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authorhwc4872012-02-02 11:57:58 -0800
committerhwc4872012-02-02 11:57:58 -0800
commit6321075d93044c6747682a8e7280b5996da7ec52 (patch)
tree2d484c78d66df96e1315ee0047d3ef5305b9f7f7 /assets/shaders/Star.frag.glsl
parent4222db97e353fb65fab787ba5927d16d9fa4e1f7 (diff)
downloadninja-6321075d93044c6747682a8e7280b5996da7ec52.tar.gz
added some additional shaders
Diffstat (limited to 'assets/shaders/Star.frag.glsl')
-rw-r--r--assets/shaders/Star.frag.glsl28
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 @@
1#ifdef GL_ES
2precision highp float;
3#endif
4
5uniform float u_time;
6uniform vec2 u_resolution;
7uniform sampler2D u_tex0;
8
9void main(void)
10{
11 vec2 uv;
12
13 vec2 p = -1.0 + 2.0 * gl_FragCoord.xy / u_resolution.xy;
14 float a = atan(p.y,p.x);
15 float r = sqrt(dot(p,p));
16 float s = r * (1.0+0.8*cos(u_time*1.0));
17
18 uv.x = .02*p.y+.03*cos(-u_time+a*3.0)/s;
19 uv.y = .1*u_time +.02*p.x+.03*sin(-u_time+a*3.0)/s;
20
21 float w = .9 + pow(max(1.5-r,0.0),4.0);
22
23 w*=0.6+0.4*cos(u_time+3.0*a);
24
25 vec3 col = texture2D(u_tex0,uv).xyz;
26
27 gl_FragColor = vec4(col*w,1.0);
28} \ No newline at end of file