static void R_InitUnitCubeVBO()
{
vec3_t mins = { -1, -1, -1 };
vec3_t maxs = { 1, 1, 1 };
vboData_t data;
R_SyncRenderThread();
tess.multiDrawPrimitives = 0;
tess.numIndexes = 0;
tess.numVertexes = 0;
Tess_MapVBOs( true );
Tess_AddCube( vec3_origin, mins, maxs, colorWhite );
memset( &data, 0, sizeof( data ) );
data.xyz = ( vec3_t * ) ri.Hunk_AllocateTempMemory( tess.numVertexes * sizeof( *data.xyz ) );
data.numVerts = tess.numVertexes;
for (unsigned i = 0; i < tess.numVertexes; i++ )
{
VectorCopy( tess.verts[ i ].xyz, data.xyz[ i ] );
}
tr.unitCubeVBO = R_CreateStaticVBO( "unitCube_VBO", data, VBO_LAYOUT_POSITION );
tr.unitCubeIBO = R_CreateStaticIBO( "unitCube_IBO", tess.indexes, tess.numIndexes );
ri.Hunk_FreeTempMemory( data.xyz );
tess.multiDrawPrimitives = 0;
tess.numIndexes = 0;
tess.numVertexes = 0;
tess.verts = nullptr;
tess.indexes = nullptr;
}
/*
=================
R_LoadIQModel
Load an IQM model and compute the joint matrices for every frame.
=================
*/
bool R_LoadIQModel( model_t *mod, void *buffer, int filesize,
const char *mod_name ) {
iqmHeader_t *header;
iqmVertexArray_t *vertexarray;
iqmTriangle_t *triangle;
iqmMesh_t *mesh;
iqmJoint_t *joint;
iqmPose_t *pose;
iqmAnim_t *anim;
unsigned short *framedata;
char *str, *name;
int len;
transform_t *trans, *poses;
float *bounds;
size_t size, len_names;
IQModel_t *IQModel;
IQAnim_t *IQAnim;
srfIQModel_t *surface;
vboData_t vboData;
float *weightbuf;
int *indexbuf;
i16vec4_t *qtangentbuf;
VBO_t *vbo;
IBO_t *ibo;
void *ptr;
u8vec4_t *weights;
if( !LoadIQMFile( buffer, filesize, mod_name, &len_names ) ) {
return false;
}
header = (iqmHeader_t *)buffer;
// compute required space
size = sizeof(IQModel_t);
size += header->num_meshes * sizeof( srfIQModel_t );
size += header->num_anims * sizeof( IQAnim_t );
size += header->num_joints * sizeof( transform_t );
size = PAD( size, 16 );
size += header->num_joints * header->num_frames * sizeof( transform_t );
if(header->ofs_bounds)
size += header->num_frames * 6 * sizeof(float); // model bounds
size += header->num_vertexes * 3 * sizeof(float); // positions
size += header->num_vertexes * 3 * sizeof(float); // normals
size += header->num_vertexes * 3 * sizeof(float); // tangents
size += header->num_vertexes * 3 * sizeof(float); // bitangents
size += header->num_vertexes * 2 * sizeof(int16_t); // texcoords
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_triangles * 3 * sizeof(int); // triangles
size += header->num_joints * sizeof(int); // parents
size += len_names; // joint and anim names
IQModel = (IQModel_t *)ri.Hunk_Alloc( size, ha_pref::h_low );
mod->type = modtype_t::MOD_IQM;
mod->iqm = IQModel;
ptr = IQModel + 1;
// fill header and setup pointers
IQModel->num_vertexes = header->num_vertexes;
IQModel->num_triangles = header->num_triangles;
IQModel->num_frames = header->num_frames;
IQModel->num_surfaces = header->num_meshes;
IQModel->num_joints = header->num_joints;
IQModel->num_anims = header->num_anims;
IQModel->surfaces = (srfIQModel_t *)ptr;
ptr = IQModel->surfaces + header->num_meshes;
if( header->ofs_anims ) {
IQModel->anims = (IQAnim_t *)ptr;
