292 lines
7.6 KiB
C
292 lines
7.6 KiB
C
#include "MatComp.h"
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <memory.h> // for memcpy
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#define MC_MASK_X ((1<<(MC_BITS_X))-1)
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#define MC_MASK_Y ((1<<(MC_BITS_Y))-1)
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#define MC_MASK_Z ((1<<(MC_BITS_Z))-1)
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#define MC_MASK_VECT ((1<<(MC_BITS_VECT))-1)
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#define MC_SCALE_VECT (1.0f/(float)((1<<(MC_BITS_VECT-1))-2))
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#define MC_POS_X (0)
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#define MC_SHIFT_X (0)
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#define MC_POS_Y ((((MC_BITS_X))/8))
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#define MC_SHIFT_Y ((((MC_BITS_X)%8)))
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#define MC_POS_Z ((((MC_BITS_X+MC_BITS_Y))/8))
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#define MC_SHIFT_Z ((((MC_BITS_X+MC_BITS_Y)%8)))
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#define MC_POS_V11 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z))/8))
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#define MC_SHIFT_V11 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z)%8)))
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#define MC_POS_V12 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT))/8))
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#define MC_SHIFT_V12 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT)%8)))
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#define MC_POS_V13 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*2))/8))
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#define MC_SHIFT_V13 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*2)%8)))
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#define MC_POS_V21 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*3))/8))
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#define MC_SHIFT_V21 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*3)%8)))
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#define MC_POS_V22 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*4))/8))
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#define MC_SHIFT_V22 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*4)%8)))
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#define MC_POS_V23 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*5))/8))
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#define MC_SHIFT_V23 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*5)%8)))
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#define MC_POS_V31 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*6))/8))
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#define MC_SHIFT_V31 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*6)%8)))
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#define MC_POS_V32 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*7))/8))
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#define MC_SHIFT_V32 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*7)%8)))
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#define MC_POS_V33 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*8))/8))
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#define MC_SHIFT_V33 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*8)%8)))
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void MC_Compress(const float mat[3][4],unsigned char * _comp)
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{
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char comp[MC_COMP_BYTES*2];
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int i,val;
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for (i=0;i<MC_COMP_BYTES;i++)
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comp[i]=0;
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val=(int)(mat[0][3]/MC_SCALE_X);
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val+=1<<(MC_BITS_X-1);
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if (val>=(1<<MC_BITS_X))
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val=(1<<MC_BITS_X)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_X)|=((unsigned int)(val))<<MC_SHIFT_X;
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val=(int)(mat[1][3]/MC_SCALE_Y);
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val+=1<<(MC_BITS_Y-1);
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if (val>=(1<<MC_BITS_Y))
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val=(1<<MC_BITS_Y)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_Y)|=((unsigned int)(val))<<MC_SHIFT_Y;
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val=(int)(mat[2][3]/MC_SCALE_Z);
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val+=1<<(MC_BITS_Z-1);
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if (val>=(1<<MC_BITS_Z))
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val=(1<<MC_BITS_Z)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_Z)|=((unsigned int)(val))<<MC_SHIFT_Z;
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val=(int)(mat[0][0]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V11)|=((unsigned int)(val))<<MC_SHIFT_V11;
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val=(int)(mat[0][1]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V12)|=((unsigned int)(val))<<MC_SHIFT_V12;
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val=(int)(mat[0][2]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V13)|=((unsigned int)(val))<<MC_SHIFT_V13;
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val=(int)(mat[1][0]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V21)|=((unsigned int)(val))<<MC_SHIFT_V21;
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val=(int)(mat[1][1]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V22)|=((unsigned int)(val))<<MC_SHIFT_V22;
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val=(int)(mat[1][2]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V23)|=((unsigned int)(val))<<MC_SHIFT_V23;
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val=(int)(mat[2][0]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V31)|=((unsigned int)(val))<<MC_SHIFT_V31;
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val=(int)(mat[2][1]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V32)|=((unsigned int)(val))<<MC_SHIFT_V32;
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val=(int)(mat[2][2]/MC_SCALE_VECT);
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val+=1<<(MC_BITS_VECT-1);
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if (val>=(1<<MC_BITS_VECT))
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val=(1<<MC_BITS_VECT)-1;
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if (val<0)
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val=0;
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*(unsigned int *)(comp+MC_POS_V33)|=((unsigned int)(val))<<MC_SHIFT_V33;
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// I added this because the line above actually ORs data into an int at the 22 byte (from 0), and therefore technically
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// is writing beyond the 24th byte of the output array. This *should** be harmless if the OR'd-in value doesn't change
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// those bytes, but BoundsChecker says that it's accessing undefined memory (which it does, sometimes). This is probably
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// bad, so...
