$ meson setup build --prefix=/usr
$ ninja -C build
# ninja -C build install

Install pywayfire with pip.

To set shader on view with view-id:

./ipc-scripts/set-view-shader.py <view-id> shaders/<shader>

To unset shader on view with view-id:

./ipc-scripts/unset-view-shader.py <view-id>

To set shader on output with output-name:

./ipc-scripts/set-fs-shader.py <output-name> shaders/<shader>

To unset shader on output with output-name:

./ipc-scripts/unset-fs-shader.py <output-name>

Hints:

View ID can be obtained with wf-info.

Requires ipc plugin to function.