ref: b82c104fddd692f82baeb370a3b8e6d058fe3d2b
dir: /marshal.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <thread.h>
#include <draw.h>
#include <memdraw.h>
#include <geometry.h>
#include "graphics.h"
#include "internal.h"
enum {
NaI = ~0ULL, /* not an index */
MTLHTSIZ = 17,
};
typedef struct Curline Curline;
struct Curline
{
char file[256];
usize line;
};
typedef struct IArray IArray;
typedef struct Wirevert Wirevert;
typedef struct Wireprim Wireprim;
typedef struct Mtlentry Mtlentry;
typedef struct Mtltab Mtltab;
struct IArray
{
void *items;
usize nitems;
usize itemsize;
};
struct Wirevert
{
usize p, n, t, c;
};
struct Wireprim
{
int nv;
usize v[3];
usize T;
char *mtlname;
};
struct Mtlentry
{
Material;
ulong idx;
Mtlentry *next;
};
struct Mtltab
{
Mtlentry *mtls[MTLHTSIZ];
int loaded; /* was the table loaded into a model already? */
};
static char *
estrdup(char *s)
{
char *t;
if((t = strdup(s)) == nil)
sysfatal("strdup: %r");
setmalloctag(t, getcallerpc(&s));
return t;
}
static void
error(Curline *l, char *fmt, ...)
{
va_list va;
char buf[ERRMAX], *bp;
bp = seprint(buf, buf + sizeof buf, "%s:%llud ", l->file, l->line);
va_start(va, fmt);
vseprint(bp, buf + sizeof buf, fmt, va);
va_end(va);
werrstr("%s", buf);
}
static IArray *
mkitemarray(usize is)
{
IArray *a;
a = emalloc(sizeof *a);
memset(a, 0, sizeof *a);
a->itemsize = is;
return a;
}
static usize
itemarrayadd(IArray *a, void *i, int dedup)
{
char *p;
usize idx;
if(dedup){
p = a->items;
for(idx = 0; idx < a->nitems; idx++)
if(memcmp(i, &p[idx*a->itemsize], a->itemsize) == 0)
return idx;
}
idx = a->nitems;
a->items = erealloc(a->items, ++a->nitems * a->itemsize);
p = a->items;
p += idx*a->itemsize;
memmove(p, i, a->itemsize);
return idx;
}
static void *
itemarrayget(IArray *a, usize idx)
{
char *p;
if(idx >= a->nitems)
return nil;
p = a->items;
p += idx*a->itemsize;
return p;
}
static void
rmitemarray(IArray *a)
{
free(a->items);
free(a);
}
static uint
hash(char *s)
{
uint h;
h = 0x811c9dc5;
while(*s != 0)
h = (h^(uchar)*s++) * 0x1000193;
return h % MTLHTSIZ;
}
static Mtltab *
mkmtltab(void)
{
Mtltab *t;
t = emalloc(sizeof *t);
memset(t, 0, sizeof *t);
return t;
}
static void
freemtlentry(Mtlentry *m)
{
freetexture(m->normalmap);
freetexture(m->specularmap);
freetexture(m->diffusemap);
free(m->name);
free(m);
}
static Mtlentry *
mtltabadd(Mtltab *t, Material *m)
{
Mtlentry *nm, *mp, *prev;
uint h;
nm = emalloc(sizeof *nm);
memset(nm, 0, sizeof *nm);
nm->Material = *m;
nm->next = nil;
prev = nil;
h = hash(nm->name);
for(mp = t->mtls[h]; mp != nil; prev = mp, mp = mp->next)
if(strcmp(mp->name, nm->name) == 0){
werrstr("material already exists");
return nil;
}
if(prev == nil){
t->mtls[h] = nm;
return nm;
}
prev->next = nm;
return nm;
}
static Mtlentry *
mtltabget(Mtltab *t, char *name)
{
Mtlentry *m;
uint h;
h = hash(name);
for(m = t->mtls[h]; m != nil; m = m->next)
if(strcmp(m->name, name) == 0)
break;
return m;
}
static void
mtltabloadmodel(Model *m, Mtltab *t)
{
Mtlentry *e;
int i;
for(i = 0; i < nelem(t->mtls); i++)
for(e = t->mtls[i]; e != nil; e = e->next)
e->idx = m->addmaterial(m, *e);
t->loaded++;
