Dissolve 효과를 주기 위해서는 별도의 텍스쳐가 필요하다
알파 Dissolve 셰이더
순간적으로 밝아진후 게임 오브젝트를 사라지게 한다.알파 값에 의해 오브젝트가 사라진다.
_CutOff 값이 1에서 0으로 변하면 게임오브젝트가 점점 밝아진다.
_CutOff 값이 0이 되면 _Width 값을 감소 시킨다.
_Width 값이 1에서 0으로 변하면 게임오브젝트가 사라진다.
셰이더 소스
//http://qiita.com/kaiware007/items/1d9f37bc8c5892d254ac
Shader "Custom/Dissolve" {
Properties{
_MainColor("Main Color", Color) = (1,1,1,1)
_MainTex("Base (RGB)", 2D) = "white" {}
_Mask("Mask To Dissolve", 2D) = "white" {}
_CutOff("CutOff Range", Range(0,1)) = 0
_Width("Width", Range(0,1)) = 0.001
_ColorIntensity("Intensity", Float) = 1
_Color("Line Color", Color) = (1,1,1,1)
_BumpMap("Normalmap", 2D) = "bump" {}
}
SubShader{
Tags {"Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent"}
LOD 300
Pass{
ZWrite On
ColorMask 0
}
CGPROGRAM
#pragma target 2.0
#include "UnityCG.cginc"
#pragma surface surf Lambert alpha
sampler2D _MainTex;
sampler2D _BumpMap;
sampler2D _Mask;
fixed4 _Color;
fixed4 _MainColor;
fixed _CutOff;
fixed _Width;
fixed _ColorIntensity;
struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
};
void surf(Input IN, inout SurfaceOutput o) {
o.Albedo = tex2D(_MainTex, IN.uv_MainTex) * _MainColor;
o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
fixed a = tex2D(_Mask, IN.uv_MainTex).r;
fixed b = smoothstep(_CutOff, _CutOff + _Width, a);
o.Emission = _Color * b * _ColorIntensity;
fixed b2 = step(a, _CutOff + _Width * 2.0);
o.Alpha = b2;
}
ENDCG
}
Fallback "Diffuse"
}
Shader "Custom/Dissolve" {
Properties{
_MainColor("Main Color", Color) = (1,1,1,1)
_MainTex("Base (RGB)", 2D) = "white" {}
_Mask("Mask To Dissolve", 2D) = "white" {}
_CutOff("CutOff Range", Range(0,1)) = 0
_Width("Width", Range(0,1)) = 0.001
_ColorIntensity("Intensity", Float) = 1
_Color("Line Color", Color) = (1,1,1,1)
_BumpMap("Normalmap", 2D) = "bump" {}
}
SubShader{
Tags {"Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent"}
LOD 300
Pass{
ZWrite On
ColorMask 0
}
CGPROGRAM
#pragma target 2.0
#include "UnityCG.cginc"
#pragma surface surf Lambert alpha
sampler2D _MainTex;
sampler2D _BumpMap;
sampler2D _Mask;
fixed4 _Color;
fixed4 _MainColor;
fixed _CutOff;
fixed _Width;
fixed _ColorIntensity;
struct Input {
float2 uv_MainTex;
float2 uv_BumpMap;
};
void surf(Input IN, inout SurfaceOutput o) {
o.Albedo = tex2D(_MainTex, IN.uv_MainTex) * _MainColor;
o.Normal = UnpackNormal(tex2D(_BumpMap, IN.uv_BumpMap));
fixed a = tex2D(_Mask, IN.uv_MainTex).r;
fixed b = smoothstep(_CutOff, _CutOff + _Width, a);
o.Emission = _Color * b * _ColorIntensity;
fixed b2 = step(a, _CutOff + _Width * 2.0);
o.Alpha = b2;
}
ENDCG
}
Fallback "Diffuse"
}
스크립트 소스
using UnityEngine;
using System.Collections;
public class AlphaDissolveTest : MonoBehaviour {
private Material material = null;
private int _Width = 0;
private int _Cutoff = 0;
void Start () {
material = GetComponentInChildren<Renderer>().material;
_Width = Shader.PropertyToID("_Width");
_Cutoff = Shader.PropertyToID("_CutOff");
if (material != null) {
material.SetFloat (_Cutoff, 1f);
material.SetFloat (_Width, 1f);
StartCoroutine ("ProcDissolve");
}
}
IEnumerator ProcDissolve ()
{
float waitTime = 1f;
yield return new WaitForSeconds(waitTime);
float cutoffTime = 1f;
for (float n = 0f; n <= cutoffTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat(_Cutoff, 1 - n/cutoffTime);
}
float widthTime = 1f;
for (float n = 0f; n <= widthTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat(_Width, 1- n/widthTime);
