender won't
296. 8:52lose the texture data because you've
297. 8:54saved out the image on your computer. So
298. 8:55we can just click back here to go to the
299. 8:57shading workspace to see the finished
300. 8:59texture. And then of course, if you want
301. 9:00to edit any of the textures, this
302. 9:02texture here are the moss textures and
303. 9:04this texture here are the dirt textures.
304. 9:06So, for example, I could just search for
305. 9:08like RGB curves and drop it here between
306. 9:11the base color and the principled. And
307. 9:12so now I could like make the color
308. 9:14darker, but you can see it's just going
309. 9:15to make the dirt darker because this
310. 9:17here is the dirt textures. I could also
311. 9:19make like the bump stronger by turning
312. 9:21up the strength there to make the dirt
313. 9:23look more bumpy. And it doesn't just
314. 9:25work for ground objects. You can also do
315. 9:26it for really any objects that you want
316. 9:28to mix two materials together. So, I
317. 9:30hope you found the video helpful and
318. 9:31thank you for watching.