Smoke Shader Algorithm - Explanation Demo

Smoke Shader Algorithm

An interactive demo of a fluid dynamics algorithm

Based on the paper by Jon Stam and explained on Tuts+


Click on any cell to increase the smoke density.

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Controls

Display Mode

Display cell values as text or as color

Spread factor

Controls how fast it dissipates

Timestep

Control the speed of the simulation

Step

Manually control the timestep. Click to go to the next step

Horizontal Spread

Values less than 1 dissipate to the left, and more than 1 dissipate to the right.

Verical Spread

Less than 1 dissipates up, otherwise down

Color Weight

Multiply the color value by a factor. Does not affect the actual cell values, only the color.

Toggle Grid

Shows/hides the grid

Cell Size

Make the cells bigger or smaller