diff options
Diffstat (limited to 'examples/squares.frag')
| -rw-r--r-- | examples/squares.frag | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/examples/squares.frag b/examples/squares.frag index fd5dc94..574f220 100644 --- a/examples/squares.frag +++ b/examples/squares.frag @@ -8,35 +8,35 @@ uniform float time; const float sharpness = 500; mat2 rot(float a) { - return mat2( - cos(a), -sin(a), - sin(a), cos(a) - ); + return mat2( + cos(a), -sin(a), + sin(a), cos(a) + ); } float square(vec2 m, float a, float r, vec2 p) { - vec2 diff = abs((m - p) * rot(r)); - float d = max(diff.x, diff.y); + vec2 diff = abs((m - p) * rot(r)); + float d = max(diff.x, diff.y); - return clamp((a - d)*sharpness, 0.0, 1.0); + return clamp((a - d)*sharpness, 0.0, 1.0); } void main(void) { - vec2 m = res/2; - float s = min(m.x, m.y); - vec2 p = (gl_FragCoord.xy - m) / s; + vec2 m = res/2; + float s = min(m.x, m.y); + vec2 p = (gl_FragCoord.xy - m) / s; - float a = atan(p.x, p.y); + float a = atan(p.x, p.y); - float x = mod(p.x, 0.1); - float y = mod(p.y, 0.1); + float x = mod(p.x, 0.1); + float y = mod(p.y, 0.1); - float scene = 0; + float scene = 0; - for (int i = 1; i <= 50; i++) { - float c = square(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, time/500/i + time/(100*i), p); - scene = abs(scene - c); - } + for (int i = 1; i <= 50; i++) { + float c = square(vec2(0.5, 0) * rot(time/500/i), 0.1 + 0.005*i, time/500/i + time/(100*i), p); + scene = abs(scene - c); + } - fragColor = vec4(vec3(1, 1, 1) * scene, 1); + fragColor = vec4(vec3(1, 1, 1) * scene, 1); } |