Get the "result" of a shader (Filter) and repropose to it ?

[askariwa]

Is it possible to apply a shader (filter) to a sprìte, get the resulting image and "send it again to the shader" , ie apply the filter to the new image ?

I have already asked this question at the Phaser forum (here) but i have got no answer, maybe it can't be done ? 

[xerver]

Yes, this is actually really easy in Pixi.js v3.

 

Filters are applied through their ".applyFilter()" method which lets the shader apply the FBOs however it wants. For example, the bloom filter creates an FBO (renderTarget) then applies a couple different filters in a couple different ways with a couple different blend modes before finally returning its object.

 

There are other examples of filters doing this as well, but this is probably the most complex example.

[askariwa]

Yes, this is actually really easy in Pixi.js v3.

 

Filters are applied through their ".applyFilter()" method which lets the shader apply the FBOs however it wants. For example, the bloom filter creates an FBO (renderTarget) then applies a couple different filters in a couple different ways with a couple different blend modes before finally returning its object.

 

There are other examples of filters doing this as well, but this is probably the most complex example.

 

Thank you very much for your answer (and the good news  ).

I'll go to study the example right away.