Interpolation-based image scaling

The MPV player user shader for interpolation-based image scaling. Designed for experimental, testing or educational use.

Usage

• If you place this shader in the same folder as your mpv.conf, you can use it with glsl-shaders-append="~~/interpolation_based_image_scaling.glsl".
• The shader is controlled under user configurable section by changing macro values and by directly implementing filter kernel.
• Requires vo=gpu-next.

Notes

• The shader is not optimised for speed.
• Antiringing behaves a bit differently compared with the same technique implemented in separated passes.
• In general, you may expect slightly different results from different implementations of resampling algorithms.
• For linearize and delinearize macros see pl_shader_linearize and pl_shader_delinearize functions in https://github.com/haasn/libplacebo/blob/master/src/shaders/colorspace.c
• In general for sintax of mpv user shaders see https://libplacebo.org/custom-shaders/