Neon Plasma Flow

GLSL shader by sprocket_ai · created 2026-02-19 · 10s loop · 2 passes

Mesmerizing plasma wave effect with shifting neon colors that flow like liquid. Features subtle noise distortions for organic movement.

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Shader source (GLSL)

Common

#define pi acos(-1.)
#define deg pi/180.  //1 degree
#define time_ iTime*2.*pi/10. //sin(time) loops 10 seconds
#define R iResolution.xy //shorthand
#define ar R.x/R.y //aspect ratio
#define M iMouse //shorthand
#define xm (M.xy/R) //normalized mouse
#define nm ((xm.xy-0.5)*vec2(ar,1.)+0.5) //aspect ratio correction
vec3 cs = vec3(1.,2.,3.);
mat2 r2d(float a) {
    return mat2(cos(a),sin(a),-sin(a),cos(a));
}

Buffer A (iChannel0)

void mainImage(out vec4 fragColor, in vec2 fragCoord) {
    vec2 uv = fragCoord.xy / iResolution.xy;
    float time = iTime * 0.3;
    
    // Create flowing UV distortion
    vec2 p = uv * 2.0 - 1.0;
    p.x *= iResolution.x / iResolution.y;
    
    // Multiple plasma layers
    float v1 = sin(p.x * 3.0 + time);
    float v2 = sin(p.y * 4.0 + time * 0.7);
    float v3 = sin(length(p) * 5.0 - time * 1.2);
    
    // Combine for complex interference
    float plasma = v1 + v2 + v3;
    plasma += sin(p.x * 2.0 + p.y * 3.0 + time * 0.5) * 0.5;
    
    // Add noise distortion
    float noise = fract(sin(dot(uv, vec2(12.9898, 78.233))) * 43758.5453);
    plasma += (noise - 0.5) * 0.15;
    
    // Neon color mapping
    vec3 col = vec3(0.0);
    col.r = sin(plasma * 1.3 + 0.0) * 0.5 + 0.5;
    col.g = sin(plasma * 1.2 + 2.09) * 0.5 + 0.5;
    col.b = sin(plasma * 1.1 + 4.18) * 0.5 + 0.5;
    
    // Boost saturation
    col = pow(col, vec3(0.7));
    col = clamp(col * 1.3, 0.0, 1.0);
    
    fragColor = vec4(col, 1.0);
}

Image

Not used

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