参考:

 

//--------------------------// Color//--------------------------D3DX10INLINE D3DXCOLOR* D3DXColorNegative    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC){#ifdef D3DX10_DEBUG    if(!pOut || !pC)        return NULL;#endif    pOut->r = 1.0f - pC->r;    pOut->g = 1.0f - pC->g;    pOut->b = 1.0f - pC->b;    pOut->a = pC->a;    return pOut;}D3DX10INLINE D3DXCOLOR* D3DXColorAdd    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC1, CONST D3DXCOLOR *pC2){#ifdef D3DX10_DEBUG    if(!pOut || !pC1 || !pC2)        return NULL;#endif    pOut->r = pC1->r + pC2->r;    pOut->g = pC1->g + pC2->g;    pOut->b = pC1->b + pC2->b;    pOut->a = pC1->a + pC2->a;    return pOut;}D3DX10INLINE D3DXCOLOR* D3DXColorSubtract    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC1, CONST D3DXCOLOR *pC2){#ifdef D3DX10_DEBUG    if(!pOut || !pC1 || !pC2)        return NULL;#endif    pOut->r = pC1->r - pC2->r;    pOut->g = pC1->g - pC2->g;    pOut->b = pC1->b - pC2->b;    pOut->a = pC1->a - pC2->a;    return pOut;}D3DX10INLINE D3DXCOLOR* D3DXColorScale    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC, FLOAT s){#ifdef D3DX10_DEBUG    if(!pOut || !pC)        return NULL;#endif    pOut->r = pC->r * s;    pOut->g = pC->g * s;    pOut->b = pC->b * s;    pOut->a = pC->a * s;    return pOut;}D3DX10INLINE D3DXCOLOR* D3DXColorModulate    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC1, CONST D3DXCOLOR *pC2){#ifdef D3DX10_DEBUG    if(!pOut || !pC1 || !pC2)        return NULL;#endif    pOut->r = pC1->r * pC2->r;    pOut->g = pC1->g * pC2->g;    pOut->b = pC1->b * pC2->b;    pOut->a = pC1->a * pC2->a;    return pOut;}D3DX10INLINE D3DXCOLOR* D3DXColorLerp    (D3DXCOLOR *pOut, CONST D3DXCOLOR *pC1, CONST D3DXCOLOR *pC2, FLOAT s){#ifdef D3DX10_DEBUG    if(!pOut || !pC1 || !pC2)        return NULL;#endif    pOut->r = pC1->r + s * (pC2->r - pC1->r);    pOut->g = pC1->g + s * (pC2->g - pC1->g);    pOut->b = pC1->b + s * (pC2->b - pC1->b);    pOut->a = pC1->a + s * (pC2->a - pC1->a);    return pOut;}