}
}
}
using System.Collections;
public class AlphaDissolveTest : MonoBehaviour {
private Material material = null;
private int _Width = 0;
private int _Cutoff = 0;
void Start () {
material = GetComponentInChildren<Renderer>().material;
_Width = Shader.PropertyToID("_Width");
_Cutoff = Shader.PropertyToID("_CutOff");
if (material != null) {
material.SetFloat (_Cutoff, 1f);
material.SetFloat (_Width, 1f);
StartCoroutine ("ProcDissolve");
}
}
IEnumerator ProcDissolve ()
{
float waitTime = 1f;
yield return new WaitForSeconds(waitTime);
float cutoffTime = 1f;
for (float n = 0f; n <= cutoffTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat(_Cutoff, 1 - n/cutoffTime);
}
float widthTime = 1f;
for (float n = 0f; n <= widthTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat(_Width, 1- n/widthTime);
}
}
}
clip Dissolve 셰이더
clip 셰이더 명령어로 의해 오브젝트를 사라지게 한다.
셰이더 소스
Shader "Custom/BasicDissolve" {
Properties {
_MainTex ("Texture (RGB)", 2D) = "white" {}
_SliceGuide ("Slice Guide (RGB)", 2D) = "white" {}
_SliceAmount ("Slice Amount", Range(0.0, 1.0)) = 0.5
}
SubShader {
Tags { "RenderType" = "Opaque" }
Cull Off
CGPROGRAM
#pragma surface surf Lambert
struct Input {
float2 uv_MainTex;
float2 uv_SliceGuide;
float _SliceAmount;
};
sampler2D _MainTex;
sampler2D _SliceGuide;
float _SliceAmount;
void surf (Input IN, inout SurfaceOutput o) {
clip(tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount);
o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
}
ENDCG
}
Fallback "Diffuse"
}
Properties {
_MainTex ("Texture (RGB)", 2D) = "white" {}
_SliceGuide ("Slice Guide (RGB)", 2D) = "white" {}
_SliceAmount ("Slice Amount", Range(0.0, 1.0)) = 0.5
}
SubShader {
Tags { "RenderType" = "Opaque" }
Cull Off
CGPROGRAM
#pragma surface surf Lambert
struct Input {
float2 uv_MainTex;
float2 uv_SliceGuide;
float _SliceAmount;
};
sampler2D _MainTex;
sampler2D _SliceGuide;
float _SliceAmount;
void surf (Input IN, inout SurfaceOutput o) {
clip(tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount);
o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
}
ENDCG
}
Fallback "Diffuse"
}
_SliceAmount 값이 커지면(마이너스 값이 되면) 픽셀이 클리핑 된다.
스크립트 소스
using UnityEngine;
using System.Collections;
public class BasicDissoveTest : MonoBehaviour {
private Material material = null;
private int _SliceAmount = 0;
void Start () {
material = GetComponentInChildren<Renderer>().material;
_SliceAmount = Shader.PropertyToID("_SliceAmount");
if(material != null)
StartCoroutine ("ProcDissolve");
}
IEnumerator ProcDissolve ()
{
yield return new WaitForSeconds(2);
//runTime 시간동안 _SliceAmount 값을 변화 시킨다.
float runTime = 3f;
for (float n = 0f; n <= runTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat( _SliceAmount, n/runTime);
}
}
}
using System.Collections;
public class BasicDissoveTest : MonoBehaviour {
private Material material = null;
private int _SliceAmount = 0;
void Start () {
material = GetComponentInChildren<Renderer>().material;
_SliceAmount = Shader.PropertyToID("_SliceAmount");
if(material != null)
StartCoroutine ("ProcDissolve");
}
IEnumerator ProcDissolve ()
{
yield return new WaitForSeconds(2);
//runTime 시간동안 _SliceAmount 값을 변화 시킨다.
float runTime = 3f;
for (float n = 0f; n <= runTime; n += Time.deltaTime)
{
yield return new WaitForSeconds(0.032f); //30fps
material.SetFloat( _SliceAmount, n/runTime);
}
}
}
Edge Clip 셰이더
오브젝트가 사라질때 Edge 표시한다.