}
static void
rmmtltab(Mtltab *t)
{
Mtlentry *m, *nm;
int i;
for(i = 0; i < nelem(t->mtls); i++)
for(m = t->mtls[i]; m != nil; m = nm){
nm = m->next;
if(t->loaded)
free(m);
else
freemtlentry(m);
}
}
Model *
readmodel(int fd)
{
Curline curline;
IArray *pa, *na, *ta, *ca, *Ta, *va, *prima;
Mtltab *mtltab;
Mtlentry *me;
Point3 p, n, T;
Point2 t;
Color c;
Vertex v;
Primitive prim;
Material mtl;
Model *m;
Memimage *mi;
Biobuf *bin;
void *vp;
char *line, *f[10], *s, assets[200], buf[256];
usize idx, i;
ulong primidx;
int nf, nv, inamaterial, texfd;
n.w = T.w = 0;
t.w = 1;
m = nil;
bin = Bfdopen(fd, OREAD);
if(bin == nil)
sysfatal("Bfdopen: %r");
pa = mkitemarray(sizeof(p));
na = mkitemarray(sizeof(n));
ta = mkitemarray(sizeof(t));
ca = mkitemarray(sizeof(c));
Ta = mkitemarray(sizeof(T));
va = mkitemarray(sizeof(v));
prima = mkitemarray(sizeof(prim));
mtltab = mkmtltab();
memset(&curline, 0, sizeof curline);
if(fd2path(fd, curline.file, sizeof curline.file) != 0)
sysfatal("fd2path: %r");
if((s = strrchr(curline.file, '/')) != nil){
*s = 0;
snprint(assets, sizeof assets, "%s", curline.file);
memmove(curline.file, s+1, strlen(s+1) + 1);
}else{
assets[0] = '.';
assets[1] = 0;
}
inamaterial = 0;
while((line = Brdline(bin, '\n')) != nil){
line[Blinelen(bin)-1] = 0;
curline.line++;
nf = tokenize(line, f, nelem(f));
if(nf < 1)
continue;
if(inamaterial){
if((s = strchr(f[0], ':')) != nil)
*s = 0;
if(strcmp(f[0], "}") == 0){
if(mtltabadd(mtltab, &mtl) == nil){
error(&curline, "mtltabadd: %r");
goto getout;
}
inamaterial--;
}else if(strcmp(f[0], "ambient") == 0){
if(nf != 4 && nf != 5){
error(&curline, "syntax error");
goto getout;
}
mtl.ambient.r = strtod(f[1], nil);
mtl.ambient.g = strtod(f[2], nil);
mtl.ambient.b = strtod(f[3], nil);
mtl.ambient.a = nf == 5? strtod(f[4], nil): 1;
}else if(strcmp(f[0], "diffuse") == 0){
if(nf != 4 && nf != 5){
error(&curline, "syntax error");
goto getout;
}
mtl.diffuse.r = strtod(f[1], nil);
mtl.diffuse.g = strtod(f[2], nil);
mtl.diffuse.b = strtod(f[3], nil);
mtl.diffuse.a = nf == 5? strtod(f[4], nil): 1;
}else if(strcmp(f[0], "diffusemap") == 0){
if(nf != 2){
error(&curline, "syntax error");
goto getout;
}
if(mtl.diffusemap != nil){
error(&curline, "there is already a diffuse map");
goto getout;
}
snprint(buf, sizeof buf, "%s/%s", assets, f[1]);
texfd = open(buf, OREAD);
if(texfd < 0){
notexture:
error(&curline, "could not read texture '%s'", f[1]);
goto getout;
}
mi = readmemimage(texfd);
if(mi == nil){
close(texfd);
goto notexture;
}
mtl.diffusemap = alloctexture(sRGBTexture, mi);
close(texfd);
}else if(strcmp(f[0], "specular") == 0){
if(nf != 4 && nf != 5){
error(&curline, "syntax error");
goto getout;
}
mtl.specular.r = strtod(f[1], nil);
mtl.specular.g = strtod(f[2], nil);
mtl.specular.b = strtod(f[3], nil);
mtl.specular.a = nf == 5? strtod(f[4], nil): 1;
}else if(strcmp(f[0], "specularmap") == 0){
if(nf != 2){
error(&curline, "syntax error");
goto getout;
}
if(mtl.specularmap != nil){
error(&curline, "there is already a specular map");
goto getout;
}
snprint(buf, sizeof buf, "%s/%s", assets, f[1]);
texfd = open(buf, OREAD);
if(texfd < 0)
