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Add support for IQM int blend indices and float blend weights

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Integer blend indices are converted to bytes at load, ioq3 doesn't allow more than 128 joints.

Heavily based on code by @zippers.
This commit is contained in:
Zack Middleton 2013-10-29 22:09:06 -05:00
parent 1515841b38
commit 0bf1f3d0ba
4 changed files with 150 additions and 46 deletions
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10
code/renderergl1/tr_local.h
View file

@ -618,10 +618,18 @@ typedef struct {
float *normals;
float *tangents;
byte *blendIndexes;
byte *blendWeights;
union {
float *f;
byte *b;
} blendWeights;
byte *colors;
int *triangles;
// depending upon the exporter, blend indices and weights might be int/float
// as opposed to the recommended byte/byte, for example Noesis exports
// int/float whereas the official IQM tool exports byte/byte
byte blendWeightsType; // IQM_BYTE or IQM_FLOAT
int *jointParents;
float *jointMats;
float *poseMats;

80
code/renderergl1/tr_model_iqm.c
View file

@ -150,6 +150,7 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData_t *iqmData;
srfIQModel_t *surface;
char meshName[MAX_QPATH];
byte blendIndexesType, blendWeightsType;
if( filesize < sizeof(iqmHeader_t) ) {
return qfalse;
@ -271,11 +272,20 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
}
break;
case IQM_BLENDINDEXES:
case IQM_BLENDWEIGHTS:
if( vertexarray->format != IQM_UBYTE ||
if( (vertexarray->format != IQM_INT &&
vertexarray->format != IQM_UBYTE) ||
vertexarray->size != 4 ) {
return qfalse;
}
blendIndexesType = vertexarray->format;
break;
case IQM_BLENDWEIGHTS:
if( (vertexarray->format != IQM_FLOAT &&
vertexarray->format != IQM_UBYTE) ||
vertexarray->size != 4 ) {
return qfalse;
}
blendWeightsType = vertexarray->format;
break;
case IQM_COLOR:
if( vertexarray->format != IQM_UBYTE ||
@ -458,12 +468,18 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
size += header->num_vertexes * 3 * sizeof(float); // normals
size += header->num_vertexes * 4 * sizeof(float); // tangents
size += header->num_vertexes * 4 * sizeof(byte); // blendIndexes
size += header->num_vertexes * 4 * sizeof(byte); // blendWeights
size += header->num_vertexes * 4 * sizeof(byte); // colors
size += header->num_joints * sizeof(int); // parents
size += header->num_triangles * 3 * sizeof(int); // triangles
size += joint_names; // joint names
// blendWeights
if (blendWeightsType == IQM_FLOAT) {
size += header->num_vertexes * 4 * sizeof(float);
} else {
size += header->num_vertexes * 4 * sizeof(byte);
}
mod->type = MOD_IQM;
iqmData = (iqmData_t *)ri.Hunk_Alloc( size, h_low );
mod->modelData = iqmData;
@ -475,6 +491,7 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData->num_surfaces = header->num_meshes;
iqmData->num_joints = header->num_joints;
iqmData->num_poses = header->num_poses;
iqmData->blendWeightsType = blendWeightsType;
iqmData->surfaces = (srfIQModel_t *)(iqmData + 1);
iqmData->jointMats = (float *) (iqmData->surfaces + iqmData->num_surfaces);
iqmData->poseMats = iqmData->jointMats + 12 * header->num_joints;
