diff options
| -rw-r--r-- | examples/almultireverb.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/examples/almultireverb.c b/examples/almultireverb.c index 5adab269..9c97e334 100644 --- a/examples/almultireverb.c +++ b/examples/almultireverb.c @@ -500,16 +500,20 @@ int main(int argc, char **argv) other_dir[1] = local_norm[1] / -2.0f; other_dir[2] = local_norm[2] / -2.0f; + alEffectf(effects[0], AL_EAXREVERB_GAIN, reverb0.flGain); alEffectfv(effects[0], AL_EAXREVERB_REFLECTIONS_PAN, this_dir); alEffectfv(effects[0], AL_EAXREVERB_LATE_REVERB_PAN, this_dir); + alEffectf(effects[1], AL_EAXREVERB_GAIN, reverb1.flGain); alEffectfv(effects[1], AL_EAXREVERB_REFLECTIONS_PAN, other_dir); alEffectfv(effects[1], AL_EAXREVERB_LATE_REVERB_PAN, other_dir); } else { + const EFXEAXREVERBPROPERTIES *other_reverb; + const EFXEAXREVERBPROPERTIES *this_reverb; ALuint other_effect, this_effect; - ALfloat spread; + ALfloat spread, attn; /* Normalize the direction to the portal. */ local_dir[0] /= dist; @@ -521,6 +525,12 @@ int main(int argc, char **argv) */ local_radius = portal_radius * fabsf(dot_product(local_dir, local_norm)); + /* Calculate distance attenuation for the other zone, using the + * standard inverse distance model with the radius as a reference. + */ + attn = local_radius / dist; + if(attn > 1.0f) attn = 1.0f; + /* Calculate the 'spread' of the portal, which is the amount of * coverage the other zone has around the listener. */ @@ -534,12 +544,16 @@ int main(int argc, char **argv) /* We're in front of the portal, so we're in Zone 0. */ this_effect = effects[0]; other_effect = effects[1]; + this_reverb = &reverb0; + other_reverb = &reverb1; } else { /* We're behind the portal, so we're in Zone 1. */ this_effect = effects[1]; other_effect = effects[0]; + this_reverb = &reverb1; + other_reverb = &reverb0; } /* Scale the other zone's panning vector down as the portal's @@ -555,10 +569,12 @@ int main(int argc, char **argv) this_dir[1] = local_dir[1] * -spread; this_dir[2] = local_dir[2] * -spread; - /* Now set the effects' panning vectors. */ + /* Now set the effects' panning vectors and distance attenuation. */ + alEffectf(this_effect, AL_EAXREVERB_GAIN, this_reverb->flGain); alEffectfv(this_effect, AL_EAXREVERB_REFLECTIONS_PAN, this_dir); alEffectfv(this_effect, AL_EAXREVERB_LATE_REVERB_PAN, this_dir); + alEffectf(other_effect, AL_EAXREVERB_GAIN, other_reverb->flGain * attn); alEffectfv(other_effect, AL_EAXREVERB_REFLECTIONS_PAN, other_dir); alEffectfv(other_effect, AL_EAXREVERB_LATE_REVERB_PAN, other_dir); } |