goto notexture;
mi = readmemimage(texfd);
if(mi == nil){
close(texfd);
goto notexture;
}
mtl.specularmap = alloctexture(RAWTexture, mi);
close(texfd);
}else if(strcmp(f[0], "shininess") == 0){
if(nf != 2){
error(&curline, "syntax error");
goto getout;
}
mtl.shininess = strtod(f[1], nil);
}else if(strcmp(f[0], "normals") == 0){
if(nf != 2){
error(&curline, "syntax error");
goto getout;
}
if(mtl.normalmap != nil){
error(&curline, "there is already a normal map");
goto getout;
}
snprint(buf, sizeof buf, "%s/%s", assets, f[1]);
texfd = open(buf, OREAD);
if(texfd < 0)
goto notexture;
mi = readmemimage(texfd);
if(mi == nil){
close(texfd);
goto notexture;
}
mtl.normalmap = alloctexture(RAWTexture, mi);
close(texfd);
}else{
error(&curline, "unknown mtl parameter '%s'", f[0]);
goto getout;
}
continue;
}
if(strcmp(f[0], "p") == 0){
if(nf != 4 && nf != 5){
error(&curline, "syntax error");
goto getout;
}
p.x = strtod(f[1], nil);
p.y = strtod(f[2], nil);
p.z = strtod(f[3], nil);
p.w = nf == 5? strtod(f[4], nil): 1;
itemarrayadd(pa, &p, 0);
}else if(strcmp(f[0], "n") == 0){
if(nf != 4){
error(&curline, "syntax error");
goto getout;
}
n.x = strtod(f[1], nil);
n.y = strtod(f[2], nil);
n.z = strtod(f[3], nil);
itemarrayadd(na, &n, 0);
}else if(strcmp(f[0], "t") == 0){
if(nf != 3){
error(&curline, "syntax error");
goto getout;
}
t.x = strtod(f[1], nil);
t.y = strtod(f[2], nil);
itemarrayadd(ta, &t, 0);
}else if(strcmp(f[0], "c") == 0){
if(nf != 4 && nf != 5){
error(&curline, "syntax error");
goto getout;
}
c.r = strtod(f[1], nil);
c.g = strtod(f[2], nil);
c.b = strtod(f[3], nil);
c.a = nf == 5? strtod(f[4], nil): 1;
itemarrayadd(ca, &c, 0);
}else if(strcmp(f[0], "T") == 0){
if(nf != 4){
error(&curline, "syntax error");
goto getout;
}
T.x = strtod(f[1], nil);
T.y = strtod(f[2], nil);
T.z = strtod(f[3], nil);
itemarrayadd(Ta, &T, 0);
}else if(strcmp(f[0], "v") == 0){
if(nf != 5){
error(&curline, "syntax error");
goto getout;
}
memset(&v, 0, sizeof v);
if(strcmp(f[1], "-") == 0){
error(&curline, "vertex has no position");
goto getout;
}
idx = strtoul(f[1], nil, 10);
vp = itemarrayget(pa, idx);
if(vp == nil){
error(&curline, "no position at idx %llud", idx);
goto getout;
}
v.p = *(Point3*)vp;
if(strcmp(f[2], "-") != 0){
idx = strtoul(f[2], nil, 10);
vp = itemarrayget(na, idx);
if(vp == nil){
error(&curline, "no normal at idx %llud", idx);
goto getout;
}
v.n = *(Point3*)vp;
}
if(strcmp(f[3], "-") != 0){
idx = strtoul(f[3], nil, 10);
vp = itemarrayget(ta, idx);
if(vp == nil){
error(&curline, "no texture at idx %llud", idx);
goto getout;
}
v.uv = *(Point2*)vp;
}
if(strcmp(f[4], "-") != 0){
idx = strtoul(f[4], nil, 10);
vp = itemarrayget(ca, idx);
if(vp == nil){
error(&curline, "no color at idx %llud", idx);
goto getout;
}
v.c = *(Color*)vp;
}
itemarrayadd(va, &v, 0);
}else if(strcmp(f[0], "prim") == 0){
if(nf < 3 || nf > 7){
error(&curline, "syntax error");
goto getout;
}
memset(&prim, 0, sizeof prim);
nv = strtoul(f[1], nil, 10);
switch(nv-1){
case PPoint:
prim.type = PPoint;
idx = strtoul(f[2], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil){
novertex:
