mirror of https://github.com/axmolengine/axmol.git
49 lines
1.1 KiB
Plaintext
49 lines
1.1 KiB
Plaintext
|
#version 310 es
|
||
|
|
precision highp float;
|
||
|
|
precision highp int;
|
||
|
|
// Shader from http://www.iquilezles.org/apps/shadertoy/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
layout(std140, binding = 0) uniform fs_ub {
|
||
|
|
vec2 center;
|
||
|
|
vec2 resolution;
|
||
|
|
vec2 u_screenSize;
|
||
|
|
vec4 u_Time;
|
||
|
|
};
|
||
|
|
|
||
|
|
//float u( float x ) { return 0.5+0.5*sign(x); }
|
||
|
|
float u( float x ) { return (x>0.0)?1.0:0.0; }
|
||
|
|
//float u( float x ) { return abs(x)/x; }
|
||
|
|
|
||
|
|
layout(location = SV_Target0) out vec4 FragColor;
|
||
|
|
|
||
|
|
void main(void)
|
||
|
|
{
|
||
|
|
float time = u_Time[1];
|
||
|
|
#ifdef METAL
|
||
|
|
vec2 fragCoord = vec2(gl_FragCoord.x, u_screenSize.y - gl_FragCoord.y);
|
||
|
|
#else
|
||
|
|
vec2 fragCoord = gl_FragCoord.xy;
|
||
|
|
#endif
|
||
|
|
vec2 p = 2.0 * (fragCoord - center.xy) / resolution.xy;
|
||
|
|
|
||
|
|
float a = atan(p.x,p.y);
|
||
|
|
float r = length(p)*.75;
|
||
|
|
|
||
|
|
float w = cos(3.1415927*time-r*2.0);
|
||
|
|
float h = 0.5+0.5*cos(12.0*a-w*7.0+r*8.0);
|
||
|
|
float d = 0.25+0.75*pow(h,1.0*r)*(0.7+0.3*w);
|
||
|
|
|
||
|
|
float rd = 1.0-r/d;
|
||
|
|
float col = 0.0;
|
||
|
|
if(rd > 0.0)
|
||
|
|
col = u( d-r ) * sqrt(rd)*r*2.5;
|
||
|
|
col *= 1.25+0.25*cos((12.0*a-w*7.0+r*8.0)/2.0);
|
||
|
|
col *= 1.0 - 0.35*(0.5+0.5*sin(r*30.0))*(0.5+0.5*cos(12.0*a-w*7.0+r*8.0));
|
||
|
|
FragColor = vec4(
|
||
|
|
col,
|
||
|
|
col-h*0.5+r*.2 + 0.35*h*(1.0-r),
|
||
|
|
col-h*r + 0.1*h*(1.0-r),
|
||
|
|
1.0);
|
||
|
|
}
|