Multichannel morphological functions? why just single channel.

[vade]

Hey @patriciogonzalezvivo :)

Questions about the implementation of Dilate and Erode, im curious:

#define DILATION_SAMPLE_FNC(TEX, UV) SAMPLER_FNC(TEX, UV).r

Why is DILATION_SAMPLE_FNC returning a single channel?

How should we use this for RGB(a) images, or is the intention only for single channel mask like images?

[patriciogonzalezvivo]

Hi @vade traditionally dilate/erode are morphological operations on masks. so that macro is there to let you choose what channel to use... if you are interested on expanding the alpha of a RGBA image I recomend you using https://lygia.xyz/morphological/alphaFill

[vade]

Im not, im interested in expanding all 4 channels :)

[patriciogonzalezvivo]

Have you tried changing

#define DILATION_TYPE vec4
#define DILATION_SAMPLE_FNC(TEX, UV) SAMPLER_FNC(TEX, UV)

???

[vade]

I did, theres some assumptions i believe inside the gather loop - all good, i figured the perspective was mask images!