22 files changed, 245 insertions, 914 deletions

diff --git a/assets/shaders/Mandel.frag.glsl b/assets/shaders/Mandel.frag.glsl
index 6465899d..62be76b9 100644
--- a/assets/shaders/Mandel.frag.glsl
+++ b/assets/shaders/Mandel.frag.glsl
@@ -4,15 +4,18 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 
 void main(void)
 {
     vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
     p.x *= u_resolution.x/u_resolution.y;
 
-    float zoo = .62+.38*sin(.1*u_time);
-    float coa = cos( 0.1*(1.0-zoo)*u_time );
-    float sia = sin( 0.1*(1.0-zoo)*u_time );
+        float time = u_time * u_speed;
+
+    float zoo = .62+.38*sin(.1*time);
+    float coa = cos( 0.1*(1.0-zoo)*time );
+    float sia = sin( 0.1*(1.0-zoo)*time );
     zoo = pow( zoo,8.0);
     vec2 xy = vec2( p.x*coa-p.y*sia, p.x*sia+p.y*coa);
     vec2 cc = vec2(-.745,.186) + xy*zoo;
diff --git a/assets/shaders/ReliefTunnel.frag.glsl b/assets/shaders/ReliefTunnel.frag.glsl
index cee707db..5bd727cf 100644
--- a/assets/shaders/ReliefTunnel.frag.glsl
+++ b/assets/shaders/ReliefTunnel.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -11,8 +12,10 @@ void main(void)
     vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
     vec2 uv;
 
+        float time = u_time * u_speed;
+
     float r = sqrt( dot(p,p) );
-    float a = atan(p.y,p.x) + 0.5*sin(0.5*r-0.5*u_time);
+    float a = atan(p.y,p.x) + 0.5*sin(0.5*r-0.5*time);
 
     float s = 0.5 + 0.5*cos(7.0*a);
     s = smoothstep(0.0,1.0,s);
@@ -20,7 +23,7 @@ void main(void)
     s = smoothstep(0.0,1.0,s);
     s = smoothstep(0.0,1.0,s);
 
-    uv.x = u_time + 1.0/( r + .2*s);
+    uv.x = time + 1.0/( r + .2*s);
     uv.y = 3.0*a/3.1416;
 
     float w = (0.5 + 0.5*s)*r*r;
diff --git a/assets/shaders/SquareTunnel.frag.glsl b/assets/shaders/SquareTunnel.frag.glsl
index 51ef7b7c..1298a03a 100644
--- a/assets/shaders/SquareTunnel.frag.glsl
+++ b/assets/shaders/SquareTunnel.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -12,7 +13,7 @@ void main(void)
     vec2 uv;
 
     float r = pow( pow(p.x*p.x,16.0) + pow(p.y*p.y,16.0), 1.0/32.0 );
-    uv.x = .5*u_time + 0.5/r;
+    uv.x = 0.5*u_time*u_speed + 0.5/r;
     uv.y = 1.0*atan(p.y,p.x)/3.1416;
 
     vec3 col =  texture2D(u_tex0,uv).xyz;
diff --git a/assets/shaders/Star.frag.glsl b/assets/shaders/Star.frag.glsl
index f63fe605..f61f43c9 100644
--- a/assets/shaders/Star.frag.glsl
+++ b/assets/shaders/Star.frag.glsl
@@ -3,6 +3,7 @@ precision highp float;
 #endif
 
 uniform float u_time;
+uniform float u_speed;
 uniform vec2 u_resolution;
 uniform sampler2D u_tex0;
 
@@ -10,17 +11,19 @@ void main(void)
 {
     vec2 uv;
 
+        float time = u_time * u_speed;
+
     vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
     float a = atan(p.y,p.x);
     float r = sqrt(dot(p,p));
-    float s = r * (1.0+0.8*cos(u_time*1.0));
+    float s = r * (1.0+0.8*cos(time*1.0));
 
-    uv.x =          .02*p.y+.03*cos(-u_time+a*3.0)/s;
-    uv.y = .1*u_time +.02*p.x+.03*sin(-u_time+a*3.0)/s;
+    uv.x =          .02*p.y+.03*cos(-time+a*3.0)/s;
+    uv.y = .1*time +.02*p.x+.03*sin(-time+a*3.0)/s;
 
     float w = .9 + pow(max(1.5-r,0.0),4.0);
 
-    w*=0.6+0.4*cos(u_time+3.0*a);
+    w*=0.6+0.4*cos(time+3.0*a);
 
     vec3 col =  texture2D(u_tex0,uv).xyz;
 
diff --git a/assets/shaders/Tunnel.frag.glsl b/assets/shaders/Tunnel.frag.glsl
index 9deb52fb..def28e2e 100644
--- a/assets/shaders/Tunnel.frag.glsl
+++ b/assets/shaders/Tunnel.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -14,7 +15,7 @@ void main(void)
     float a = atan(p.y,p.x);
     float r = sqrt(dot(p,p));
 
-    uv.x = .75*u_time+.1/r;
+    uv.x = .75*u_time*u_speed + .1/r;
     uv.y = a/3.1416;
 
     vec3 col =  texture2D(u_tex0,uv).xyz;
diff --git a/assets/shaders/Twist.frag.glsl b/assets/shaders/Twist.frag.glsl
index b7477747..ab66cdae 100644
--- a/assets/shaders/Twist.frag.glsl
+++ b/assets/shaders/Twist.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -14,8 +15,10 @@ void main(void)
     float a = atan(p.y,p.x);
     float r = sqrt(dot(p,p));
 
-    uv.x = r - .25*u_time;
-    uv.y = cos(a*5.0 + 2.0*sin(u_time+7.0*r)) ;
+        float time = u_time * u_speed;
+
+    uv.x = r - .25*time;
+    uv.y = cos(a*5.0 + 2.0*sin(time+7.0*r)) ;
 
     vec3 col =  (.5+.5*uv.y)*texture2D(u_tex0,uv).xyz;
 
diff --git a/assets/shaders/ZInvert.frag.glsl b/assets/shaders/ZInvert.frag.glsl
index b1fd1748..1566b881 100644
--- a/assets/shaders/ZInvert.frag.glsl
+++ b/assets/shaders/ZInvert.frag.glsl
@@ -4,6 +4,7 @@ precision highp float;
 
 uniform vec2 u_resolution;
 uniform float u_time;
+uniform float u_speed;
 uniform sampler2D u_tex0;
 
 void main(void)
@@ -11,11 +12,13 @@ void main(void)
     vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
     vec2 uv;
 
+        float time = u_time * u_speed;
+
     float a = atan(p.y,p.x);
     float r = sqrt(dot(p,p));
 
-    uv.x = cos(0.6+u_time) + cos(cos(1.2+u_time)+a)/r;
-    uv.y = cos(0.3+u_time) + sin(cos(2.0+u_time)+a)/r;
+    uv.x = cos(0.6+time) + cos(cos(1.2+time)+a)/r;
+    uv.y = cos(0.3+time) + sin(cos(2.0+time)+a)/r;