API Reference: SamplingMode

SamplingMode is an interface that defines how pixels are sampled when an image is scaled, rotated, or transformed.

Implementations

There are three main ways to specify sampling in Skija:

1. FilterMipmap: Standard linear/nearest filtering with optional mipmaps.
2. CubicResampler: High-quality bicubic interpolation (Mitchell, Catmull-Rom).
3. SamplingModeAnisotropic: High-quality filtering for textures viewed at sharp angles.

Common Presets

• SamplingMode.DEFAULT: Nearest neighbor filtering (fastest, blocky).
• SamplingMode.LINEAR: Bilinear filtering (smooth, default for most uses).
• SamplingMode.MITCHELL: High-quality bicubic (smooth and sharp).
• SamplingMode.CATMULL_ROM: Very sharp bicubic.

FilterMipmap

This is the most common sampling mode. It uses two parameters:

FilterMode

• NEAREST: Samples the single closest pixel.
• LINEAR: Interpolates between the 4 closest pixels.

MipmapMode

• NONE: No mipmaps used.
• NEAREST: Samples from the closest mipmap level.
• LINEAR: Interpolates between two mipmap levels (Trilinear filtering).

Usage

// Bilinear sampling
canvas.drawImage(img, 0, 0, SamplingMode.LINEAR, null);

// Nearest neighbor (pixel art style)
canvas.drawImage(img, 0, 0, SamplingMode.DEFAULT, null);

// High-quality bicubic
canvas.drawImage(img, 0, 0, CubicResampler.MITCHELL, null);