diff options
Diffstat (limited to 'intern/cycles/util/util_math.h')
| -rw-r--r-- | intern/cycles/util/util_math.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/intern/cycles/util/util_math.h b/intern/cycles/util/util_math.h index 85cbd18b7ba..52aeb8d8599 100644 --- a/intern/cycles/util/util_math.h +++ b/intern/cycles/util/util_math.h @@ -55,6 +55,15 @@ CCL_NAMESPACE_BEGIN #ifndef M_2_PI_F # define M_2_PI_F (0.6366197723675813f) /* 2/pi */ #endif +#ifndef M_1_2PI_F +# define M_1_2PI_F (0.1591549430918953f) /* 1/(2*pi) */ +#endif +#ifndef M_SQRT_PI_8_F +# define M_SQRT_PI_8_F (0.6266570686577501f) /* sqrt(pi/8) */ +#endif +#ifndef M_LN_2PI_F +# define M_LN_2PI_F (1.8378770664093454f) /* ln(2*pi) */ +#endif /* Multiplication */ #ifndef M_2PI_F @@ -541,6 +550,16 @@ ccl_device_inline float sqr(float a) return a * a; } +ccl_device_inline float pow20(float a) +{ + return sqr(sqr(sqr(sqr(a))*a)); +} + +ccl_device_inline float pow22(float a) +{ + return sqr(a*sqr(sqr(sqr(a))*a)); +} + ccl_device_inline float beta(float x, float y) { #ifndef __KERNEL_OPENCL__ |