Sunday, December 3, 2023
HomeVisual EffectsRensei's Sketchbook - Actual Time VFX

Rensei’s Sketchbook – Actual Time VFX


That could be a fairly cool concept and your outcomes are superior! :purple_heart:




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Some peeps requested how to do that so here’s a fast breakdown:

To begin with I report some movies of the web site I discussed within the earlier publish. I exploit OBS and crop out the view so solely the sim half is seen.

Then, export frames from the video. I used VLC as a result of that’s what I had and it was fast sufficient for this check. I’d suggest utilizing one thing else if you would like extra choices and extra fps exported. (I really feel like there’s a quite simple approach to do that, or report straight into frames so simply get the thought of what’s taking place and do higher than this :face_with_open_eyes_and_hand_over_mouth: hnnn…)

Depening on the size of your recording you may get couple thousand frames so watch out :person_shrugging:
With all frames exported I take away all utterly clean frames as a result of they’re ineffective anyway.

Subsequent I select the sequence I’d like to make use of and get it into Unity.

I disabled mipmaps and set compression to None. These frames can be eliminated later and never utilized in sport, however I need to course of them in highest high quality

Unity has a really cool instrument referred to as Picture Sequencer, which you could find within the VFX Toolbox preview bundle

After creating a brand new Picture Sequencer asset I import all wanted frames and preview the flipbook
Animated GIF

There may be lots of wasted house on there and I can’t be bothered to crop the sequence frames by hand so I exploit some body processors:
There’s a bunch of them offered, plus it’s straightforward to make customized ones through the use of a customized materials to course of the frames. There are some instance shaders offered (like Blur, Rotate, Adverse or HeightToNormal).
image

Then it’s as straightforward to make use of as some other flipbook ! I used shuriken since I’m working in BiRP atm

It was a enjoyable experiment and the identical course of can be utilized for already made movies or no matter you may get/discover on-line with the proper licensing :wink:



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Sword slash vfx sketch
The VFX half took couple hours, was fairly enjoyable, particularly since I by no means made it earlier than hah. There may be a lot to doooo

Unity GIF

Colors are primarily based on the plasma colourmap, I used it earlier than and I actually prefer it =3=
https://matplotlib.org/secure/tutorials/colours/colormaps.html
image



9 Likes

Some peeps requested for a breakdown for this so right here it’s:

I’ll begin from the start:

  1. Is simply black with some easy slowly scrollng noise. Rotates round it’s Y axis and strikes ahead when emitted. It’s the slowest and disappears first out of the three.
    slash1
  2. The glowyone. I’m utilizing the gradient I discussed earlier than. This one is quicker than the primary one and has an extended lifetime, additionally stops spinning half approach.
    slash2
  3. That is the quickest one and lives the longest. Additionally it doesn’t roate over lifetime. I felt just like the slash wanted some residue up entrance so I added this
    slash3
  • Impression strains or scan strains
    (Wonderful compression) It’s only a quad with polar uv’s and a noise texture scrolling outwards. It’s a Uncooked Picture on Display screen House canvas so I can apply the invert filter on it.
    scanlines0
    I simply realised that it was utterly pointless, as a result of I really wished to maintain the black strains when inverting the color :person_facepalming:
    If I did it proper it will have regarded extra like this. OOPS

  • Invert colors publish processing impact
    It’s a easy customized PP impact. Like, very barebones easy. I simply allow it for 0.07 seconds with the scalines to make a spicy flash.

Shader Code
Shader "Hidden/Customized/Invert"
{
    SubShader
    {
        // No culling or depth
        Cull Off ZWrite Off ZTest At all times
        
        Go
        {
            HLSLPROGRAM
            #pragma vertex VertDefault
            #pragma fragment Frag
            
            #embrace "Packages/com.unity.postprocessing/PostProcessing/Shaders/StdLib.hlsl"
            
            TEXTURE2D_SAMPLER2D(_MainTex, sampler_MainTex);
            
            float4 Frag(VaryingsDefault i) : SV_Target
            {
                float4 shade = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoord);
                shade = 1 - shade;
                return shade;
            }
            ENDHLSL
        }
    }
}
C# code
utilizing System;


namespace UnityEngine.Rendering.PostProcessing
{
    [Serializable]
    [PostProcess(typeof(InvertRenderer), PostProcessEvent.AfterStack, "Custom/Invert")]
    public sealed class Invert : PostProcessEffectSettings
    {
        
    }

    inner sealed class InvertRenderer : PostProcessEffectRenderer<Invert>
    {
        personal Shader m_shader;
        
        public override void Init()
        {
            m_shader = Shader.Discover("Hidden/Customized/Invert");
        }
        
        public override void Render(PostProcessRenderContext context)
        {
            var sheet = context.propertySheets.Get(m_shader);
            
            
            
            context.command.BlitFullscreenTriangle(context.supply, context.vacation spot, sheet, 0);
        }
    }
}

Hopefully that’s sufficient element, it’s a quite simple impact, simply bunch of various components glued collectively :face_exhaling:



8 Likes

Some latest explosion I made whereas making an attempt to get out of the burnout section:

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giphy.gif?cid=790b76110850bfaa40702188b374dbe4d1970dee4b5469af&rid=giphy

Present greater thingie I’m engaged on, an arrow cost and shot

giphy.gif?cid=790b76115c86bda672dbf7361751e7c1d82471e56974e5cb&rid=giphy

giphy.gif?cid=790b76111484673763236b8d493c24005a1f2ca31a26b8fb&rid=giphy



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