ShaderJoy —— 简单的粒子雨特效【GLSL】

效果图

粒子雨效果

完整代码和注释

  

   

    

     

    
    

     

      #define PI 3.14159
     
    
   

    

     

    
    

     

      #define TAU 6.28318
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      #iUniform float A = 55. in {0., 300.}
     
    
   

    

     

    
    

     

      #iUniform float B = 35. in {0., 300.}
     
    
   

    

     

    
    

     

      #iUniform float C = .25 in {0., 1.}
     
    
   

    

     

    
    

     

      #iUniform float D = 64. in {0., 200.}
     
    
   

    

     

    
    

     

      #iUniform float E = 5. in {0., 20.}
     
    
   

    

     

    
    

     

      #iUniform float F = .4 in {0., 1.}
     
    
   

    

     

    
    

     

      void mainImage( out vec4 fragColor, in vec2 fragCoord )
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     

          vec2 uv = (fragCoord.xy - 0.5 * iResolution.xy) / iResolution.y;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
    if (iMouse.z > 0.5)
     
    
   

    

     

    
    

     

              uv.y = 1.0 - uv.y;                  ///< 垂直翻转
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

          uv.x = uv.x * D;                        ///< 划分水平间隔，控制雨滴的个数
     
    
   

    

     

    
    

     
    float dx = fract(uv.x);                 ///< 每个间隔内的坐标
     
    
   

    

     

    
    

     

          uv.x = floor(uv.x);                     ///&
     
    
  
 

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原文链接：panda1234lee.blog.csdn.net/article/details/113745285