#version 440
layout(location = 0) in vec2 qt_TexCoord0;
layout(location = 0) out vec4 fragColor;
layout(std140, binding = 0) uniform buf {
mat4 qt_Matrix;
float qt_Opacity;
// Custom uniforms
float chromatic; // Chromatic aberration intensity (0.0 - 0.05 typical)
float displacement; // Horizontal displacement amount
float noiseAmount; // Noise/static intensity (0.0 - 1.0)
float time; // Time for noise animation
float scanlineAlpha; // Scanline darkness (0.0 - 0.3 typical)
};
layout(binding = 1) uniform sampler2D source;
// Simple pseudo-random function
float random(vec2 st) {
return fract(sin(dot(st.xy, vec2(12.9898, 78.233))) * 43758.5453123);
}
void main() {
vec2 uv = qt_TexCoord0;
// Apply horizontal displacement
uv.x += displacement;
// Chromatic aberration - offset RGB channels
float r = texture(source, uv + vec2(chromatic, 0.0)).r;
float g = texture(source, uv).g;
float b = texture(source, uv - vec2(chromatic, 0.0)).b;
float a = texture(source, uv).a;
vec4 color = vec4(r, g, b, a);
// Add noise/static
if (noiseAmount > 0.0) {
float noise = random(uv + vec2(time, time * 0.7)) * noiseAmount;
color.rgb += vec3(noise) * a;
}
// Add scanlines (subtle horizontal lines)
if (scanlineAlpha > 0.0) {
float scanline = sin(uv.y * 800.0) * 0.5 + 0.5;
color.rgb -= vec3(scanline * scanlineAlpha) * a;
}
fragColor = color * qt_Opacity;
}
