Release God's Eye View as open source

src/styles/noir.js

@@ -0,0 +1,57 @@
+/**
+ * Noir Style — Desaturation + High Contrast + Vignette
+ * Classic film noir / detective movie look
+ */
+export const noirShader = {
+  name: 'noir',
+  uniforms: {
+    contrastAmt: { default: 1.2, min: 0, max: 2, label: 'Contrast' },
+    grainAmt: { default: 0.5, min: 0, max: 1, label: 'Grain' },
+    vignetteAmt: { default: 0.5, min: 0, max: 1, label: 'Vignette' },
+  },
+  fragmentShader: /* glsl */ `
+    uniform sampler2D colorTexture;
+    uniform vec2 colorTextureDimensions;
+    uniform float intensity;
+    uniform float contrastAmt;
+    uniform float grainAmt;
+    uniform float vignetteAmt;
+    in vec2 v_textureCoordinates;
+
+    void main() {
+      vec2 uv = v_textureCoordinates;
+      vec4 color = texture(colorTexture, uv);
+
+      // Desaturate
+      float luma = dot(color.rgb, vec3(0.299, 0.587, 0.114));
+      vec3 gray = vec3(luma);
+      vec3 desaturated = mix(color.rgb, gray, intensity);
+
+      // High contrast with S-curve (driven by contrastAmt uniform)
+      float contrast = 1.0 + contrastAmt * intensity;
+      vec3 contrasted = (desaturated - 0.5) * contrast + 0.5;
+      contrasted = clamp(contrasted, 0.0, 1.0);
+
+      // Film grain (driven by grainAmt uniform)
+      float grain = fract(sin(dot(uv * colorTextureDimensions, vec2(12.9898, 78.233))) * 43758.5453);
+      grain = (grain - 0.5) * 0.08 * grainAmt * intensity;
+      contrasted += grain;
+
+      // Vignette (driven by vignetteAmt uniform)
+      vec2 vigUV = uv * (1.0 - uv);
+      float vig = vigUV.x * vigUV.y * 16.0;
+      vig = pow(vig, 0.3 + 0.4 * vignetteAmt * intensity);
+
+      // Slight sepia tint for warmth
+      vec3 sepia = vec3(
+        dot(contrasted, vec3(0.393, 0.769, 0.189)),
+        dot(contrasted, vec3(0.349, 0.686, 0.168)),
+        dot(contrasted, vec3(0.272, 0.534, 0.131))
+      );
+      vec3 tinted = mix(contrasted, sepia, 0.15 * intensity);
+
+      vec3 result = tinted * vig;
+      out_FragColor = vec4(mix(color.rgb, result, intensity), color.a);
+    }
+  `,
+};