X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=shaders%2Fblitblur.fs;h=21209c5f9023ce5fac1a161567542cb2205eb432;hb=eff8b75f1a00169d7666c2adf27b588e278c19d2;hp=eac828e5e03b700127611dac7160d1235cbd5f00;hpb=75703291fbf045008a3b1ebb20fc46a2617b6b3b;p=carveJwlIkooP6JGAAIwe30JlM.git

diff --git a/shaders/blitblur.fs b/shaders/blitblur.fs
index eac828e..21209c5 100644
--- a/shaders/blitblur.fs
+++ b/shaders/blitblur.fs
@@ -1,10 +1,13 @@
 out vec4 FragColor;
 uniform sampler2D uTexMain;
+uniform sampler2D uTexMotion;
+uniform float uBlurStrength;
+uniform vec2 uOverrideDir;
+uniform vec2 uClampUv;
 
 in vec2 aUv;
 
-vec2 rand_hash22( vec2 p )
-{
+vec2 rand_hash22( vec2 p ){
    vec3 p3 = fract(vec3(p.xyx) * 213.8976123);
    p3 += dot(p3, p3.yzx+19.19);
    return fract(vec2((p3.x + p3.y)*p3.z, (p3.x+p3.z)*p3.y));
@@ -12,10 +15,17 @@ vec2 rand_hash22( vec2 p )
 
 void main()
 {
-   vec2 voffset = rand_hash22( aUv );
+   vec2 vuv = aUv; 
+
+   vec2 vrand = rand_hash22( vuv ) * 2.0 - vec2(1.0);
+   vec2 vrand1 = rand_hash22( vrand ) * 2.0 - vec2(1.0);
    
-   float bamt = abs(aUv.x-0.5)*2.0;
-   bamt = pow(bamt,4.0)*0.05;
+   vec2 vdir = texture( uTexMotion, vuv ).xy * uBlurStrength + uOverrideDir;
+
+   vec4 vcolour0 = texture( uTexMain, min(vuv + vdir*vrand.x,uClampUv) );
+   vec4 vcolour1 = texture( uTexMain, min(vuv + vdir*vrand.y,uClampUv) );
+   vec4 vcolour2 = texture( uTexMain, min(vuv + vdir*vrand1.x,uClampUv) );
+   vec4 vcolour3 = texture( uTexMain, min(vuv + vdir*vrand1.y,uClampUv) );
 
-   FragColor = texture( uTexMain, aUv + voffset*bamt );
+   FragColor = ( vcolour0 + vcolour1 + vcolour2 + vcolour3 ) * 0.25;
 }