I suppose that this is probably of most interest to Dave
but there may be others of you that are potentially coding
yourselves into the same boat.
I managed to get the SG and SSG libraries compiled on
HPUX 10.20 on a C180 class workstation. The HP is *very*
particular about having certain things start on word
boundaries. I had to make the following changes to
ssgLoad3ds.cxx to get it to run without coring and to
correctly load a model. These particular changes were
made to the version of this file distributed in plib 1.1.11 -
I don't know if additional changes are necessary for the most
recent version.
Most of the changes relate to how get() is used. Instead
of passing a pointer that might not be on a word boundary
to get(), data is copied from the input buffer into a local
temporary variable of the correct type and the address of
that variable is passed to get(). Rather than list every
change, I'll give an example and a list of functions
effected.
Original:
static int parse_uscale( char **p, unsigned long length )
{
texture_scale[ num_materials - 1 ][0] = get((float*)*p);
return PARSE_OK;
}
Becomes:
static int parse_uscale( char **p, unsigned long length )
{
float lTmpFloat;
memcpy((void *) &lTmpFloat, (void *) *p, sizeof(float));
texture_scale[ num_materials - 1 ][0] = get(&lTmpFloat);
return PARSE_OK;
}
Other functions effected:
parse_vscale(): 1 instance (line 261)
parse_uoffst(): 1 instance (line 267)
parse_voffst(): 1 instance (line 273)
parse_rgb1(): 3 instances (line 305, 306, 307)
parse_shininess(): 1 instance (line 348)
parse_transparency(): 1 instance (line 356)
parse_vert_list(): 4 instances (line 422, 428, 429, 430)
parse_smooth_list(): 1 instance (line 445)
parse_face_list(): 7 instances (line 504, 515 - 518, 541, 542)
parse_map_list(): 3 instances (line 565, 571, 572)
parse_face_materials(): 2 instances (line 628, 653)
parse_chunks(): 2 instances (line 732, 733)
There are several casts that must be modified.
(line 423, 440, 503, 566, 627)
I also had to fix a small problem with one of the get()
functions.
Original:
static float get(float *f) {
if (is_little_endian)
return *f;
else {
unsigned long p = (unsigned long)*f;
endian_swap(&p);
return p;
}
}
Fixed:
static float get(float *f) {
if (is_little_endian)
return *f;
else {
float lTmpFloat = *f;
endian_swap((unsigned long *) &lTmpFloat);
return lTmpFloat;
}
}
After all that, I've also attached the file with my mods and
an output of diff.
Let me know if you need anything else.
Troy. |
