static picoShader_t *_obj_default_shader (picoModel_t *model)
{
picoShader_t *picoShader = PicoNewShader(model);
char *skinname = _pico_clone_alloc(model->fileName);
_pico_setfext(skinname, "");
PicoSetShaderName(picoShader, skinname);
_pico_free(skinname);
return picoShader;
}
/* _3ds_load:
* loads an autodesk 3ds model file.
*/
static picoModel_t *_3ds_load( PM_PARAMS_LOAD )
{
T3dsLoaderPers pers;
picoModel_t *model;
char basename[128];
/* create a new pico model */
model = PicoNewModel();
if (model == NULL)
{
/* user must have some serious ram problems ;) */
return NULL;
}
/* get model's base name (eg. jeep from c:\models\jeep.3ds) */
memset( basename,0,sizeof(basename) );
strncpy( basename,_pico_nopath(fileName),sizeof(basename) );
_pico_setfext( basename,"" );
/* initialize persistant vars (formerly static) */
pers.model = model;
pers.bufptr = (picoByte_t *)buffer;
pers.basename = (char *)basename;
pers.maxofs = bufSize;
pers.cofs = 0L;
/* do model setup */
PicoSetModelFrameNum( model,frameNum );
PicoSetModelName( model,fileName );
PicoSetModelFileName( model,fileName );
/* skip first chunk in file (magic) */
GetChunk(&pers);
/* process chunks */
if (!DoNextChunk(&pers,pers.maxofs))
{
/* well, bleh i guess */
PicoFreeModel(model);
return NULL;
}
/* return allocated pico model */
return model;
}
// _fm_load() loads a Heretic 2 model file.
static picoModel_t *_fm_load( PM_PARAMS_LOAD )
{
int i, j, dups, dup_index;
int fm_file_pos;
index_LUT_t *p_index_LUT, *p_index_LUT2, *p_index_LUT3;
index_DUP_LUT_t *p_index_LUT_DUPS;
fm_vert_normal_t *vert;
char skinname[FM_SKINPATHSIZE];
fm_t fm;
fm_header_t *fm_head;
fm_st_t *texCoord;
fm_xyz_st_t *tri_verts;
fm_xyz_st_t *triangle;
fm_frame_t *frame;
picoByte_t *bb, *bb0;
picoModel_t *picoModel;
picoSurface_t *picoSurface;
picoShader_t *picoShader;
picoVec3_t xyz, normal;
picoVec2_t st;
picoColor_t color;
bb0 = bb = (picoByte_t*) _pico_alloc(bufSize);
memcpy(bb, buffer, bufSize);
// Header Header
fm.fm_header_hdr = (fm_chunk_header_t *) bb;
fm_file_pos = sizeof(fm_chunk_header_t) + fm.fm_header_hdr->size;
if( (strcmp(fm.fm_header_hdr->ident, FM_HEADERCHUNKNAME)) )
{
_pico_printf( PICO_WARNING, "FM Header Ident incorrect\n");
_pico_free(bb0);
return NULL;
}
if( _pico_little_long( fm.fm_header_hdr->version ) != FM_HEADERCHUNKVER )
{
_pico_printf( PICO_WARNING, "FM Header Version incorrect\n");
_pico_free(bb0);
return NULL;
}
// Skin Header
fm.fm_skin_hdr = (fm_chunk_header_t *) (bb + fm_file_pos);
fm_file_pos += sizeof(fm_chunk_header_t) + fm.fm_skin_hdr->size;
if( (strcmp(fm.fm_skin_hdr->ident, FM_SKINCHUNKNAME)) )
{
_pico_printf( PICO_WARNING, "FM Skin Ident incorrect\n");
_pico_free(bb0);
return NULL;
}
if( _pico_little_long( fm.fm_skin_hdr->version ) != FM_SKINCHUNKVER )
{
_pico_printf( PICO_WARNING, "FM Skin Version incorrect\n");
_pico_free(bb0);
return NULL;
}
// ST Header
fm.fm_st_hdr = (fm_chunk_header_t *) (bb + fm_file_pos);
fm_file_pos += sizeof(fm_chunk_header_t) + fm.fm_st_hdr->size;
if( (strcmp(fm.fm_st_hdr->ident, FM_STCOORDCHUNKNAME)) )
{
_pico_printf( PICO_WARNING, "FM ST Ident incorrect\n");
_pico_free(bb0);
return NULL;
}
if( _pico_little_long( fm.fm_st_hdr->version ) != FM_STCOORDCHUNKVER )
{
_pico_printf( PICO_WARNING, "FM ST Version incorrect\n");
_pico_free(bb0);
return NULL;
}
// Tris Header
fm.fm_tri_hdr = (fm_chunk_header_t *) (bb + fm_file_pos);
fm_file_pos += sizeof(fm_chunk_header_t) + fm.fm_tri_hdr->size;
if( (strcmp(fm.fm_tri_hdr->ident, FM_TRISCHUNKNAME)) )
{
_pico_printf( PICO_WARNING, "FM Tri Ident incorrect\n");
_pico_free(bb0);
return NULL;
}
if( _pico_little_long( fm.fm_tri_hdr->version ) != FM_TRISCHUNKVER )
{
_pico_printf( PICO_WARNING, "FM Tri Version incorrect\n");
_pico_free(bb0);
return NULL;
}
// Frame Header
fm.fm_frame_hdr = (fm_chunk_header_t *) (bb + fm_file_pos);
fm_file_pos += sizeof(fm_chunk_header_t);
if( (strcmp(fm.fm_frame_hdr->ident, FM_FRAMESCHUNKNAME)) )
{
_pico_printf( PICO_WARNING, "FM Frame Ident incorrect\n");
_pico_free(bb0);
return NULL;
}
if( _pico_little_long( fm.fm_frame_hdr->version ) != FM_FRAMESCHUNKVER )
{
_pico_printf( PICO_WARNING, "FM Frame Version incorrect\n");
_pico_free(bb0);
return NULL;
}
// Header
fm_file_pos = sizeof(fm_chunk_header_t);
fm_head = fm.fm_header = (fm_header_t *) (bb + fm_file_pos);
fm_file_pos += fm.fm_header_hdr->size;
// Skin
fm_file_pos += sizeof(fm_chunk_header_t);
fm.fm_skin = (fm_skinpath_t *) (bb + fm_file_pos);
fm_file_pos += fm.fm_skin_hdr->size;
// ST
fm_file_pos += sizeof(fm_chunk_header_t);
texCoord = fm.fm_st = (fm_st_t *) (bb + fm_file_pos);
fm_file_pos += fm.fm_st_hdr->size;
// Tri
fm_file_pos += sizeof(fm_chunk_header_t);
tri_verts = fm.fm_tri = (fm_xyz_st_t *) (bb + fm_file_pos);
fm_file_pos += fm.fm_tri_hdr->size;
// Frame
fm_file_pos += sizeof(fm_chunk_header_t);
frame = fm.fm_frame = (fm_frame_t *) (bb + fm_file_pos);
// do frame check
if( fm_head->numFrames < 1 )
{
_pico_printf( PICO_ERROR, "%s has 0 frames!", fileName );
_pico_free(bb0);
return NULL;
}
if( frameNum < 0 || frameNum >= fm_head->numFrames )