@ -489,8 +506,15 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData->normals = iqmData->texcoords + 2 * header->num_vertexes;
iqmData->tangents = iqmData->normals + 3 * header->num_vertexes;
iqmData->blendIndexes = (byte *)(iqmData->tangents + 4 * header->num_vertexes);
iqmData->blendWeights = iqmData->blendIndexes + 4 * header->num_vertexes;
iqmData->colors = iqmData->blendWeights + 4 * header->num_vertexes;
if(blendWeightsType == IQM_FLOAT) {
iqmData->blendWeights.f = (float *)(iqmData->blendIndexes + 4 * header->num_vertexes);
iqmData->colors = (byte *)(iqmData->blendWeights.f + 4 * header->num_vertexes);
} else {
iqmData->blendWeights.b = iqmData->blendIndexes + 4 * header->num_vertexes;
iqmData->colors = iqmData->blendWeights.b + 4 * header->num_vertexes;
}
iqmData->jointParents = (int *)(iqmData->colors + 4 * header->num_vertexes);
iqmData->triangles = iqmData->jointParents + header->num_joints;
iqmData->names = (char *)(iqmData->triangles + 3 * header->num_triangles);
@ -636,14 +660,28 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
n * sizeof(float) );
break;
case IQM_BLENDINDEXES:
if( blendIndexesType == IQM_INT ) {
int *data = (int*)((byte*)header + vertexarray->offset);
for ( j = 0; j < n; j++ ) {
iqmData->blendIndexes[j] = (byte)LittleLong( data[j] );
}
} else {
Com_Memcpy( iqmData->blendIndexes,
(byte *)header + vertexarray->offset,
n * sizeof(byte) );
}
break;
case IQM_BLENDWEIGHTS:
Com_Memcpy( iqmData->blendWeights,
if( blendWeightsType == IQM_FLOAT ) {
float *data = (float*)((byte*)header + vertexarray->offset);
for ( j = 0; j < n; j++ ) {
iqmData->blendWeights.f[j] = LittleFloat( data[j] );
}
} else {
Com_Memcpy( iqmData->blendWeights.b,
(byte *)header + vertexarray->offset,
n * sizeof(byte) );
}
break;
case IQM_COLOR:
Com_Memcpy( iqmData->colors,
@ -1013,25 +1051,31 @@ void RB_IQMSurfaceAnim( surfaceType_t *surface ) {
float vtxMat[12];
float nrmMat[9];
int vtx = i + surf->first_vertex;
float blendWeights[4];
int numWeights;
if ( data->num_poses == 0 || data->blendWeights[4*vtx] <= 0 ) {
for ( numWeights = 0; numWeights < 4; numWeights++ ) {
if ( data->blendWeightsType == IQM_FLOAT )
blendWeights[numWeights] = data->blendWeights.f[4*vtx + numWeights];
else // IQM_BYTE
blendWeights[numWeights] = (float)data->blendWeights.b[4*vtx + numWeights] / 255.0f;
if ( blendWeights[numWeights] <= 0 )
break;
}
if ( data->num_poses == 0 || numWeights == 0 ) {
// no blend joint, use identity matrix.
Com_Memcpy( vtxMat, identityMatrix, 12 * sizeof (float) );
} else {
// compute the vertex matrix by blending the up to
// four blend weights
for( k = 0; k < 12; k++ )
vtxMat[k] = data->blendWeights[4*vtx]
* jointMats[12*data->blendIndexes[4*vtx] + k];
for( j = 1; j < 4; j++ ) {
if( data->blendWeights[4*vtx + j] <= 0 )
break;
for( k = 0; k < 12; k++ )
vtxMat[k] += data->blendWeights[4*vtx + j]
* jointMats[12*data->blendIndexes[4*vtx + j] + k];
Com_Memset( vtxMat, 0, 12 * sizeof (float) );
for( j = 0; j < numWeights; j++ ) {
for( k = 0; k < 12; k++ ) {
vtxMat[k] += blendWeights[j] * jointMats[12*data->blendIndexes[4*vtx + j] + k];
}
}
for( k = 0; k < 12; k++ )
vtxMat[k] *= 1.0f / 255.0f;
}
// compute the normal matrix as transpose of the adjoint

