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raze/source/build/src/voxmodel.cpp
pogokeen a364b7bbfd Polymost palette-indexed texture rendering 
git-svn-id: https://svn.eduke32.com/eduke32@6776 1a8010ca-5511-0410-912e-c29ae57300e0
2018-03-21 20:41:26 +00:00

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//--------------------------------------- VOX LIBRARY BEGINS ---------------------------------------
#ifdef USE_OPENGL
#include "compat.h"
#include "build.h"
#include "glad/glad.h"
#include "pragmas.h"
#include "baselayer.h"
#include "engine_priv.h"
#include "hightile.h"
#include "polymost.h"
#include "texcache.h"
#include "mdsprite.h"
#include "cache1d.h"
#include "kplib.h"
#include "palette.h"
//For loading/conversion only
static vec3_t voxsiz;
static int32_t yzsiz, *vbit = 0; //vbit: 1 bit per voxel: 0=air,1=solid
static vec3f_t voxpiv;
static int32_t *vcolhashead = 0, vcolhashsizm1;
typedef struct { int32_t p, c, n; } voxcol_t;
static voxcol_t *vcol = 0; int32_t vnum = 0, vmax = 0;
typedef struct { int16_t x, y; } spoint2d;
static spoint2d *shp;
static int32_t *shcntmal, *shcnt = 0, shcntp;
static int32_t mytexo5, *zbit, gmaxx, gmaxy, garea, pow2m1[33];
static voxmodel_t *gvox;
//pitch must equal xsiz*4
uint32_t gloadtex(int32_t *picbuf, int32_t xsiz, int32_t ysiz, int32_t is8bit, int32_t dapal)
{
const char *const cptr = &britable[gammabrightness ? 0 : curbrightness][0];
// Correct for GL's RGB order; also apply gamma here:
const coltype *const pic = (const coltype *)picbuf;
coltype *pic2 = (coltype *)Xmalloc(xsiz*ysiz*sizeof(coltype));
if (!is8bit)
{
for (bssize_t i=xsiz*ysiz-1; i>=0; i--)
{
pic2[i].b = cptr[pic[i].r];
pic2[i].g = cptr[pic[i].g];
pic2[i].r = cptr[pic[i].b];
pic2[i].a = 255;
}
}
else
{
if (palookup[dapal] == NULL)
dapal = 0;
for (bssize_t i=xsiz*ysiz-1; i>=0; i--)
{
const int32_t ii = palookup[dapal][pic[i].a];
pic2[i].b = cptr[curpalette[ii].b];
pic2[i].g = cptr[curpalette[ii].g];
pic2[i].r = cptr[curpalette[ii].r];
pic2[i].a = 255;
}
}
uint32_t rtexid;
glGenTextures(1, (GLuint *) &rtexid);
glBindTexture(GL_TEXTURE_2D, rtexid);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, 4, xsiz, ysiz, 0, GL_RGBA, GL_UNSIGNED_BYTE, (char *) pic2);
Bfree(pic2);
return rtexid;
}
static int32_t getvox(int32_t x, int32_t y, int32_t z)
{
z += x*yzsiz + y*voxsiz.z;
for (x=vcolhashead[(z*214013)&vcolhashsizm1]; x>=0; x=vcol[x].n)
if (vcol[x].p == z)
return vcol[x].c;
return 0x808080;
}
static void putvox(int32_t x, int32_t y, int32_t z, int32_t col)
{
if (vnum >= vmax)
{
vmax = max(vmax<<1, 4096);
vcol = (voxcol_t *)Xrealloc(vcol, vmax*sizeof(voxcol_t));
}
z += x*yzsiz + y*voxsiz.z;
vcol[vnum].p = z; z = (z*214013)&vcolhashsizm1;
vcol[vnum].c = col;
vcol[vnum].n = vcolhashead[z]; vcolhashead[z] = vnum++;
}
//Set all bits in vbit from (x,y,z0) to (x,y,z1-1) to 0's
#if 0
