Carnage Grains

Start here

Open the Carnage Grains tab in the 3D Viewport sidebar. Choose the mesh you want to fill with grains, set the timeline to frame 1, and click Start.

Source & display

Fill Volume

Mesh whose interior is filled with grains when the simulation starts. Use a closed mesh to define the volume. If the source is too small for the chosen Grain Radius, no grains will appear in the viewport. Reduce the radius or make the source larger.

DisplayDefault: Point Cloud

How grains are drawn in the viewport.

• Points: Display grains as mesh vertices with minimal additional geometry.
• Point Cloud: Display grains as native points using their individual radii. Suitable for viewing large particle counts.
• Spheres: Instanced ico spheres with smooth shading. Accurate but heavy. May slow viewport with many particles

Start & Reset

1. Start fills the source, builds the simulation, and starts timeline playback. Initialization can take longer for a dense source or many glue bonds.
2. Pause using Blender’s timeline playback control. Scrubbing previously simulated frames replays saved history.
3. Reset stops playback, returns to frame 1, and clears the current simulation/history. Exported cache files remain on disk.
4. After changing packing, topology, or binding settings, reset and start a fresh simulation. Existing cached frames are not recomputed by changing settings.

Counts & locked controls

The numbers in this panel help you understand your simulation:
Grains shows how many grains will fill your source before you start. A smaller Grain Radius creates more grains; a larger radius creates fewer.
Particles shows how many grains are in the running simulation.
Cached shows how many frames have been stored for playback and the last stored frame. You can revisit these frames without simulating them again.