Merge pull request #197 from Raulshc/Modulator

EFX: Modulator fixes
2018-05-31 19:38:42 -07:00
parent 0b7f35b289 1bba276aaf
commit d5dd4937eb
1 changed files with 3 additions and 3 deletions
@@ -63,17 +63,17 @@ DEFINE_ALEFFECTSTATE_VTABLE(ALmodulatorState);

 static inline ALfloat Sin(ALsizei index)
 {
-    return sinf(index*(F_TAU/WAVEFORM_FRACONE) - F_PI)*0.5f + 0.5f;
+    return sinf(index * (F_TAU / WAVEFORM_FRACONE));
 }

 static inline ALfloat Saw(ALsizei index)
 {
-    return (ALfloat)index / WAVEFORM_FRACONE;
+    return index*(2.0f/WAVEFORM_FRACONE) - 1.0f;
 }

 static inline ALfloat Square(ALsizei index)
 {
-    return (ALfloat)((index >> (WAVEFORM_FRACBITS - 1)) & 1);
+    return ((index>>(WAVEFORM_FRACBITS-1))&1)*2.0f - 1.0f;
 }

 #define DECL_TEMPLATE(func)                                                   \