# bump maps [[materials - bump maps#bump maps|Bump maps]] and [[materials - displacement maps|Displacement maps]] are used to add texture to a material. Bump maps add the illusion of a texture without changing the underlying geometry while Displacement maps actually change the geometry. Think of Bump maps as laminate flooring that has a picture of wood grain and Displacement maps that have actual wood grain. In Maya, you will need to change your panel rendering to shaded display (6 on keyboard) to get an approximation of what the textures will look like. ## bump maps Bump map textures create the illusion of a texture, not an actual texture. These are easier on the system because they are like a sticker applied to the geometry. These maps are grayscale images with black pixels moving the illusions of depth farther away from the surface and white pixels remaining on the surface. You can use both procedural computer-generated textures or external images to add textures. ### procedural bump map Start with a basic Maya material such as Phong. In the Attribute Editor, scroll down to **Common Material Attributes > Bump Mapping** and press the little checkerboard icon. ![[Pasted image 20221023122309.png]] A new **bump2d** node will open and you will have a **Create Render Node** menu to choose from. Select the **Maya 2d Textures** section on the left column. Choose one of the options in the right column. I’m using a **Fractal** for this demo. ![[Pasted image 20221023122847.png]] In the **bump2d** node, scroll down to the **2dBump Attributes** option and try out the **Bump Depth** slider. Note the slider number can be positive to make the texture stick out of the surface or negative to make the texture carve into the surface. In the **fractal** node, you can adjust parameters for the generated texture itself. Play with the sliders to see how how they affect the texture and the illusion of depth. Adjust **Amplitude** down as one of your first manipulations because Maya defaults to an extremely bold application of the texture. ![[Pasted image 20221023123251.png]] ### image bump map When adding external images, you need to copy your image files to the Maya Project folder. Images can be stored in either the **Assets** or **Source Images** directories. Similar to Procedural process above, start with a basic Maya material such as Phong. In the Attribute Editor, scroll down to **Common Material Attributes > Bump Mapping** and press the little checkerboard icon. ![[Pasted image 20221023122309.png]] A new **bump2d** node will open and you will have a **Create Render Node** menu to choose from. Select the **Maya 2d Textures** section on the left column. Choose **File** or **PSDFile** (if you have a Photoshop file) from the right column. In the Attribute Editor, you choose the **File** node and go down to **File Attribute > Image Name** and choose the little folder icon. Navigate to your image file and select **Open**. The texture will be added to your geometry. Similar to above, you can adjust things like the Depth and positioning. **Note, tweaking settings is often much easier in [[materials - hypershade editor|the Hypershade Editor]]**. --- Learn more… - [Maya at a Glance: Bump map, Normal Maps and Displacement maps in Arnold](https://youtu.be/IytfsDZUDf0) --- tags: #3d #maya #resources home: [[! 3d modeling- maya]]