Shaderific for OpenGL
To give you more flexibility in making real-time changes to your shaders the existing built-in uniforms are now extended by custom uniforms. It is possible to define up to 20 custom uniforms. You can find the respective menu item in the settings menu.
Custom uniforms can be of type boolean, integer and 2-, 3- or 4-component float vector. The name, type and respective value range can be chosen when creating a new uniform. Custom uniforms are bound automatically to the active shader program and changes to the uniforms are visible instantly.
The latest release of Shaderific includes a new shader for Conway's Game of Life that demonstrates the use of custom uniforms.