370 lines
11 KiB
C
370 lines
11 KiB
C
/* -----------------------------------------------------------------------------
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PicoModel Library
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Copyright (c) 2002, Randy Reddig & seaw0lf
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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Neither the names of the copyright holders nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------------- */
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/* dependencies */
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#include "picointernal.h"
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#include "bytebool.h"
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extern const picoModule_t picoModuleIQM;
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#define IQM_MAGIC "INTERQUAKEMODEL" //15+null
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/*
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========================================================================
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.IQM triangle model file format
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========================================================================
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*/
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enum
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{
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IQM_POSITION = 0,
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IQM_TEXCOORD = 1,
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IQM_NORMAL = 2,
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IQM_TANGENT = 3,
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IQM_BLENDINDEXES = 4,
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IQM_BLENDWEIGHTS = 5,
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IQM_COLOR = 6,
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IQM_CUSTOM = 0x10
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};
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enum
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{
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IQM_BYTE = 0,
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IQM_UBYTE = 1,
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IQM_SHORT = 2,
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IQM_USHORT = 3,
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IQM_INT = 4,
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IQM_UINT = 5,
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IQM_HALF = 6,
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IQM_FLOAT = 7,
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IQM_DOUBLE = 8
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};
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// animflags
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#define IQM_LOOP 1
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typedef struct iqmHeader_s {
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byte id[16];
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unsigned int version;
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unsigned int filesize;
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unsigned int flags;
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unsigned int num_text, ofs_text;
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unsigned int num_meshes, ofs_meshes;
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unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays;
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unsigned int num_triangles, ofs_triangles, ofs_neighbors;
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unsigned int num_joints, ofs_joints;
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unsigned int num_poses, ofs_poses;
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unsigned int num_anims, ofs_anims;
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unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds;
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unsigned int num_comment, ofs_comment;
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unsigned int num_extensions, ofs_extensions;
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} iqmHeader_t;
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typedef struct iqmmesh_s {
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unsigned int name;
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unsigned int material;
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unsigned int first_vertex;
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unsigned int num_vertexes;
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unsigned int first_triangle;
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unsigned int num_triangles;
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} iqmmesh_t;
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typedef struct iqmvertexarray_s {
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unsigned int type;
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unsigned int flags;
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unsigned int format;
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unsigned int size;
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unsigned int offset;
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} iqmvertexarray_t;
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//is anyone actually going to run this on a big-endian cpu?
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static iqmHeader_t SwapHeader(const iqmHeader_t *h)
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{
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iqmHeader_t r = *h;
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r.version = _pico_little_long(h->version);
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r.filesize = _pico_little_long(h->filesize);
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r.flags = _pico_little_long(h->flags);
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r.num_text = _pico_little_long(h->num_text);
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r.ofs_text = _pico_little_long(h->ofs_text);
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r.num_meshes = _pico_little_long(h->num_meshes);
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r.ofs_meshes = _pico_little_long(h->ofs_meshes);
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r.num_vertexarrays = _pico_little_long(h->num_vertexarrays);
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r.num_vertexes = _pico_little_long(h->num_vertexes);
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r.ofs_vertexarrays = _pico_little_long(h->ofs_vertexarrays);
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r.num_triangles = _pico_little_long(h->num_triangles);
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r.ofs_triangles = _pico_little_long(h->ofs_triangles);
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r.ofs_neighbors = _pico_little_long(h->ofs_neighbors);
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r.num_joints = _pico_little_long(h->num_joints);
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r.ofs_joints = _pico_little_long(h->ofs_joints);
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r.num_poses = _pico_little_long(h->num_poses);
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r.ofs_poses = _pico_little_long(h->ofs_poses);
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r.num_anims = _pico_little_long(h->num_anims);
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r.ofs_anims = _pico_little_long(h->ofs_anims);
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r.num_frames = _pico_little_long(h->num_frames);
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r.num_framechannels = _pico_little_long(h->num_framechannels);
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r.ofs_frames = _pico_little_long(h->ofs_frames);
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r.ofs_bounds = _pico_little_long(h->ofs_bounds);
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r.num_comment = _pico_little_long(h->num_comment);
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r.ofs_comment = _pico_little_long(h->ofs_comment);
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r.num_extensions = _pico_little_long(h->num_extensions);
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r.ofs_extensions = _pico_little_long(h->ofs_extensions);
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return r;
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}
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// _iqm_canload()
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static int _iqm_canload( PM_PARAMS_CANLOAD ){
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iqmHeader_t h;
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//make sure there's enough data for the header...
