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Avoid needlessly copying the listener matrix

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This commit is contained in:
Chris Robinson
2012-10-12 07:45:20 -07:00
parent 43c8c4fa29
commit 6750bbb1d7
1 changed files with 3 additions and 7 deletions
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Alc/ALu.c
+3 -7
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@@ -105,7 +105,7 @@ static WetMixerFunc SelectSendMixer(void)
}
static __inline ALvoid aluMatrixVector(ALfloat *vector,ALfloat w,ALfloat matrix[4][4])
static __inline ALvoid aluMatrixVector(ALfloat *vector, ALfloat w, ALfloat (*RESTRICT matrix)[4])
{
ALfloat temp[4] = {
vector[0], vector[1], vector[2], w
@@ -448,7 +448,6 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
ALboolean WetGainAuto;
ALboolean WetGainHFAuto;
enum Resampler Resampler;
ALfloat Matrix[4][4];
ALfloat Pitch;
ALuint Frequency;
ALint NumSends;
@@ -471,11 +470,6 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
ListenerVel[0] = ALContext->Listener->Velocity[0];
ListenerVel[1] = ALContext->Listener->Velocity[1];
ListenerVel[2] = ALContext->Listener->Velocity[2];
for(i = 0;i < 4;i++)
{
for(j = 0;j < 4;j++)
Matrix[i][j] = ALContext->Listener->Params.Matrix[i][j];
}
/* Get source properties */
SourceVolume = ALSource->Gain;
@@ -546,6 +540,7 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
/* Transform source to listener space (convert to head relative) */
if(ALSource->HeadRelative == AL_FALSE)
{
ALfloat (*RESTRICT Matrix)[4] = ALContext->Listener->Params.Matrix;
/* Transform source vectors */
aluMatrixVector(Position, 1.0f, Matrix);
aluMatrixVector(Direction, 0.0f, Matrix);
@@ -555,6 +550,7 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
}
else
{
ALfloat (*RESTRICT Matrix)[4] = ALContext->Listener->Params.Matrix;
/* Transform listener velocity from world space to listener space */
aluMatrixVector(ListenerVel, 0.0f, Matrix);
/* Offset the source velocity to be relative of the listener velocity */