AutoYADM commit: 2025-06-23 13:30:15

.config/cava/shaders/eye_of_phi.frag

@@ -0,0 +1,117 @@
+#version 330
+
+// this shader was stolen from shadertoy user ChunderFPV
+
+#define SCALE 8.0
+#define PI radians(180.0)
+#define TAU (PI * 2.0)
+#define CS(a) vec2(cos(a), sin(a))
+#define PT(u, r) smoothstep(0.0, r, r - length(u))
+
+in vec2 fragCoord;
+out vec4 fragColor;
+
+uniform float bars[512];
+
+uniform int bars_count;    // number of bars (left + right) (configurable)
+uniform float shader_time; // shader execution time s
+uniform int bar_width;     // bar width (configurable), not used here
+uniform int bar_spacing;   // space bewteen bars (configurable)
+
+uniform vec3 u_resolution; // window resolution
+
+// colors, configurable in cava config file (r,g,b) (0.0 - 1.0)
+uniform vec3 bg_color; // background color
+uniform vec3 fg_color; // foreground color
+
+uniform int gradient_count;
+uniform vec3 gradient_colors[8]; // gradient colors
+
+// gradient map ( color, equation, time, width, shadow, reciprocal )
+vec3 gm(vec3 c, float n, float t, float w, float d, bool i) {
+  float g = min(abs(n), 1.0 / abs(n));
+  float s = abs(sin(n * PI - t));
+  if (i)
+    s = min(s, abs(sin(PI / n + t)));
+  return (1.0 - pow(abs(s), w)) * c * pow(g, d) * 6.0;
+}
+
+// denominator spiral, use 1/n for numerator
+// ( screen xy, spiral exponent, decimal, line width, hardness, rotation )
+float ds(vec2 u, float e, float n, float w, float h, float ro) {
+  float ur = length(u);          // unit radius
+  float sr = pow(ur, e);         // spiral radius
+  float a = round(sr) * n * TAU; // arc
+  vec2 xy = CS(a + ro) * ur;     // xy coords
+  float l = PT(u - xy, w);       // line
+  float s = mod(sr + 0.5, 1.0);  // gradient smooth
+  s = min(s, 1.0 - s);           // darken filter
+  return l * s * h;
+}
+
+void main() {
+  float t = shader_time / PI * 2.0;
+  vec4 m = vec4(0, 0, 0, 0);                 // iMouse;
+  m.xy = m.xy * 2.0 / u_resolution.xy - 1.0; // ±1x, ±1y
+  if (m.z > 0.0)
+    t += m.y * SCALE; // move time with mouse y
+  float z = (m.z > 0.0) ? pow(1.0 - abs(m.y), sign(m.y)) : 1.0; // zoom (+)
+  float e = (m.z > 0.0) ? pow(1.0 - abs(m.x), -sign(m.x))
+                        : 1.0;                   // screen exponent (+)
+  float se = (m.z > 0.0) ? e * -sign(m.y) : 1.0; // spiral exponent
+  vec3 bg = vec3(0);                             // black background
+
+  float aa = 3.0; // anti-aliasing
+
+  for (float j = 0.0; j < aa; j++)
+    for (float k = 0.0; k < aa; k++) {
+      vec3 c = vec3(0);
+      vec2 o = vec2(j, k) / aa;
+      vec2 uv = (fragCoord * u_resolution.xy - 0.5 * u_resolution.xy + o) /
+                u_resolution.y * SCALE * z; // apply cartesian, scale and zoom
+      if (m.z > 0.0)
+        uv =
+            exp(log(abs(uv)) * e) * sign(uv); // warp screen space with exponent
+
+      float px = length(fwidth(uv)); // pixel width
+      float x = uv.x;                // every pixel on x
+      float y = uv.y;                // every pixel on y
+      float l = length(uv);          // hypot of xy: sqrt(x*x+y*y)
+
+      float mc = (x * x + y * y - 1.0) / y;  // metallic circle at xy
+      float g = min(abs(mc), 1.0 / abs(mc)); // gradient
+      vec3 gold = vec3(1.0, 0.6, 0.0) * g * l;
+      vec3 blue = vec3(0.3, 0.5, 0.9) * (1.0 - g);
+      vec3 rgb = max(gold, blue);
+
+      float w = 0.1;                                      // line width
+      float d = 0.4;                                      // shadow depth
+      c = max(c, gm(rgb, mc, -t, w * bars[0], d, false)); // metallic
+      c = max(c, gm(rgb, abs(y / x) * sign(y), -t, w * bars[1], d,
+                    false)); // tangent
+      c = max(c, gm(rgb, (x * x) / (y * y) * sign(y), -t, w * bars[2], d,
+                    false)); // sqrt cotangent
+      c = max(c, gm(rgb, (x * x) + (y * y), t, w * bars[3], d,
+                    true)); // sqrt circles
+
+      c += rgb * ds(uv, se, t / TAU, px * 2.0 * bars[4], 2.0, 0.0); // spiral 1a
+      c += rgb * ds(uv, se, t / TAU, px * 2.0 * bars[5], 2.0, PI);  // spiral 1b
+      c +=
+          rgb * ds(uv, -se, t / TAU, px * 2.0 * bars[6], 2.0, 0.0); // spiral 2a
+      c += rgb * ds(uv, -se, t / TAU, px * 2.0 * bars[7], 2.0, PI); // spiral 2b
+      c = max(c, 0.0); // clear negative color
+
+      c += pow(max(1.0 - l, 0.0), 3.0 / z); // center glow
+
+      if (m.z > 0.0) // display grid on click
+      {
+        vec2 xyg = abs(fract(uv + 0.5) - 0.5) / px; // xy grid
+        c.gb += 0.2 * (1.0 - min(min(xyg.x, xyg.y), 1.0));
+      }
+      bg += c;
+    }
+  bg /= aa * aa;
+  bg *= sqrt(bg) * 1.5;
+
+  fragColor = vec4(bg, 1.0);
+}