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if ((size_t)bufSize < sizeof(h))
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return PICO_PMV_ERROR_SIZE;
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h = SwapHeader(buffer);
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//make sure its actually an iqm
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if (memcmp(h.id, IQM_MAGIC, sizeof(h.id)))
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return PICO_PMV_ERROR_IDENT;
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//v1 is flawed, we don't know about anything higher either.
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if (h.version != 2)
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return PICO_PMV_ERROR_VERSION;
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//make sure its not truncated
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if ((size_t)h.filesize != (size_t)bufSize)
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return PICO_PMV_ERROR_SIZE;
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//looks like we can probably use it.
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return PICO_PMV_OK;
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}
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// _iqm_load() loads an interquake model file.
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static picoModel_t *_iqm_load( PM_PARAMS_LOAD ){
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picoModel_t *picoModel;
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picoSurface_t *picoSurface;
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picoShader_t *picoShader;
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const float *inf;
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const byte *inb;
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picoVec3_t xyz, normal;
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picoVec2_t st;
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picoColor_t color;
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iqmHeader_t h;
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iqmmesh_t m;
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iqmvertexarray_t a;
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size_t s, t, j, i;
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const char *stringtable;
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char skinname[512];
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const unsigned int *tri;
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//just in case
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if (_iqm_canload(fileName, buffer, bufSize) != PICO_PMV_OK)
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{
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_pico_printf( PICO_ERROR, "%s is not an IQM File!", fileName );
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return NULL;
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}
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h = SwapHeader(buffer);
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stringtable = (const char*)buffer + h.ofs_text;
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// do frame check
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if ( h.num_anims != 0 ) {
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_pico_printf( PICO_WARNING, "%s has animations! Using base pose only.", fileName );
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}
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/* create new pico model */
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picoModel = PicoNewModel();
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if ( picoModel == NULL ) {
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_pico_printf( PICO_ERROR, "Unable to allocate a new model" );
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return NULL;
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}
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/* do model setup */
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PicoSetModelFrameNum( picoModel, frameNum );
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PicoSetModelNumFrames( picoModel, 1 ); /* sea */
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PicoSetModelName( picoModel, fileName );
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PicoSetModelFileName( picoModel, fileName );
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for (s = 0; s < h.num_meshes; s++)
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{
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m = ((const iqmmesh_t*)((const char*)buffer + h.ofs_meshes))[s];
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m.first_triangle = _pico_little_long(m.first_triangle);
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m.first_vertex = _pico_little_long(m.first_vertex);
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m.material = _pico_little_long(m.material);
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m.name = _pico_little_long(m.name);
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m.num_triangles = _pico_little_long(m.num_triangles);
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m.num_vertexes = _pico_little_long(m.num_vertexes);
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// allocate new pico surface
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picoSurface = PicoNewSurface( picoModel );
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if ( picoSurface == NULL ) {
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_pico_printf( PICO_ERROR, "Unable to allocate a new model surface" );
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PicoFreeModel( picoModel );
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return NULL;
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}
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// detox Skin name
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memcpy(skinname, stringtable+m.material, sizeof(skinname));
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_pico_setfext( skinname, "" );
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_pico_unixify( skinname );
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PicoSetSurfaceType( picoSurface, PICO_TRIANGLES );
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PicoSetSurfaceName( picoSurface, stringtable+m.name );
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picoShader = PicoNewShader( picoModel );
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if ( picoShader == NULL ) {
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_pico_printf( PICO_ERROR, "Unable to allocate a new model shader" );
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PicoFreeModel( picoModel );
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return NULL;
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}
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PicoSetShaderName( picoShader, skinname );
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// associate current surface with newly created shader
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PicoSetSurfaceShader( picoSurface, picoShader );
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// spew the surface's indexes
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tri = (const unsigned int *)((const char *)buffer+h.ofs_triangles) + m.first_triangle*3;
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for (t = 0; t < m.num_triangles*3; t++)
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PicoSetSurfaceIndex( picoSurface, t, _pico_little_long(*tri++) - m.first_vertex );
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for ( j = 0; j < h.num_vertexarrays; j++)
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{
