Shader 屏幕后期特效 Shake(震屏)&Wave(波纹)
震屏效果
Shader：
//////////////////////////////////////////// ///// CameraPlay - by VETASOFT 2017 ///// //////////////////////////////////////////// Shader "CameraPlay/Shake" { Properties { _MainTex ("Base (RGB)", 2D) = "white" {} _TimeX ("Time", Range(0.0, 1.0)) = 1.0 _ScreenResolution ("_ScreenResolution", Vector) = (0.,0.,0.,0.) } SubShader { Pass { ZTest Always CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma fragmentoption ARB_precision_hint_fastest #pragma target 3.0 #pragma glsl #include "UnityCG.cginc" uniform sampler2D _MainTex; uniform float _TimeX; uniform float _Value; uniform float _Value2; uniform float _Value3; uniform float4 _ScreenResolution; struct appdata_t { float4 vertex : POSITION; float4 color : COLOR; float2 texcoord : TEXCOORD0; }; struct v2f { float2 texcoord : TEXCOORD0; float4 vertex : SV_POSITION; float4 color : COLOR; }; v2f vert(appdata_t IN) { v2f OUT; OUT.vertex = UnityObjectToClipPos(IN.vertex); OUT.texcoord = IN.texcoord; OUT.color = IN.color; return OUT; } float nrand(float2 n) { return frac(sin(dot(n.xy, float2(12.9898, 78.233)))* 43758.5453); } float4 frag (v2f i) : COLOR { float2 uv = i.texcoord.xy; float t = float(int(_TimeX * _Value)); float2 suv = float2(0,0); suv.x = uv.x + _Value2 * nrand(t); suv.y = uv.y + _Value3 * nrand(t + 23.0); suv.x -=_Value2/2; suv.y -=_Value3/2; float3 col = tex2D(_MainTex,suv).rgb; return float4(col,1.0); } ENDCG } } }
Controller：
//////////////////////////////////////////// ///// CameraPlay - by VETASOFT 2017 ///// //////////////////////////////////////////// using UnityEngine; public class ShakeController : MonoBehaviour { [HideInInspector] public Shader m_shader; private float m_time = 1.0f; private Vector4 m_screenResolution; private Material m_material; [HideInInspector] public float m_value = 0.5f; [HideInInspector] public float m_size = 1f; [HideInInspector] public float m_duration = 1f; [HideInInspector] private float m_timer = 1f; [HideInInspector] public float m_speed = 15f; Material material { get { if (m_material == null) { m_material = new Material(m_shader); m_material.hideFlags = HideFlags.HideAndDontSave; } return m_material; } } void Awake() { m_value = 0; m_timer = 0; m_shader = Shader.Find("CameraPlay/Shake"); if (!SystemInfo.supportsImageEffects) { enabled = false; Debug.Log("手机不支持后处理..."); return; } m_duration = 0.2f; m_speed = 30; m_size = 1; } // Start Animation void OnEnable() { m_value = 0; m_timer = 0; } void OnRenderImage(RenderTexture sourceTexture, RenderTexture destTexture) { if (m_shader != null) { m_time += Time.deltaTime; if (m_time > 100) m_time = 0; material.SetFloat("_TimeX", m_time); material.SetFloat("_Value", m_speed); material.SetFloat("_Value2", m_size * 0.008f); material.SetFloat("_Value3", m_size * 0.008f); material.SetVector("_ScreenResolution", new Vector4(sourceTexture.width, sourceTexture.height, 0.0f, 0.0f)); Graphics.Blit(sourceTexture, destTexture, material); } else { Graphics.Blit(sourceTexture, destTexture); } } void Update() { m_timer += Time.deltaTime * (1 / m_duration); if (m_timer > 1.1f) /*Object.Destroy(this);*/ this.enabled = false; } void OnDisable() { if (m_material) { DestroyImmediate(m_material); } } }
使用方法：
1.Shader和Controller拖进项目。Shader还要丢到Edit - Project Settings -Graphics 的Always included Shaders 中
2.摄像机上挂载对应脚本，控制脚本的Enable属性即可
杂谈：
Shader控制震屏比animation控制更简单，而且不易出错
波纹效果
Shader：