static void setzrange0(int32_t *lptr, int32_t z0, int32_t z1)
{
if (!((z0^z1)&~31)) { lptr[z0>>5] &= ((~-(1<<SHIFTMOD32(z0)))|-(1<<SHIFTMOD32(z1))); return; }
int32_t z = (z0>>5), ze = (z1>>5);
lptr[z] &=~-(1<<SHIFTMOD32(z0));
for (z++; z<ze; z++) lptr[z] = 0;
lptr[z] &= -(1<<SHIFTMOD32(z1));
}
#endif
//Set all bits in vbit from (x,y,z0) to (x,y,z1-1) to 1's
static void setzrange1(int32_t *lptr, int32_t z0, int32_t z1)
{
if (!((z0^z1)&~31)) { lptr[z0>>5] |= ((~-(1<<SHIFTMOD32(z1)))&-(1<<SHIFTMOD32(z0))); return; }
int32_t z = (z0>>5), ze = (z1>>5);
lptr[z] |= -(1<<SHIFTMOD32(z0));
for (z++; z<ze; z++) lptr[z] = -1;
lptr[z] |=~-(1<<SHIFTMOD32(z1));
}
static int32_t isrectfree(int32_t x0, int32_t y0, int32_t dx, int32_t dy)
{
#if 0
int32_t i, j, x;
i = y0*gvox->mytexx + x0;
for (dy=0; dy; dy--, i+=gvox->mytexx)
for (x=0; x<dx; x++) { j = i+x; if (zbit[j>>5]&(1<<SHIFTMOD32(j))) return 0; }
#else
int32_t i = y0*mytexo5 + (x0>>5);
dx += x0-1;
const int32_t c = (dx>>5) - (x0>>5);
int32_t m = ~pow2m1[x0&31];
const int32_t m1 = pow2m1[(dx&31)+1];
if (!c)
{
for (m &= m1; dy; dy--, i += mytexo5)
if (zbit[i]&m)
return 0;
}
else
{
for (; dy; dy--, i += mytexo5)
{
if (zbit[i]&m)
return 0;
int32_t x;
for (x=1; x<c; x++)
if (zbit[i+x])
return 0;
if (zbit[i+x]&m1)
return 0;
}
}
#endif
return 1;
}
static void setrect(int32_t x0, int32_t y0, int32_t dx, int32_t dy)
{
#if 0
int32_t i, j, y;
i = y0*gvox->mytexx + x0;
for (y=0; y<dy; y++, i+=gvox->mytexx)
for (x=0; x<dx; x++) { j = i+x; zbit[j>>5] |= (1<<SHIFTMOD32(j)); }
#else
int32_t i = y0*mytexo5 + (x0>>5);
dx += x0-1;
const int32_t c = (dx>>5) - (x0>>5);
int32_t m = ~pow2m1[x0&31];
const int32_t m1 = pow2m1[(dx&31)+1];
if (!c)
{
for (m &= m1; dy; dy--, i += mytexo5)
zbit[i] |= m;
}
else
{
for (; dy; dy--, i += mytexo5)
{
zbit[i] |= m;
int32_t x;
for (x=1; x<c; x++)
zbit[i+x] = -1;
zbit[i+x] |= m1;
}
}
#endif
}
static void cntquad(int32_t x0, int32_t y0, int32_t z0, int32_t x1, int32_t y1, int32_t z1,
int32_t x2, int32_t y2, int32_t z2, int32_t face)
{
UNREFERENCED_PARAMETER(x1);
UNREFERENCED_PARAMETER(y1);
UNREFERENCED_PARAMETER(z1);
UNREFERENCED_PARAMETER(face);
int32_t x = labs(x2-x0), y = labs(y2-y0), z = labs(z2-z0);
if (x == 0)
x = z;
else if (y == 0)
y = z;
if (x < y) { z = x; x = y; y = z; }
shcnt[y*shcntp+x]++;
if (x > gmaxx) gmaxx = x;
if (y > gmaxy) gmaxy = y;
garea += (x+(VOXBORDWIDTH<<1)) * (y+(VOXBORDWIDTH<<1));
gvox->qcnt++;
}
static void addquad(int32_t x0, int32_t y0, int32_t z0, int32_t x1, int32_t y1, int32_t z1,
int32_t x2, int32_t y2, int32_t z2, int32_t face)
{
int32_t i;
int32_t x = labs(x2-x0), y = labs(y2-y0), z = labs(z2-z0);
if (x == 0) { x = y; y = z; i = 0; }
else if (y == 0) { y = z; i = 1; }
else i = 2;
if (x < y) { z = x; x = y; y = z; i += 3; }
z = shcnt[y*shcntp+x]++;
int32_t *lptr = &gvox->mytex[(shp[z].y+VOXBORDWIDTH)*gvox->mytexx +
(shp[z].x+VOXBORDWIDTH)];