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a = ((const iqmvertexarray_t*)((const char*)buffer + h.ofs_vertexarrays))[j];
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a.flags = _pico_little_long(a.flags);
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a.format = _pico_little_long(a.format);
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a.offset = _pico_little_long(a.offset);
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a.size = _pico_little_long(a.size);
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a.type = _pico_little_long(a.type);
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switch(a.type)
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{
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case IQM_POSITION:
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if (a.format == IQM_FLOAT && a.size >= 3)
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{
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inf = (const float*)((const char *)buffer + a.offset) + m.first_vertex*a.size;
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for ( i = 0; i < m.num_vertexes; i++, inf += a.size )
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{
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xyz[0] = _pico_little_float(inf[0]);
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xyz[1] = _pico_little_float(inf[1]);
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xyz[2] = _pico_little_float(inf[2]);
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PicoSetSurfaceXYZ( picoSurface, i, xyz );
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}
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}
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break;
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case IQM_TEXCOORD:
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if (a.format == IQM_FLOAT && a.size >= 2)
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{
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inf = (const float*)((const char *)buffer + a.offset) + m.first_vertex*a.size;
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for ( i = 0; i < m.num_vertexes; i++, inf += a.size )
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{
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st[0] = _pico_little_float(inf[0]);
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st[1] = _pico_little_float(inf[1]);
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PicoSetSurfaceST( picoSurface, 0, i, st );
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}
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}
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break;
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case IQM_NORMAL:
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if (a.format == IQM_FLOAT && a.size >= 3)
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{
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inf = (const float*)((const char *)buffer + a.offset) + m.first_vertex*a.size;
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for ( i = 0; i < m.num_vertexes; i++, inf += a.size )
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{
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normal[0] = _pico_little_float(inf[0]);
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normal[1] = _pico_little_float(inf[1]);
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normal[2] = _pico_little_float(inf[2]);
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PicoSetSurfaceNormal( picoSurface, i, normal );
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}
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}
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break;
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case IQM_COLOR:
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if (a.format == IQM_UBYTE && a.size >= 3)
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{
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inb = (const byte*)((const char *)buffer + a.offset) + m.first_vertex*a.size;
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for ( i = 0; i < m.num_vertexes; i++, inb += a.size )
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{
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color[0] = inb[0];
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color[1] = inb[1];
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color[2] = inb[2];
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color[3] = (a.size>=4)?inb[3]:255;
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PicoSetSurfaceColor( picoSurface, 0, i, color );
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}
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}
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else if (a.format == IQM_FLOAT && a.size >= 3)
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{
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inf = (const float*)((const char *)buffer + a.offset) + m.first_vertex*a.size;
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for ( i = 0; i < m.num_vertexes; i++, inf += a.size )
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{
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color[0] = inf[0]*255;
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color[1] = inf[1]*255;
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color[2] = inf[2]*255;
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color[3] = (a.size>=4)?inf[3]*255:255;
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PicoSetSurfaceColor( picoSurface, 0, i, color );
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}
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}
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break;
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case IQM_TANGENT:
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case IQM_BLENDINDEXES:
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case IQM_BLENDWEIGHTS:
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case IQM_CUSTOM:
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break; //these attributes are not relevant.
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}
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}
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}
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// oh look, we're done.
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return picoModel;
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}
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/* pico file format module definition */
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const picoModule_t picoModuleIQM =
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{
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"0.001", /* module version string */
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"Vera Visions Model", /* module display name */
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"Spoike", /* author's name */
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"2018 Spoike", /* module copyright */
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{
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"vvm", NULL, NULL, NULL /* default extensions to use */
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},
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_iqm_canload, /* validation routine */
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_iqm_load, /* load routine */
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NULL, /* save validation routine */
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NULL /* save routine */
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};
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