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NX/VITA: Inverse Square Sound Attenuation

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cypress 2024-08-31 18:14:46 -07:00
parent 3d9454ec52
commit ac8e8def16
2 changed files with 81 additions and 10 deletions
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78
source/q_sound.h
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@ -186,5 +186,83 @@ wavinfo_t GetWavinfo (const char *name, byte *wav, int wavlength);
void SND_InitScaletable (void); void SND_InitScaletable (void);
//
// cypress -- sound dot product square root LUTs
//
float SND_InverseSpatializationRScaleLUT[126] = {
0.0f, 0.12247448713915896f, 0.1732050807568878f, 0.21213203435596434f,
0.2449489742783179f, 0.2738612787525832f, 0.30000000000000016f, 0.32403703492039315f,
0.3464101615137756f, 0.3674234614174769f, 0.38729833462074187f, 0.4062019202317982f,
0.4242640687119287f, 0.44158804331639256f, 0.4582575694955842f, 0.4743416490252571f,
0.4898979485566358f, 0.5049752469181041f, 0.5196152422706635f, 0.5338539126015658f,
0.5477225575051664f, 0.5612486080160914f, 0.5744562646538032f, 0.5873670062235368f,
0.6000000000000003f, 0.6123724356957948f, 0.62449979983984f, 0.6363961030678931f,
0.6480740698407863f, 0.6595452979136462f, 0.6708203932499373f, 0.6819090848492931f,
0.6928203230275513f, 0.7035623639735148f, 0.7141428428542853f, 0.7245688373094723f,
0.7348469228349538f, 0.7449832212875673f, 0.7549834435270754f, 0.764852927038918f,
0.7745966692414837f, 0.7842193570679065f, 0.7937253933193775f, 0.8031189202104508f,
0.8124038404635964f, 0.8215838362577496f, 0.8306623862918079f, 0.8396427811873336f,
0.8485281374238574f, 0.8573214099741128f, 0.866025403784439f, 0.8746427842267954f,
0.8831760866327851f, 0.8916277250063508f, 0.9000000000000004f, 0.9082951062292479f,
0.9165151389911684f, 0.9246621004453469f, 0.9327379053088819f, 0.9407443861113394f,
0.9486832980505142f, 0.9565563234854499f, 0.9643650760992959f, 0.9721111047611795f,
0.9797958971132716f, 0.9874208829065754f, 0.9949874371066203f, 1.0024968827881715f,
1.009950493836208f, 1.0173494974687907f, 1.0246950765959602f, 1.0319883720275151f,
1.0392304845413267f, 1.0464224768228179f, 1.0535653752852743f, 1.0606601717798216f,
1.0677078252031316f, 1.0747092630102342f, 1.081665382639197f, 1.0885770528538625f,
1.0954451150103326f, 1.1022703842524304f, 1.109053650640942f, 1.1157956802210702f,
1.1224972160321829f, 1.1291589790636218f, 1.135781669160055f, 1.1423659658795866f,
1.1489125293076061f, 1.1554220008291347f, 1.1618950038622256f, 1.1683321445547927f,
1.1747340124470735f, 1.181101181101772f, 1.1874342087037921f, 1.1937336386313326f,
1.2000000000000004f, 1.2062338081814823f, 1.2124355652982146f, 1.2186057606953946f,
1.2247448713915896f, 1.2308533625091176f, 1.2369316876852987f, 1.242980289465606f,
1.24899959967968f, 1.2549900398011138f, 1.2609520212918497f, 1.2668859459319932f,
1.272792206135786f, 1.2786711852544426f, 1.2845232578665133f, 1.2903487900563946f,
1.2961481396815726f, 1.301921656629154f, 1.3076696830622025f, 1.3133925536563702f,
1.3190905958272925f, 1.3247641299491775f, 1.3304134695650076f, 1.3360389215887394f,
1.3416407864998743f, 1.3472193585307484f, 1.3527749258468689f, 1.358307770720613f,
1.363818169698586f, 1.3693063937629157f, 1.3747727084867525f, 1.3802173741842267f,
1.3856406460551023f, 1.391042774324356f, 1.3964240043768947f, 1.4017845768876191f,
1.4071247279470294f, 1.412444689182554f
};
float SND_InverseSpatializationLScaleLUT[126] = {
