Spettro

Spettro – GPU Audio Visualizer | GLSL Shader Player | NDI & Spout

Spettro is a real-time GPU audio visualizer designed for musicians, producers, VJs, live performers and streamers.

Unlike traditional visualizers, Spettro doesn't generate simple waveforms or spectrum analyzers. It renders fully animated GLSL shaders directly on your GPU while the audio passes through bit-perfect, making it ideal for both studio production and live performances.

The plugin includes four built-in psychedelic scenes, but that's only the beginning. You can import thousands of shaders from Shadertoy and GLSL Sandbox, including complex multipass projects, creating your own unlimited visual library.

Every imported shader automatically reacts to your music using real-time audio analysis. Level, bass, mids, highs and beat become GLSL uniforms that can drive any visual effect, allowing existing shaders to become fully audio reactive without modification.

Build your own library of shaders and instantly recall them with MIDI notes. Spettro supports up to 2008 MIDI-addressable shaders, making it perfect for live performances where visuals can change automatically during a song.

Spettro is also a professional video output engine. Broadcast your visuals directly to OBS, Resolume, vMix or any compatible software using Spout for zero-latency local transmission or NDI to send video over your local Ethernet network to another computer.

The renderer continues running even after the plugin window is closed, allowing you to keep streaming visuals while working normally inside your DAW.

Whether you're producing music, performing live, creating installations or streaming online, Spettro transforms your audio into immersive GPU-generated visual worlds.

Features:

• Real-time GPU GLSL shader rendering.
• Audio passes through untouched (zero latency).
• Four built-in psychedelic visual scenes.
• Import shaders directly from Shadertoy.
• Import shaders from GLSL Sandbox.
• Supports multipass Shadertoy projects.
• Audio-reactive GLSL uniforms.
• FFT and waveform texture available inside shaders.
• Save unlimited personal shader library.
• Up to 2008 MIDI-selectable shaders.
• MIDI control for instant visual changes.
• Spout output for OBS on the same computer.
• NDI output over Ethernet to another computer.
• Works with OBS, Resolume, vMix and compatible software.
• Standalone application included.
• VST3 plugin.

Shader Resources:

• Shadertoy.
• GLSL Sandbox.

System Requirements:

• Windows 10 / 11 (64-bit).
• VST3 compatible DAW or Standalone version.
• OpenGL 3.2 compatible graphics card.
• NDI Runtime required only for NDI output.

Support the Project.

If Spettro becomes part of your creative workflow, consider supporting the development of future experimental plugins from Creature From The Black. Every donation helps fund new tools, updates and open creative projects.