{
_pico_printf( PICO_ERROR, "Invalid or out-of-range FM frame specified" );
_pico_free(bb0);
return NULL;
}
// swap fm
fm_head->skinWidth = _pico_little_long( fm_head->skinWidth );
fm_head->skinHeight = _pico_little_long( fm_head->skinHeight );
fm_head->frameSize = _pico_little_long( fm_head->frameSize );
fm_head->numSkins = _pico_little_long( fm_head->numSkins );
fm_head->numXYZ = _pico_little_long( fm_head->numXYZ );
fm_head->numST = _pico_little_long( fm_head->numST );
fm_head->numTris = _pico_little_long( fm_head->numTris );
fm_head->numGLCmds = _pico_little_long( fm_head->numGLCmds );
fm_head->numFrames = _pico_little_long( fm_head->numFrames );
// swap frame scale and translation
for( i = 0; i < 3; i++ )
{
frame->header.scale[ i ] = _pico_little_float( frame->header.scale[ i ] );
frame->header.translate[ i ] = _pico_little_float( frame->header.translate[ i ] );
}
// swap triangles
triangle = tri_verts;
for( i = 0; i < fm_head->numTris; i++, triangle++ )
{
for( j = 0; j < 3; j++ )
{
triangle->index_xyz[ j ] = _pico_little_short( triangle->index_xyz[ j ] );
triangle->index_st[ j ] = _pico_little_short( triangle->index_st[ j ] );
}
}
// swap st coords
for( i = 0; i < fm_head->numST; i++ )
{
texCoord->s = _pico_little_short( texCoord[i].s );
texCoord->t = _pico_little_short( texCoord[i].t );
}
// set Skin Name
strncpy(skinname, (const char *) fm.fm_skin, FM_SKINPATHSIZE );
#ifdef FM_VERBOSE_DBG
// Print out md2 values
_pico_printf(PICO_VERBOSE,"numSkins->%d numXYZ->%d numST->%d numTris->%d numFrames->%d\nSkin Name \"%s\"\n", fm_head->numSkins, fm_head->numXYZ, fm_head->numST, fm_head->numTris, fm_head->numFrames, &skinname );
#endif
// detox Skin name
_pico_setfext( skinname, "" );
_pico_unixify( skinname );
/* create new pico model */
picoModel = PicoNewModel();
if( picoModel == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model" );
_pico_free(bb0);
return NULL;
}
/* do model setup */
PicoSetModelFrameNum( picoModel, frameNum );
PicoSetModelNumFrames( picoModel, fm_head->numFrames ); /* sea */
PicoSetModelName( picoModel, fileName );
PicoSetModelFileName( picoModel, fileName );
// allocate new pico surface
picoSurface = PicoNewSurface( picoModel );
if( picoSurface == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model surface" );
PicoFreeModel( picoModel );
_pico_free(bb0);
return NULL;
}
PicoSetSurfaceType( picoSurface, PICO_TRIANGLES );
PicoSetSurfaceName( picoSurface, frame->header.name );
picoShader = PicoNewShader( picoModel );
if( picoShader == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model shader" );
PicoFreeModel( picoModel );
_pico_free(bb0);
return NULL;
}
PicoSetShaderName( picoShader, skinname );
// associate current surface with newly created shader
PicoSetSurfaceShader( picoSurface, picoShader );
// Init LUT for Verts
p_index_LUT = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t) * fm_head->numXYZ);
for(i=0; i<fm_head->numXYZ; i++)
{
p_index_LUT[i].Vert = -1;
p_index_LUT[i].ST = -1;
p_index_LUT[i].next = NULL;
}
// Fill in Look Up Table, and allocate/fill Linked List from vert array as needed for dup STs per Vert.
dups = 0;
triangle = tri_verts;
for(i=0; i<fm_head->numTris; i++)
{
for(j=0; j<3; j++)
{
if (p_index_LUT[triangle->index_xyz[j]].ST == -1) // No Main Entry
p_index_LUT[triangle->index_xyz[j]].ST = triangle->index_st[j];
else if (triangle->index_st[j] == p_index_LUT[triangle->index_xyz[j]].ST ) // Equal to Main Entry
{
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, "-> Tri #%d, Vert %d:\t XYZ:%d ST:%d\n", i, j, triangle->index_xyz[j], triangle->index_st[j]);
#endif
continue;
}
else if ( (p_index_LUT[triangle->index_xyz[j]].next == NULL) ) // Not equal to Main entry, and no LL entry
{ // Add first entry of LL from Main
p_index_LUT2 = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t));
if (p_index_LUT2 == NULL)
_pico_printf( PICO_NORMAL, " Couldn't allocate memory!\n");
p_index_LUT[triangle->index_xyz[j]].next = (index_LUT_t *)p_index_LUT2;
p_index_LUT2->Vert = dups;
p_index_LUT2->ST = triangle->index_st[j];
p_index_LUT2->next = NULL;
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, " ADDING first LL XYZ:%d DUP:%d ST:%d\n", triangle->index_xyz[j], dups, triangle->index_st[j]);
#endif
triangle->index_xyz[j] = dups + fm_head->numXYZ; // Make change in Tri hunk
dups++;
}
else // Try to find in LL from Main Entry
{
p_index_LUT3 = p_index_LUT2 = p_index_LUT[triangle->index_xyz[j]].next;
while ( (p_index_LUT2 != NULL) && (triangle->index_xyz[j] != p_index_LUT2->Vert) ) // Walk down LL
{
p_index_LUT3 = p_index_LUT2;
p_index_LUT2 = p_index_LUT2->next;
}
p_index_LUT2 = p_index_LUT3;
if ( triangle->index_st[j] == p_index_LUT2->ST ) // Found it
{
triangle->index_xyz[j] = p_index_LUT2->Vert + fm_head->numXYZ; // Make change in Tri hunk
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, "--> Tri #%d, Vert %d:\t XYZ:%d ST:%d\n", i, j, triangle->index_xyz[j], triangle->index_st[j]);
#endif
continue;
}
if ( p_index_LUT2->next == NULL) // Didn't find it. Add entry to LL.
