From ea8f17368def0b581efcc332d057c0a034d4da9b Mon Sep 17 00:00:00 2001
From: krolxon <krolyxon@tutanota.com>
Date: Sun, 11 Jan 2026 19:18:06 +0530
Subject: add shader script and keybinds

---
 .config/hypr/shaders/04_optics_compensate.glsl | 72 ++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100755 .config/hypr/shaders/04_optics_compensate.glsl

(limited to '.config/hypr/shaders/04_optics_compensate.glsl')

diff --git a/.config/hypr/shaders/04_optics_compensate.glsl b/.config/hypr/shaders/04_optics_compensate.glsl
new file mode 100755
index 0000000..ea426c5
--- /dev/null
+++ b/.config/hypr/shaders/04_optics_compensate.glsl
@@ -0,0 +1,72 @@
+#version 300 es
+// Retro CRT Shader - FULLY OPTIMIZED
+// Fixes: Resolution-aware scanlines, proper vignette, edge clamping,
+//        correct aberration direction, anti-aliased scanlines
+
+precision highp float;
+
+in vec2 v_texcoord;
+uniform sampler2D tex;
+out vec4 fragColor;
+
+// --- CONFIGURATION ---
+const float CURVATURE = 3.5;
+const float SCANLINE_STRENGTH = 0.25;
+// Approximate screen height in pixels (adjust to your resolution)
+const float SCREEN_HEIGHT = 1080.0;
+// Scanlines per screen height (lower = thicker lines)
+const float SCANLINE_COUNT = 540.0;
+const float ABERRATION = 0.002;
+const float VIGNETTE_RADIUS = 1.00;
+const float VIGNETTE_SOFTNESS = 0.45;
+// Phosphor glow simulation
+const float GLOW = 0.03;
+
+vec2 curveUV(vec2 uv) {
+    uv = uv * 2.0 - 1.0;
+    vec2 offset = abs(uv.yx) / vec2(CURVATURE);
+    uv = uv + uv * offset * offset;
+    uv = uv * 0.5 + 0.5;
+    return uv;
+}
+
+void main() {
+    vec2 uv = curveUV(v_texcoord);
+    
+    // Black bezel for out-of-bounds
+    if (uv.x < 0.0 || uv.x > 1.0 || uv.y < 0.0 || uv.y > 1.0) {
+        fragColor = vec4(0.0, 0.0, 0.0, 1.0);
+        return;
+    }
+    
+    // FIXED: Clamp aberration samples to prevent edge artifacts
+    vec2 centerDist = uv - 0.5;
+    vec2 aberrOffset = centerDist * ABERRATION;
+    
+    // FIXED: Correct direction - red focuses short, blue focuses long
+    float r = texture(tex, clamp(uv + aberrOffset, 0.0, 1.0)).r;
+    float g = texture(tex, uv).g;
+    float b = texture(tex, clamp(uv - aberrOffset, 0.0, 1.0)).b;
+    vec3 color = vec3(r, g, b);
+    
+    // FIXED: Anti-aliased scanlines that don't shimmer during scroll
+    // Using smooth triangle wave instead of harsh sine
+    float scanlinePhase = uv.y * SCANLINE_COUNT * 2.0;
+    float scanline = abs(fract(scanlinePhase) - 0.5) * 2.0; // Triangle wave 0-1
+    scanline = smoothstep(0.0, 1.0, scanline); // Smooth it
+    float scanlineFactor = 1.0 - (SCANLINE_STRENGTH * (1.0 - scanline));
+    color *= scanlineFactor;
+    
+    // Subtle phosphor glow (brightens slightly between scanlines)
+    color += GLOW * (1.0 - scanline);
+    
+    // FIXED: Proper circular vignette with correct smoothstep bounds
+    float dist = length(centerDist) * 2.0; // 0 at center, ~1.414 at corners
+    float vignette = 1.0 - smoothstep(VIGNETTE_RADIUS, VIGNETTE_RADIUS + VIGNETTE_SOFTNESS, dist);
+    color *= vignette;
+    
+    // Subtle brightness boost to compensate for darkening effects
+    color *= 1.1;
+    
+    fragColor = vec4(clamp(color, 0.0, 1.0), 1.0);
+}
-- 
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