Painting the color maps in Cycles
by Enrico Valenza, Pierre-Armand Nicq, Romain Caudron
Blender 3D: Designing Objects
- Blender 3D: Designing Objects
- Table of Contents
- Blender 3D: Designing Objects
- Blender 3D: Designing Objects
- Credits
- Preface
- 1. Module 1
- 1. Straight into Blender!
- 2. Robot Toy – Modeling of an Object
- Let's start the modeling of our robot toy
- Using the basic modeling tools
- Modeling the head
- Modeling the antenna
- An introduction to the Subdivision Surface modifier
- Modeling the thunderbolts
- Modeling the eyes
- Modeling the chest
- Modeling the neck
- Modeling the torso
- Modeling the buttons
- Modeling the fork
- Modeling the main wheel
- Modeling the arm
- Using Blender Internal to render our Robot Toy
- Summary
- 3. Alien Character – Base Mesh Creation and Sculpting
- 4. Alien Character – Creating a Proper Topology and Transferring the Sculpt Details
- 5. Haunted House – Modeling of the Scene
- 6. Haunted House – Putting Colors on It
- 7. Haunted House – Adding Materials and Lights in Cycles
- 8. Rat Cowboy – Learning To Rig a Character for Animation
- 9. Rat Cowboy – Animate a Full Sequence
- 10. Rat Cowboy – Rendering, Compositing, and Editing
- 2. Module 2
- 1. Modeling the Character's Base Mesh
- 2. Sculpting the Character's Base Mesh
- 3. Polygonal Modeling of the Character's Accessories
- 4. Re-topology of the High Resolution Sculpted Character's Mesh
- 5. Unwrapping the Low Resolution Mesh
- 6. Rigging the Low Resolution Mesh
- Introduction
- Building the character's Armature from scratch
- Perfecting the Armature to also function as a rig for the Armor
- Building the character's Armature through the Human Meta-Rig
- Building the animation controls and the Inverse Kinematic
- Generating the character's Armature by using the Rigify add-on
- 7. Skinning the Low Resolution Mesh
- 8. Finalizing the Model
- 9. Animating the Character
- 10. Creating the Textures
- Introduction
- Making a tileable scales image in Blender Internal
- Preparing the model to use the UDIM UV tiles
- Baking the tileable scales texture into the UV tiles
- Painting to fix the seams and to modify the baked scales image maps
- Painting the color maps in Blender Internal
- Painting the color maps in Cycles
- 11. Refining the Textures
- 12. Creating the Materials in Cycles
- 13. Creating the Materials in Blender Internal
- 14. Lighting, Rendering, and a Little Bit of Compositing
- 3. Module 3
- 1. Overview of Materials in Cycles
- 2. Managing Cycles Materials
- 3. Creating Natural Materials in Cycles
- Introduction
- Creating a rock material using image maps
- Creating a rock material using procedural textures
- Creating a sand material using procedural textures
- Creating a simple ground material using procedural textures
- Creating a snow material using procedural textures
- Creating an ice material using procedural textures
- 4. Creating Man-made Materials in Cycles
- Introduction
- Creating a generic plastic material
- Creating a Bakelite material
- Creating an expanded polystyrene material
- Creating a clear (glassy) polystyrene material
- Creating a rubber material
- Creating an antique bronze material with procedurals
- Creating a multipurpose metal node group
- Creating a rusty metal material with procedurals
- Creating a wood material with procedurals
- 5. Creating Complex Natural Materials in Cycles
- 6. Creating More Complex Man-made Materials
- 7. Subsurface Scattering in Cycles
- Introduction
- Using the Subsurface Scattering shader node
- Simulating Subsurface Scattering in Cycles using the Translucent shader
- Simulating Subsurface Scattering in Cycles using the Vertex Color tool
- Simulating Subsurface Scattering in Cycles using the Ray Length output in the Light Path node
- Creating a fake Subsurface Scattering node group
- 8. Creating Organic Materials
- Introduction
- Creating an organic-looking shader with procedurals
- Creating a wasp-like chitin material with procedural textures
- Creating a beetle-like chitin material with procedural textures
- Creating tree shaders – the bark
- Creating tree shaders – the leaves
- Creating a layered human skin material in Cycles
- Creating fur and hair
- Creating a gray alien skin material with procedurals
- 9. Special Materials
- Bibliography
- Index
There are no differences in painting in Blender Internal or in Cycles, because the Paint Tool is exactly the same; the only difference is in the preparation of the materials.
In this recipe, we are not going to repeat the procedure already explained in the previous one; we'll just set up the file for the painting and test whether it's possible to paint in real time on all 5 image textures at the same time, as it is in Blender Internal (spoiler: it is).
Let's start with the Gidiosaurus_painting_BI.blend file; in that file, we already have the UV/Image Editor windows set and the 5 materials assigned to the 5 different UDIM tiles and parts of the mesh.
In case you want to start with a brand new file, here you need to repeat the steps of the Preparing the model to use the UDIM UV tiles recipe in this chapter. Then, continue with the following:
- Be sure you're in Object Mode.
- Go to the main top header and click on the Engine to use for rendering button; switch from Blender Render to Cycles Render.
- Split the 3D view into two horizontal rows and change the top one into a Node Editor window; press the N key to get rid of the Properties sidepanel.
- In the Material window, select the Material_U0V0 slot; click on the Use Nodes button or select the Use Nodes checkbox in the Node Editor toolbar:
Enabling the nodes for the materials under Cycles
- Put the mouse pointer inside the Node Editor window and add an Image Texture node (press the Shift + A keys and in the pop-up menu, go to the Texture item to select Image Texture). Connect its Color output to the Color input socket of the Diffuse BSDF node.
At this point, if we haven't already painted the color textures in Blender Internal, we should load the
blank_U0V0.pngimage in the Image Texture node and then do the same for the other 4 materials.Instead, because we already have the color textures, let's load them in the Cycles materials. To see whether everything works as it should, we'll paint on them through the 3D viewport.
- Click on the double arrows to the side of the Open button in the Image Texture node and select the U0V0_col.png item from the pop-up menu (remember that the 5 color textures are already loaded inside the blend file):
Selecting one of the already loaded images in the Image Texture node for the materials under Cycles
- Repeat step 4 to step 6 for the other 4 materials.
Now, the steps are really simple:
- Go to the Brush subpanel and switch the foreground color with the background black color.
- Trace in the 3D viewport, a continuous stroke enveloping all the Gidiosaurus body parts:
The single stroke test under Cycles
This is the proof that it works exactly as in Blender Internal.
- Press Ctrl + Z to undo the stroke and save the file as
Gidiosaurus_painting_Cycles.blend.
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