{
// Add the Entry
p_index_LUT3 = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t));
if (p_index_LUT3 == NULL)
_pico_printf( PICO_NORMAL, " Couldn't allocate memory!\n");
p_index_LUT2->next = (index_LUT_t *)p_index_LUT3;
p_index_LUT3->Vert = dups;
p_index_LUT3->ST = triangle->index_st[j];
p_index_LUT3->next = NULL;
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, " ADDING additional LL XYZ:%d DUP:%d NewXYZ:%d ST:%d\n", triangle->index_xyz[j], dups, dups + (fm_head->numXYZ), triangle->index_st[j]);
#endif
triangle->index_xyz[j] = dups + fm_head->numXYZ; // Make change in Tri hunk
dups++;
}
}
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, "---> Tri #%d, Vert %d:\t XYZ:%d ST:%d\n", i, j, triangle->index_xyz[j], triangle->index_st[j]);
#endif
}
triangle++;
}
// malloc and build array for Dup STs
p_index_LUT_DUPS = (index_DUP_LUT_t *)_pico_alloc(sizeof(index_DUP_LUT_t) * dups);
if (p_index_LUT_DUPS == NULL)
_pico_printf( PICO_NORMAL, " Couldn't allocate memory!\n");
dup_index = 0;
for(i=0; i<fm_head->numXYZ; i++)
{
p_index_LUT2 = p_index_LUT[i].next;
while (p_index_LUT2 != NULL)
{
p_index_LUT_DUPS[p_index_LUT2->Vert].OldVert = i;
p_index_LUT_DUPS[p_index_LUT2->Vert].ST = p_index_LUT2->ST;
dup_index++;
p_index_LUT2 = p_index_LUT2->next;
}
}
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, " Dups = %d\n", dups);
_pico_printf( PICO_NORMAL, " Dup Index = %d\n", dup_index);
#endif
for(i=0; i<fm_head->numXYZ; i++)
{
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, "Vert: %4d\t%4d",i, p_index_LUT[i].ST);
#endif
if (p_index_LUT[i].next != NULL)
{
p_index_LUT2 = p_index_LUT[i].next;
do {
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, " %4d %4d", p_index_LUT2->Vert, p_index_LUT2->ST);
#endif
p_index_LUT2 = p_index_LUT2->next;
} while ( p_index_LUT2 != NULL);
}
#ifdef FM_VERBOSE_DBG
_pico_printf( PICO_NORMAL, "\n");
#endif
}
#ifdef FM_VERBOSE_DBG
for(i=0; i<dup_index; i++)
_pico_printf( PICO_NORMAL, " Dup Index #%d OldVert: %d ST: %d\n", i, p_index_LUT_DUPS[i].OldVert, p_index_LUT_DUPS[i].ST);
triangle = tri_verts;
for(i=0; i<fm_head->numTris; i++)
{
for(j=0; j<3; j++)
_pico_printf( PICO_NORMAL, "Tri #%d, Vert %d:\t XYZ:%d ST:%d\n", i, j, triangle->index_xyz[j], triangle->index_st[j]);
_pico_printf( PICO_NORMAL, "\n");
triangle++;
}
#endif
// Build Picomodel
triangle = tri_verts;
for( j = 0; j < fm_head->numTris; j++, triangle++ )
{
PicoSetSurfaceIndex( picoSurface, j*3 , triangle->index_xyz[0] );
PicoSetSurfaceIndex( picoSurface, j*3+1 , triangle->index_xyz[1] );
PicoSetSurfaceIndex( picoSurface, j*3+2 , triangle->index_xyz[2] );
}
vert = (fm_vert_normal_t*) ((picoByte_t*) (frame->verts) );
for(i=0; i< fm_head->numXYZ; i++, vert++)
{
/* set vertex origin */
xyz[ 0 ] = vert->v[0] * frame->header.scale[0] + frame->header.translate[0];
xyz[ 1 ] = vert->v[1] * frame->header.scale[1] + frame->header.translate[1];
xyz[ 2 ] = vert->v[2] * frame->header.scale[2] + frame->header.translate[2];
PicoSetSurfaceXYZ( picoSurface, i , xyz );
/* set normal */
normal[ 0 ] = fm_normals[vert->lightnormalindex][0];
normal[ 1 ] = fm_normals[vert->lightnormalindex][1];
normal[ 2 ] = fm_normals[vert->lightnormalindex][2];
PicoSetSurfaceNormal( picoSurface, i , normal );
/* set st coords */
st[ 0 ] = ((texCoord[p_index_LUT[i].ST].s) / ((float)fm_head->skinWidth));
st[ 1 ] = (texCoord[p_index_LUT[i].ST].t / ((float)fm_head->skinHeight));
PicoSetSurfaceST( picoSurface, 0, i , st );
}
if (dups)
{
for(i=0; i<dups; i++)
{
j = p_index_LUT_DUPS[i].OldVert;
/* set vertex origin */
xyz[ 0 ] = frame->verts[j].v[0] * frame->header.scale[0] + frame->header.translate[0];
xyz[ 1 ] = frame->verts[j].v[1] * frame->header.scale[1] + frame->header.translate[1];
xyz[ 2 ] = frame->verts[j].v[2] * frame->header.scale[2] + frame->header.translate[2];
PicoSetSurfaceXYZ( picoSurface, i + fm_head->numXYZ , xyz );
/* set normal */
normal[ 0 ] = fm_normals[frame->verts[j].lightnormalindex][0];
normal[ 1 ] = fm_normals[frame->verts[j].lightnormalindex][1];
normal[ 2 ] = fm_normals[frame->verts[j].lightnormalindex][2];
PicoSetSurfaceNormal( picoSurface, i + fm_head->numXYZ , normal );
/* set st coords */
st[ 0 ] = ((texCoord[p_index_LUT_DUPS[i].ST].s) / ((float)fm_head->skinWidth));
st[ 1 ] = (texCoord[p_index_LUT_DUPS[i].ST].t / ((float)fm_head->skinHeight));
PicoSetSurfaceST( picoSurface, 0, i + fm_head->numXYZ , st );
}
}
/* set color */
PicoSetSurfaceColor( picoSurface, 0, 0, color );
// Free up malloc'ed LL entries
for(i=0; i<fm_head->numXYZ; i++)
{
if(p_index_LUT[i].next != NULL)
{
p_index_LUT2 = p_index_LUT[i].next;
do {
p_index_LUT3 = p_index_LUT2->next;
_pico_free(p_index_LUT2);
p_index_LUT2 = p_index_LUT3;
dups--;
} while (p_index_LUT2 != NULL);
}
}
if (dups)
_pico_printf(PICO_WARNING, " Not all LL mallocs freed\n");
// Free malloc'ed LUTs
_pico_free(p_index_LUT);
_pico_free(p_index_LUT_DUPS);
/* return the new pico model */
_pico_free(bb0);
return picoModel;
}
static picoModel_t *_md2_load( PM_PARAMS_LOAD )
{
int i, j, dups, dup_index;
index_LUT_t *p_index_LUT, *p_index_LUT2, *p_index_LUT3;
index_DUP_LUT_t *p_index_LUT_DUPS;
md2Triangle_t *p_md2Triangle;
char skinname[ MD2_MAX_SKINNAME ];
md2_t *md2;
md2St_t *texCoord;
md2Frame_t *frame;
md2Triangle_t *triangle;
md2XyzNormal_t *vertex;
picoByte_t *bb, *bb0;
picoModel_t *picoModel;
picoSurface_t *picoSurface;
picoShader_t *picoShader;
picoVec3_t xyz, normal;
picoVec2_t st;
picoColor_t color;
/* set as md2 */
bb0 = bb = (picoByte_t*) _pico_alloc(bufSize);
memcpy(bb, buffer, bufSize);
