1 files changed, 28 insertions, 0 deletions

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