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    [ANSWERED] Flickering candle lighting effect

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    • peuclid
      peuclid last edited by Woland

      I'm wondering if anyone has made a gl shader or worked out a simple way to make an image appear like it is in flickering flame light?

      I did some playing with colorizer, video fader and wave generator to make it look like yellow/orange hues were getting brighter and dimmer, but I couldn't get it to look like a decent flicker with the sudden random changes in brightness. It changed too consistently. I'm sure I could add more randomness to it, but thought I'd see if someone has already done this.

      It seems like it could be done in a single GL shader but I couldn't seem to find a good match out there and I haven't spent enough time learning about them to write it myself yet. If I have some time, I might try, but thought I'd see if something like that already exists, or if there's a simple Izzy way to do it

      I don't need the actual flame in the video, just the lighting effect.

      Thanks,

      Bernie

      Bernie Bernstein
      MacBook Pro (13-inch M1 2020) 16GB, MacOS Monterey- Izzy 3.1.1 (ARM)
      Based in Newton, MA USA

      DusX 1 Reply Last reply Reply Quote 0
      • DusX
        DusX Tech Staff @peuclid last edited by

        @peuclid

        I haven't done this myself but I suspect the 3D particle actor could output a series of particle shapes and modify their location, color and size in such a way to make for a nice flame... then rendering this out to a virtual stage and applying Motion Blur (or other effects) might add to the realism.

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        • Woland
          Woland Tech Staff @DusX last edited by

          @dusx said:

          I suspect the 3D particle actor could output a series of particle shapes and modify their location, color and size in such a way to make for a nice flame

           But peuclid wants just the lighting effect, not an actual flame.

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          • DusX
            DusX Tech Staff @Woland last edited by

            @woland said:

            just the lighting effect, not an actual flame

            perhaps scaling this up and adding perspective with Izzymap would yield a good affect.
            I often use video overlays for lighting effects,  I have many from Rampant, but don't know of any that would simulate candle light.

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            • CitizenJoe
              CitizenJoe last edited by

              I was going to say, I would use a video overlay as well. Play with the blend modes.

              Cheers,

              Hugh

              Hugh in Winnipeg - All test machines, Win10/11 Pro, 64 bit, OS SSD and separate data SSD.
              Dell 7560, i9 11950H, 64 gigs, NVIDIA RTX A4000 w/8 GB GDDR6

              peuclid 1 Reply Last reply Reply Quote 0
              • peuclid
                peuclid @CitizenJoe last edited by

                @CitizenJoe @DusX @Woland 

                These are some great ideas. I really like that suggestion from @CitizenJoe of making a video overlay. I can just make a video of a white wall being lit up by a flickering flame and overlay that on the video. That seems like the simplest (if I can make a decent film) and probably uses the least cpu/gpu.of making a video overlay. I can just make a video of a white wall being lit up by a flickering flame and overlay that on the video. That seems like the simplest (if I can make a decent film) and probably uses the least cpu/gpu.

                Thanks for the suggestion, I'll give that a try.

                Bernie Bernstein
                MacBook Pro (13-inch M1 2020) 16GB, MacOS Monterey- Izzy 3.1.1 (ARM)
                Based in Newton, MA USA

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