md2 = (md2_t*) bb;
/* check ident and version */
if( *((const int*) md2->magic) != *((const int*) MD2_MAGIC) || _pico_little_long( md2->version ) != MD2_VERSION )
{
/* not an md2 file (todo: set error) */
_pico_printf( PICO_ERROR, "%s is not an MD2 File!", fileName );
_pico_free(bb0);
return NULL;
}
// swap md2
md2->version = _pico_little_long( md2->version );
md2->skinWidth = _pico_little_long( md2->skinWidth );
md2->skinHeight = _pico_little_long( md2->skinHeight );
md2->frameSize = _pico_little_long( md2->frameSize );
md2->numSkins = _pico_little_long( md2->numSkins );
md2->numXYZ = _pico_little_long( md2->numXYZ );
md2->numST = _pico_little_long( md2->numST );
md2->numTris = _pico_little_long( md2->numTris );
md2->numGLCmds = _pico_little_long( md2->numGLCmds );
md2->numFrames = _pico_little_long( md2->numFrames );
md2->ofsSkins = _pico_little_long( md2->ofsSkins );
md2->ofsST = _pico_little_long( md2->ofsST );
md2->ofsTris = _pico_little_long( md2->ofsTris );
md2->ofsFrames = _pico_little_long( md2->ofsFrames );
md2->ofsGLCmds = _pico_little_long( md2->ofsGLCmds );
md2->ofsEnd = _pico_little_long( md2->ofsEnd );
// do frame check
if( md2->numFrames < 1 )
{
_pico_printf( PICO_ERROR, "%s has 0 frames!", fileName );
_pico_free(bb0);
return NULL;
}
if( frameNum < 0 || frameNum >= md2->numFrames )
{
_pico_printf( PICO_ERROR, "Invalid or out-of-range MD2 frame specified" );
_pico_free(bb0);
return NULL;
}
// Setup Frame
frame = (md2Frame_t *) (bb + md2->ofsFrames + (sizeof(md2Frame_t) * frameNum));
// swap frame scale and translation
for( i = 0; i < 3; i++ )
{
frame->scale[ i ] = _pico_little_float( frame->scale[ i ] );
frame->translate[ i ] = _pico_little_float( frame->translate[ i ] );
}
// swap triangles
triangle = (md2Triangle_t *) ((picoByte_t *) (bb + md2->ofsTris) );
for( i = 0; i < md2->numTris; i++, triangle++ )
{
for( j = 0; j < 3; j++ )
{
triangle->index_xyz[ j ] = _pico_little_short( triangle->index_xyz[ j ] );
triangle->index_st[ j ] = _pico_little_short( triangle->index_st[ j ] );
}
}
// swap st coords
texCoord = (md2St_t*) ((picoByte_t *) (bb + md2->ofsST) );
for( i = 0; i < md2->numST; i++, texCoord++ )
{
texCoord->s = _pico_little_short( texCoord->s );
texCoord->t = _pico_little_short( texCoord->t );
}
// set Skin Name
strncpy(skinname, (const char *) (bb + md2->ofsSkins), MD2_MAX_SKINNAME );
// Print out md2 values
_pico_printf(PICO_VERBOSE,"Skins: %d Verts: %d STs: %d Triangles: %d Frames: %d\nSkin Name \"%s\"\n", md2->numSkins, md2->numXYZ, md2->numST, md2->numTris, md2->numFrames, &skinname );
// detox Skin name
_pico_setfext( skinname, "" );
_pico_unixify( skinname );
/* create new pico model */
picoModel = PicoNewModel();
if( picoModel == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model" );
_pico_free(bb0);
return NULL;
}
/* do model setup */
PicoSetModelFrameNum( picoModel, frameNum );
PicoSetModelNumFrames( picoModel, md2->numFrames ); /* sea */
PicoSetModelName( picoModel, fileName );
PicoSetModelFileName( picoModel, fileName );
// allocate new pico surface
picoSurface = PicoNewSurface( picoModel );
if( picoSurface == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model surface" );
PicoFreeModel( picoModel );
_pico_free(bb0);
return NULL;
}
PicoSetSurfaceType( picoSurface, PICO_TRIANGLES );
PicoSetSurfaceName( picoSurface, frame->name );
picoShader = PicoNewShader( picoModel );
if( picoShader == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model shader" );
PicoFreeModel( picoModel );
_pico_free(bb0);
return NULL;
}
PicoSetShaderName( picoShader, skinname );
// associate current surface with newly created shader
PicoSetSurfaceShader( picoSurface, picoShader );
// Init LUT for Verts
p_index_LUT = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t) * md2->numXYZ);
for(i=0; i<md2->numXYZ; i++)
{
p_index_LUT[i].Vert = -1;
p_index_LUT[i].ST = -1;
p_index_LUT[i].next = NULL;
}
// Fill in Look Up Table, and allocate/fill Linked List from vert array as needed for dup STs per Vert.
dups = 0;
for(i=0; i<md2->numTris; i++)
{
p_md2Triangle = (md2Triangle_t *) ( bb + md2->ofsTris + (sizeof(md2Triangle_t)*i));
for(j=0; j<3; j++)
{
if (p_index_LUT[p_md2Triangle->index_xyz[j]].ST == -1) // No Main Entry
p_index_LUT[p_md2Triangle->index_xyz[j]].ST = p_md2Triangle->index_st[j];
else if (p_md2Triangle->index_st[j] == p_index_LUT[p_md2Triangle->index_xyz[j]].ST ) // Equal to Main Entry
continue;
else if ( (p_index_LUT[p_md2Triangle->index_xyz[j]].next == NULL) ) // Not equal to Main entry, and no LL entry
{ // Add first entry of LL from Main
p_index_LUT2 = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t));
if (p_index_LUT2 == NULL)
_pico_printf( PICO_ERROR," Couldn't allocate memory!\n");
p_index_LUT[p_md2Triangle->index_xyz[j]].next = (index_LUT_t *)p_index_LUT2;
p_index_LUT2->Vert = dups;
p_index_LUT2->ST = p_md2Triangle->index_st[j];
p_index_LUT2->next = NULL;
p_md2Triangle->index_xyz[j] = dups + md2->numXYZ; // Make change in Tri hunk
dups++;
}
else // Try to find in LL from Main Entry
{
p_index_LUT3 = p_index_LUT2 = p_index_LUT[p_md2Triangle->index_xyz[j]].next;
while ( (p_index_LUT2 != NULL) && (p_md2Triangle->index_xyz[j] != p_index_LUT2->Vert) ) // Walk down LL
{
p_index_LUT3 = p_index_LUT2;
p_index_LUT2 = p_index_LUT2->next;
}
p_index_LUT2 = p_index_LUT3;
if ( p_md2Triangle->index_st[j] == p_index_LUT2->ST ) // Found it
{
p_md2Triangle->index_xyz[j] = p_index_LUT2->Vert + md2->numXYZ; // Make change in Tri hunk
continue;
}
if ( p_index_LUT2->next == NULL) // Didn't find it. Add entry to LL.