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memcpy(_comp,comp,MC_COMP_BYTES);
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}
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void MC_UnCompress(float mat[3][4],const unsigned char * comp)
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{
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int val;
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val=(int)((unsigned short *)(comp))[0];
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val-=1<<(MC_BITS_X-1);
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mat[0][3]=((float)(val))*MC_SCALE_X;
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val=(int)((unsigned short *)(comp))[1];
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val-=1<<(MC_BITS_Y-1);
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mat[1][3]=((float)(val))*MC_SCALE_Y;
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val=(int)((unsigned short *)(comp))[2];
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val-=1<<(MC_BITS_Z-1);
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mat[2][3]=((float)(val))*MC_SCALE_Z;
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val=(int)((unsigned short *)(comp))[3];
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val-=1<<(MC_BITS_VECT-1);
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mat[0][0]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[4];
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val-=1<<(MC_BITS_VECT-1);
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mat[0][1]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[5];
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val-=1<<(MC_BITS_VECT-1);
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mat[0][2]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[6];
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val-=1<<(MC_BITS_VECT-1);
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mat[1][0]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[7];
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val-=1<<(MC_BITS_VECT-1);
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mat[1][1]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[8];
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val-=1<<(MC_BITS_VECT-1);
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mat[1][2]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[9];
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val-=1<<(MC_BITS_VECT-1);
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mat[2][0]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[10];
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val-=1<<(MC_BITS_VECT-1);
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mat[2][1]=((float)(val))*MC_SCALE_VECT;
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val=(int)((unsigned short *)(comp))[11];
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val-=1<<(MC_BITS_VECT-1);
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mat[2][2]=((float)(val))*MC_SCALE_VECT;
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}
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void MC_UnCompressQuat(float mat[3][4],const unsigned char * comp)
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{
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float w,x,y,z,f;
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float fTx;
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float fTy;
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float fTz;
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float fTwx;
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float fTwy;
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float fTwz;
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float fTxx;
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float fTxy;
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float fTxz;
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float fTyy;
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float fTyz;
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float fTzz;
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const unsigned short *pwIn = (unsigned short *) comp;
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w = *pwIn++;
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w/=16383.0f;
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w-=2.0f;
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x = *pwIn++;
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x/=16383.0f;
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x-=2.0f;
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y = *pwIn++;
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y/=16383.0f;
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y-=2.0f;
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z = *pwIn++;
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z/=16383.0f;
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z-=2.0f;
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fTx = 2.0f*x;
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fTy = 2.0f*y;
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fTz = 2.0f*z;
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fTwx = fTx*w;
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fTwy = fTy*w;
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fTwz = fTz*w;
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fTxx = fTx*x;
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fTxy = fTy*x;
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fTxz = fTz*x;
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fTyy = fTy*y;
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fTyz = fTz*y;
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fTzz = fTz*z;
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// rot...
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//
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mat[0][0] = 1.0f-(fTyy+fTzz);
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mat[0][1] = fTxy-fTwz;
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mat[0][2] = fTxz+fTwy;
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mat[1][0] = fTxy+fTwz;
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mat[1][1] = 1.0f-(fTxx+fTzz);
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mat[1][2] = fTyz-fTwx;
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mat[2][0] = fTxz-fTwy;
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mat[2][1] = fTyz+fTwx;
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mat[2][2] = 1.0f-(fTxx+fTyy);
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// xlat...
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//
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f = *pwIn++;
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f/=64;
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f-=512;
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mat[0][3] = f;
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f = *pwIn++;
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f/=64;
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f-=512;
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mat[1][3] = f;
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f = *pwIn++;
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f/=64;
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f-=512;
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mat[2][3] = f;
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}
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