enum Eagle::GPU::BlendMode

Overview

How newly drawn pixels combine with what's already there.

• Alpha is normal transparency, and the default.
• Additive adds light, for fire, lasers, glows and sparks.
• Multiply darkens, for shadows and tinted glass.
• Screen lightens more softly than Additive.
• None overwrites, ignoring alpha.

Defined in:

eagle/gpu/device.cr

Enum Members

None = 0

Overwrite pixels, ignoring alpha.

Alpha = 1

Normal transparency.

Additive = 2

Add color, which brightens. For glows and fire.

Multiply = 3

Multiply color, which darkens. For shadows and tinted glass.

Screen = 4

Lighten softly.

Instance Method Summary

• #additive?

  Returns true if this enum value equals Additive

• #alpha?

  Returns true if this enum value equals Alpha

• #multiply?

  Returns true if this enum value equals Multiply

• #none?

  Returns true if this enum value equals None

• #screen?

  Returns true if this enum value equals Screen

Instance Method Detail