{
// Add the Entry
p_index_LUT3 = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t));
if (p_index_LUT3 == NULL)
_pico_printf( PICO_ERROR," Couldn't allocate memory!\n");
p_index_LUT2->next = (index_LUT_t *)p_index_LUT3;
p_index_LUT3->Vert = p_md2Triangle->index_xyz[j];
p_index_LUT3->ST = p_md2Triangle->index_st[j];
p_index_LUT3->next = NULL;
p_md2Triangle->index_xyz[j] = dups + md2->numXYZ; // Make change in Tri hunk
dups++;
}
}
}
}
// malloc and build array for Dup STs
p_index_LUT_DUPS = (index_DUP_LUT_t *)_pico_alloc(sizeof(index_DUP_LUT_t) * dups);
if (p_index_LUT_DUPS == NULL)
_pico_printf( PICO_ERROR," Couldn't allocate memory!\n");
dup_index = 0;
for(i=0; i<md2->numXYZ; i++)
{
p_index_LUT2 = p_index_LUT[i].next;
while (p_index_LUT2 != NULL)
{
p_index_LUT_DUPS[p_index_LUT2->Vert].OldVert = i;
p_index_LUT_DUPS[p_index_LUT2->Vert].ST = p_index_LUT2->ST;
dup_index++;
p_index_LUT2 = p_index_LUT2->next;
}
}
// Build Picomodel
triangle = (md2Triangle_t *) ((picoByte_t *) (bb + md2->ofsTris) );
texCoord = (md2St_t*) ((picoByte_t *) (bb + md2->ofsST) );
vertex = (md2XyzNormal_t*) ((picoByte_t*) (frame->verts) );
for( j = 0; j < md2->numTris; j++, triangle++ )
{
PicoSetSurfaceIndex( picoSurface, j*3 , triangle->index_xyz[0] );
PicoSetSurfaceIndex( picoSurface, j*3+1 , triangle->index_xyz[1] );
PicoSetSurfaceIndex( picoSurface, j*3+2 , triangle->index_xyz[2] );
}
for(i=0; i< md2->numXYZ; i++, vertex++)
{
/* set vertex origin */
xyz[ 0 ] = vertex->v[0] * frame->scale[0] + frame->translate[0];
xyz[ 1 ] = vertex->v[1] * frame->scale[1] + frame->translate[1];
xyz[ 2 ] = vertex->v[2] * frame->scale[2] + frame->translate[2];
PicoSetSurfaceXYZ( picoSurface, i , xyz );
/* set normal */
normal[ 0 ] = md2_normals[vertex->lightnormalindex][0];
normal[ 1 ] = md2_normals[vertex->lightnormalindex][1];
normal[ 2 ] = md2_normals[vertex->lightnormalindex][2];
PicoSetSurfaceNormal( picoSurface, i , normal );
/* set st coords */
st[ 0 ] = ((texCoord[p_index_LUT[i].ST].s) / ((float)md2->skinWidth));
st[ 1 ] = (texCoord[p_index_LUT[i].ST].t / ((float)md2->skinHeight));
PicoSetSurfaceST( picoSurface, 0, i , st );
}
if (dups)
{
for(i=0; i<dups; i++)
{
j = p_index_LUT_DUPS[i].OldVert;
/* set vertex origin */
xyz[ 0 ] = frame->verts[j].v[0] * frame->scale[0] + frame->translate[0];
xyz[ 1 ] = frame->verts[j].v[1] * frame->scale[1] + frame->translate[1];
xyz[ 2 ] = frame->verts[j].v[2] * frame->scale[2] + frame->translate[2];
PicoSetSurfaceXYZ( picoSurface, i + md2->numXYZ , xyz );
/* set normal */
normal[ 0 ] = md2_normals[frame->verts[j].lightnormalindex][0];
normal[ 1 ] = md2_normals[frame->verts[j].lightnormalindex][1];
normal[ 2 ] = md2_normals[frame->verts[j].lightnormalindex][2];
PicoSetSurfaceNormal( picoSurface, i + md2->numXYZ , normal );
/* set st coords */
st[ 0 ] = ((texCoord[p_index_LUT_DUPS[i].ST].s) / ((float)md2->skinWidth));
st[ 1 ] = (texCoord[p_index_LUT_DUPS[i].ST].t / ((float)md2->skinHeight));
PicoSetSurfaceST( picoSurface, 0, i + md2->numXYZ , st );
}
}
/* set color */
PicoSetSurfaceColor( picoSurface, 0, 0, color );
// Free up malloc'ed LL entries
for(i=0; i<md2->numXYZ; i++)
{
if(p_index_LUT[i].next != NULL)
{
p_index_LUT2 = p_index_LUT[i].next;
do {
p_index_LUT3 = p_index_LUT2->next;
_pico_free(p_index_LUT2);
p_index_LUT2 = p_index_LUT3;
dups--;
} while (p_index_LUT2 != NULL);
}
}
if (dups)
_pico_printf(PICO_WARNING, " Not all LL mallocs freed\n");
// Free malloc'ed LUTs
_pico_free(p_index_LUT);
_pico_free(p_index_LUT_DUPS);
/* return the new pico model */
_pico_free(bb0);
return picoModel;
}
static picoModel_t *_terrain_load( PM_PARAMS_LOAD ){
int i, j, v, pw[ 5 ], r;
picoParser_t *p;
char *shader, *heightmapFile, *colormapFile;
picoVec3_t scale, origin;
unsigned char *imageBuffer;
int imageBufSize, w, h, cw, ch;
unsigned char *heightmap, *colormap, *heightPixel, *colorPixel;
picoModel_t *picoModel;
picoSurface_t *picoSurface;
picoShader_t *picoShader;
picoVec3_t xyz, normal;
picoVec2_t st;
picoColor_t color;
/* create pico parser */
p = _pico_new_parser( (const picoByte_t*) buffer, bufSize );
if ( p == NULL ) {
return NULL;
}
/* get first token */
if ( _pico_parse_first( p ) == NULL ) {
return NULL;
}
/* check first token */
if ( _pico_stricmp( p->token, "picoterrain" ) ) {
_pico_printf( PICO_ERROR, "Invalid PicoTerrain model" );
_pico_free_parser( p );
return NULL;
}
/* setup */
shader = heightmapFile = colormapFile = NULL;
_pico_set_vec( scale, 512, 512, 32 );
/* parse ase model file */
while ( 1 )
{
/* get first token on line */
if ( !_pico_parse_first( p ) ) {
break;
}
/* skip empty lines */
if ( !p->token || !p->token[ 0 ] ) {
continue;
}
/* shader */
if ( !_pico_stricmp( p->token, "shader" ) ) {
if ( _pico_parse( p, 0 ) && p->token[ 0 ] ) {
if ( shader != NULL ) {
_pico_free( shader );
}
shader = _pico_clone_alloc( p->token );
}
}
/* heightmap */
else if ( !_pico_stricmp( p->token, "heightmap" ) ) {
if ( _pico_parse( p, 0 ) && p->token[ 0 ] ) {
if ( heightmapFile != NULL ) {
_pico_free( heightmapFile );
}
heightmapFile = _pico_clone_alloc( p->token );
}
}
/* colormap */
else if ( !_pico_stricmp( p->token, "colormap" ) ) {
if ( _pico_parse( p, 0 ) && p->token[ 0 ] ) {
if ( colormapFile != NULL ) {
_pico_free( colormapFile );
}
colormapFile = _pico_clone_alloc( p->token );
}
}
/* scale */
else if ( !_pico_stricmp( p->token, "scale" ) ) {
_pico_parse_vec( p, scale );
}
/* skip unparsed rest of line and continue */
_pico_parse_skip_rest( p );
}
/* ----------------------------------------------------------------- */
/* load heightmap */
heightmap = imageBuffer = NULL;
_pico_load_file( heightmapFile, &imageBuffer, &imageBufSize );