int32_t nx = 0, ny = 0, nz = 0;
switch (face)
{
case 0:
ny = y1; x2 = x0; x0 = x1; x1 = x2; break;
case 1:
ny = y0; y0++; y1++; y2++; break;
case 2:
nz = z1; y0 = y2; y2 = y1; y1 = y0; z0++; z1++; z2++; break;
case 3:
nz = z0; break;
case 4:
nx = x1; y2 = y0; y0 = y1; y1 = y2; x0++; x1++; x2++; break;
case 5:
nx = x0; break;
}
for (bssize_t yy=0; yy<y; yy++, lptr+=gvox->mytexx)
for (bssize_t xx=0; xx<x; xx++)
{
switch (face)
{
case 0:
if (i < 3) { nx = x1+x-1-xx; nz = z1+yy; } //back
else { nx = x1+y-1-yy; nz = z1+xx; }
break;
case 1:
if (i < 3) { nx = x0+xx; nz = z0+yy; } //front
else { nx = x0+yy; nz = z0+xx; }
break;
case 2:
if (i < 3) { nx = x1-x+xx; ny = y1-1-yy; } //bot
else { nx = x1-1-yy; ny = y1-1-xx; }
break;
case 3:
if (i < 3) { nx = x0+xx; ny = y0+yy; } //top
else { nx = x0+yy; ny = y0+xx; }
break;
case 4:
if (i < 3) { ny = y1+x-1-xx; nz = z1+yy; } //right
else { ny = y1+y-1-yy; nz = z1+xx; }
break;
case 5:
if (i < 3) { ny = y0+xx; nz = z0+yy; } //left
else { ny = y0+yy; nz = z0+xx; }
break;
}
lptr[xx] = getvox(nx, ny, nz);
}
//Extend borders horizontally
for (bssize_t yy=VOXBORDWIDTH; yy<y+VOXBORDWIDTH; yy++)
for (bssize_t xx=0; xx<VOXBORDWIDTH; xx++)
{
lptr = &gvox->mytex[(shp[z].y+yy)*gvox->mytexx + shp[z].x];
lptr[xx] = lptr[VOXBORDWIDTH];
lptr[xx+x+VOXBORDWIDTH] = lptr[x-1+VOXBORDWIDTH];
}
//Extend borders vertically
for (bssize_t yy=0; yy<VOXBORDWIDTH; yy++)
{
Bmemcpy(&gvox->mytex[(shp[z].y+yy)*gvox->mytexx + shp[z].x],
&gvox->mytex[(shp[z].y+VOXBORDWIDTH)*gvox->mytexx + shp[z].x],
(x+(VOXBORDWIDTH<<1))<<2);
Bmemcpy(&gvox->mytex[(shp[z].y+y+yy+VOXBORDWIDTH)*gvox->mytexx + shp[z].x],
&gvox->mytex[(shp[z].y+y-1+VOXBORDWIDTH)*gvox->mytexx + shp[z].x],
(x+(VOXBORDWIDTH<<1))<<2);
}
voxrect_t *const qptr = &gvox->quad[gvox->qcnt];
qptr->v[0].x = x0; qptr->v[0].y = y0; qptr->v[0].z = z0;
qptr->v[1].x = x1; qptr->v[1].y = y1; qptr->v[1].z = z1;
qptr->v[2].x = x2; qptr->v[2].y = y2; qptr->v[2].z = z2;
for (bssize_t j=0; j<3; j++)
{
qptr->v[j].u = shp[z].x+VOXBORDWIDTH;
qptr->v[j].v = shp[z].y+VOXBORDWIDTH;
}
if (i < 3)
qptr->v[1].u += x;
else
qptr->v[1].v += y;
qptr->v[2].u += x;
qptr->v[2].v += y;
qptr->v[3].u = qptr->v[0].u - qptr->v[1].u + qptr->v[2].u;
qptr->v[3].v = qptr->v[0].v - qptr->v[1].v + qptr->v[2].v;
qptr->v[3].x = qptr->v[0].x - qptr->v[1].x + qptr->v[2].x;
qptr->v[3].y = qptr->v[0].y - qptr->v[1].y + qptr->v[2].y;
qptr->v[3].z = qptr->v[0].z - qptr->v[1].z + qptr->v[2].z;
if (gvox->qfacind[face] < 0)
gvox->qfacind[face] = gvox->qcnt;
gvox->qcnt++;
}
static inline int32_t isolid(int32_t x, int32_t y, int32_t z)
{
if ((uint32_t)x >= (uint32_t)voxsiz.x) return 0;
if ((uint32_t)y >= (uint32_t)voxsiz.y) return 0;
if ((uint32_t)z >= (uint32_t)voxsiz.z) return 0;
z += x*yzsiz + y*voxsiz.z;
return vbit[z>>5] & (1<<SHIFTMOD32(z));
}
static FORCE_INLINE int isair(int32_t i)
{
