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Avoid temporary vector objects

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This commit is contained in:
Chris Robinson
2015-08-24 03:02:58 -07:00
parent c292b9e4ff
commit baf1bd5b54
1 changed files with 13 additions and 9 deletions
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Alc/ALu.c
+13 -9
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@@ -156,6 +156,15 @@ static inline ALfloat aluNormalize(ALfloat *vec)
return length;
}
static inline ALvoid aluMatrixFloat3(ALfloat *vec, ALfloat w, const aluMatrix *mtx)
{
aluVector v = {{ vec[0], vec[1], vec[2], w }};
vec[0] = v.v[0]*mtx->m[0][0] + v.v[1]*mtx->m[1][0] + v.v[2]*mtx->m[2][0] + v.v[3]*mtx->m[3][0];
vec[1] = v.v[0]*mtx->m[0][1] + v.v[1]*mtx->m[1][1] + v.v[2]*mtx->m[2][1] + v.v[3]*mtx->m[3][1];
vec[2] = v.v[0]*mtx->m[0][2] + v.v[1]*mtx->m[1][2] + v.v[2]*mtx->m[2][2] + v.v[3]*mtx->m[3][2];
}
static inline ALvoid aluMatrixVector(aluVector *vec, const aluMatrix *mtx)
{
aluVector v = *vec;
@@ -282,14 +291,14 @@ static ALvoid CalcListenerParams(ALlistener *Listener)
aluCrossproduct(N, V, U);
aluNormalize(U);
P = Listener->Position;
aluMatrixSet(&Listener->Params.Matrix,
U[0], V[0], -N[0], 0.0f,
U[1], V[1], -N[1], 0.0f,
U[2], V[2], -N[2], 0.0f,
0.0f, 0.0f, 0.0f, 1.0f
);
P = Listener->Position;
aluMatrixVector(&P, &Listener->Params.Matrix);
aluMatrixSetRow(&Listener->Params.Matrix, 3, -P.v[0], -P.v[1], -P.v[2], 1.0f);
@@ -496,13 +505,8 @@ ALvoid CalcNonAttnSourceParams(ALvoice *voice, const ALsource *ALSource, const A
if(!Relative)
{
const aluMatrix *lmatrix = &ALContext->Listener->Params.Matrix;
aluVector at, up;
aluVectorSet(&at, N[0], N[1], N[2], 0.0f);
aluVectorSet(&up, V[0], V[1], V[2], 0.0f);
aluMatrixVector(&at, lmatrix);
aluMatrixVector(&up, lmatrix);
N[0] = at.v[0]; N[1] = at.v[1]; N[2] = at.v[2];
V[0] = up.v[0]; V[1] = up.v[1]; V[2] = up.v[2];
aluMatrixFloat3(N, 0.0f, lmatrix);
aluMatrixFloat3(V, 0.0f, lmatrix);
}
/* Build and normalize right-vector */
aluCrossproduct(N, V, U);