_terrain_load_tga_buffer( imageBuffer, &heightmap, &w, &h );
_pico_free( heightmapFile );
_pico_free_file( imageBuffer );
if ( heightmap == NULL || w < 2 || h < 2 ) {
_pico_printf( PICO_ERROR, "PicoTerrain model with invalid heightmap" );
if ( shader != NULL ) {
_pico_free( shader );
}
if ( colormapFile != NULL ) {
_pico_free( colormapFile );
}
_pico_free_parser( p );
return NULL;
}
/* set origin (bottom lowest corner of terrain mesh) */
_pico_set_vec( origin, ( w / -2 ) * scale[ 0 ], ( h / -2 ) * scale[ 1 ], -128 * scale[ 2 ] );
/* load colormap */
colormap = imageBuffer = NULL;
_pico_load_file( colormapFile, &imageBuffer, &imageBufSize );
_terrain_load_tga_buffer( imageBuffer, &colormap, &cw, &ch );
_pico_free( colormapFile );
_pico_free_file( imageBuffer );
if ( cw != w || ch != h ) {
_pico_printf( PICO_WARNING, "PicoTerrain colormap/heightmap size mismatch" );
_pico_free( colormap );
colormap = NULL;
}
/* ----------------------------------------------------------------- */
/* create new pico model */
picoModel = PicoNewModel();
if ( picoModel == NULL ) {
_pico_printf( PICO_ERROR, "Unable to allocate a new model" );
return NULL;
}
/* do model setup */
PicoSetModelFrameNum( picoModel, frameNum );
PicoSetModelNumFrames( picoModel, 1 ); /* sea */
PicoSetModelName( picoModel, fileName );
PicoSetModelFileName( picoModel, fileName );
/* allocate new pico surface */
picoSurface = PicoNewSurface( picoModel );
if ( picoSurface == NULL ) {
_pico_printf( PICO_ERROR, "Unable to allocate a new model surface" );
PicoFreeModel( picoModel ); /* sea */
return NULL;
}
/* terrain surfaces are triangle meshes */
PicoSetSurfaceType( picoSurface, PICO_TRIANGLES );
/* set surface name */
PicoSetSurfaceName( picoSurface, "picoterrain" );
/* create new pico shader */
picoShader = PicoNewShader( picoModel );
if ( picoShader == NULL ) {
_pico_printf( PICO_ERROR, "Unable to allocate a new model shader" );
PicoFreeModel( picoModel );
_pico_free( shader );
return NULL;
}
/* detox and set shader name */
_pico_setfext( shader, "" );
_pico_unixify( shader );
PicoSetShaderName( picoShader, shader );
_pico_free( shader );
/* associate current surface with newly created shader */
PicoSetSurfaceShader( picoSurface, picoShader );
/* make bogus normal */
_pico_set_vec( normal, 0.0f, 0.0f, 0.0f );
/* create mesh */
for ( j = 0; j < h; j++ )
{
for ( i = 0; i < w; i++ )
{
/* get pointers */
v = i + ( j * w );
heightPixel = heightmap + v * 4;
colorPixel = colormap
? colormap + v * 4
: NULL;
/* set xyz */
_pico_set_vec( xyz, origin[ 0 ] + scale[ 0 ] * i,
origin[ 1 ] + scale[ 1 ] * j,
origin[ 2 ] + scale[ 2 ] * heightPixel[ 0 ] );
PicoSetSurfaceXYZ( picoSurface, v, xyz );
/* set normal */
PicoSetSurfaceNormal( picoSurface, v, normal );
/* set st */
st[ 0 ] = (float) i;
st[ 1 ] = (float) j;
PicoSetSurfaceST( picoSurface, 0, v, st );
/* set color */
if ( colorPixel != NULL ) {
_pico_set_color( color, colorPixel[ 0 ], colorPixel[ 1 ], colorPixel[ 2 ], colorPixel[ 3 ] );
}
else{
_pico_set_color( color, 255, 255, 255, 255 );
}
PicoSetSurfaceColor( picoSurface, 0, v, color );
/* set triangles (zero alpha in heightmap suppresses this quad) */
if ( i < ( w - 1 ) && j < ( h - 1 ) && heightPixel[ 3 ] >= 128 ) {
/* set indexes */
pw[ 0 ] = i + ( j * w );
pw[ 1 ] = i + ( ( j + 1 ) * w );
pw[ 2 ] = i + 1 + ( ( j + 1 ) * w );
pw[ 3 ] = i + 1 + ( j * w );
pw[ 4 ] = i + ( j * w ); /* same as pw[ 0 ] */
/* set radix */
r = ( i + j ) & 1;
/* make first triangle */
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 0 ), (picoIndex_t) pw[ r + 0 ] );
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 1 ), (picoIndex_t) pw[ r + 1 ] );
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 2 ), (picoIndex_t) pw[ r + 2 ] );
/* make second triangle */
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 3 ), (picoIndex_t) pw[ r + 0 ] );
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 4 ), (picoIndex_t) pw[ r + 2 ] );
PicoSetSurfaceIndex( picoSurface, ( v * 6 + 5 ), (picoIndex_t) pw[ r + 3 ] );
}
}
}
/* free stuff */
_pico_free_parser( p );
_pico_free( heightmap );
_pico_free( colormap );
/* return the new pico model */
return picoModel;
}
static picoModel_t *_md2_load( PM_PARAMS_LOAD )
{
int i, j;
short tot_numVerts;
index_LUT_t *p_index_LUT;
md2Triangle_t *p_md2Triangle;
char skinname[ MD2_MAX_SKINNAME ];
md2_t *md2;
md2St_t *texCoord;
md2Frame_t *frame;
md2Triangle_t *triangle;
md2XyzNormal_t *vertex;
picoByte_t *bb;
picoModel_t *picoModel;
picoSurface_t *picoSurface;
picoShader_t *picoShader;
picoVec3_t xyz, normal;
picoVec2_t st;
picoColor_t color;
/* set as md2 */
bb = (picoByte_t*) buffer;
md2 = (md2_t*) buffer;
/* check ident and version */
if( *((int*) md2->magic) != *((int*) MD2_MAGIC) || _pico_little_long( md2->version ) != MD2_VERSION )
{
/* not an md2 file (todo: set error) */
_pico_printf( PICO_ERROR, "%s is not an MD2 File!", fileName );
return NULL;
}
// swap md2
md2->version = _pico_little_long( md2->version );
md2->skinWidth = _pico_little_long( md2->skinWidth );
md2->skinHeight = _pico_little_long( md2->skinHeight );
md2->frameSize = _pico_little_long( md2->frameSize );
md2->numSkins = _pico_little_long( md2->numSkins );
md2->numXYZ = _pico_little_long( md2->numXYZ );
md2->numST = _pico_little_long( md2->numST );
md2->numTris = _pico_little_long( md2->numTris );
md2->numGLCmds = _pico_little_long( md2->numGLCmds );
md2->numFrames = _pico_little_long( md2->numFrames );
md2->ofsSkins = _pico_little_long( md2->ofsSkins );
md2->ofsST = _pico_little_long( md2->ofsST );
md2->ofsTris = _pico_little_long( md2->ofsTris );
md2->ofsFrames = _pico_little_long( md2->ofsFrames );