return !(vbit[i>>5] & (1<<SHIFTMOD32(i)));
}
static voxmodel_t *vox2poly()
{
int32_t i, j;
gvox = (voxmodel_t *)Xmalloc(sizeof(voxmodel_t));
memset(gvox, 0, sizeof(voxmodel_t));
{
//x is largest dimension, y is 2nd largest dimension
int32_t x = voxsiz.x, y = voxsiz.y, z = voxsiz.z;
if (x < y && x < z)
x = z;
else if (y < z)
y = z;
if (x < y)
{
z = x;
x = y;
y = z;
}
shcntp = x;
i = x*y*sizeof(int32_t);
}
shcntmal = (int32_t *)Xmalloc(i);
memset(shcntmal, 0, i);
shcnt = &shcntmal[-shcntp-1];
gmaxx = gmaxy = garea = 0;
if (pow2m1[32] != -1)
{
for (i=0; i<32; i++)
pow2m1[i] = (1u<<i)-1;
pow2m1[32] = -1;
}
for (i=0; i<7; i++)
gvox->qfacind[i] = -1;
i = (max(voxsiz.y, voxsiz.z)+1)<<2;
int32_t *const bx0 = (int32_t *)Xmalloc(i<<1);
int32_t *const by0 = (int32_t *)(((intptr_t)bx0)+i);
int32_t ov, oz=0;
for (bssize_t cnt=0; cnt<2; cnt++)
{
void (*daquad)(int32_t, int32_t, int32_t, int32_t, int32_t, int32_t, int32_t, int32_t, int32_t, int32_t) =
cnt == 0 ? cntquad : addquad;
gvox->qcnt = 0;
memset(by0, -1, (max(voxsiz.y, voxsiz.z)+1)<<2);
int32_t v = 0;
for (i=-1; i<=1; i+=2)
for (bssize_t y=0; y<voxsiz.y; y++)
for (bssize_t x=0; x<=voxsiz.x; x++)
for (bssize_t z=0; z<=voxsiz.z; z++)
{
ov = v; v = (isolid(x, y, z) && (!isolid(x, y+i, z)));
if ((by0[z] >= 0) && ((by0[z] != oz) || (v >= ov)))
{
daquad(bx0[z], y, by0[z], x, y, by0[z], x, y, z, i>=0);
by0[z] = -1;
}
if (v > ov) oz = z;
else if ((v < ov) && (by0[z] != oz)) { bx0[z] = x; by0[z] = oz; }
}
for (i=-1; i<=1; i+=2)
for (bssize_t z=0; z<voxsiz.z; z++)
for (bssize_t x=0; x<=voxsiz.x; x++)
for (bssize_t y=0; y<=voxsiz.y; y++)
{
ov = v; v = (isolid(x, y, z) && (!isolid(x, y, z-i)));
if ((by0[y] >= 0) && ((by0[y] != oz) || (v >= ov)))
{
daquad(bx0[y], by0[y], z, x, by0[y], z, x, y, z, (i>=0)+2);
by0[y] = -1;
}
if (v > ov) oz = y;
else if ((v < ov) && (by0[y] != oz)) { bx0[y] = x; by0[y] = oz; }
}
for (i=-1; i<=1; i+=2)
for (bssize_t x=0; x<voxsiz.x; x++)
for (bssize_t y=0; y<=voxsiz.y; y++)
for (bssize_t z=0; z<=voxsiz.z; z++)
{
ov = v; v = (isolid(x, y, z) && (!isolid(x-i, y, z)));
if ((by0[z] >= 0) && ((by0[z] != oz) || (v >= ov)))
{
daquad(x, bx0[z], by0[z], x, y, by0[z], x, y, z, (i>=0)+4);
by0[z] = -1;
}
if (v > ov) oz = z;
else if ((v < ov) && (by0[z] != oz)) { bx0[z] = y; by0[z] = oz; }
}
if (!cnt)
{
shp = (spoint2d *)Xmalloc(gvox->qcnt*sizeof(spoint2d));
int32_t sc = 0;
for (bssize_t y=gmaxy; y; y--)
for (bssize_t x=gmaxx; x>=y; x--)
{
i = shcnt[y*shcntp+x]; shcnt[y*shcntp+x] = sc; //shcnt changes from counter to head index
for (; i>0; i--)
{
shp[sc].x = x;
shp[sc].y = y;
sc++;
}
}
for (gvox->mytexx=32; gvox->mytexx<(gmaxx+(VOXBORDWIDTH<<1)); gvox->mytexx<<=1)
/* do nothing */;
for (gvox->mytexy=32; gvox->mytexy<(gmaxy+(VOXBORDWIDTH<<1)); gvox->mytexy<<=1)
/* do_nothing */;
while (gvox->mytexx*gvox->mytexy*8 < garea*9) //This should be sufficient to fit most skins...
