Displacement map shaders & misc shaders

[ArTiSTiX]

Quadrilateral Crop

Inverse of a Corner Pin, distort image using 4 points polygon back to corners.
Useful to flatten perspective (tip: resize/crop source to your desired size before moving points for easier configuration).

Example:

Noise shader

A simple pseudo-random white noise shader. Can be useful for adding tiny grain to an image.

Normal Map shader

Based on NormalMap-Online website by @cpetry

Example:

Displacement Map shader (simple)

From a Displacement Map / Normal map, distort image in X and Y (red and green channels of map).
Note:

• Add gaussian blur before/after the normal map shader for better results.
• Add noise for frosted glass effect.

Example:

Displacement Map shader (advanced)

Additonnal effects with displacement for more advanced results:

• Displacement map curve: remap X/Y displacement with linear (same as simple version), quadratic or cubic.
• Blur (with configurable direction)
• Chromatic Aberration
• Colorize
• Map blue (Z) channel to those additional effects.

Example:

Note

Displacement map shaders are duplicated in 2 versions:

Normal: The filter is applied to the background image, and you have to fill the Mask Layer input.
Invert: The filter is applied to the mask layer and you have to fill the background layer.

I was not able to make the swap through a single boolean (i'm no expert in making shaders, particularly in OBS, but it seems compilation does not accept a dynamic reference to a texture...).