md2->ofsGLCmds = _pico_little_long( md2->ofsGLCmds );
md2->ofsEnd = _pico_little_long( md2->ofsEnd );
// do frame check
if( md2->numFrames < 1 )
{
_pico_printf( PICO_ERROR, "%s has 0 frames!", fileName );
return NULL;
}
if( frameNum < 0 || frameNum >= md2->numFrames )
{
_pico_printf( PICO_ERROR, "Invalid or out-of-range MD2 frame specified" );
return NULL;
}
// Setup Frame
frame = (md2Frame_t *) (bb + md2->ofsFrames + (sizeof(md2Frame_t) * frameNum));
// swap frame scale and translation
for( i = 0; i < 3; i++ )
{
frame->scale[ i ] = _pico_little_float( frame->scale[ i ] );
frame->translate[ i ] = _pico_little_float( frame->translate[ i ] );
}
// swap triangles
triangle = (md2Triangle_t *) ((picoByte_t *) (bb + md2->ofsTris) );
for( i = 0; i < md2->numTris; i++, triangle++ )
{
for( j = 0; j < 3; j++ )
{
triangle->index_xyz[ j ] = _pico_little_short( triangle->index_xyz[ j ] );
triangle->index_st[ j ] = _pico_little_short( triangle->index_st[ j ] );
}
}
// swap st coords
texCoord = (md2St_t*) ((picoByte_t *) (bb + md2->ofsST) );
for( i = 0; i < md2->numST; i++, texCoord++ )
{
texCoord->s = _pico_little_short( texCoord->s );
texCoord->t = _pico_little_short( texCoord->t );
}
// Print out md2 values
_pico_printf(PICO_VERBOSE,"Skins: %d Verts: %d STs: %d Triangles: %d Frames: %d\nSkin Name \"%s\"\n", md2->numSkins, md2->numXYZ, md2->numST, md2->numTris, md2->numFrames, &skinname );
/* create new pico model */
picoModel = PicoNewModel();
if( picoModel == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model" );
return NULL;
}
/* do model setup */
PicoSetModelFrameNum( picoModel, frameNum );
PicoSetModelNumFrames( picoModel, md2->numFrames ); /* sea */
PicoSetModelName( picoModel, fileName );
PicoSetModelFileName( picoModel, fileName );
for (i = 0; i < md2->numSkins; i++) {
char *offsetSkin = (char*) (bb + md2->ofsSkins) + i * MD2_MAX_SKINNAME;
/* set Skin Name */
strncpy(skinname, offsetSkin, MD2_MAX_SKINNAME);
/* detox Skin name */
if (skinname[0] == '.') {/* special case ufoai skinpath */
char path[MD2_MAX_SKINNAME];
char skinnameRelative[MD2_MAX_SKINNAME];
strncpy(path, fileName, MD2_MAX_SKINNAME);
strncpy(skinnameRelative, skinname, MD2_MAX_SKINNAME);
_pico_unixify(path);
for (j = MD2_MAX_SKINNAME; j--;) {/* skip filename */
if (path[j] == '/')
break;
path[j] = '\0';
}
snprintf(skinname, MD2_MAX_SKINNAME, "%s%s", path, &skinnameRelative[1]);
}
_pico_setfext(skinname, "");
picoShader = PicoNewShader(picoModel);
if (picoShader == NULL) {
_pico_printf(PICO_ERROR, "Unable to allocate a new model shader");
PicoFreeModel(picoModel);
return NULL;
}
PicoSetShaderName(picoShader, skinname);
}
// allocate new pico surface
picoSurface = PicoNewSurface( picoModel );
if( picoSurface == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model surface" );
PicoFreeModel( picoModel );
return NULL;
}
PicoSetSurfaceType( picoSurface, PICO_TRIANGLES );
PicoSetSurfaceName( picoSurface, frame->name );
picoShader = PicoNewShader( picoModel );
if( picoShader == NULL )
{
_pico_printf( PICO_ERROR, "Unable to allocate a new model shader" );
PicoFreeModel( picoModel );
return NULL;
}
PicoSetShaderName( picoShader, skinname );
// associate current surface with newly created shader
PicoSetSurfaceShader( picoSurface, picoShader );
// Init LUT for Verts
p_index_LUT = (index_LUT_t *)_pico_alloc(sizeof(index_LUT_t) * md2->numXYZ);
for(i=0; i<md2->numXYZ; i++)
{
p_index_LUT[i].Vert = -1;
p_index_LUT[i].ST = -1;
}
/* Fill in Look Up Table, and allocate/fill Linked List from vert array as needed for dup STs per Vert. */
tot_numVerts = md2->numXYZ;
for (i = 0; i < md2->numTris; i++) {
p_md2Triangle = (md2Triangle_t *) (bb + md2->ofsTris + (sizeof(md2Triangle_t) * i));
for (j = 0; j < 3; j++) {
if (p_index_LUT[p_md2Triangle->index_xyz[j]].ST == -1) /* No Main Entry */
p_index_LUT[p_md2Triangle->index_xyz[j]].ST = p_md2Triangle->index_st[j];
}
}
/* Build Picomodel */
triangle = (md2Triangle_t *) ((picoByte_t *) (bb + md2->ofsTris));
for (j = 0; j < md2->numTris; j++, triangle++) {
PicoSetSurfaceIndex(picoSurface, j * 3, triangle->index_xyz[0]);
PicoSetSurfaceIndex(picoSurface, j * 3 + 1, triangle->index_xyz[1]);
PicoSetSurfaceIndex(picoSurface, j * 3 + 2, triangle->index_xyz[2]);
}
_pico_set_color(color, 255, 255, 255, 255);
texCoord = (md2St_t*) ((picoByte_t *) (bb + md2->ofsST));
vertex = (md2XyzNormal_t*) ((picoByte_t*) (frame->verts));
for (i = 0; i < md2->numXYZ; i++, vertex++) {
/* set vertex origin */
xyz[0] = vertex->v[0] * frame->scale[0] + frame->translate[0];
xyz[1] = vertex->v[1] * frame->scale[1] + frame->translate[1];
xyz[2] = vertex->v[2] * frame->scale[2] + frame->translate[2];
PicoSetSurfaceXYZ(picoSurface, i, xyz);
/* set normal */
normal[0] = md2_normals[vertex->lightnormalindex][0];
normal[1] = md2_normals[vertex->lightnormalindex][1];
normal[2] = md2_normals[vertex->lightnormalindex][2];
PicoSetSurfaceNormal(picoSurface, i, normal);
/* set st coords */
st[0] = (float) texCoord[p_index_LUT[i].ST].s / (float) md2->skinWidth;
st[1] = (float) texCoord[p_index_LUT[i].ST].t / (float) md2->skinHeight;
PicoSetSurfaceST(picoSurface, 0, i, st);
/* set color */
PicoSetSurfaceColor(picoSurface, 0, i, color);
}
/* Free malloc'ed LUTs */
_pico_free(p_index_LUT);
/* return the new pico model */
return picoModel;
}
static int _obj_mtl_load (picoModel_t *model)
{
picoParser_t *p;
picoByte_t *mtlBuffer;
int mtlBufSize;
char *fileName;
/* sanity checks */
if (model == NULL || model->fileName == NULL)
return 0;
/* skip if we have a zero length model file name */
if (!strlen(model->fileName))
return 0;
/* helper */
#define _obj_mtl_error_return \
{ \
_pico_free_parser( p ); \
