Jump to content

blur top & bottom of screen


Rick
 Share

Recommended Posts

precision mediump float;
uniform sampler2D vTex;
varying vec2 vCoord;
const float step_w = 0.0015625;
const float step_h = 0.0027778;
vec3 blur()
{
   float y = vCoord.t < 0.4 ? vCoord.t : 1.0 - vCoord.t;
   float dist = 8.0 - 20.0 * y;

   vec3 acc = vec3(0.0, 0.0, 0.0);
   for (float y=-2.0; y<=2.0; ++y)
   {
    for (float x=-2.0; x<=2.0; ++x)
    {
	    acc += texture2D(vTex, vec2(vCoord.x + dist * x * step_w, vCoord.y + 0.5 * dist * y * step_h)).bgr;
    }
   }
   return acc / 25.0;
}
void main(void)
{
   vec3 col;
   if (vCoord.t >= 0.4 && vCoord.t <= 0.6)
    col = texture2D(vTex, vCoord).bgr;
   else
    col = blur();
   gl_FragColor.a = 1.0;
   gl_FragColor.rgb = col;
}

The code above is faking tilt shift its from this website: http://kodemongki.blogspot.com/2011/06/kameraku-custom-shader-effects-example.html

 

and this topic should help also.

http://stackoverflow.com/questions/4579020/how-do-i-use-a-glsl-shader-to-apply-a-radial-blur-to-an-entire-scene

  • Upvote 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...