orx/orx-fx

orx-fx

Ready-to-use visual effects or filters. Most include orx-parameters annotations so they can be easily controlled via orx-gui.

The provided filters are based on OPENRNDR's Filter class

All filters provided by orx-fx assume pre-multiplied alpha inputs, which is OPENRNDR's default.

Effects index

Here's a (potentially incomplete) list of the effects provded by orx-fx.

Anti-alias

• FXAA, fast approximate anti-aliasing.

Blends

Blend filters take two inputs ("source" and "destination"), they are intended to be used in orx-compositor's layer blend. All blend filters are opacity preserving.

Photoshop-style blends

• ColorBurn
• ColorDodge
• Darken
• HardLight
• Lighten
• Multiply
• Normal
• Overlay
• Screen
• Add, add source and destination inputs
• Subtract, substract destination color from source color

Porter-Duff blends

• SourceIn, Porter-Duff source-in blend, intersect source and destination opacity and keep source colors
• SourceOut, Porter-Duff source-out blend, subtract destination from source opacity and keep source colors
• SourceAtop, Porter-Duff source-atop blend, uses destination opacity, layers source on top and keeps both colors
• DestinationIn, Porter-Duff destination-in blend, intersect source and destination opacity and keep source colors
• DestinationOut, Porter-Duff destination-out blend, subtract destination from source opacity and keep destination colors
• DestinationAtop, Porter-Duff destination-atop blend, uses source opacity, layers destination on top and keeps both colors
• Xor, Porter-Duff xor blend, picks colors from input with highest opacity or none with opacities are equal

Various blends

• Passthrough, pass source color and opacity.

Blurs

Most blur effects are opacity preserving

• ApproximateGaussianBlur, a somewhat faster but less precise implementation of GaussianBlur
• Bloom, a multi-pass bloom/glow effect
• BoxBlur, a simple but fast box blur
• GaussianBlur, a slow but precise Gaussian blur
• HashBlur, a noisy blur effect
• ZoomBlur, a directional blur with a zooming effect

Color

• ChromaticAberration, a chromatic aberration effect based on RGB color separation
• ColorCorrection, corrections for brightness, contrast, saturation and hue
• ColorLookup, Color LUT filter
• ColorMix, filter implementation of OPENRNDR's color matrix mixing
• LumaMap, maps luminosity to two colors
• LumaOpacity, maps luminosity to opacity but retains source color
• LumaThreshold, applies a treshold on the input luminosity and maps to two colors
• Sepia, applies a reddish-brown monochrome tint that imitates an old photograph
• SubtractConstant, subtract a constant color from the source color

Distortion

All distortion effects are opacity preserving

• BlockRepeat - repeats a single configurable block of the source input
• StackRepeat - repeats the source input in a stack fashion
• HorizontalWave - applies a horizontal wave effect on the source input
• VerticalWave - applies a vertical wave effect on the source input
• PerspectivePlane - applies a planar perspective distortion on the source input

Dither

• ADither - a selection of dithering effects
• CMYKHalftone - a configurable CMYK halftoning effect

Edges

• LumaSobel - A Sobel-kernel based luminosity edge detector
• EdgesWork - An edges filter doubling as erosion
• Contour - detects multi-level contours

Grain

• FilmGrain - adds film-like grain to the source input

Shadow

• DropShadow - adds a drop shadow based on the opacity in the input image

Tonemap

• Uncharted2Tonemap - implements the Uncharted2 tonemapper

Transform

• FlipVertically - flips the source input vertically.

Demos

DemoBlur01

source code

DemoCannyEdgeDetector01

source code

DemoDistortLenses01

source code

DemoFluidDistort01

source code