From 6321075d93044c6747682a8e7280b5996da7ec52 Mon Sep 17 00:00:00 2001
From: hwc487
Date: Thu, 2 Feb 2012 11:57:58 -0800
Subject: added some additional shaders

---
 assets/shaders/Deform.frag.glsl       | 29 ++++++++++++++++++
 assets/shaders/Fly.frag.glsl          | 23 +++++++++++++++
 assets/shaders/ReliefTunnel.frag.glsl | 35 ++++++++++++++++++++++
 assets/shaders/SquareTunnel.frag.glsl | 21 +++++++++++++
 assets/shaders/Star.frag.glsl         | 28 ++++++++++++++++++
 assets/shaders/Water.frag.glsl        | 55 +++++++++++++++++++++++++++++++++++
 assets/shaders/ZInvert.frag.glsl      | 23 +++++++++++++++
 7 files changed, 214 insertions(+)
 create mode 100644 assets/shaders/Deform.frag.glsl
 create mode 100644 assets/shaders/Fly.frag.glsl
 create mode 100644 assets/shaders/ReliefTunnel.frag.glsl
 create mode 100644 assets/shaders/SquareTunnel.frag.glsl
 create mode 100644 assets/shaders/Star.frag.glsl
 create mode 100644 assets/shaders/Water.frag.glsl
 create mode 100644 assets/shaders/ZInvert.frag.glsl

(limited to 'assets/shaders')