1.4142135623730951f, 1.408900280360537f, 1.40356688476182f, 1.3982131454109563f,
1.3928388277184118f, 1.3874436925511606f, 1.3820274961085253f, 1.3765899897936205f,
1.3711309200802089f, 1.3656500283747661f, 1.3601470508735443f, 1.3546217184144067f,
1.349073756323204f, 1.34350288425444f, 1.3379088160259651f, 1.3322912594474228f,
1.3266499161421599f, 1.3209844813622904f, 1.3152946437965904f, 1.3095800853708794f,
1.3038404810405297f, 1.2980754985747167f, 1.2922847983320085f, 1.2864680330268607f,
1.2806248474865696f, 1.2747548783981961f, 1.268857754044952f, 1.2629330940315087f,
1.2569805089976533f, 1.2509996003196802f, 1.2449899597988732f, 1.2389511693363866f,
1.232882800593795f, 1.2267844146385294f, 1.22065556157337f, 1.2144957801491119f,
1.208304597359457f, 1.2020815280171306f, 1.1958260743101397f, 1.1895377253370318f,
1.183215956619923f, 1.1768602295939816f, 1.1704699910719623f, 1.1640446726822813f,
1.1575836902790222f, 1.1510864433221335f, 1.1445523142259595f, 1.137980667674104f,
1.1313708498984758f, 1.124722187920199f, 1.1180339887498945f, 1.111305538544643f,
1.1045361017187258f, 1.097724920005007f, 1.090871211463571f, 1.0839741694339398f,
1.0770329614269005f, 1.0700467279516344f, 1.0630145812734646f, 1.0559356040971435f,
1.0488088481701512f, 1.0416333327999825f, 1.0344080432788596f, 1.0271319292087064f,
1.0198039027185566f, 1.012422836565829f, 1.0049875621120887f, 0.9974968671629998f,
0.9899494936611661f, 0.9823441352194247f, 0.974679434480896f, 0.9669539802906855f,
0.9591663046625435f, 0.951314879522022f, 0.94339811320566f, 0.9354143466934849f,
0.9273618495495699f, 0.9192388155425113f, 0.9110433579144295f, 0.902773504263389f,
0.8944271909999154f, 0.886002257333467f, 0.8774964387392117f, 0.8689073598491378f,
0.8602325267042622f, 0.8514693182963196f, 0.8426149773176353f, 0.8336666000266528f,
0.8246211251235316f, 0.8154753215150039f, 0.8062257748298544f, 0.7968688725254608f,
0.7874007874011805f, 0.7778174593052016f, 0.7681145747868602f, 0.7582875444051543f,
0.7483314773547876f, 0.7382411530116693f, 0.728010988928051f, 0.7176350047203655f,
0.7071067811865467f, 0.6964194138592051f, 0.6855654600401035f, 0.6745368781616012f,
0.663324958071079f, 0.651920240520264f, 0.6403124237432839f, 0.6284902544988258f,
0.6164414002968966f, 0.6041522986797276f, 0.5916079783099606f, 0.5787918451395102f,
0.5656854249492369f, 0.5522680508593619f, 0.5385164807134492f, 0.5244044240850745f,
0.5099019513592772f, 0.4949747468305819f, 0.4795831523312705f, 0.46368092477478373f,
0.4472135954999564f, 0.4301162633521297f, 0.41231056256176435f, 0.39370039370058874f,
0.3741657386773922f, 0.35355339059327173f, 0.3316624790355378f, 0.30822070014844644f,
0.2828427124746164f, 0.2549509756796363f, 0.2236067977499756f, 0.187082869338693f,
0.14142135623730406f, 0.07071067811864379f
};
#endif /* __QUAKE_SOUND__ */ #endif /* __QUAKE_SOUND__ */

13
source/snd_dma.c
View file

@ -412,16 +412,9 @@ void SND_Spatialize (channel_t *ch)
dist = VectorNormalize(source_vec) * ch->dist_mult; dist = VectorNormalize(source_vec) * ch->dist_mult;
dot = DotProduct(listener_right, source_vec); dot = DotProduct(listener_right, source_vec);
if (shm->channels == 1) int dot_index = (dot + 1) * 63;
{ rscale = SND_InverseSpatializationRScaleLUT[dot_index];
rscale = 1.0; lscale = SND_InverseSpatializationLScaleLUT[dot_index];
lscale = 1.0;
}
else
{
rscale = 1.0 + dot;
lscale = 1.0 - dot;
}
// add in distance effect // add in distance effect
scale = (1.0 - dist) * rscale; scale = (1.0 - dist) * rscale;