Shortcuts you invent, rules you write, gestures you own - all still just data

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8

config/dot/hypr/shaders/deuteranopia.frag

@@ -0,0 +1,28 @@
+// Deuteranopia -- green-blind.
+//
+// Panama's accessibility color filters. Selected by the `colorFilter`
+// preference; hypr/looks.lua maps the enum to this path at config time and
+// services/SystemSettings.qml does the same live.
+//
+// Same family of matrices as protanopia.frag, weighted for the missing green
+// cone instead of the red one. See that file for why this is a correction
+// rather than a simulation, and for the column-major note.
+
+#version 300 es
+
+precision mediump float;
+in vec2 v_texcoord;
+layout(location = 0) out vec4 fragColor;
+uniform sampler2D tex;
+
+const mat3 deuteranopia = mat3(
+    0.625, 0.700, 0.000,
+    0.375, 0.300, 0.300,
+    0.000, 0.000, 0.700
+);
+
+void main() {
+    vec4 pixColor = texture(tex, v_texcoord);
+
+    fragColor = vec4(clamp(deuteranopia * pixColor.rgb, 0.0, 1.0), pixColor.a);
+}