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ioq3/code/renderervk/R_LoadMDR.c
Trung Lê 15ff484715
Add vulkan renderer 
Copied from vkQuake3 which is in turn based on Quake III Kenny Edition
2025-03-14 00:31:15 +11:00

527 lines
15 KiB
C
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#include "tr_local.h"
#include "tr_model.h"
#include "ref_import.h"
#include "tr_shader.h"
#define LL(x) x=LittleLong(x)
/*
=============================================================
UNCOMPRESSING BONES
=============================================================
*/
#define MC_BITS_X (16)
#define MC_BITS_Y (16)
#define MC_BITS_Z (16)
#define MC_BITS_VECT (16)
#define MC_SCALE_X (1.0f/64)
#define MC_SCALE_Y (1.0f/64)
#define MC_SCALE_Z (1.0f/64)
#define MC_MASK_X ((1<<(MC_BITS_X))-1)
#define MC_MASK_Y ((1<<(MC_BITS_Y))-1)
#define MC_MASK_Z ((1<<(MC_BITS_Z))-1)
#define MC_MASK_VECT ((1<<(MC_BITS_VECT))-1)
#define MC_SCALE_VECT (1.0f/(float)((1<<(MC_BITS_VECT-1))-2))
#define MC_POS_X (0)
#define MC_SHIFT_X (0)
#define MC_POS_Y ((((MC_BITS_X))/8))
#define MC_SHIFT_Y ((((MC_BITS_X)%8)))
#define MC_POS_Z ((((MC_BITS_X+MC_BITS_Y))/8))
#define MC_SHIFT_Z ((((MC_BITS_X+MC_BITS_Y)%8)))
#define MC_POS_V11 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z))/8))
#define MC_SHIFT_V11 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z)%8)))
#define MC_POS_V12 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT))/8))
#define MC_SHIFT_V12 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT)%8)))
#define MC_POS_V13 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*2))/8))
#define MC_SHIFT_V13 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*2)%8)))
#define MC_POS_V21 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*3))/8))
#define MC_SHIFT_V21 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*3)%8)))
#define MC_POS_V22 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*4))/8))
#define MC_SHIFT_V22 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*4)%8)))
#define MC_POS_V23 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*5))/8))
#define MC_SHIFT_V23 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*5)%8)))
#define MC_POS_V31 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*6))/8))
#define MC_SHIFT_V31 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*6)%8)))
#define MC_POS_V32 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*7))/8))
#define MC_SHIFT_V32 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*7)%8)))
#define MC_POS_V33 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*8))/8))
#define MC_SHIFT_V33 ((((MC_BITS_X+MC_BITS_Y+MC_BITS_Z+MC_BITS_VECT*8)%8)))
void MC_UnCompress(float mat[3][4], const unsigned char* comp)
{
int val;
val=(int)((unsigned short *)(comp))[0];
val-=1<<(MC_BITS_X-1);
mat[0][3]=((float)(val))*MC_SCALE_X;
val=(int)((unsigned short *)(comp))[1];
val-=1<<(MC_BITS_Y-1);
mat[1][3]=((float)(val))*MC_SCALE_Y;
val=(int)((unsigned short *)(comp))[2];
val-=1<<(MC_BITS_Z-1);
mat[2][3]=((float)(val))*MC_SCALE_Z;
val=(int)((unsigned short *)(comp))[3];
val-=1<<(MC_BITS_VECT-1);
mat[0][0]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[4];
val-=1<<(MC_BITS_VECT-1);
mat[0][1]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[5];
val-=1<<(MC_BITS_VECT-1);
mat[0][2]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[6];
val-=1<<(MC_BITS_VECT-1);
mat[1][0]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[7];
val-=1<<(MC_BITS_VECT-1);
mat[1][1]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[8];
val-=1<<(MC_BITS_VECT-1);
mat[1][2]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[9];
val-=1<<(MC_BITS_VECT-1);
mat[2][0]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[10];
val-=1<<(MC_BITS_VECT-1);
mat[2][1]=((float)(val))*MC_SCALE_VECT;
val=(int)((unsigned short *)(comp))[11];
val-=1<<(MC_BITS_VECT-1);
mat[2][2]=((float)(val))*MC_SCALE_VECT;
}
qboolean R_LoadMDR( model_t *mod, void *buffer, int filesize, const char *mod_name )
{
int i, j, k, l;
mdrHeader_t *pinmodel, *mdr;
mdrFrame_t *frame;
mdrLOD_t *lod, *curlod;
mdrSurface_t *surf, *cursurf;
mdrTriangle_t *tri, *curtri;
mdrVertex_t *v, *curv;
mdrWeight_t *weight, *curweight;
mdrTag_t *tag, *curtag;
int size;
shader_t *sh;
pinmodel = (mdrHeader_t *)buffer;
pinmodel->version = LittleLong(pinmodel->version);
if (pinmodel->version != MDR_VERSION)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has wrong version (%i should be %i)\n", mod_name, pinmodel->version, MDR_VERSION);
return qfalse;
}
size = LittleLong(pinmodel->ofsEnd);
if(size > filesize)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: Header of %s is broken. Wrong filesize declared!\n", mod_name);
return qfalse;
}
mod->type = MOD_MDR;
LL(pinmodel->numFrames);
LL(pinmodel->numBones);
LL(pinmodel->ofsFrames);
// This is a model that uses some type of compressed Bones. We don't want to uncompress every bone for each rendered frame
// over and over again, we'll uncompress it in this function already, so we must adjust the size of the target mdr.
