feat: crt/vignette/chromatic-aberration/pixelate shader + dynamischer F10-cycle

config/hypr/shaders/vignette.glsl

@@ -0,0 +1,16 @@
+#version 300 es
+precision highp float;
+
+in vec2 v_texcoord;
+uniform sampler2D tex;
+out vec4 fragColor;
+
+void main() {
+    vec4 c = texture(tex, v_texcoord);
+
+    vec2 uv = v_texcoord - 0.5;
+    float vignette = 1.0 - dot(uv, uv) * 2.2;
+    c.rgb *= clamp(vignette, 0.0, 1.0);
+
+    fragColor = c;
+}