diff options
Diffstat (limited to 'examples/supersnail.frag')
-rw-r--r-- | examples/supersnail.frag | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/examples/supersnail.frag b/examples/supersnail.frag index 154652a..dd0f77c 100644 --- a/examples/supersnail.frag +++ b/examples/supersnail.frag @@ -8,30 +8,30 @@ uniform float time; const float sharpness = 300; 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 circle(vec2 m, float r, vec2 p) { - vec2 diff = m - p; - float d = sqrt(dot(diff, diff)); + vec2 diff = m - p; + float d = sqrt(dot(diff, diff)); - return clamp((r - d)*sharpness, 0.0, 1.0); + return clamp((r - 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 scene = 0; + float scene = 0; - for (int i = 1; i <= 100; i++) { - float c = circle(vec2(0.5, 0) * rot(time/200/i), 0.1 + 0.002*i, p); - scene = abs(scene - c); - } + for (int i = 1; i <= 100; i++) { + float c = circle(vec2(0.5, 0) * rot(time/200/i), 0.1 + 0.002*i, p); + scene = abs(scene - c); + } - fragColor = vec4(vec3(1, 1, 1) * scene, 1); + fragColor = vec4(vec3(1, 1, 1) * scene, 1); } |