Project Manhattan: GLSL Shader Editor

// Project Manhattan GLSL Fragment Shader
// Retro CRT effect with scanlines

uniform vec2 resolution;
uniform float time;

void main() {
    vec2 uv = gl_FragCoord.xy / resolution.xy;
    
    // CRT curve effect
    vec2 curvedUV = uv * 2.0 - 1.0;
    vec2 offset = curvedUV.yx / vec2(6.0, 4.0);
    curvedUV += curvedUV * offset * offset;
    curvedUV = curvedUV * 0.5 + 0.5;
    
    // Check if we're outside the screen
    if (curvedUV.x < 0.0 || curvedUV.x > 1.0 || curvedUV.y < 0.0 || curvedUV.y > 1.0) {
        gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);
        return;
    }
    
    // Generate a simple pattern
    float pattern = sin(curvedUV.x * 10.0 + time) * 0.5 + 0.5;
    pattern *= sin(curvedUV.y * 10.0 + time) * 0.5 + 0.5;
    
    // Apply color
    vec3 color = vec3(pattern * 0.7, pattern * 0.5, pattern);
    
    // Scanline effect
    float scanline = sin(curvedUV.y * resolution.y * 2.0) * 0.1 + 0.9;
    color *= scanline;
    
    // Vignette effect
    float vignette = length(curvedUV - 0.5) * 0.5;
    color *= 1.0 - vignette;
    
    gl_FragColor = vec4(color, 1.0);
}

Ready