Start learning with our library of video tutorials taught by experts. Get started

Creating Textures and Shaders in Maya
Illustration by Richard Downs

Painting bump maps


From:

Creating Textures and Shaders in Maya

with Eric Keller

Video: Painting bump maps

In this movie we're going to talk about how to add a bump texture to the mia_ material. I have a copper pot in this scene and an mia_ material has been applied to it, and I'm using the Chrome preset. The only thing I've done to it is I've adjusted the Reflectivity and brought it down to about 0.662 and I have lowered the Glossiness value a little bit, just toned down the reflections a little bit so that the pot itself is more visible. To add a bump texture I just need to scroll down to the bottom here, expand the Bump section, and I want to add my bump texture to the Standard Bump slot, not the Overall Bump slot.
Expand all | Collapse all
  1. 2m 19s
    1. Welcome
      1m 6s
    2. Using the exercise files
      1m 13s
  2. 17m 49s
    1. Explaining diffuse reflections
      2m 39s
    2. Defining glossy and blurred reflections
      2m 32s
    3. Looking at refraction
      4m 20s
    4. Describing the Fresnel effect
      1m 56s
    5. Understanding anisotropy
      1m 10s
    6. Identifying ambient and reflection occlusion
      1m 49s
    7. Defining sub-surface scattering
      2m 4s
    8. Simulating translucency
      1m 19s
  3. 1h 8m
    1. Using Maya's standard shaders with mental ray
      7m 2s
    2. Comparing mental ray and Maya shader nodes
      9m 12s
    3. Creating mental ray shaders
      2m 32s
    4. Making sense of mental ray shaders
      10m 35s
    5. Introducing the mia_material
      9m 16s
    6. Creating a custom mia_material preset
      9m 17s
    7. Looking at car paint materials
      6m 43s
    8. Using subsurface scattering shaders
      13m 33s
  4. 1h 5m
    1. Understanding UV coordinates
      4m 26s
    2. Comparing NURBS and polygon UVs
      4m 48s
    3. Mapping polygon UV surfaces
      13m 1s
    4. Using texture maps for color and other shader channels
      8m 1s
    5. Applying and projecting 2D procedural texture nodes
      4m 0s
    6. Applying 3D procedural texture nodes
      7m 1s
    7. Using ramp textures
      8m 12s
    8. Setting up utility nodes
      6m 29s
    9. Using file texture nodes
      9m 41s
  5. 22m 36s
    1. Applying the turbulence texture
      9m 37s
    2. Considering the round corners texture
      4m 17s
    3. Improving skin detail with ambient occlusion
      4m 27s
    4. Applying reflection occlusion
      4m 15s
  6. 33m 6s
    1. Painting bump maps
      4m 14s
    2. Creating normal maps
      5m 24s
    3. Applying normal maps
      6m 17s
    4. Creating displacement maps
      9m 14s
    5. Troubleshooting displacement maps
      7m 57s
  7. 33s
    1. Goodbye
      33s

Watch this entire course now—plus get access to every course in the library. Each course includes high-quality videos taught by expert instructors.

Become a member
please wait ...
Creating Textures and Shaders in Maya
3h 30m Intermediate Sep 28, 2010

Viewers: in countries Watching now:

Creating Textures and Shaders in Maya with Eric Keller shows how to create textures and materials, and then apply them to models to render realistic surfaces. The course covers working with the mental ray shading nodes, including the mental images architectural node, subsurface scattering nodes, occlusion, and car paint shaders, as well as how to incorporate these nodes into shading networks using the Hypershade editor. It also explores using textures, Maya software nodes, normal maps, and displacement maps for adding detail to models. Exercise files accompany the course.