10
code/renderergl2/tr_local.h
View file

@ -1094,10 +1094,18 @@ typedef struct {
float *normals;
float *tangents;
byte *blendIndexes;
byte *blendWeights;
union {
float *f;
byte *b;
} blendWeights;
byte *colors;
int *triangles;
// depending upon the exporter, blend indices and weights might be int/float
// as opposed to the recommended byte/byte, for example Noesis exports
// int/float whereas the official IQM tool exports byte/byte
byte blendWeightsType; // IQM_BYTE or IQM_FLOAT
int *jointParents;
float *jointMats;
float *poseMats;

80
code/renderergl2/tr_model_iqm.c
View file

@ -150,6 +150,7 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData_t *iqmData;
srfIQModel_t *surface;
char meshName[MAX_QPATH];
byte blendIndexesType, blendWeightsType;
if( filesize < sizeof(iqmHeader_t) ) {
return qfalse;
@ -271,11 +272,20 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
}
break;
case IQM_BLENDINDEXES:
case IQM_BLENDWEIGHTS:
if( vertexarray->format != IQM_UBYTE ||
if( (vertexarray->format != IQM_INT &&
vertexarray->format != IQM_UBYTE) ||
vertexarray->size != 4 ) {
return qfalse;
}
blendIndexesType = vertexarray->format;
break;
case IQM_BLENDWEIGHTS:
if( (vertexarray->format != IQM_FLOAT &&
vertexarray->format != IQM_UBYTE) ||
vertexarray->size != 4 ) {
return qfalse;
}
blendWeightsType = vertexarray->format;
break;
case IQM_COLOR:
if( vertexarray->format != IQM_UBYTE ||
@ -458,12 +468,18 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
size += header->num_vertexes * 3 * sizeof(float); // normals
size += header->num_vertexes * 4 * sizeof(float); // tangents
size += header->num_vertexes * 4 * sizeof(byte); // blendIndexes
size += header->num_vertexes * 4 * sizeof(byte); // blendWeights
size += header->num_vertexes * 4 * sizeof(byte); // colors
size += header->num_joints * sizeof(int); // parents
size += header->num_triangles * 3 * sizeof(int); // triangles
size += joint_names; // joint names
// blendWeights
if (blendWeightsType == IQM_FLOAT) {
size += header->num_vertexes * 4 * sizeof(float);
} else {
size += header->num_vertexes * 4 * sizeof(byte);
}
mod->type = MOD_IQM;
iqmData = (iqmData_t *)ri.Hunk_Alloc( size, h_low );
mod->modelData = iqmData;
@ -475,6 +491,7 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData->num_surfaces = header->num_meshes;
iqmData->num_joints = header->num_joints;
iqmData->num_poses = header->num_poses;
iqmData->blendWeightsType = blendWeightsType;
iqmData->surfaces = (srfIQModel_t *)(iqmData + 1);
iqmData->jointMats = (float *) (iqmData->surfaces + iqmData->num_surfaces);
iqmData->poseMats = iqmData->jointMats + 12 * header->num_joints;
@ -489,8 +506,15 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
iqmData->normals = iqmData->texcoords + 2 * header->num_vertexes;
iqmData->tangents = iqmData->normals + 3 * header->num_vertexes;
iqmData->blendIndexes = (byte *)(iqmData->tangents + 4 * header->num_vertexes);
iqmData->blendWeights = iqmData->blendIndexes + 4 * header->num_vertexes;
iqmData->colors = iqmData->blendWeights + 4 * header->num_vertexes;
if(blendWeightsType == IQM_FLOAT) {
iqmData->blendWeights.f = (float *)(iqmData->blendIndexes + 4 * header->num_vertexes);
iqmData->colors = (byte *)(iqmData->blendWeights.f + 4 * header->num_vertexes);
} else {
iqmData->blendWeights.b = iqmData->blendIndexes + 4 * header->num_vertexes;
iqmData->colors = iqmData->blendWeights.b + 4 * header->num_vertexes;
}
iqmData->jointParents = (int *)(iqmData->colors + 4 * header->num_vertexes);
iqmData->triangles = iqmData->jointParents + header->num_joints;
iqmData->names = (char *)(iqmData->triangles + 3 * header->num_triangles);
@ -636,14 +660,28 @@ qboolean R_LoadIQM( model_t *mod, void *buffer, int filesize, const char *mod_na
n * sizeof(float) );
break;
case IQM_BLENDINDEXES:
if( blendIndexesType == IQM_INT ) {
int *data = (int*)((byte*)header + vertexarray->offset);
for ( j = 0; j < n; j++ ) {
iqmData->blendIndexes[j] = (byte)LittleLong( data[j] );
}
} else {
Com_Memcpy( iqmData->blendIndexes,
(byte *)header + vertexarray->offset,
n * sizeof(byte) );
}
break;
case IQM_BLENDWEIGHTS:
Com_Memcpy( iqmData->blendWeights,
if( blendWeightsType == IQM_FLOAT ) {
float *data = (float*)((byte*)header + vertexarray->offset);
for ( j = 0; j < n; j++ ) {
iqmData->blendWeights.f[j] = LittleFloat( data[j] );
}
} else {
Com_Memcpy( iqmData->blendWeights.b,
(byte *)header + vertexarray->offset,
n * sizeof(byte) );
}
break;
case IQM_COLOR:
Com_Memcpy( iqmData->colors,
@ -1016,25 +1054,31 @@ void RB_IQMSurfaceAnim( surfaceType_t *surface ) {
float vtxMat[12];
float nrmMat[9];
int vtx = i + surf->first_vertex;
float blendWeights[4];
int numWeights;
if ( data->num_poses == 0 || data->blendWeights[4*vtx] <= 0 ) {
for ( numWeights = 0; numWeights < 4; numWeights++ ) {
if ( data->blendWeightsType == IQM_FLOAT )
blendWeights[numWeights] = data->blendWeights.f[4*vtx + numWeights];
else // IQM_BYTE
blendWeights[numWeights] = (float)data->blendWeights.b[4*vtx + numWeights] / 255.0f;
if ( blendWeights[numWeights] <= 0 )
break;
}
if ( data->num_poses == 0 || numWeights == 0 ) {
// no blend joint, use identity matrix.
Com_Memcpy( vtxMat, identityMatrix, 12 * sizeof (float) );
} else {
// compute the vertex matrix by blending the up to
// four blend weights
for( k = 0; k < 12; k++ )
vtxMat[k] = data->blendWeights[4*vtx]
* jointMats[12*data->blendIndexes[4*vtx] + k];
for( j = 1; j < 4; j++ ) {
if( data->blendWeights[4*vtx + j] <= 0 )
break;
for( k = 0; k < 12; k++ )
vtxMat[k] += data->blendWeights[4*vtx + j]
* jointMats[12*data->blendIndexes[4*vtx + j] + k];
Com_Memset( vtxMat, 0, 12 * sizeof (float) );
for( j = 0; j < numWeights; j++ ) {
for( k = 0; k < 12; k++ ) {
vtxMat[k] += blendWeights[j] * jointMats[12*data->blendIndexes[4*vtx + j] + k];
}
}
for( k = 0; k < 12; k++ )
vtxMat[k] *= 1.0f / 255.0f;
}
// compute the normal matrix as transpose of the adjoint