_pico_free_file( mtlBuffer ); \
_pico_free( fileName ); \
return 0; \
}
/* alloc copy of model file name */
fileName = _pico_clone_alloc(model->fileName);
if (fileName == NULL)
return 0;
/* change extension of model file to .mtl */
_pico_setfext(fileName, "mtl");
/* load .mtl file contents */
_pico_load_file(fileName, &mtlBuffer, &mtlBufSize);
/* check result */
if (mtlBufSize == 0)
return 1; /* file is empty: no error */
if (mtlBufSize < 0)
return 0; /* load failed: error */
/* create a new pico parser */
p = _pico_new_parser(mtlBuffer, mtlBufSize);
if (p == NULL)
_obj_mtl_error_return;
/* doo teh .mtl parse */
while (1) {
/* get next token in material file */
if (_pico_parse(p, 1) == NULL)
break;
#if 0
/* skip empty lines */
if (p->token == NULL || !strlen(p->token))
continue;
/* skip comment lines */
if (p->token[0] == '#') {
_pico_parse_skip_rest(p);
continue;
}
/* new material */
if (!_pico_stricmp(p->token, "newmtl")) {
picoShader_t *shader;
char *name;
/* get material name */
name = _pico_parse(p, 0);
/* validate material name */
if (name == NULL || !strlen(name)) {
_pico_printf(PICO_ERROR, "Missing material name in MTL, line %d.", p->curLine);
_obj_mtl_error_return;
}
/* create a new pico shader */
shader = PicoNewShader(model);
if (shader == NULL)
_obj_mtl_error_return;
/* set shader name */
PicoSetShaderName(shader, name);
/* assign pointer to current shader */
curShader = shader;
}
/* diffuse map name */
else if (!_pico_stricmp(p->token, "map_kd")) {
char *mapName;
/* pointer to current shader must be valid */
if (curShader == NULL)
_obj_mtl_error_return;
/* get material's diffuse map name */
mapName = _pico_parse(p, 0);
/* validate map name */
if (mapName == NULL || !strlen(mapName)) {
_pico_printf(PICO_ERROR, "Missing material map name in MTL, line %d.", p->curLine);
_obj_mtl_error_return;
}
/* set shader map name */
PicoSetShaderMapName(shader, mapName);
}
/* dissolve factor (pseudo transparency 0..1) */
/* where 0 means 100% transparent and 1 means opaque */
else if (!_pico_stricmp(p->token, "d")) {
picoByte_t *diffuse;
float value;
/* get dissolve factor */
if (!_pico_parse_float(p, &value))
_obj_mtl_error_return;
/* set shader transparency */
PicoSetShaderTransparency(curShader, value);
/* get shader's diffuse color */
diffuse = PicoGetShaderDiffuseColor(curShader);
/* set diffuse alpha to transparency */
diffuse[3] = (picoByte_t) (value * 255.0);
/* set shader's new diffuse color */
PicoSetShaderDiffuseColor(curShader, diffuse);
}
/* shininess (phong specular component) */
else if (!_pico_stricmp(p->token, "ns")) {
/* remark:
* - well, this is some major obj spec fuckup once again. some
* apps store this in 0..1 range, others use 0..100 range,
* even others use 0..2048 range, and again others use the
* range 0..128, some even use 0..1000, 0..200, 400..700,
* honestly, what's up with the 3d app coders? happens when
* you smoke too much weed i guess. -sea
*/
float value;
/* pointer to current shader must be valid */
if (curShader == NULL)
_obj_mtl_error_return;
/* get totally screwed up shininess (a random value in fact ;) */
if (!_pico_parse_float(p, &value))
_obj_mtl_error_return;
/* okay, there is no way to set this correctly, so we simply */
/* try to guess a few ranges (most common ones i have seen) */
/* assume 0..2048 range */
if (value > 1000)
value = 128.0 * (value / 2048.0);
/* assume 0..1000 range */
else if (value > 200)
value = 128.0 * (value / 1000.0);
/* assume 0..200 range */
else if (value > 100)
value = 128.0 * (value / 200.0);
/* assume 0..100 range */
else if (value > 1)
value = 128.0 * (value / 100.0);
/* assume 0..1 range */
else {
value *= 128.0;
}
/* negative shininess is bad (yes, i have seen it...) */
if (value < 0.0)
value = 0.0;
/* set the pico shininess value in range 0..127 */
/* geez, .obj is such a mess... */
PicoSetShaderShininess(curShader, value);
}
/* kol0r ambient (wut teh fuk does "ka" stand for?) */
else if (!_pico_stricmp(p->token, "ka")) {
picoColor_t color;
picoVec3_t v;
/* pointer to current shader must be valid */
if (curShader == NULL)
_obj_mtl_error_return;
/* get color vector */
if (!_pico_parse_vec(p, v))
_obj_mtl_error_return;
/* scale to byte range */
color[0] = (picoByte_t) (v[0] * 255);
color[1] = (picoByte_t) (v[1] * 255);
color[2] = (picoByte_t) (v[2] * 255);
color[3] = (picoByte_t) (255);
/* set ambient color */
PicoSetShaderAmbientColor(curShader, color);
}
/* kol0r diffuse */
else if (!_pico_stricmp(p->token, "kd")) {
picoColor_t color;
picoVec3_t v;
/* pointer to current shader must be valid */
if (curShader == NULL)
_obj_mtl_error_return;
/* get color vector */
if (!_pico_parse_vec(p, v))
_obj_mtl_error_return;
/* scale to byte range */
color[0] = (picoByte_t) (v[0] * 255);
color[1] = (picoByte_t) (v[1] * 255);
color[2] = (picoByte_t) (v[2] * 255);
color[3] = (picoByte_t) (255);
/* set diffuse color */
PicoSetShaderDiffuseColor(curShader, color);
}
/* kol0r specular */
else if (!_pico_stricmp(p->token, "ks")) {
picoColor_t color;
picoVec3_t v;
/* pointer to current shader must be valid */
if (curShader == NULL)
_obj_mtl_error_return;
/* get color vector */
if (!_pico_parse_vec(p, v))
_obj_mtl_error_return;
/* scale to byte range */
color[0] = (picoByte_t) (v[0] * 255);
color[1] = (picoByte_t) (v[1] * 255);
color[2] = (picoByte_t) (v[2] * 255);
color[3] = (picoByte_t) (255);
/* set specular color */
PicoSetShaderSpecularColor(curShader, color);
}
#endif
/* skip rest of line */
_pico_parse_skip_rest(p);
}
/* free parser, file buffer, and file name */
_pico_free_parser(p);
_pico_free_file(mtlBuffer);
_pico_free(fileName);
/* return with success */
return 1;
}