23 lines
799 B
GLSL
23 lines
799 B
GLSL
// This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0
|
|
// Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
|
|
// or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
|
|
// =========================================================================================================
|
|
|
|
#define AA // Comment to deactivate antialiasing
|
|
#define sat(a) clamp(a, 0., 1.)
|
|
#define PI 3.141592653
|
|
|
|
mat2 r2d(float a) { float c = cos(a), s = sin(a); return mat2(c, -s, s, c); }
|
|
|
|
vec2 _min(vec2 a, vec2 b)
|
|
{
|
|
if (a.x < b.x)
|
|
return a;
|
|
return b;
|
|
}
|
|
|
|
// Stolen from 0b5vr here https://www.shadertoy.com/view/ss3SD8
|
|
float hash11(float p)
|
|
{
|
|
return (fract(sin((p)*114.514)*1919.810));
|
|
} |