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Diffstat (limited to 'assets/shaders/SquareTunnel.frag.glsl')
-rw-r--r--assets/shaders/SquareTunnel.frag.glsl21
1 files changed, 21 insertions, 0 deletions
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 @@
1#ifdef GL_ES
2precision highp float;
3#endif
4
5uniform vec2 u_resolution;
6uniform float u_time;
7uniform sampler2D u_tex0;
8
9void main(void)
10{
11 vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
12 vec2 uv;
13
14 float r = pow( pow(p.x*p.x,16.0) + pow(p.y*p.y,16.0), 1.0/32.0 );
15 uv.x = .5*u_time + 0.5/r;
16 uv.y = 1.0*atan(p.y,p.x)/3.1416;
17
18 vec3 col = texture2D(u_tex0,uv).xyz;
19
20 gl_FragColor = vec4(col*r*r*r,1.0);
21}