Kaliedo rotate

1 files changed, 24 insertions, 6 deletions

diff --git a/src/main/resources/shaders/kaleidos.glsl b/src/main/resources/shaders/kaleidos.glsl
index b8c499b..689d806 100644
--- a/src/main/resources/shaders/kaleidos.glsl
+++ b/src/main/resources/shaders/kaleidos.glsl
@@ -96,17 +96,35 @@ void main() {
   float aspect_ratio = resolution.y / resolution.x;
   vec2 uv = (gl_GlobalInvocationID.xy - resolution / 2) * vec2(1.0, aspect_ratio) / resolution;
 
-  vec3 color = enable_antialiasing ? antialiased_image(uv) : image(uv);
-
   float t = seconds / 3;
+  vec2 offset = vec2(mod(t * sin(t * 8), 0.02), 0);
+
+  float tilt = 0, scale = 1.0;
+  float div1 = mod(t * 10, 17);
+  int s1 = 7, s2 = 15;
+  bool gshake = int(div1) == s1 || int(div1) == s2;
+  tilt = mix(tilt, PI / 3, ease_in_out_quart(smoothstep(s1 + 1, s1 + 2, div1)));
+  scale = mix(scale, 1.3, ease_in_out_quart(smoothstep(s1 + 1, s1 + 1.5, div1)));
+  scale = mix(scale, 1, ease_in_out_quart(smoothstep(s1 + 1.5, s1 + 2, div1)));
+  tilt = mix(tilt, PI / 2, step(div1, s2 + 2) * smoothstep(s1 + 1, 30, div1));
+  tilt = mix(tilt, 0, ease_in_out_quart(smoothstep(s2 + 1, s2 + 2, div1)));
+  scale = mix(scale, 1.3, ease_in_out_quart(smoothstep(s2 + 1, s2 + 1.5, div1)));
+  scale = mix(scale, 1, ease_in_out_quart(smoothstep(s2 + 1.5, s2 + 2, div1)));
+
+  float saturate = smoothstep(s1 + 2, s2, div1);
+
+  uv *= mat2x2(cos(tilt), -sin(tilt), sin(tilt), cos(tilt));
+  uv *= scale;
+
+  vec3 color = enable_antialiasing ? antialiased_image(uv) : image(uv);
 
-  vec2 offset = vec2(mod(t, 0.01), mod(t, 0.003));
-  if (int(t * 5) % 20 == 10) {
+  if (int(t * 5) % 20 == 5) {
     color.r = (color.r + image(uv + offset).r / 2 + image(uv - offset).r / 2) / 2.;
-    color.b = (color.b + image(uv + offset).b + image(uv - offset).b) / 3.;
-  } else if (int(t * 10) % 17 == 7) {
+    color.b = (color.b + image(uv + vec2(offset.y, offset.x)).b + image(uv - offset).b) / 3.;
+  } else if (gshake) {
     color.g = (color.g + image(uv + offset).g / 2 + image(uv - offset).g / 2) / 2.;
   }
+  color.r *= (0.7 + saturate);
 
   imageStore(output_image, ivec2(gl_GlobalInvocationID.xy), vec4(color, 1));
 }