GPU Pro 6

126 II Rendering

#i f defined(ODDFRAME) // RED

// Horizontal pattern for frame [1]

int2 offset0 = int2 (0,− 1) ;

int2 offset1 = int2 (1 , 0) ;

#e l s e i f defined(EVENFRAME) // BLUE

int2 offset0 = int2 (1 , 0) ;

int2 offset1 = int2 (0,− 1) ;

#endif

s0 = CurrentFrame . Sample( PointSampler , UV );

s1 = CurrentFrame . Sample( PointSampler , UV , offset0);

s2 = PreviousFrame . Sample( LinearSampler , previousUV);

s3 = PreviousFrame . Sample( LinearSampler , previousUV , offset1);

return 0.25 ( s0 + s1 + s2 + s3 );}

Listing 3.10. Reordered temporal FLIPQUAD reconstruction kernel.

3.6.6 History Sample Acceptance Method

Our acceptance method for history samples ...