diff options
| author | Chris Robinson <[email protected]> | 2012-09-24 15:33:44 -0700 |
|---|---|---|
| committer | Chris Robinson <[email protected]> | 2012-09-24 15:33:44 -0700 |
| commit | 2ceea21f763f4d5639dea202900603ad49a2d6e4 (patch) | |
| tree | 8d2b8a2f19f6b9cea3a7e88b04126e01015854f4 | |
| parent | 12327da4fefe5aafb9d28d8db232ebd8f6ac93c3 (diff) | |
Avoid mixing silence to output
"Silence" being less than -100dB.
| -rw-r--r-- | Alc/mixer_c.c | 4 | ||||
| -rw-r--r-- | Alc/mixer_sse.c | 12 |
2 files changed, 15 insertions, 1 deletions
diff --git a/Alc/mixer_c.c b/Alc/mixer_c.c index cab3f8af..44ef5ded 100644 --- a/Alc/mixer_c.c +++ b/Alc/mixer_c.c @@ -100,9 +100,13 @@ void MixDirect_C(ALsource *Source, ALCdevice *Device, DirectParams *params, } for(c = 0;c < MaxChannels;c++) { + if(DrySend[c] < 0.00001f) + continue; + for(pos = 0;pos < BufferSize;pos++) DryBuffer[c][OutPos+pos] += data[pos]*DrySend[c]; } + pos = BufferSize; if(OutPos+pos == SamplesToDo) { for(c = 0;c < MaxChannels;c++) diff --git a/Alc/mixer_sse.c b/Alc/mixer_sse.c index d366ca8a..d2ea7439 100644 --- a/Alc/mixer_sse.c +++ b/Alc/mixer_sse.c @@ -156,7 +156,12 @@ void MixDirect_SSE(ALsource *Source, ALCdevice *Device, DirectParams *params, } for(c = 0;c < MaxChannels;c++) { - const __m128 gain = _mm_set1_ps(DrySend[c]); + __m128 gain; + + if(DrySend[c] < 0.00001f) + continue; + + gain = _mm_set1_ps(DrySend[c]); for(pos = 0;pos < BufferSize-3;pos += 4) { const __m128 val4 = _mm_load_ps(&data[pos]); @@ -165,15 +170,20 @@ void MixDirect_SSE(ALsource *Source, ALCdevice *Device, DirectParams *params, _mm_store_ps(&DryBuffer[c][OutPos+pos], dry4); } } + pos = BufferSize&~3; if(pos < BufferSize) { ALuint oldpos = pos; for(c = 0;c < MaxChannels;c++) { + if(DrySend[c] < 0.00001f) + continue; + pos = oldpos; for(;pos < BufferSize;pos++) DryBuffer[c][OutPos+pos] += data[pos]*DrySend[c]; } + pos = BufferSize; } if(OutPos+pos == SamplesToDo) { |