//////////////////////////////////////////// ///// CameraPlay - by VETASOFT 2017 ///// //////////////////////////////////////////// Shader "CameraPlay/ShockWave" { Properties { _MainTex("Base (RGB)", 2D) = "white" {} _TimeX("Time", Range(0.0, 1.0)) = 1.0 _ScreenResolution("_ScreenResolution", Vector) = (0.,0.,0.,0.) } SubShader { Pass { ZTest Always CGPROGRAM #pragma vertex vert #pragma fragment frag //#pragma fragmentoption ARB_precision_hint_fastest #pragma target 3.0 //#pragma glsl #include "UnityCG.cginc" uniform sampler2D _MainTex; uniform float _TimeX; uniform float _Value; uniform float _Value2; uniform float _Value3; uniform float _Value4; uniform float4 _ScreenResolution; uniform float2 _MainTex_TexelSize; struct appdata_t { float4 vertex : POSITION; float4 color : COLOR; float2 texcoord : TEXCOORD0; }; struct v2f { float2 texcoord : TEXCOORD0; float4 vertex : SV_POSITION; float4 color : COLOR; }; v2f vert(appdata_t IN) { v2f OUT; OUT.vertex = UnityObjectToClipPos(IN.vertex); OUT.texcoord = IN.texcoord; OUT.color = IN.color; return OUT; } float4 frag(v2f i) : COLOR { float2 uv = i.texcoord.xy; float2 uv2 = uv; #if UNITY_UV_STARTS_AT_TOP if (_MainTex_TexelSize.y < 0) uv.y = 1 - uv.y; #endif float Dist = distance(uv, float2(_Value, _Value2)); float Diff = (Dist - _Value3); float v = (1.0 - pow(abs(Diff * 10.0), 0.8)); float vt = v * 0.02 * _Value4; vt = saturate(vt); uv2.x = uv2.x - vt; uv2.y = uv2.y - vt; float4 Color = tex2D(_MainTex, uv2); Color.rgb += float3(vt, vt, vt); return Color; } ENDCG } } }
Controller：
/*************************************** Editor: Tason Version: v1.0 Last Edit Date: 2018-XX-XX Tel: 328791554@qq.com Function Doc: ***************************************/ using UnityEngine; public class WaveController : MonoBehaviour { [HideInInspector] public Shader m_shader; private float m_time = 1.0f; private Vector4 m_screenResolution; private Material m_material; [HideInInspector] public float m_posX = 0.5f; [HideInInspector] public float m_posY = 0.5f; [HideInInspector] public float m_value = 0.5f; [HideInInspector] public float m_size = 1f; [HideInInspector] public float m_duration = 1f; [HideInInspector] private float m_timer = 1f; Material material { get { if (m_material == null) { m_material = new Material(m_shader); m_material.hideFlags = HideFlags.HideAndDontSave; } return m_material; } } void Awake() { m_value = 0; m_timer = 0; m_shader = Shader.Find("CameraPlay/ShockWave"); if (!SystemInfo.supportsImageEffects) { enabled = false; Debug.Log("手机不支持后处理..."); return; } m_posX = 0.5f; m_posY = 0.5f; m_duration = 1.5f * 2; m_size = 1; } void OnRenderImage(RenderTexture sourceTexture, RenderTexture destTexture) { if (m_shader != null) { m_time += Time.deltaTime; if (m_time > 100) m_time = 0; material.SetFloat("_TimeX", m_time); material.SetFloat("_Value", m_posX); material.SetFloat("_Value2", m_posY); material.SetFloat("_Value3", m_value); material.SetFloat("_Value4", m_size); material.SetVector("_ScreenResolution", new Vector4(sourceTexture.width, sourceTexture.height, 0.0f, 0.0f)); Graphics.Blit(sourceTexture, destTexture, material); } else { Graphics.Blit(sourceTexture, destTexture); } } void OnEnable() { m_value = 0; m_timer = 0; } private void Update() { m_timer += Time.deltaTime * (1 / m_duration); if (m_timer > 1.1f) //Object.Destroy(this); this.enabled = false; m_value = m_timer; } void OnDisable() { if (m_material) { DestroyImmediate(m_material); } } }
使用方法同“震屏”（同上）
资源链接：
链接：https://pan.baidu.com/s/1ZcSskWxi3wMgYOU9rg4o-g 密码：vzfn
修改：
1.Ondisable 中注释掉 DestroyImmediate() 函数！不需要销毁材质！
