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Snowfall

Shader parameters

Color Looks

Sky

Sky value

The night at the top of the frame. Its alpha, with Background opacity, sets how much sky is drawn.

Horizon

Horizon value

The night toward the bottom of the frame.

Snow

Snow value

The color of the flakes.

Lamp

Lamp value

The lamp's light, on the flakes near it and in the haze around it.

Density0.6

Density numeric

How much snow is falling.

Flake size1

Flake size numeric

Size of the flakes.

Depth of field1

Depth of field numeric

How out of focus the nearest and farthest flakes are.

Motion blur0.6

Motion blur numeric

The short streak each flake draws along its fall, as in a photograph.

Wind0.35

Wind numeric

Sideways drift. Negative blows to the left.

Flutter1

Flutter numeric

How far each flake sways as it falls.

Lamp position

Lamp position

X0.78

Lamp position X numeric

Y0.12

Lamp position Y numeric

Where the lamp is. Flakes near it are brightest.

Lamp1

Lamp numeric

How strongly the lamp lights the flakes near it.

Haze0.5

Haze numeric

The glow of the lamp in the falling snow.

Speed1

Speed numeric

Speed of the fall.

Stir1

Stir numeric

How far the cursor pushes the flakes aside.

Opacity1

Opacity numeric

Opacity of the whole effect over the page.

Background opacity1

Background opacity numeric

Turn the sky down to snow over your own page.

Snowfall

Free for Aperveil 1.0