Voxel Data

Voxel data renders a voxel source, working very similarly to an image texture, but in 3D. Various input data source types are available (such as smoke voxel data, or external files), as well as various interpolation methods.

The default voxel data source, Smoke, is used for rendering smoke simulations. Other sources include binary raw formats, and Image Sequence, which can be used to stack a sequence of images into a 3D representation, which is a common format for medical volume data such as CT scans.

Settings

../../../../../../_images/render_blender-render_textures_types_volume_voxel-data_panel.png

Voxel Data panel.

File Format
Blender Voxel
Default binary voxel file format.
8 bit RAW
8 bit gray-scale binary data.
Image Sequence
Generate voxels from a sequence of image slices.
Smoke
Render voxels from a Blender smoke simulation.
Source Path
The external source data file to use for 8 bit Raw data and Blender Voxel formats.
Domain Object (Smoke)
Object used as the smoke simulation domain.
Source
Smoke
Use smoke density and color as texture data.
Flame
Use flame temperature as texture data.
Heat
Use smoke heat as texture data. Values from -2.0 to 2.0 are used.
Velocity
Use smoke velocity as texture data.
Resolution
Resolution of the voxel grid when using 8 bit Raw data.
Interpolation
Nearest Neighbor
No interpolation, fast but blocky and low quality.
Linear
Good smoothness and speed.
Quadratic
Mid-range quality and speed.
Cubic Catmull-Rom
Smoothed high-quality interpolation, but slower.
Extension
Extend
Extend by repeating edge pixels of the image.
Clip
Clip to image size and set exterior pixels as transparent.
Repeat
Cause the image to repeat horizontally and vertically.
Intensity
Multiplier for intensity values.