{
skindidntfit:
if (gvox->mytexx <= gvox->mytexy)
gvox->mytexx <<= 1;
else
gvox->mytexy <<= 1;
}
mytexo5 = gvox->mytexx>>5;
i = ((gvox->mytexx*gvox->mytexy+31)>>5)<<2;
zbit = (int32_t *)Xmalloc(i);
memset(zbit, 0, i);
v = gvox->mytexx*gvox->mytexy;
for (bssize_t z=0; z<sc; z++)
{
const int32_t dx = shp[z].x + (VOXBORDWIDTH<<1);
const int32_t dy = shp[z].y + (VOXBORDWIDTH<<1);
i = v;
int32_t x0, y0;
do
{
#if (VOXUSECHAR != 0)
x0 = ((rand()&32767)*(min(gvox->mytexx, 255)-dx))>>15;
y0 = ((rand()&32767)*(min(gvox->mytexy, 255)-dy))>>15;
#else
x0 = ((rand()&32767)*(gvox->mytexx+1-dx))>>15;
y0 = ((rand()&32767)*(gvox->mytexy+1-dy))>>15;
#endif
i--;
if (i < 0) //Time-out! Very slow if this happens... but at least it still works :P
{
Bfree(zbit);
//Re-generate shp[].x/y (box sizes) from shcnt (now head indices) for next pass :/
j = 0;
for (bssize_t y=gmaxy; y; y--)
for (bssize_t x=gmaxx; x>=y; x--)
{
i = shcnt[y*shcntp+x];
for (; j<i; j++)
{
shp[j].x = x0;
shp[j].y = y0;
}
x0 = x;
y0 = y;
}
for (; j<sc; j++)
{
shp[j].x = x0;
shp[j].y = y0;
}
goto skindidntfit;
}
} while (!isrectfree(x0, y0, dx, dy));
while (y0 && isrectfree(x0, y0-1, dx, 1))
y0--;
while (x0 && isrectfree(x0-1, y0, 1, dy))
x0--;
setrect(x0, y0, dx, dy);
shp[z].x = x0; shp[z].y = y0; //Overwrite size with top-left location
}
gvox->quad = (voxrect_t *)Xmalloc(gvox->qcnt*sizeof(voxrect_t));
gvox->mytex = (int32_t *)Xmalloc(gvox->mytexx*gvox->mytexy*sizeof(int32_t));
}
}
Bfree(shp); Bfree(zbit); Bfree(bx0);
return gvox;
}
static void alloc_vcolhashead(void)
{
vcolhashead = (int32_t *)Xmalloc((vcolhashsizm1+1)*sizeof(int32_t));
memset(vcolhashead, -1, (vcolhashsizm1+1)*sizeof(int32_t));
}
static void alloc_vbit(void)
{
yzsiz = voxsiz.y*voxsiz.z;
int32_t i = ((voxsiz.x*yzsiz+31)>>3)+1;
vbit = (int32_t *)Xmalloc(i);
memset(vbit, 0, i);
}
static void read_pal(int32_t fil, int32_t pal[256])
{
klseek(fil, -768, SEEK_END);
for (bssize_t i=0; i<256; i++)
{
char c[3];
kread(fil, c, 3);
//#if B_BIG_ENDIAN != 0
pal[i] = B_LITTLE32((c[0]<<18) + (c[1]<<10) + (c[2]<<2) + (i<<24));
//#endif
}
}
static int32_t loadvox(const char *filnam)
{
const int32_t fil = kopen4load(filnam, 0);
if (fil < 0)
return -1;
kread(fil, &voxsiz, sizeof(vec3_t));
#if B_BIG_ENDIAN != 0
voxsiz.x = B_LITTLE32(voxsiz.x);
voxsiz.y = B_LITTLE32(voxsiz.y);
voxsiz.z = B_LITTLE32(voxsiz.z);
#endif
voxpiv.x = (float)voxsiz.x * .5f;
voxpiv.y = (float)voxsiz.y * .5f;
voxpiv.z = (float)voxsiz.z * .5f;
int32_t pal[256];
read_pal(fil, pal);
pal[255] = -1;
vcolhashsizm1 = 8192-1;
alloc_vcolhashead();
alloc_vbit();
char *const tbuf = (char *)Xmalloc(voxsiz.z*sizeof(uint8_t));
klseek(fil, 12, SEEK_SET);
for (bssize_t x=0; x<voxsiz.x; x++)
for (bssize_t y=0, j=x*yzsiz; y<voxsiz.y; y++, j+=voxsiz.z)
{
kread(fil, tbuf, voxsiz.z);
for (bssize_t z=voxsiz.z-1; z>=0; z--)
if (tbuf[z] != 255)
{
const int32_t i = j+z;
vbit[i>>5] |= (1<<SHIFTMOD32(i));
}
}
klseek(fil, 12, SEEK_SET);
for (bssize_t x=0; x<voxsiz.x; x++)
for (bssize_t y=0, j=x*yzsiz; y<voxsiz.y; y++, j+=voxsiz.z)
{
kread(fil, tbuf, voxsiz.z);
for (bssize_t z=0; z<voxsiz.z; z++)
{
if (tbuf[z] == 255)
continue;
if (!x || !y || !z || x == voxsiz.x-1 || y == voxsiz.y-1 || z == voxsiz.z-1)
{
putvox(x, y, z, pal[tbuf[z]]);
continue;
}
const int32_t k = j+z;
if (isair(k-yzsiz) || isair(k+yzsiz) ||
isair(k-voxsiz.z) || isair(k+voxsiz.z) ||
isair(k-1) || isair(k+1))
{
putvox(x, y, z, pal[tbuf[z]]);
continue;
}
}
}
Bfree(tbuf);
kclose(fil);
return 0;
}
static int32_t loadkvx(const char *filnam)
{
int32_t i, mip1leng;
const int32_t fil = kopen4load(filnam, 0);
if (fil < 0)
return -1;
kread(fil, &mip1leng, 4); mip1leng = B_LITTLE32(mip1leng);
kread(fil, &voxsiz, sizeof(vec3_t));
#if B_BIG_ENDIAN != 0
voxsiz.x = B_LITTLE32(voxsiz.x);
voxsiz.y = B_LITTLE32(voxsiz.y);
voxsiz.z = B_LITTLE32(voxsiz.z);
#endif
kread(fil, &i, 4); voxpiv.x = (float)B_LITTLE32(i)*(1.f/256.f);
kread(fil, &i, 4); voxpiv.y = (float)B_LITTLE32(i)*(1.f/256.f);
kread(fil, &i, 4); voxpiv.z = (float)B_LITTLE32(i)*(1.f/256.f);
klseek(fil, (voxsiz.x+1)<<2, SEEK_CUR);
const int32_t ysizp1 = voxsiz.y+1;
i = voxsiz.x*ysizp1*sizeof(int16_t);
uint16_t *xyoffs = (uint16_t *)Xmalloc(i);
kread(fil, xyoffs, i);
for (i=i/sizeof(int16_t)-1; i>=0; i--)
xyoffs[i] = B_LITTLE16(xyoffs[i]);
int32_t pal[256];
read_pal(fil, pal);
alloc_vbit();
for (vcolhashsizm1=4096; vcolhashsizm1<(mip1leng>>1); vcolhashsizm1<<=1)
{
/* do nothing */
}
vcolhashsizm1--; //approx to numvoxs!
