We are about to switch to a new forum software. Until then we have removed the registration on this forum.
Maybe this is already very simple. I am not much of a GLSL coder!
I have a pixel manipulation code running, and the built in P55 blur was too slow so I went into the shaders world.
I tried replacing the built-in filter(BLUR) with the one in the Examples, it is attractive and very fast. But seems to darken my image too much, it eventually dissappears - I think it could be to do with the fact that I am manipulating the pixels in HSB mode and the shader seems to be summing RGB ...
How can I get things working so that the shader behaves exactly the same as filter(BLUR) with HSB pixels?