error(&curline, "no vertex at idx %llud", idx);
goto getout;
}
prim.v[0] = *(Vertex*)vp;
/* ignore 4th field (nf == 4) */
if(nf == 5){
prim.mtl = mtltabget(mtltab, f[4]);
if(prim.mtl == nil){
error(&curline, "material '%s' not found", f[4]);
goto getout;
}
}
break;
case PLine:
prim.type = PLine;
idx = strtoul(f[2], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil)
goto novertex;
prim.v[0] = *(Vertex*)vp;
if(nf < 4){
notenough:
error(&curline, "not enough prim vertices");
goto getout;
}
idx = strtoul(f[3], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil)
goto novertex;
prim.v[1] = *(Vertex*)vp;
/* ignore 5th field (nf == 5) */
if(nf == 6){
prim.mtl = mtltabget(mtltab, f[5]);
if(prim.mtl == nil){
error(&curline, "material '%s' not found", f[5]);
goto getout;
}
}
break;
case PTriangle:
prim.type = PTriangle;
idx = strtoul(f[2], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil)
goto novertex;
prim.v[0] = *(Vertex*)vp;
if(nf < 4)
goto notenough;
idx = strtoul(f[3], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil)
goto novertex;
prim.v[1] = *(Vertex*)vp;
if(nf < 5)
goto notenough;
idx = strtoul(f[4], nil, 10);
vp = itemarrayget(va, idx);
if(vp == nil)
goto novertex;
prim.v[2] = *(Vertex*)vp;
if(nf < 6){
error(&curline, "missing triangle tangent field");
goto getout;
}
if(strcmp(f[5], "-") != 0){
idx = strtoul(f[5], nil, 10);
vp = itemarrayget(Ta, idx);
if(vp == nil){
error(&curline, "no tangent at idx %llud", idx);
goto getout;
}
prim.tangent = *(Point3*)vp;
}
if(nf == 7){
prim.mtl = mtltabget(mtltab, f[6]);
if(prim.mtl == nil){
error(&curline, "material '%s' not found", f[6]);
goto getout;
}
}
break;
default:
error(&curline, "alien primitive detected");
goto getout;
}
itemarrayadd(prima, &prim, 0);
}else if(strcmp(f[0], "mtl") == 0){
if(nf != 3 || strcmp(f[2], "{") != 0){
error(&curline, "syntax error");
goto getout;
}
memset(&mtl, 0, sizeof mtl);
mtl.name = estrdup(f[1]);
inamaterial++;
}else{
error(&curline, "syntax error");
goto getout;
}
}
if(prima->nitems < 1){
werrstr("no primitives no model");
goto getout;
}
m = newmodel();
mtltabloadmodel(m, mtltab);
for(i = 0; i < prima->nitems; i++){
primidx = m->addprim(m, *(Primitive*)itemarrayget(prima, i));
if(m->prims[primidx].mtl != nil){
me = mtltabget(mtltab, m->prims[primidx].mtl->name);
m->prims[primidx].mtl = &m->materials[me->idx];
}
}
getout:
rmitemarray(pa);
rmitemarray(na);
rmitemarray(ta);
rmitemarray(ca);
rmitemarray(Ta);
rmitemarray(va);
rmitemarray(prima);
rmmtltab(mtltab);
Bterm(bin);
return m;
}
static int
Bprintp3(Biobuf *b, Point3 *p)
{
int n;
n = Bprint(b, "%g %g %g", p->x, p->y, p->z);
if(p->w != 1)
n += Bprint(b, " %g", p->w);
n += Bprint(b, "\n");
return n;
}
static int
Bprintp2(Biobuf *b, Point2 *p)
{
int n;
n = Bprint(b, "%g %g", p->x, p->y);
if(p->w != 1)
n += Bprint(b, " %g", p->w);
n += Bprint(b, "\n");
return n;
}
static int
Bprintn3(Biobuf *b, Point3 *p)
{
return Bprint(b, "%g %g %g\n", p->x, p->y, p->z);
}
static int
Bprintp(Biobuf *b, Point3 *p)
{
int n;
n = Bprint(b, "p ");
n += Bprintp3(b, p);
return n;
}
static int
Bprintn(Biobuf *b, Point3 *p)
{
int n;
n = Bprint(b, "n ");
