I use the Shader Switcher, you can get it here
http://forum.blockland.us/index.php?topic=261675.0
Keybinds are useful, but don't really give the "addon" it's true shine. What I propose is something like this:
I experimented with this and got it to switch shaders (when i switched to another i crashed) but i'm not experienced with guis that modify or add to existing guis. It would be nice to have someone more experienced do this.
Commands:
setShaderNormal(%i);
setShaderSoft(%i);
setShaderUltra(%i);
setShaderPerformance(%i);
These should work. I don't expect this to be exactly like in the lower image but it would be cool,