if(pinmodel->ofsFrames < 0)
{
// mdrFrame_t is larger than mdrCompFrame_t:
size += pinmodel->numFrames * sizeof(frame->name);
// now add enough space for the uncompressed bones.
size += pinmodel->numFrames * pinmodel->numBones * ((sizeof(mdrBone_t) - sizeof(mdrCompBone_t)));
}
// simple bounds check
if(pinmodel->numBones < 0 ||
sizeof(*mdr) + pinmodel->numFrames * (sizeof(*frame) + (pinmodel->numBones - 1) * sizeof(*frame->bones)) > size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
mod->dataSize += size;
mod->modelData = mdr = ri.Hunk_Alloc( size, h_low );
// Copy all the values over from the file and fix endian issues in the process, if necessary.
mdr->ident = LittleLong(pinmodel->ident);
mdr->version = pinmodel->version; // Don't need to swap byte order on this one, we already did above.
Q_strncpyz(mdr->name, pinmodel->name, sizeof(mdr->name));
mdr->numFrames = pinmodel->numFrames;
mdr->numBones = pinmodel->numBones;
mdr->numLODs = LittleLong(pinmodel->numLODs);
mdr->numTags = LittleLong(pinmodel->numTags);
// We don't care about the other offset values, we'll generate them ourselves while loading.
mod->numLods = mdr->numLODs;
if ( mdr->numFrames < 1 )
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has no frames\n", mod_name);
return qfalse;
}
/* The first frame will be put into the first free space after the header */
frame = (mdrFrame_t *)(mdr + 1);
mdr->ofsFrames = (int)((byte *) frame - (byte *) mdr);
if (pinmodel->ofsFrames < 0)
{
mdrCompFrame_t *cframe;
// compressed model...
cframe = (mdrCompFrame_t *)((byte *) pinmodel - pinmodel->ofsFrames);
for(i = 0; i < mdr->numFrames; i++)
{
for(j = 0; j < 3; j++)
{
frame->bounds[0][j] = LittleFloat(cframe->bounds[0][j]);
frame->bounds[1][j] = LittleFloat(cframe->bounds[1][j]);
frame->localOrigin[j] = LittleFloat(cframe->localOrigin[j]);
}
frame->radius = LittleFloat(cframe->radius);
frame->name[0] = '\0'; // No name supplied in the compressed version.
for(j = 0; j < mdr->numBones; j++)
{
#if defined( Q3_BIG_ENDIAN )
for(k = 0; k < (sizeof(cframe->bones[j].Comp) / 2); k++)
{
// Do swapping for the uncompressing functions. They seem to use shorts
// values only, so I assume this will work. Never tested it on other
// platforms, though.
((unsigned short *)(cframe->bones[j].Comp))[k] =
LittleShort( ((unsigned short *)(cframe->bones[j].Comp))[k] );
}
#endif
/* Now do the actual uncompressing */
MC_UnCompress(frame->bones[j].matrix, cframe->bones[j].Comp);
}
// Next Frame...