alloc_vcolhashead();
klseek(fil, 28+((voxsiz.x+1)<<2)+((ysizp1*voxsiz.x)<<1), SEEK_SET);
i = kfilelength(fil)-ktell(fil);
char *const tbuf = (char *)Xmalloc(i);
kread(fil, tbuf, i);
kclose(fil);
char *cptr = tbuf;
for (bssize_t x=0; x<voxsiz.x; x++) //Set surface voxels to 1 else 0
for (bssize_t y=0, j=x*yzsiz; y<voxsiz.y; y++, j+=voxsiz.z)
{
i = xyoffs[x*ysizp1+y+1] - xyoffs[x*ysizp1+y];
if (!i)
continue;
int32_t z1 = 0;
while (i)
{
const int32_t z0 = cptr[0];
const int32_t k = cptr[1];
cptr += 3;
if (!(cptr[-1]&16))
setzrange1(vbit, j+z1, j+z0);
i -= k+3;
z1 = z0+k;
setzrange1(vbit, j+z0, j+z1); // PK: oob in AMC TC dev if vbit alloc'd w/o +1
for (bssize_t z=z0; z<z1; z++)
putvox(x, y, z, pal[*cptr++]);
}
}
Bfree(tbuf);
Bfree(xyoffs);
return 0;
}
static int32_t loadkv6(const char *filnam)
{
int32_t i;
const int32_t fil = kopen4load(filnam, 0);
if (fil < 0)
return -1;
kread(fil, &i, 4);
if (B_LITTLE32(i) != 0x6c78764b)
{
kclose(fil);
return -1;
} //Kvxl
kread(fil, &voxsiz, sizeof(vec3_t));
#if B_BIG_ENDIAN != 0
voxsiz.x = B_LITTLE32(voxsiz.x);
voxsiz.y = B_LITTLE32(voxsiz.y);
voxsiz.z = B_LITTLE32(voxsiz.z);
#endif
kread(fil, &i, 4); voxpiv.x = (float)B_LITTLE32(i);
kread(fil, &i, 4); voxpiv.y = (float)B_LITTLE32(i);
kread(fil, &i, 4); voxpiv.z = (float)B_LITTLE32(i);
int32_t numvoxs;
kread(fil, &numvoxs, 4); numvoxs = B_LITTLE32(numvoxs);
uint16_t *const ylen = (uint16_t *)Xmalloc(voxsiz.x*voxsiz.y*sizeof(int16_t));
klseek(fil, 32+(numvoxs<<3)+(voxsiz.x<<2), SEEK_SET);
kread(fil, ylen, voxsiz.x*voxsiz.y*sizeof(int16_t));
for (i=voxsiz.x*voxsiz.y-1; i>=0; i--)
ylen[i] = B_LITTLE16(ylen[i]);
klseek(fil, 32, SEEK_SET);
alloc_vbit();
for (vcolhashsizm1=4096; vcolhashsizm1<numvoxs; vcolhashsizm1<<=1)
{
/* do nothing */
}
vcolhashsizm1--;
alloc_vcolhashead();
for (bssize_t x=0; x<voxsiz.x; x++)
for (bssize_t y=0, j=x*yzsiz; y<voxsiz.y; y++, j+=voxsiz.z)
{
int32_t z1 = voxsiz.z;
for (i=ylen[x*voxsiz.y+y]; i>0; i--)
{
char c[8];
kread(fil, c, 8); //b,g,r,a,z_lo,z_hi,vis,dir
const int32_t z0 = B_LITTLE16(B_UNBUF16(&c[4]));
if (!(c[6]&16))
setzrange1(vbit, j+z1, j+z0);
vbit[(j+z0)>>5] |= (1<<SHIFTMOD32(j+z0));
putvox(x, y, z0, B_LITTLE32(B_UNBUF32(&c[0]))&0xffffff);
z1 = z0+1;
}
}
Bfree(ylen);
kclose(fil);
return 0;
}
void voxfree(voxmodel_t *m)
{
if (!m)
return;
DO_FREE_AND_NULL(m->mytex);
DO_FREE_AND_NULL(m->quad);
DO_FREE_AND_NULL(m->texid);
Bfree(m);
}
voxmodel_t *voxload(const char *filnam)
{
int32_t is8bit, ret;
const int32_t i = Bstrlen(filnam)-4;
if (i < 0)
return NULL;
if (!Bstrcasecmp(&filnam[i], ".vox")) { ret = loadvox(filnam); is8bit = 1; }
else if (!Bstrcasecmp(&filnam[i], ".kvx")) { ret = loadkvx(filnam); is8bit = 1; }
else if (!Bstrcasecmp(&filnam[i], ".kv6")) { ret = loadkv6(filnam); is8bit = 0; }