n += Bprintn3(b, p);
return n;
}
static int
Bprintt(Biobuf *b, Point2 *p)
{
int n;
n = Bprint(b, "t ");
n += Bprintp2(b, p);
return n;
}
static int
Bprintc(Biobuf *b, Point3 *p)
{
int n;
n = Bprint(b, "c ");
n += Bprintp3(b, p);
return n;
}
static int
BprintT(Biobuf *b, Point3 *p)
{
int n;
n = Bprint(b, "T ");
n += Bprintn3(b, p);
return n;
}
static int
Bprintidx(Biobuf *b, usize idx)
{
if(idx == NaI)
return Bprint(b, " -");
return Bprint(b, " %llud", idx);
}
static int
Bprintv(Biobuf *b, Wirevert *v)
{
int n;
n = Bprint(b, "v %llud", v->p);
n += Bprintidx(b, v->n);
n += Bprintidx(b, v->t);
n += Bprintidx(b, v->c);
n += Bprint(b, "\n");
return n;
}
static int
Bprintprim(Biobuf *b, Wireprim *p)
{
char *s;
int n, i;
n = Bprint(b, "prim %d", p->nv);
for(i = 0; i < p->nv; i++)
n += Bprintidx(b, p->v[i]);
n += Bprintidx(b, p->T);
if(p->mtlname != nil){
s = quotestrdup(p->mtlname);
if(s == nil)
sysfatal("quotestrdup: %r");
n += Bprint(b, " %s", s);
free(s);
}
n += Bprint(b, "\n");
return n;
}
static int
Bprintmtl(Biobuf *b, Material *m)
{
char *s;
int n;
s = quotestrdup(m->name);
if(s == nil)
sysfatal("quotestrdup: %r");
n = Bprint(b, "mtl %s {\n", s);
free(s);
if(m->ambient.a > 0){
n += Bprint(b, "\tambient: ");
n += Bprint(b, "%g %g %g", m->ambient.r, m->ambient.g, m->ambient.b);
if(m->ambient.a != 1)
n += Bprint(b, " %g", m->ambient.a);
n += Bprint(b, "\n");
}
if(m->diffuse.a > 0 || m->diffusemap != nil){
n += Bprint(b, "\tdiffuse: ");
n += Bprint(b, "%g %g %g", m->diffuse.r, m->diffuse.g, m->diffuse.b);
if(m->diffuse.a != 1)
n += Bprint(b, " %g", m->diffuse.a);
n += Bprint(b, "\n");
}
if(m->specular.a > 0 || m->specularmap != nil){
n += Bprint(b, "\tspecular: ");
n += Bprint(b, "%g %g %g", m->specular.r, m->specular.g, m->specular.b);
if(m->specular.a != 1)
n += Bprint(b, " %g", m->specular.a);
n += Bprint(b, "\n");
}
if(m->shininess > 0){
n += Bprint(b, "\tshininess: ");
n += Bprint(b, "%g\n", m->shininess);
}
if(m->diffusemap != nil && m->diffusemap->file != nil)
n += Bprint(b, "\tdiffusemap: %s\n", m->diffusemap->file);
if(m->specularmap != nil && m->specularmap->file != nil)
n += Bprint(b, "\tspecularmap: %s\n", m->specularmap->file);
if(m->normalmap != nil && m->normalmap->file != nil)
n += Bprint(b, "\tnormals: %s\n", m->normalmap->file);
n += Bprint(b, "}\n");
return n;
}
usize
writemodel(int fd, Model *m)
{
IArray *pa, *na, *ta, *ca, *Ta, *va, *prima;
Wirevert v;
Wireprim prim;
Primitive *p, *ep;
Biobuf *out;
usize n;
int i;
out = Bfdopen(fd, OWRITE);
if(out == nil)
sysfatal("Bfdopen: %r");
pa = mkitemarray(sizeof(Point3));
na = mkitemarray(sizeof(Point3));
ta = mkitemarray(sizeof(Point2));
ca = mkitemarray(sizeof(Color));
Ta = mkitemarray(sizeof(Point3));
va = mkitemarray(sizeof(Wirevert));
prima = mkitemarray(sizeof(Wireprim));
n = 0;
p = m->prims;
ep = p + m->nprims;
while(p < ep){
memset(&prim, 0, sizeof prim);
prim.nv = p->type+1;
for(i = 0; i < prim.nv; i++){
v.p = itemarrayadd(pa, &p->v[i].p, 1);
v.n = eqpt3(p->v[i].n, Vec3(0,0,0))?
NaI: itemarrayadd(na, &p->v[i].n, 1);
v.t = p->v[i].uv.w != 1?
NaI: itemarrayadd(ta, &p->v[i].uv, 1);
v.c = p->v[i].c.a == 0?
