D3DXSHADD function
Two spherical tunes and functions (SH) are added. In other words, it is pout [i] = pa [i] pb [i].
definition:
FLOAT * WINAPI D3DXSHADD (
Float * pout,
Uint Order,
Const float * Pa,
Const float * PB
);
parameter:
pout
[OUT] points to the SH output coefficient. This factor is generated by generating the ORDER2 factor.
ORDER
ORDER calculated by the SH function. The range must be between D3DXSH_MINORDER to D3DXSH_MAXORDER. This value generates the ORDER2 factor, the index of the coefficient is ORDER - 1.
PA
[in] points to the first SH function vector.
PB
[in] points to the second SH function vector.
return value:
Returns the SH output coefficient.
Description:
Each coefficient of the base function YLM is present in the memory L2 M L position, where:
• The number of Index of the L base function.
· M is the base function index value, from a given L value, from -1 to L.
Function information:
HEADER
D3DX9Math.h
Import Library
D3DX9.LIB
Minimum operation systems
WINDOWS 98
Related Information:
Precomputed Radiance Transfer