//else if (!Bstrcasecmp(&filnam[i],".vxl")) { ret = loadvxl(filnam); is8bit = 0; }
else return NULL;
voxmodel_t *const vm = (ret >= 0) ? vox2poly() : NULL;
if (vm)
{
vm->mdnum = 1; //VOXel model id
vm->scale = vm->bscale = 1.f;
vm->siz.x = voxsiz.x; vm->siz.y = voxsiz.y; vm->siz.z = voxsiz.z;
vm->piv.x = voxpiv.x; vm->piv.y = voxpiv.y; vm->piv.z = voxpiv.z;
vm->is8bit = is8bit;
vm->texid = (uint32_t *)Xcalloc(MAXPALOOKUPS, sizeof(uint32_t));
}
DO_FREE_AND_NULL(shcntmal);
DO_FREE_AND_NULL(vbit);
DO_FREE_AND_NULL(vcol);
vnum = vmax = 0;
DO_FREE_AND_NULL(vcolhashead);
return vm;
}
//Draw voxel model as perfect cubes
int32_t polymost_voxdraw(voxmodel_t *m, const uspritetype *tspr)
{
// float clut[6] = {1.02,1.02,0.94,1.06,0.98,0.98};
float f, g, k0;
if ((intptr_t)m == (intptr_t)(-1)) // hackhackhack
return 0;
if ((tspr->cstat&48)==32)
return 0;
//updateanimation((md2model *)m,tspr);
vec3f_t m0 = { m->scale, m->scale, m->scale };
vec3f_t a0 = { 0, 0, ((globalorientation&8) ? -m->zadd : m->zadd)*m->scale };
//if (globalorientation&8) //y-flipping
//{
// m0.z = -m0.z; a0.z = -a0.z;
// //Add height of 1st frame (use same frame to prevent animation bounce)
// a0.z += m->zsiz*m->scale;
//}
//if (globalorientation&4) { m0.y = -m0.y; a0.y = -a0.y; } //x-flipping
k0 = m->bscale / 64.f;
f = (float) tspr->xrepeat * (256.f/320.f) * k0;
if ((sprite[tspr->owner].cstat&48)==16)
f *= 1.25f;
m0.x *= f; a0.x *= f; f = -f;
m0.y *= f; a0.y *= f;
f = (float) tspr->yrepeat * k0;
m0.z *= f; a0.z *= f;
k0 = (float) tspr->z;
if (globalorientation&128) k0 += (float) ((tilesiz[tspr->picnum].y*tspr->yrepeat)<<1);
f = (65536.f*512.f) / ((float)xdimen*viewingrange);
g = 32.f / ((float)xdimen*gxyaspect);
m0.y *= f; a0.y = (((float)(tspr->x-globalposx)) * (1.f/1024.f) + a0.y) * f;
m0.x *=-f; a0.x = (((float)(tspr->y-globalposy)) * -(1.f/1024.f) + a0.x) * -f;
m0.z *= g; a0.z = (((float)(k0 -globalposz)) * -(1.f/16384.f) + a0.z) * g;
float mat[16];
md3_vox_calcmat_common(tspr, &a0, f, mat);
//Mirrors
if (grhalfxdown10x < 0)
{
mat[0] = -mat[0];
mat[4] = -mat[4];
mat[8] = -mat[8];
mat[12] = -mat[12];
}
if (tspr->extra&TSPR_EXTRA_MDHACK)
{
glDepthFunc(GL_LESS); //NEVER,LESS,(,L)EQUAL,GREATER,(NOT,G)EQUAL,ALWAYS
// glDepthRange(0.0, 0.9999);
}
// glPushAttrib(GL_POLYGON_BIT);
if ((grhalfxdown10x >= 0) /*^ ((globalorientation&8) != 0) ^ ((globalorientation&4) != 0)*/)
glFrontFace(GL_CW);
else
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
glEnable(GL_TEXTURE_2D);
float pc[4];
pc[0] = pc[1] = pc[2] =
(float)(numshades-min(max((globalshade * shadescale)+m->shadeoff, 0), numshades)) / (float)numshades;
hictinting_apply(pc, globalpal);
pc[3] = (tspr->cstat&2) ? glblend[tspr->blend].def[!!(tspr->cstat&512)].alpha : 1.0f;
