Custom PPSSPP shaders

[ppssp213]

Still tweaking, trying not destory the smokey / rainy atmosphere
but give it richer colours for better greens and browns.

               

Code:

#define SHADEBOOST   1         //ON:1/OFF:0 /color correction from GSdx/pcsx2 plugin, initially taken from

http://irrlicht.sourceforge.net/phpBB2/viewtopic.php?t=21057
#define saturation   2.0       //Default: 1.0 //negative will look like inverted colors shader
#define brightness   2.0       //Default: 1.0
#define contrast     1.0       //Default: 1.0 //negative will be... well negative;p
#define red          0.7       //Default: 1.0
#define green        0.7       //Default: 1.0
#define blue         0.7       //Default: 1.0