GPU Pro 5

40 I Rendering

void gammaton_entry_program ()

{

// initialize payload

Ray ray ; GammaPayload prd ;

prd . ray_index = launch_index + g_SourceRayIndexOffset ;

prd . ray_depth =0; // counts recursions

// get gammaton data ( ping pong)

GammaHitShared& hitshared_i = HitShared_In [ prd . ray_index ];

GammaHitShared& hitshared_o = HitShared_Out [ prd . ray_index ];

// if gammaton is alive , continue the ray

if ( IS_ALIVE( hitshared_i . flags ))

{

// continue from last position

ray . origin = HitOptix [ prd . ray_index ]. position ;

ray . direction = normalize( hitshared_i . velocity);

prd . speed = length( hitshared_i . velocity );

hitshared_o . carriedMaterial =