pc[3] *= 1.0f - spriteext[tspr->owner].alpha;
handle_blend(!!(tspr->cstat & 2), tspr->blend, !!(tspr->cstat & 512));
if ((tspr->cstat&2) || spriteext[tspr->owner].alpha > 0.f || pc[3] < 1.0f)
glEnable(GL_BLEND); //else glDisable(GL_BLEND);
//------------
//transform to Build coords
float omat[16];
Bmemcpy(omat, mat, sizeof(omat));
f = 1.f/64.f;
g = m0.x*f; mat[0] *= g; mat[1] *= g; mat[2] *= g;
g = m0.y*f; mat[4] = omat[8]*g; mat[5] = omat[9]*g; mat[6] = omat[10]*g;
g =-m0.z*f; mat[8] = omat[4]*g; mat[9] = omat[5]*g; mat[10] = omat[6]*g;
//
mat[12] -= (m->piv.x*mat[0] + m->piv.y*mat[4] + (m->piv.z+m->siz.z*.5f)*mat[8]);
mat[13] -= (m->piv.x*mat[1] + m->piv.y*mat[5] + (m->piv.z+m->siz.z*.5f)*mat[9]);
mat[14] -= (m->piv.x*mat[2] + m->piv.y*mat[6] + (m->piv.z+m->siz.z*.5f)*mat[10]);
//
glMatrixMode(GL_MODELVIEW); //Let OpenGL (and perhaps hardware :) handle the matrix rotation
mat[3] = mat[7] = mat[11] = 0.f; mat[15] = 1.f;
glLoadMatrixf(mat);
const float ru = 1.f/((float)m->mytexx);
const float rv = 1.f/((float)m->mytexy);
#if (VOXBORDWIDTH == 0)
uhack[0] = ru*.125; uhack[1] = -uhack[0];
vhack[0] = rv*.125; vhack[1] = -vhack[0];
#endif
const float phack[2] = { 0, 1.f/256.f };
if (!m->texid[globalpal])
m->texid[globalpal] = gloadtex(m->mytex, m->mytexx, m->mytexy, m->is8bit, globalpal);
else
glBindTexture(GL_TEXTURE_2D, m->texid[globalpal]);
polymost_usePaletteIndexing(false);
glBegin(GL_QUADS); // {{{
for (bssize_t i=0, fi=0; i<m->qcnt; i++)
{
if (i == m->qfacind[fi])
{
f = 1 /*clut[fi++]*/;
glColor4f(pc[0]*f, pc[1]*f, pc[2]*f, pc[3]*f);
}
const vert_t *const vptr = &m->quad[i].v[0];
const int32_t xx = vptr[0].x + vptr[2].x;
const int32_t yy = vptr[0].y + vptr[2].y;
const int32_t zz = vptr[0].z + vptr[2].z;
for (bssize_t j=0; j<4; j++)
{
vec3f_t fp;
#if (VOXBORDWIDTH == 0)
glTexCoord2f(((float)vptr[j].u)*ru + uhack[vptr[j].u!=vptr[0].u],
((float)vptr[j].v)*rv + vhack[vptr[j].v!=vptr[0].v]);
#else
glTexCoord2f(((float)vptr[j].u)*ru, ((float)vptr[j].v)*rv);
#endif
fp.x = ((float)vptr[j].x) - phack[xx>vptr[j].x*2] + phack[xx<vptr[j].x*2];
fp.y = ((float)vptr[j].y) - phack[yy>vptr[j].y*2] + phack[yy<vptr[j].y*2];
fp.z = ((float)vptr[j].z) - phack[zz>vptr[j].z*2] + phack[zz<vptr[j].z*2];
glVertex3fv((float *)&fp);
}
}
glEnd(); // }}}
polymost_usePaletteIndexing(true);
//------------
glDisable(GL_CULL_FACE);
// glPopAttrib();
if (tspr->extra&TSPR_EXTRA_MDHACK)
{
glDepthFunc(GL_LESS); //NEVER,LESS,(,L)EQUAL,GREATER,(NOT,G)EQUAL,ALWAYS
// glDepthRange(0.0, 0.99999);
}
glLoadIdentity();
return 1;
}
#endif
//---------------------------------------- VOX LIBRARY ENDS ----------------------------------------
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