Topics include:
  • Understanding shading concepts
  • Simulating the Fresnel effect for realistic reflections
  • Rendering transparent and translucent surfaces
  • Comparing mental ray and Maya standard shaders
  • Introducing the mia_material
  • Developing shader networks
  • Using subsurface scattering shaders
  • Mapping polygon UV coordinates
  • Incorporating texture nodes into networks
  • Improving skin detail with ambient occlusion
  • Painting bump maps
  • Creating normal and displacement maps
  • Troubleshooting maps
Subjects:
3D + Animation Textures Materials
Software:
Maya
Author:
Eric Keller

Painting bump maps

In this movie we're going to talk about how to add a bump texture to the mia_ material. I have a copper pot in this scene and an mia_ material has been applied to it, and I'm using the Chrome preset. The only thing I've done to it is I've adjusted the Reflectivity and brought it down to about 0.662 and I have lowered the Glossiness value a little bit, just toned down the reflections a little bit so that the pot itself is more visible. To add a bump texture I just need to scroll down to the bottom here, expand the Bump section, and I want to add my bump texture to the Standard Bump slot, not the Overall Bump slot.

The Overall Bump slot is reserved for the round corners node. I'll click on the checker icon to the right of Standard Bump. That'll pull up the Create Render Node. I'm going to choose a 3D texture so that the bmp is applied evenly without regard to the UV coordinates and I'll use Volume Noise. When I add a bump texture to a shader generally the Attribute Editor will switch to the bump 3D node or if it's a 2D texture it'll be the bump 2D node and this essentially controls the strength of the bump.

So the bump value is connected to the texture itself. So bump value is connected to Volume Noise, but the bump depth adjusts the strength of the overall bump. So I'm going to lower this down to say let's do it 0.1 to start with, and then I'm going to switch to the VolumeNoise tab and make some adjustments here just to change the pattern of the noise. Now the way a bump texture works is a grayscale of texture and the light values of the texture make the surface appear like it's bumping out; the dark values in the texture make it look as though the surface is bumping in.

It doesn't actually change the geometry of the surface in any way. It just creates the appearance of bumpiness in the render. So what I can do is I'll lower the Amplitude a little bit so you can see I am getting a little bit more gray in there, and that'll add a little bit variation, and I can change the Frequency by increasing this, bring it to higher frequency and lower the Density and you can experiment with the different noise types in the Volume Noise texture. It's one of the reasons why I like this particular texture. But I'm going to put it to Perlin Noise and see how that looks.

Let's do another render. So you can see now how the surface appears bumpy. It's a little bit strong so a couple of things I can do to adjust that is I can bring the Threshold up. You see how the texture is getting lighter when I bring that up and bring the Amplitude down so this is kind of like adjusting brightness and contrast. Let's do a little render region here and see how that looks. That's looking a little bit better. I'm going to graph the network, so I'm selecting the mia_material in the upper portion of the hyper-shade, right- clicking and choosing Graph Network, and now you can see how the network is connected.

So you can see how the bump3D node is connected to the Standard Bump channel using the Out Normal attribute. If you're using a 2D bump then this would be bump2D node as opposed to a 3D node and then the outAlpha of the texture is connected to the bump node here, so it's a single connection. Another thing that's kind of interesting to do is choose the same texture to control the reflectivity of the surface. So this'll add variation to the Specular Highlights. So what I can do is I'll just scroll up in the Attribute Editor, let me minimize Render View, and I'm going to scroll down to Reflection, and right-click VolumeNoise over Reflectivity.

Now I have the same texture connected to Bump and Reflectivity. So let's do a render. You can see how this is starting to break up the surface as well as the reflectivity and creating some interesting effects. Now I'm using procedural nodes for the bump value but you can also use file textures, so you can actually paint your own textures. When you create a bump texture if you're painting it in Photoshop, you just basically want to paint light and dark values and just remember that the lighter values are going to make the surface look like it's bumping out and darker values are going to make the surface look like it's bumping in.

There are currently no FAQs about Creating Textures and Shaders in Maya.

 
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.
Upgrade now


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

join now Upgrade now

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed Creating Textures and Shaders in Maya.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Notes cannot be added for locked videos.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.