1 files changed, 22 insertions, 0 deletions

diff --git a/assets/shaders/Pulse.frag.glsl b/assets/shaders/Pulse.frag.glsl
new file mode 100644
index 00000000..b24c9bef
--- /dev/null
+++ b/assets/shaders/Pulse.frag.glsl
@@ -0,0 +1,22 @@
+#ifdef GL_ES
+precision highp float;
+#endif
+
+uniform float u_time;
+uniform vec2 u_resolution;
+uniform sampler2D u_tex0;
+
+void main(void)
+{
+    vec2 halfres = u_resolution.xy/2.0;
+    vec2 cPos = gl_FragCoord.xy;
+
+    cPos.x -= 0.5*halfres.x*sin(u_time/2.0)+0.3*halfres.x*cos(u_time)+halfres.x;
+    cPos.y -= 0.4*halfres.y*sin(u_time/5.0)+0.3*halfres.y*cos(u_time)+halfres.y;
+    float cLength = length(cPos);
+
+    vec2 uv = gl_FragCoord.xy/u_resolution.xy+(cPos/cLength)*sin(cLength/30.0-u_time*10.0)/25.0;
+    vec3 col = texture2D(u_tex0,uv).xyz*50.0/cLength;
+
+    gl_FragColor = vec4(col,1.0);
+}
\ No newline at end of file