diff --git a/assets/shaders/Deform.frag.glsl b/assets/shaders/Deform.frag.glsl
new file mode 100644
index 00000000..1dbe45a0
--- /dev/null
+++ b/assets/shaders/Deform.frag.glsl
@@ -0,0 +1,29 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform float u_time;
+uniform vec2 u_resolution;
+//uniform vec4 mouse;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
+    //vec2 m = -1.0 + 2.0 * mouse.xy / u_resolution.xy;
+	vec2 m = vec2(-.8, .8);
+
+    float a1 = atan(p.y-m.y,p.x-m.x);
+    float r1 = sqrt(dot(p-m,p-m));
+    float a2 = atan(p.y+m.y,p.x+m.x);
+    float r2 = sqrt(dot(p+m,p+m));
+
+    vec2 uv;
+    uv.x = 0.2*u_time + (r1-r2)*0.25;
+    uv.y = sin(2.0*(a1-a2));
+
+    float w = r1*r2*0.8;
+    vec3 col = texture2D(u_tex0,uv).xyz;
+
+    gl_FragColor = vec4(col/(.1+w),1.0);
+}
\ No newline at end of file
diff --git a/assets/shaders/Fly.frag.glsl b/assets/shaders/Fly.frag.glsl
new file mode 100644
index 00000000..f99b5ab8
--- /dev/null
+++ b/assets/shaders/Fly.frag.glsl
@@ -0,0 +1,23 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform vec2 u_resolution;
+uniform float u_time;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
+    vec2 uv;
+
+    float an = u_time*.25;
+
+    float x = p.x*cos(an)-p.y*sin(an);
+    float y = p.x*sin(an)+p.y*cos(an);
+     
+    uv.x = .25*x/abs(y);
+    uv.y = .20*u_time + .25/abs(y);
+
+    gl_FragColor = vec4(texture2D(u_tex0,uv).xyz * y*y, 1.0);
+}
diff --git a/assets/shaders/ReliefTunnel.frag.glsl b/assets/shaders/ReliefTunnel.frag.glsl
new file mode 100644
index 00000000..cee707db
--- /dev/null
+++ b/assets/shaders/ReliefTunnel.frag.glsl
@@ -0,0 +1,35 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform vec2 u_resolution;
+uniform float u_time;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
+    vec2 uv;
+
+    float r = sqrt( dot(p,p) );
+    float a = atan(p.y,p.x) + 0.5*sin(0.5*r-0.5*u_time);
+
+    float s = 0.5 + 0.5*cos(7.0*a);
+    s = smoothstep(0.0,1.0,s);
+    s = smoothstep(0.0,1.0,s);
+    s = smoothstep(0.0,1.0,s);
+    s = smoothstep(0.0,1.0,s);
+
+    uv.x = u_time + 1.0/( r + .2*s);
+    uv.y = 3.0*a/3.1416;
+
+    float w = (0.5 + 0.5*s)*r*r;
+
+    vec3 col = texture2D(u_tex0,uv).xyz;
+
+    float ao = 0.5 + 0.5*cos(7.0*a);
+    ao = smoothstep(0.0,0.4,ao)-smoothstep(0.4,0.7,ao);
+    ao = 1.0-0.5*ao*r;
+
+    gl_FragColor = vec4(col*w*ao,1.0);
+}
diff --git a/assets/shaders/SquareTunnel.frag.glsl b/assets/shaders/SquareTunnel.frag.glsl
new file mode 100644
index 00000000..51ef7b7c
--- /dev/null
+++ b/assets/shaders/SquareTunnel.frag.glsl
@@ -0,0 +1,21 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform vec2 u_resolution;
+uniform float u_time;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
+    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.y = 1.0*atan(p.y,p.x)/3.1416;
+
+    vec3 col =  texture2D(u_tex0,uv).xyz;
+
+    gl_FragColor = vec4(col*r*r*r,1.0);
+}
diff --git a/assets/shaders/Star.frag.glsl b/assets/shaders/Star.frag.glsl
new file mode 100644
index 00000000..f63fe605
--- /dev/null
+++ b/assets/shaders/Star.frag.glsl
@@ -0,0 +1,28 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform float u_time;
+uniform vec2 u_resolution;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 uv;
+
+    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));
+
+    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;
+
+    float w = .9 + pow(max(1.5-r,0.0),4.0);
+
+    w*=0.6+0.4*cos(u_time+3.0*a);
+
+    vec3 col =  texture2D(u_tex0,uv).xyz;
+
+    gl_FragColor = vec4(col*w,1.0);
+}
\ No newline at end of file
diff --git a/assets/shaders/Water.frag.glsl b/assets/shaders/Water.frag.glsl
new file mode 100644
index 00000000..5b71a658
--- /dev/null
+++ b/assets/shaders/Water.frag.glsl
@@ -0,0 +1,55 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform sampler2D u_tex0;
+uniform float u_time;
+uniform vec2 u_resolution;
+
+const float speedx = 1./ 0.1;
+const float speedy = 1./ .01;
+const float speedr = 1./ 0.01;
+const float delta = 20.;
+const float intence = 10.;
+const int dif = 7;
+
+float col(vec2 coord)
+{
+  float delta_theta = 3.1415926535897932 / float(dif);
+  float col = 0.;
+  float theta = 0.;
+  theta = u_time/200.;
+
+  coord.x += u_time/speedx;
+  coord.y += u_time/speedy;
+  for (int i = 0; i < dif; i++)
+  {
+    coord.x += u_time/speedr;
+    theta = theta + delta_theta;
+    col = col + cos( (coord.x*cos(theta) - coord.y*sin(theta))*20. );
+  }
+
+  return cos(col);
+}
+
+void main(void)
+{
+	vec2 p = (gl_FragCoord.xy) / u_resolution.xy;
+
+	vec2 c1 = p;
+	vec2 c2 = p;
+
+	c2.x = c2.x+u_resolution.x/delta;
+	float dx = (col(c1)-col(c2))/delta;
+
+	c2 = p;
+	c2.y = c2.y + u_resolution.y/delta;
+	float dy = (col(c1)-col(c2))/delta;
+
+	c1.x = c1.x+dx;
+	c1.y = -(c1.y+dy);
+
+	float alpha = 1.+dot(dx,dy)*intence;
+	if (alpha < 0.7) alpha = 0.7;
+	gl_FragColor = texture2D(u_tex0,c1)*(alpha);
+}
diff --git a/assets/shaders/ZInvert.frag.glsl b/assets/shaders/ZInvert.frag.glsl
new file mode 100644
index 00000000..b1fd1748
--- /dev/null
+++ b/assets/shaders/ZInvert.frag.glsl
@@ -0,0 +1,23 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform vec2 u_resolution;
+uniform float u_time;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
+    vec2 uv;
+
+    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;
+
+    vec3 col =  texture2D(u_tex0,uv*.25).xyz;
+
+    gl_FragColor = vec4(col*r*r,1.0);
+}
\ No newline at end of file
-- 
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