유니티 - Custom Vertex Stream and Shadergraph/Amplify Shader



유니티 - Custom Vertex Stream and Shadergraph/Amplify Shader

금별 0 122 2019.12.29 23:02

 

 

 

Since few weeks, I saw many questions about ’ Custom Vertex Stream ’ (called CVS here) on Shuriken with Shadergraph/Amplify Shader

First, here a really good post about CVS by Mirza Beig where a lot of things are explains : http://www.mirzabeig.com/tutorials/intro-to-custom-particle-vertex-streams/ 102

I will only tacle how to link CVS and Shadergraph/Amplify Shader!

Here the shader we will use for Shadergraph:

 

Base_Shader


And here the shader we will use for Amplify Shader:

 

Base_Amplify

 

1: UV channel selector, the first important part in the shader
2: RGBA split component, the second important part!
The only difference between the two shadernode editors is the uv channel:
Shadergraph starts at 0
Amplify starts at 1

Let’s go to Shuriken now ! We add a new material with the shader we created in Shuriken renderer.
The setup is the simpliest as possible, only one particle and only the one ’ Custom Data ’ in CVS (we can’t delete the Position!)

 

Shuriken

 

1: Enable CVS and add a Custom1.xyzw data

 

Shuriken_1

 

2: Enable ’ Custom Data ’ module, set the Custom1 to Vector and 4 component

Custom1 is setup like that:
X : Start at 1 and decrease to 0 at midlife
Y : Start at 0 and at midlife go to 1
Z : Const 0
W : Const 0

And here the result you should have:

 

Result_1

 

Let’s describe a bit what happens!

 

Liens


CVS and Custom Data :

- It’s simple, the Custom1 in CVS is the Custom1 in Custom data. You can animate here the XYZW component with const, curve or color.
CVS and Shadergraph/Amplify :

- Near Custom1 in CVS, we can see Unity give us a tip on how to link that in Shadergraph/Amplify with (TEXCOORD0.xyzw). TEXCOORD is our UV channel and the 0 say it’s our first UV channel.
We can resume with this array

Array

 


But what if we have more data to send ? Our best friend become the number near TEXCOORD
Here a case :

 

many


In resume we have:

- TEXCOORDX = UV channel X for Shadergraph and UV channel X+1 for Amplify.
- XYZW = RGBA for Shadergraph and UVWT for Amplify
One particular thing we see with StableRandom.xyzw is the TEXCOORD2.yzw**|**x
Unity wants to say us ’ StableRandom.xyzw starts in TEXCOORD2.yzw and finishes in the next one,TEXCOORD3.x ’


And here we go! We can now make crazy SHEBAM ! POW ! BLOP ! WIIIZZ !
I hope this can help, forgive me my language mistakes, don’t hesitate to correct me to make this a bit clearer or add/remove/correct any informations!

 

 

 

 

 

Another User example

 

image

Using this feature you can make texture panning from curve x if you have UV output Z(W in amplify). It will be one curve for your Z value and panning. I don’t know where you can use it, but anyway…

image
or you can make random texture coordinates using StableRandom

image

Tangent need when you use normal map in the shader.
Put like on this comment if you found out about it for the first time

 

 

One simple way is setting your colors as HDR in shadergraph

 

image

 

and use AgePercent to Lerp between the color

 

image


The only counterpart is if you want 4 different colors over the particule life, you will have to declare 4 colors :


 

image

 

Here the result :

 

test

In few words, each smoothstep provide a [0-1] value to lerp between the different colors.
The smoothstep range is define by [1 / 3 (numberOfSmoothstep)]

- for the first one you have [0 => 0.33]
- the seconde one : [0.33 => 0.33 * 2]
- the last one : [0.33 * 2 => 0.33 * 3]

I hope it’s what you’re looking for in a way!
And here the shader for example (you can see the setup for shuriken in the gif). Sorry, i don’t know how to add commentary in shadergraph… and it’s look like it’s impossible for the moment!

 

https://drive.google.com/file/d/19oafzIyZIg3qzvszjFwKc0z7ZHYOiPUZ/view

 

If someone have a simplier solution to have HDR color over lifetime, you must speak! now! 

 

Comments


번호 포토 분류 제목 글쓴이 날짜 조회
공지 외국 교육 이펙트 튜토리얼 모음(사이트/유튜브/비메오등등..) 댓글+4 금별 2018.05.12 1424
공지 이펙트 추천 사이트/블로그 댓글+5 금별 2018.05.12 1778
106 언리얼4 언리얼4 - 바다 파도 쉐이더 라이브 스트림 튜토리얼 금별 01.24 25
105 언리얼4 언리얼4 튜토리얼 - Explosions for Games (UE4 Particle Tutorial) 금별 01.20 45
104 언리얼4 언리얼4 팁 - 얼음물 유리잔 쉐이더 제작 댓글+1 금별 01.20 82
103 언리얼4 언리얼4 팁 - 회오리 표현 금별 01.20 54
102 언리얼4 [GDC]Stylized Games을 위한 VFX 아트 디렉팅 금별 01.20 28
101 2D Stylized Animated 2D 이펙트: 팁과 트릭 금별 01.20 11
100 언리얼4 Making-of: VFX 고스트리콘 브레이크 포인트 금별 01.20 20
99 언리얼4 언리얼4 팁 - UNREAL 4 TIPS AND TRICKS 금별 2019.12.29 110
열람중 유니티 유니티 - Custom Vertex Stream and Shadergraph/Amplify Shader 금별 2019.12.29 123
97 언리얼4 언리얼4 - 호박 폭발 이펙트 참고 및 노드예제 금별 2019.12.09 234
96 유니티 유니티 쉐이더 팁 - Rime 스타일의 폭포 제작 금별 2019.11.26 175
95 유니티 유니티 이펙트 팁 - 데스스트랜딩 홀로그램 효과 참고해 만들기 금별 2019.11.19 161
94 언리얼4 언리얼4 - 블랜더를 활용한 지형 버텍스 옵셋 이펙트 팁 금별 2019.11.19 106
93 언리얼4 언리얼4 VFX Basics - Creating the scrolling texture with mask setup 금별 2019.10.31 271
92 언리얼4 언리얼4 팁 - Gradient Mapping 금별 2019.10.29 169
91 유니티 유니티 - 스타게이트 효과 참고영상 금별 2019.10.29 162
90 유니티 유니티 - 2d Raymarched Smoke 금별 2019.10.26 91
89 유니티 유니티 이펙트 팁 - 포털제작 금별 2019.10.19 254
88 언리얼4 언리얼4 이펙트 팁 - Rift to R’lyeh FX 금별 2019.10.15 237
87 언리얼4 언리얼4 - 버텍스 옵셋 예제와 노드 금별 2019.09.16 316
86 유니티 유니티 - 포탈이펙트 예제와 제작과정 금별 2019.09.09 533
85 유니티 유니티 - Stylized 폭포 제작하기 금별 2019.09.07 240


Banner
Facebook Twitter GooglePlus KakaoStory NaverBand