diff options
Diffstat (limited to 'alc')
| -rw-r--r-- | alc/panning.cpp | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/alc/panning.cpp b/alc/panning.cpp index 8141d1bc..54e84c20 100644 --- a/alc/panning.cpp +++ b/alc/panning.cpp @@ -905,19 +905,20 @@ void CalcAmbiCoeffs(const float y, const float z, const float x, const float spr coeffs[2] = 1.732050808f * z; /* ACN 2 = sqrt(3) * Z */ coeffs[3] = 1.732050808f * x; /* ACN 3 = sqrt(3) * X */ /* Second-order */ - coeffs[4] = 3.872983346f * x * y; /* ACN 4 = sqrt(15) * X * Y */ - coeffs[5] = 3.872983346f * y * z; /* ACN 5 = sqrt(15) * Y * Z */ - coeffs[6] = 1.118033989f * (z*z*3.0f - 1.0f); /* ACN 6 = sqrt(5)/2 * (3*Z*Z - 1) */ - coeffs[7] = 3.872983346f * x * z; /* ACN 7 = sqrt(15) * X * Z */ - coeffs[8] = 1.936491673f * (x*x - y*y); /* ACN 8 = sqrt(15)/2 * (X*X - Y*Y) */ + const float xx{x*x}, yy{y*y}, zz{z*z}; + coeffs[4] = 3.872983346f * x * y; /* ACN 4 = sqrt(15) * X * Y */ + coeffs[5] = 3.872983346f * y * z; /* ACN 5 = sqrt(15) * Y * Z */ + coeffs[6] = 1.118033989f * (3.0f*zz - 1.0f); /* ACN 6 = sqrt(5)/2 * (3*Z*Z - 1) */ + coeffs[7] = 3.872983346f * x * z; /* ACN 7 = sqrt(15) * X * Z */ + coeffs[8] = 1.936491673f * (xx - yy); /* ACN 8 = sqrt(15)/2 * (X*X - Y*Y) */ /* Third-order */ - coeffs[9] = 2.091650066f * y * (x*x*3.0f - y*y); /* ACN 9 = sqrt(35/8) * Y * (3*X*X - Y*Y) */ - coeffs[10] = 10.246950766f * z * x * y; /* ACN 10 = sqrt(105) * Z * X * Y */ - coeffs[11] = 1.620185175f * y * (z*z*5.0f - 1.0f); /* ACN 11 = sqrt(21/8) * Y * (5*Z*Z - 1) */ - coeffs[12] = 1.322875656f * z * (z*z*5.0f - 3.0f); /* ACN 12 = sqrt(7)/2 * Z * (5*Z*Z - 3) */ - coeffs[13] = 1.620185175f * x * (z*z*5.0f - 1.0f); /* ACN 13 = sqrt(21/8) * X * (5*Z*Z - 1) */ - coeffs[14] = 5.123475383f * z * (x*x - y*y); /* ACN 14 = sqrt(105)/2 * Z * (X*X - Y*Y) */ - coeffs[15] = 2.091650066f * x * (x*x - y*y*3.0f); /* ACN 15 = sqrt(35/8) * X * (X*X - 3*Y*Y) */ + coeffs[9] = 2.091650066f * y * (3.0f*xx - yy); /* ACN 9 = sqrt(35/8) * Y * (3*X*X - Y*Y) */ + coeffs[10] = 10.246950766f * z * x * y; /* ACN 10 = sqrt(105) * Z * X * Y */ + coeffs[11] = 1.620185175f * y * (5.0f*zz - 1.0f); /* ACN 11 = sqrt(21/8) * Y * (5*Z*Z - 1) */ + coeffs[12] = 1.322875656f * z * (5.0f*zz - 3.0f); /* ACN 12 = sqrt(7)/2 * Z * (5*Z*Z - 3) */ + coeffs[13] = 1.620185175f * x * (5.0f*zz - 1.0f); /* ACN 13 = sqrt(21/8) * X * (5*Z*Z - 1) */ + coeffs[14] = 5.123475383f * z * (xx - yy); /* ACN 14 = sqrt(105)/2 * Z * (X*X - Y*Y) */ + coeffs[15] = 2.091650066f * x * (xx - 3.0f*yy); /* ACN 15 = sqrt(35/8) * X * (X*X - 3*Y*Y) */ /* Fourth-order */ /* ACN 16 = sqrt(35)*3/2 * X * Y * (X*X - Y*Y) */ /* ACN 17 = sqrt(35/2)*3/2 * (3*X*X - Y*Y) * Y * Z */ |