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Updated DSP1emu code (inverse function by teuf, fixes on Op03/0D, etc.)

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zsknight
2001-04-25 02:51:36 +00:00
parent d4e4f04bac
commit 961d69c307
1 changed files with 32 additions and 27 deletions
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59
zsnes/src/chips/dsp1emu.c
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@@ -259,23 +259,31 @@ DSPOp00()
#endif
}
short Op10Coefficient;
short Op10Exponent;
short Op10CoefficientR;
short Op10ExponentR;
// To fix...
signed short Op10Coefficient;
signed short Op10Exponent;
signed short Op10CoefficientR;
signed short Op10ExponentR;
float Op10Temp;
DSPOp10()
{
#ifdef DebugDSP1
Log_Message("OP10 NOT IMPLEMENTED");
#endif
Op10ExponentR=-Op10Exponent;
Op10CoefficientR=1/Op10Coefficient;
Op10ExponentR=-Op10Exponent;
Op10Temp = Op10Coefficient / 32768.0;
Op10Temp = 1/Op10Temp;
if (Op10Temp > 0)
while (Op10Temp>=1.0) {
Op10Temp=Op10Temp/2.0;
Op10ExponentR++;
}
else
while (Op10Temp<-1.0) {
Op10Temp=Op10Temp/2.0;
Op10ExponentR++;
}
Op10CoefficientR = Op10Temp*32768;
#ifdef DebugDSP1
Log_Message("OP10 INV %d*2^%d = %d*2^%d", Op10Coefficient, Op10Exponent, Op10CoefficientR, Op10ExponentR);
#endif
}
@@ -484,9 +492,9 @@ DSPOp02()
ReversedLES=1;
Op02LESb=VofAngle+0x4000-(Op02LES-(VofAngle+0x4000));
}
Op02VVA = (short)(Op02LESb * tan((Op02AZS)*6.2832/65536.0));
Op02VVA = (short)(Op02LESb * tan((Op02AZS-0x4000)*6.2832/65536.0));
if ((Op02LESb>=VofAngle) && (Op02LESb<=VofAngle+0x4000)) {
Op02VOF= (short)(Op02LESb * tan((Op02AZS-VofAngle)*6.2832/65536.0));
Op02VOF= (short)(Op02LESb * tan((Op02AZS-0x4000-VofAngle)*6.2832/65536.0));
Op02VVA-=Op02VOF;
}
if (ReversedLES){
@@ -809,10 +817,11 @@ short Op01m;
short Op01Zr;
short Op01Xr;
short Op01Yr;
double sc;
DSPOp01()
{
double zr,yr,xr,sc;
double zr,yr,xr;
zr = ((double)Op01Zr)*6.2832/65536;
yr = ((double)Op01Yr)*6.2832/65536;
@@ -836,10 +845,6 @@ DSPOp01()
sc = ((double)Op01m)/32768.0;
matrixB[0][0]*=sc; matrixB[0][1]*=sc; matrixB[0][2]*=sc;
matrixB[1][0]*=sc; matrixB[1][1]*=sc; matrixB[1][2]*=sc;
matrixB[2][0]*=sc; matrixB[2][1]*=sc; matrixB[2][2]*=sc;
matrixA[0][0]=matrixB[0][0]; matrixA[0][1]=matrixB[0][1]; matrixA[0][2]=matrixB[0][2];
matrixA[1][0]=matrixB[1][0]; matrixA[1][1]=matrixB[1][1]; matrixA[1][2]=matrixB[1][2];
matrixA[2][0]=matrixB[2][0]; matrixA[2][1]=matrixB[2][1]; matrixA[2][2]=matrixB[2][2];
@@ -920,9 +925,9 @@ DSPOp0D()
d2=(b*i-h*c)/det; e2=(a*i-g*c)/det; f2=(a*h-g*b)/det;
g2=(b*f-e*c)/det; h2=(a*f-d*c)/det; i2=(a*e-d*b)/det;
x=Op0DX; y=Op0DY; z=Op0DZ;
Op0DF=(short)((x*a2+y*d2+z*g2)/2);
Op0DL=(short)((x*b2+y*e2+z*h2)/2);
Op0DU=(short)((x*c2+y*f2+z*i2)/2);
Op0DF=(short)((x*a2+y*d2+z*g2)/2*sc);
Op0DL=(short)((x*b2+y*e2+z*h2)/2*sc);
Op0DU=(short)((x*c2+y*f2+z*i2)/2*sc);
#ifdef DebugDSP1
Log_Message("OP0D");
#endif
@@ -960,9 +965,9 @@ DSPOp03()
double F,L,U;
F=Op03F; L=Op03L; U=Op03U;
Op03X=(short)((F*matrixA[0][0]+L*matrixA[1][0]+U*matrixA[2][0])*2);
Op03Y=(short)((F*matrixA[0][1]+L*matrixA[1][1]+U*matrixA[2][1])*2);
Op03Z=(short)((F*matrixA[0][2]+L*matrixA[1][2]+U*matrixA[2][2])*2);
Op03X=(short)((F*matrixA[0][0]+L*matrixA[1][0]+U*matrixA[2][0])/2*sc);
Op03Y=(short)((F*matrixA[0][1]+L*matrixA[1][1]+U*matrixA[2][1])/2*sc);
Op03Z=(short)((F*matrixA[0][2]+L*matrixA[1][2]+U*matrixA[2][2])/2*sc);
#ifdef DebugDSP1
Log_Message("OP03");
#endif