Blotter is a WebGL text rendering engine and fragment shader text visualizer. It provides a system for composing and previewing stylized text effects by applying custom GLSL fragment shaders to text elements on a web canvas.
The project includes a shader editor for defining and updating custom shader logic and uniforms in real time. This interface allows for the creation of unique visual styles and the modification of rendering variables without reloading the underlying logic.
The engine incorporates performance optimizations for WebGL rendering, utilizing texture atlas batching and a single back buffer to minimize draw calls. It also supports real-time visual animation by synchronizing updates with the display refresh rate.