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Added mtxFromNormal.

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Branimir Karadžić
2016-06-14 22:34:20 -07:00
parent fff221bb70
commit 7e2f79f783
1 changed files with 20 additions and 1 deletions
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21
include/bx/fpumath.h
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@@ -341,7 +341,7 @@ namespace bx
_result[2] = 1.0f / _a[2];
}
inline void vec3TangentFrame(const float* _n, float* _t, float* _b)
inline void vec3TangentFrame(const float* __restrict _n, float* __restrict _t, float* __restrict _b)
{
const float nx = _n[0];
const float ny = _n[1];
@@ -550,6 +550,25 @@ namespace bx
_result[15] = 1.0f;
}
inline void mtxFromNormal(float* __restrict _result, const float* __restrict _normal, float _scale, const float* __restrict _pos)
{
float tangent[3];
float bitangent[3];
vec3TangentFrame(_normal, tangent, bitangent);
vec3Mul(&_result[ 0], bitangent, _scale);
vec3Mul(&_result[ 4], _normal, _scale);
vec3Mul(&_result[ 8], tangent, _scale);
_result[ 3] = 0.0f;
_result[ 7] = 0.0f;
_result[11] = 0.0f;
_result[12] = _pos[0];
_result[13] = _pos[1];
_result[14] = _pos[2];
_result[15] = 1.0f;
}
inline void mtxQuat(float* __restrict _result, const float* __restrict _quat)
{
const float x = _quat[0];