// cframe = (mdrCompFrame_t *) &cframe->bones[j];
// frame = (mdrFrame_t *) &frame->bones[j];
// this suppress GCC strict-aliasing warning
{
// Next Frame...
mdrCompBone_t *p = &(cframe->bones[j]);
cframe = (mdrCompFrame_t *) p;
}
{
mdrBone_t *p = &frame->bones[j];
frame = (mdrFrame_t *) p;
}
}
}
else
{
mdrFrame_t *curframe;
// uncompressed model...
//
curframe = (mdrFrame_t *)((byte *) pinmodel + pinmodel->ofsFrames);
// swap all the frames
for ( i = 0 ; i < mdr->numFrames ; i++)
{
for(j = 0; j < 3; j++)
{
frame->bounds[0][j] = LittleFloat(curframe->bounds[0][j]);
frame->bounds[1][j] = LittleFloat(curframe->bounds[1][j]);
frame->localOrigin[j] = LittleFloat(curframe->localOrigin[j]);
}
frame->radius = LittleFloat(curframe->radius);
Q_strncpyz(frame->name, curframe->name, sizeof(frame->name));
// suppress GCC strict-aliasing warning
#if defined( Q3_BIG_ENDIAN )
for (j = 0; j < (int) (mdr->numBones * sizeof(mdrBone_t) / 4); j++)
{
((float *)frame->bones)[j]=FloatSwap(&((float *)curframe->bones)[j]);
}
#else
for (j = 0; j < mdr->numBones; j++)
{
frame->bones[j] = curframe->bones[j];
}
#endif
//curframe = (mdrFrame_t *) &curframe->bones[mdr->numBones];
//frame = (mdrFrame_t *) &frame->bones[mdr->numBones];
// suppress GCC strict-aliasing warning
{
mdrBone_t* p = &curframe->bones[mdr->numBones];
curframe = (mdrFrame_t *) p;
}
{
mdrBone_t* p = &frame->bones[mdr->numBones];
frame = (mdrFrame_t *) p;
}
}
}
// frame should now point to the first free address after all frames.
lod = (mdrLOD_t *) frame;
mdr->ofsLODs = (int) ((byte *) lod - (byte *)mdr);
curlod = (mdrLOD_t *)((byte *) pinmodel + LittleLong(pinmodel->ofsLODs));
// swap all the LOD's
for ( l = 0 ; l < mdr->numLODs ; l++)
{
// simple bounds check
if((byte *) (lod + 1) > (byte *) mdr + size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
lod->numSurfaces = LittleLong(curlod->numSurfaces);
// swap all the surfaces
surf = (mdrSurface_t *) (lod + 1);
lod->ofsSurfaces = (int)((byte *) surf - (byte *) lod);
cursurf = (mdrSurface_t *) ((byte *)curlod + LittleLong(curlod->ofsSurfaces));
for ( i = 0 ; i < lod->numSurfaces ; i++)
{
// simple bounds check
if((byte *) (surf + 1) > (byte *) mdr + size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
// first do some copying stuff
surf->ident = SF_MDR;
Q_strncpyz(surf->name, cursurf->name, sizeof(surf->name));
Q_strncpyz(surf->shader, cursurf->shader, sizeof(surf->shader));
surf->ofsHeader = (byte *) mdr - (byte *) surf;
surf->numVerts = LittleLong(cursurf->numVerts);
surf->numTriangles = LittleLong(cursurf->numTriangles);
// numBoneReferences and BoneReferences generally seem to be unused
// now do the checks that may fail.
if ( surf->numVerts >= SHADER_MAX_VERTEXES )
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has more than %i verts on %s (%i).\n",
mod_name, SHADER_MAX_VERTEXES - 1, surf->name[0] ? surf->name : "a surface",
surf->numVerts );
return qfalse;
}
if ( surf->numTriangles*3 >= SHADER_MAX_INDEXES )
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has more than %i triangles on %s (%i).\n",
mod_name, ( SHADER_MAX_INDEXES / 3 ) - 1, surf->name[0] ? surf->name : "a surface",
surf->numTriangles );
return qfalse;
}
// lowercase the surface name so skin compares are faster
Q_strlwr( surf->name );
// register the shaders
sh = R_FindShader(surf->shader, LIGHTMAP_NONE, qtrue);
if ( sh->defaultShader ) {
surf->shaderIndex = 0;
} else {
surf->shaderIndex = sh->index;
}
// now copy the vertexes.
