I'm trying to do some painting stuff using slab feedback and @capture to texture. The problem is that the alpha channel is always set to 1 before capturing (see the patch in attachment). Is there a way to set the alpha channel of the texture to 0 before capturing?
Otherwise, does someone knows which shader to use to have the same effect that drawing into jit.gl.render using erase_color 0. 0. 0. 0.?
In attachment, a patch and a shader I've create to do the feedback despite the alpha channel problem. I've change the blend mode in order to invert the alpha of my drawing texture.