garageCube

[Tobias Fellmann]

Hey Together,

I notice a that when I make a slider with a line there is a strange behavior that the lower byte is 255 and only the higher byte moves. This happens when I change the Start/End of the line.
This behaivor is not seen when the opacity is changed or with the geneator gradiant.
The Video Output was set to PF_F32_RGBA.
Here's a video of it.
https://youtu.be/40aB8SdGb4E


I also tried to create a slider with a ISF/WebGL it behaves also strange. https://editor.isf.video/shaders/3124
I use the ficture for the Position of a Motor, i have not tested it with the motor jet.

Thanks for tips.

[mad-matt]

So you're using the "filtering" option in the fixture so it makes an average color value over a certain amount of pixels in the fixture rectangle. If the number of pixels sampled in the rectangle is 64 (box filter 8x8), your resolution is 1/64, so you have 6 bits definition (if your pixels are either full black or full white). So you will never have values in the lower 10 bits of a 16 bits value. That's why. That's not a bug. You would need a box filter of size 256x256 to have a definition of 16 bits in this case. That would not be good for performances. The use you make is interesting but that's not the way you should feed your DMX fixtures.