diff options
Diffstat (limited to 'OpenAL32/Include/alu.h')
| -rw-r--r-- | OpenAL32/Include/alu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/OpenAL32/Include/alu.h b/OpenAL32/Include/alu.h index 2c326327..3fc677b2 100644 --- a/OpenAL32/Include/alu.h +++ b/OpenAL32/Include/alu.h @@ -391,6 +391,15 @@ inline ALfloat lerp(ALfloat val1, ALfloat val2, ALfloat mu) { return val1 + (val2-val1)*mu; } +inline ALfloat cubic(ALfloat val1, ALfloat val2, ALfloat val3, ALfloat val4, ALfloat mu) +{ + ALfloat mu2 = mu*mu, mu3 = mu2*mu; + ALfloat a0 = -0.5f*mu3 + mu2 + -0.5f*mu; + ALfloat a1 = 1.5f*mu3 + -2.5f*mu2 + 1.0f; + ALfloat a2 = -1.5f*mu3 + 2.0f*mu2 + 0.5f*mu; + ALfloat a3 = 0.5f*mu3 + -0.5f*mu2; + return val1*a0 + val2*a1 + val3*a2 + val4*a3; +} enum HrtfRequestMode { |