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Emissive video texture cheat. How is Cineshader doing it?

Home › Forums › Graphics / Blender › Emissive video texture cheat. How is Cineshader doing it?

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Viewing 7 posts - 1 through 7 (of 7 total)
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  • 2022-05-16 at 6:50 pm #52106
    schit4brainz
    Participant

    Hi everyone.

    Loving learning verge so far! what a cracking bit of software!

    I’m trying to make a video texture emissive, while I know it’s not possible theoretically, there are cheat ways to achieve it i’m sure.

    One thing i’ve been trying is using blurred out SSReflections. But, no matter what I do to my materials adjusting roughness, metallic or spec in Blender, the SSR’s in verge3D are just too clean and look unnatural.
    Does anyone know what i’m doing wrong?
    Has anybody tried SSR and managed to get nice blurred out material reflections?

    my other idea is to somehow pipe the same video texture, or an average colour sample of it through a light in blender (similar to making a projector light) but opened right up so it casts a cheat version of the video screens colour. (similar to the video texture example but with that light matching the video texture colour)
    Anyone have any ideas on how to do that?

    Basically, https://cineshader.com/ manages to do an incredible job of GI, or emissive lighting. I have no idea how they are doing it. I can even see the shadows moving / reacting to the shaders. It’s mindblowingly good. How the hell did they do it?

    Maybe a master Verge3D genius out there can shed some light on it! pun intended!

    2022-05-17 at 12:42 am #52109
    xeon
    Customer

    So, I am not sure what you are really interested in from a standpoint of recreating. The example you provided is not a video so not sure what the point of the example is other than its a reflection and maybe that’s all you are trying to achieve?

    So Part 1 of your question is about the video with emission properties.
    Yes you can do it not sure its the route I would go but I am sure you have your reasons. To do this well, setup your BSDF with a still image taken from your video sequence and setup the emissive properties as you want them. I would suggest driving the emission input with the alpha or the color of the image. In puzzles, swap the material of the image with the video and there ya go.

    As far as reflections. You can use light probes that will do a decent job. But if you want the ultimate control, just reverse out your video as another part of a texture on your floor. Then you can blur it and do all sorts of things without having to worry about SSR.

    Video is costly overhead..you may want to consider image sequences or better yet one image with an animated UV to create the video effect.
    To provide you the ultimate control.

    Xeon
    Route 66 Digital
    Interactive Solutions - https://www.r66d.com
    Tutorials - https://www.xeons3dlab.com

    2022-05-17 at 10:14 am #52130
    schit4brainz
    Participant

    The example provided may not be a video, but the shaders are emitting light in the scene, lighting up the character and the warehouse walls. I want to do the same, but with video instead of a shader.

    The video im using as a texture is pulled from the web, its not costly at all as far as i’m aware. a press play image is clicked and then replaced with a video pulled from online.

    Will lightprobes work with video? Doesn’t it have to be baked in? So, it would only work with a still image? It wouldn’t work with video pulled from the web, nor would it work with image textures in the uploaded file because it can’t update the lightprobe for each frame, unless i’m mistaken?

    Emissive only reacts with bloom, so it’s not going to give me any kind of light casting across other objects in the scene.

    Thanks for your help

    2022-05-17 at 2:22 pm #52133
    xeon
    Customer

    The new info of you using a video from an online source limits your abilities. With that being your constraint you will have to decide if you will use the tools in V3D or custom role your own or write mods to support your efforts. Good luck

    Xeon
    Route 66 Digital
    Interactive Solutions - https://www.r66d.com
    Tutorials - https://www.xeons3dlab.com

    2022-05-17 at 4:23 pm #52140
    xeon
    Customer

    An option if trying to do via puzzles. No additional overhead cost and you can use an linked video source.

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    Xeon
    Route 66 Digital
    Interactive Solutions - https://www.r66d.com
    Tutorials - https://www.xeons3dlab.com

    2022-06-08 at 1:21 pm #52797
    Pascal
    Customer

    Very clever solution how to fake the reflection. Might work in some cases. :good:

    But I recognize the frame-rate drops extremely in Firefox when I use video textures, so I am using it sparingly for now.

    2024-01-26 at 4:06 am #69917
    palumanic
    Participant

    I’ve heard of some creative workarounds for achieving that desired emissive effect. One idea you mentioned about using light in Blender to mimic the video screen’s color is pretty neat. It’s all about experimenting and finding the right balance to get that perfect look.

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