Enum AlphaKind

Namespace

Egami.Pixels

Assembly

Egami.dll

How a pixel type stores alpha.

public enum AlphaKind

Fields

None = 0

The type has no alpha channel. Every pixel is opaque.

Premultiplied = 2

Premultiplied alpha: each color channel is stored already multiplied by alpha. The conversions of IPixelType<TSelf> still take and return straight values, so only code that reads the memory directly sees it.

Straight = 1

Straight (not premultiplied) alpha.

Examples

// What a pixel type stores, for code that handles any TPixel.
PixelLayoutInfo layout = Rgba16.Layout;
Console.WriteLine($"{layout.ChannelOrder} {layout.ChannelType}: {layout.ChannelCount} channels, {layout.BitsPerChannel} bits each, {layout.BytesPerPixel} bytes");
bool needsAlpha = layout.Alpha != AlphaKind.None;
bool eightBit = layout.ChannelType == PixelChannelType.Unorm8;
bool bgrOrder = Bgr8.Layout.ChannelOrder is PixelChannelOrder.Bgr or PixelChannelOrder.Bgra;