Unity中播放带有alpha通道格式为Mp4的视频
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问题:
Unity中实现播放透明的MP4视频时出现黑点
解决办法:
使用Unity自带的shader去除黑点
1:shader代码如下所示
Shader "Unlit/NewUnlitShader" Properties _Color("Color", Color) = (1,1,1,1) //_MainTex ("Albedo (RGB)", 2D) = "white" _AlphaVideo("Alpha Video(R)", 2D) = "white" _Glossiness("Smoothness", Range(0,1)) = 0.5 _Metallic("Metallic", Range(0,1)) = 0.0 SubShader Tags "Queue" = "Transparent" "RenderType" = "Transparent" LOD 200 CGPROGRAM // Physically based Standard lighting model, and enable shadows on all light types #pragma surface surf Standard alpha // Use shader model 3.0 target, to get nicer looking lighting #pragma target 3.0 sampler2D _MainTex; sampler2D _AlphaVideo; struct Input float2 uv_MainTex; float2 uv_AlphaVideo; ; half _Glossiness; half _Metallic; fixed4 _Color; void surf(Input IN, inout SurfaceOutputStandard o) // Albedo comes from a texture tinted by color fixed4 c = tex2D(_MainTex, IN.uv_MainTex) * _Color; fixed4 _alpha = tex2D(_AlphaVideo, IN.uv_AlphaVideo); o.Albedo = c.rgb; // Metallic and smoothness come from slider variables o.Metallic = _Metallic; o.Smoothness = _Glossiness; o.Alpha = _alpha.r; ENDCG FallBack "Diffuse"
2:准备好格式为mp4的视频文件,并且提前下载安装好QuickTime,导入Unity当中,将视频文件由Videoclip改为MovieTexture
3:建立新的Material材质,将编写好的shader使用到材质中去,并将处理好的视频拖入当中
4:建立plane模型,X旋转90度,将建立好的材质拖到plane模型当中去,用代码控制视频的播放
5:控制代码如下所示:
using System.Collections; using System.Collections.Generic; using UnityEngine.UI; using UnityEngine; public class Juasd : MonoBehaviour public MovieTexture moveTex; // Use this for initialization void Start () GetComponent<Renderer>().material.mainTexture = moveTex; moveTex.loop = true; moveTex.Play(); // Update is called once per frame void Update ()
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