HPPD stands for Halliucagenic Presistent Perception Disorder.
this program attempts to recreate the visual symptoms a person with this
disorder can see.
a thread about it on HPPDOnline .
Trails Simulation is Just a simple SDL application ported to PSP to simulate trails. Move the joystick to change the point of focus, use the Circle Cross Triangle and Square buttons to do different effects. Use the right trigger to change the background graphic and blend it in with the current pixels. Tested on Firmware 2.0 with Fanjita's Eboot loader
This is ANSI C++ using SDL so it can run on many platforms.
to compile it out for the PC use the following command:
to compile out for PSP :
Download Trails Simulation