v = (mdrVertex_t *) (surf + 1);
surf->ofsVerts = (int)((byte *) v - (byte *) surf);
curv = (mdrVertex_t *) ((byte *)cursurf + LittleLong(cursurf->ofsVerts));
for(j = 0; j < surf->numVerts; j++)
{
LL(curv->numWeights);
// simple bounds check
if(curv->numWeights < 0 || (byte *) (v + 1) + (curv->numWeights - 1) * sizeof(*weight) > (byte *) mdr + size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
v->normal[0] = LittleFloat(curv->normal[0]);
v->normal[1] = LittleFloat(curv->normal[1]);
v->normal[2] = LittleFloat(curv->normal[2]);
v->texCoords[0] = LittleFloat(curv->texCoords[0]);
v->texCoords[1] = LittleFloat(curv->texCoords[1]);
v->numWeights = curv->numWeights;
weight = &v->weights[0];
curweight = &curv->weights[0];
// Now copy all the weights
for(k = 0; k < v->numWeights; k++)
{
weight->boneIndex = LittleLong(curweight->boneIndex);
weight->boneWeight = LittleFloat(curweight->boneWeight);
weight->offset[0] = LittleFloat(curweight->offset[0]);
weight->offset[1] = LittleFloat(curweight->offset[1]);
weight->offset[2] = LittleFloat(curweight->offset[2]);
weight++;
curweight++;
}
v = (mdrVertex_t *) weight;
curv = (mdrVertex_t *) curweight;
}
// we know the offset to the triangles now:
tri = (mdrTriangle_t *) v;
surf->ofsTriangles = (int)((byte *) tri - (byte *) surf);
curtri = (mdrTriangle_t *)((byte *) cursurf + LittleLong(cursurf->ofsTriangles));
// simple bounds check
if(surf->numTriangles < 0 || (byte *) (tri + surf->numTriangles) > (byte *) mdr + size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
for(j = 0; j < surf->numTriangles; j++)
{
tri->indexes[0] = LittleLong(curtri->indexes[0]);
tri->indexes[1] = LittleLong(curtri->indexes[1]);
tri->indexes[2] = LittleLong(curtri->indexes[2]);
tri++;
curtri++;
}
// tri now points to the end of the surface.
surf->ofsEnd = (byte *) tri - (byte *) surf;
surf = (mdrSurface_t *) tri;
// find the next surface.
cursurf = (mdrSurface_t *) ((byte *) cursurf + LittleLong(cursurf->ofsEnd));
}
// surf points to the next lod now.
lod->ofsEnd = (int)((byte *) surf - (byte *) lod);
lod = (mdrLOD_t *) surf;
// find the next LOD.
curlod = (mdrLOD_t *)((byte *) curlod + LittleLong(curlod->ofsEnd));
}
// lod points to the first tag now, so update the offset too.
tag = (mdrTag_t *) lod;
mdr->ofsTags = (int)((byte *) tag - (byte *) mdr);
curtag = (mdrTag_t *) ((byte *)pinmodel + LittleLong(pinmodel->ofsTags));
// simple bounds check
if(mdr->numTags < 0 || (byte *) (tag + mdr->numTags) > (byte *) mdr + size)
{
ri.Printf(PRINT_WARNING, "R_LoadMDR: %s has broken structure.\n", mod_name);
return qfalse;
}
for (i = 0 ; i < mdr->numTags ; i++)
{
tag->boneIndex = LittleLong(curtag->boneIndex);
Q_strncpyz(tag->name, curtag->name, sizeof(tag->name));
tag++;
curtag++;
}
// And finally we know the real offset to the end.
mdr->ofsEnd = (int)((byte *) tag - (byte *) mdr);
// phew! we're done.
return qtrue;
}
qhandle_t R_RegisterMDR(const char *name, model_t *mod)
{
char* buf;
qboolean loaded = qfalse;
int filesize = ri.FS_ReadFile(name, (void**)&buf);
if(!buf)
{
mod->type = MOD_BAD;
return 0;
}
#if defined( Q3_BIG_ENDIAN )
int ident = LittleLong(*(int *)buf);
#else
int ident = *(int *)buf;
#endif
if(ident == MDR_IDENT)
loaded = R_LoadMDR(mod, buf, filesize, name);
ri.FS_FreeFile(buf);
if(!loaded)
{
ri.Printf(PRINT_WARNING,"R_RegisterMDR: couldn't load mdr file %s\n", name);
mod->type = MOD_BAD;
return 0;
}
return mod->index;
}
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