Coronas

[Gandi]

Hi!

I tried to implement a sun-billboard into my project.. as i couödnt find anything else i tried the corona.. but it doesnt work the way i want it to..

I want to set different appearance relative stuff in a shader.

Im creating it like that:

 

sun = CreateCorona();

SetCoronaRadius(sun, 1,2);

PaintEntity(sun, "abstract::sun.mat");

PositionEntity(sun,Vec3(1,0,0));

so i checked the corona.frag shader.. this one was pretty confusing.. (why do you set the color at gl_FragData[3]. usually you use gl_FragData[0]..)

 

my problems: if u just set the color in the frag shader its a black rectangle showing up.. also there is a little clipping problem as the corona disapperas when the center of it inst in the screen anymore..

 

hope some1 can help me..

Gandi