mirror of https://github.com/UberGames/MD3View.git
243 lines
7.2 KiB
C
Executable File
243 lines
7.2 KiB
C
Executable File
/*
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Copyright (C) 2010 Matthew Baranowski, Sander van Rossen & Raven software.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef MODVIEW
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#include "stdafx.h"
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#endif
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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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//
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#include "MatComp.h"
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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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