NaI: itemarrayadd(ca, &p->v[i].c, 1);
prim.v[i] = itemarrayadd(va, &v, 1);
}
prim.T = eqpt3(p->tangent, Vec3(0,0,0))?
NaI: itemarrayadd(Ta, &p->tangent, 1);
prim.mtlname = p->mtl != nil? p->mtl->name: nil;
itemarrayadd(prima, &prim, 1);
p++;
}
for(i = 0; i < m->nmaterials; i++)
n += Bprintmtl(out, &m->materials[i]);
for(i = 0; i < pa->nitems; i++)
n += Bprintp(out, itemarrayget(pa, i));
for(i = 0; i < na->nitems; i++)
n += Bprintn(out, itemarrayget(na, i));
for(i = 0; i < ta->nitems; i++)
n += Bprintt(out, itemarrayget(ta, i));
for(i = 0; i < ca->nitems; i++)
n += Bprintc(out, itemarrayget(ca, i));
for(i = 0; i < Ta->nitems; i++)
n += BprintT(out, itemarrayget(Ta, i));
for(i = 0; i < va->nitems; i++)
n += Bprintv(out, itemarrayget(va, i));
for(i = 0; i < prima->nitems; i++)
n += Bprintprim(out, itemarrayget(prima, i));
rmitemarray(pa);
rmitemarray(na);
rmitemarray(ta);
rmitemarray(ca);
rmitemarray(Ta);
rmitemarray(va);
rmitemarray(prima);
Bterm(out);
return n;
}
static int
exporttexture(char *path, Texture *t)
{
int fd;
fd = create(path, OWRITE|OEXCL, 0644);
if(fd < 0){
werrstr("create: %r");
return -1;
}
if(writememimage(fd, t->image) < 0){
close(fd);
werrstr("could not write '%s'", path);
return -1;
}
close(fd);
return 0;
}
int
exportmodel(char *path, Model *m)
{
static char Esmallbuf[] = "buf too small to hold path";
Material *mtl;
char buf[256], *pe, *me;
int fd, idx;
idx = 0;
if((pe = seprint(buf, buf + sizeof buf, "%s", path)) == nil)
sysfatal(Esmallbuf);
for(mtl = m->materials; mtl < m->materials+m->nmaterials; mtl++, idx++){
if(mtl->name == nil){
fprint(2, "warning: material #%d has no name. skipping...\n", idx);
continue;
}
if((me = seprint(pe, buf + sizeof buf, "/%s", mtl->name)) == nil)
sysfatal(Esmallbuf);
if(mtl->diffusemap != nil){
if(seprint(me, buf + sizeof buf, "_diffuse.pic") == nil)
sysfatal(Esmallbuf);
if(exporttexture(buf, mtl->diffusemap) < 0)
fprint(2, "warning: %r\n");
// if(mtl->diffusemap->file == nil)
mtl->diffusemap->file = estrdup(strrchr(buf, '/')+1);
}
if(mtl->specularmap != nil){
if(seprint(me, buf + sizeof buf, "_specular.pic") == nil)
sysfatal(Esmallbuf);
if(exporttexture(buf, mtl->specularmap) < 0)
fprint(2, "warning: %r\n");
// if(mtl->specularmap->file == nil)
mtl->specularmap->file = estrdup(strrchr(buf, '/')+1);
}
if(mtl->normalmap != nil){
if(seprint(me, buf + sizeof buf, "_normals.pic") == nil)
sysfatal(Esmallbuf);
if(exporttexture(buf, mtl->normalmap) < 0)
fprint(2, "warning: %r\n");
// if(mtl->normalmap->file == nil)
mtl->normalmap->file = estrdup(strrchr(buf, '/')+1);
}
}
if(seprint(pe, buf + sizeof buf, "/main.mdl") == nil)
sysfatal(Esmallbuf);
fd = create(buf, OWRITE|OEXCL, 0644);
if(fd < 0){
werrstr("create: %r");
return -1;
}
if(writemodel(fd, m) == 0){
close(fd);
werrstr("writemodel: %r");
return -1;
}
close(fd);
for(mtl = m->materials; mtl < m->materials+m->nmaterials; mtl++){
if(mtl->name == nil)
continue;
if(mtl->diffusemap != nil){
free(mtl->diffusemap->file);
mtl->diffusemap->file = nil;
}
if(mtl->specularmap != nil){
free(mtl->specularmap->file);
mtl->specularmap->file = nil;
}
if(mtl->normalmap != nil){
free(mtl->normalmap->file);
mtl->normalmap->file = nil;
}
}
return 0;
}