The GLSL Viewer plugin lets you preview and run GLSL fragment shaders directly within your notes. It offers Shadertoy compatible syntax, making it easy to port existing shader code. Load custom textures from your vault using iChannel0-3 channels, with support for texture shortcuts and a visual browser for quick selection. Templates help you build complex shaders with minimal code - just define the template once and reuse it. Configure aspect ratio, autoplay behavior and code visibility through simple comment directives. Thumbnails generate automatically for shaders that don't autoplay. The plugin works alongside syntax highlighters without conflicts and provides all standard Shadertoy uniforms like iTime, iResolution and iMouse for interactive animations.