셰이더 소스
Shader "Custom/EdgeDissolve" {
Properties {
_MainTex ("Texture (RGB)", 2D) = "white" {}
_SliceGuide ("Slice Guide (RGB)", 2D) = "white" {}
_SliceAmount ("Slice Amount", Range(0.0, 1.0)) = 0.5
_BurnSize ("Burn Size", Range(0.0, 1.0)) = 0.15
_BurnRamp ("Burn Ramp (RGB)", 2D) = "white" {}
}
SubShader {
Tags { "RenderType" = "Opaque" }
Cull Off
CGPROGRAM
//if you're not planning on using shadows, remove "addshadow" for better performance
#pragma surface surf Lambert addshadow
struct Input {
float2 uv_MainTex;
float2 uv_SliceGuide;
float _SliceAmount;
};
sampler2D _MainTex;
sampler2D _SliceGuide;
float _SliceAmount;
sampler2D _BurnRamp;
float _BurnSize;
void surf (Input IN, inout SurfaceOutput o) {
clip(tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount);
o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
half test = tex2D (_SliceGuide, IN.uv_MainTex).rgb - _SliceAmount;
//half test = tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount;
if(test < _BurnSize && _SliceAmount > 0 && _SliceAmount < 1){
o.Emission = tex2D(_BurnRamp, float2(test *(1/_BurnSize), 0));
o.Albedo *= o.Emission;
}
}
ENDCG
}
Fallback "Diffuse"
}
Properties {
_MainTex ("Texture (RGB)", 2D) = "white" {}
_SliceGuide ("Slice Guide (RGB)", 2D) = "white" {}
_SliceAmount ("Slice Amount", Range(0.0, 1.0)) = 0.5
_BurnSize ("Burn Size", Range(0.0, 1.0)) = 0.15
_BurnRamp ("Burn Ramp (RGB)", 2D) = "white" {}
}
SubShader {
Tags { "RenderType" = "Opaque" }
Cull Off
CGPROGRAM
//if you're not planning on using shadows, remove "addshadow" for better performance
#pragma surface surf Lambert addshadow
struct Input {
float2 uv_MainTex;
float2 uv_SliceGuide;
float _SliceAmount;
};
sampler2D _MainTex;
sampler2D _SliceGuide;
float _SliceAmount;
sampler2D _BurnRamp;
float _BurnSize;
void surf (Input IN, inout SurfaceOutput o) {
clip(tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount);
o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;
half test = tex2D (_SliceGuide, IN.uv_MainTex).rgb - _SliceAmount;
//half test = tex2D (_SliceGuide, IN.uv_SliceGuide).rgb - _SliceAmount;
if(test < _BurnSize && _SliceAmount > 0 && _SliceAmount < 1){
o.Emission = tex2D(_BurnRamp, float2(test *(1/_BurnSize), 0));
o.Albedo *= o.Emission;
}
}
ENDCG
}
Fallback "Diffuse"
}
test 값이 _BurnSize 보다 작으면 Edge를 표시한다.
test 값이 _Brunsize 보다 작으면 Edge로 출력되고 마이너스 값이면 픽셀이 출력이 안된다.
Edge를 표시하기 위한 텍스쳐이다.
스크립트는 Clip Disssolve 셰이더와 같다.
유니티 프로젝트 파일 : dissole_test.zip
참고)
http://www.codeavarice.com/dev-blog/tutorial-burning-edges-dissolve-shader-in-unityhttp://qiita.com/kaiware007/items/1d9f37bc8c5892d254ac
셰이더 명령어 clip
clip 명령어는 hlsl에서도 지원되는 명령어이다. 사용법은 다음과 같다.clip(x)
x 값이 0보다 적으면 픽셀을 그리지 않는다.
사용법
clip( Input.Color.A < 0.1f ? -1:1 )
Fixed function(고정 함수)의 AlphaTest 또는 프로그래머블에 해당하 요소인 clip()은 모바일에서 다른 퍼포먼스가 나온다.
iOS 및 일부 Android 장치의 PowerVR GPU에서 알파 테스트는 고가이다.