ptr = IQModel->anims + header->num_anims;
} else {
IQModel->anims = nullptr;
}
IQModel->joints = (transform_t *)PADP(ptr, 16);
ptr = IQModel->joints + header->num_joints;
if( header->ofs_poses ) {
poses = (transform_t *)ptr;
ptr = poses + header->num_poses * header->num_frames;
} else {
poses = nullptr;
}
if( header->ofs_bounds ) {
bounds = (float *)ptr;
ptr = bounds + 6 * header->num_frames;
} else {
bounds = nullptr;
}
IQModel->positions = (float *)ptr;
ptr = IQModel->positions + 3 * header->num_vertexes;
IQModel->normals = (float *)ptr;
ptr = IQModel->normals + 3 * header->num_vertexes;
IQModel->tangents = (float *)ptr;
ptr = IQModel->tangents + 3 * header->num_vertexes;
IQModel->bitangents = (float *)ptr;
ptr = IQModel->bitangents + 3 * header->num_vertexes;
IQModel->texcoords = (int16_t *)ptr;
ptr = IQModel->texcoords + 2 * header->num_vertexes;
IQModel->blendIndexes = (byte *)ptr;
ptr = IQModel->blendIndexes + 4 * header->num_vertexes;
IQModel->blendWeights = (byte *)ptr;
ptr = IQModel->blendWeights + 4 * header->num_vertexes;
IQModel->colors = (byte *)ptr;
ptr = IQModel->colors + 4 * header->num_vertexes;
IQModel->jointParents = (int *)ptr;
ptr = IQModel->jointParents + header->num_joints;
IQModel->triangles = (int *)ptr;
ptr = IQModel->triangles + 3 * header->num_triangles;
str = (char *)ptr;
IQModel->jointNames = str;
// copy joint names
joint = ( iqmJoint_t* )IQMPtr( header, header->ofs_joints );
for(unsigned i = 0; i < header->num_joints; i++, joint++ ) {
name = ( char* )IQMPtr( header, header->ofs_text + joint->name );
len = strlen( name ) + 1;
Com_Memcpy( str, name, len );
str += len;
}
// setup animations
IQAnim = IQModel->anims;
anim = ( iqmAnim_t* )IQMPtr( header, header->ofs_anims );
for(int i = 0; i < IQModel->num_anims; i++, IQAnim++, anim++ ) {
IQAnim->num_frames = anim->num_frames;
IQAnim->framerate = anim->framerate;
IQAnim->num_joints = header->num_joints;
IQAnim->flags = anim->flags;
IQAnim->jointParents = IQModel->jointParents;
if( poses ) {
IQAnim->poses = poses + anim->first_frame * header->num_poses;
} else {
IQAnim->poses = nullptr;
}
if( bounds ) {
IQAnim->bounds = bounds + anim->first_frame * 6;
} else {
IQAnim->bounds = nullptr;
}
IQAnim->name = str;
IQAnim->jointNames = IQModel->jointNames;
name = ( char* )IQMPtr( header, header->ofs_text + anim->name );
len = strlen( name ) + 1;
Com_Memcpy( str, name, len );
str += len;
}
// calculate joint transforms
trans = IQModel->joints;
joint = ( iqmJoint_t* )IQMPtr( header, header->ofs_joints );
for(unsigned i = 0; i < header->num_joints; i++, joint++, trans++ ) {
if( joint->parent >= (int) i ) {
Log::Warn("R_LoadIQModel: file %s contains an invalid parent joint number.",
mod_name );
return false;
}
TransInitRotationQuat( joint->rotate, trans );
TransAddScale( joint->scale[0], trans );
TransAddTranslation( joint->translate, trans );
if( joint->parent >= 0 ) {
TransCombine( trans, &IQModel->joints[ joint->parent ],
trans );
}
IQModel->jointParents[i] = joint->parent;
}
// calculate pose transforms
framedata = ( short unsigned int* )IQMPtr( header, header->ofs_frames );
trans = poses;
for(unsigned i = 0; i < header->num_frames; i++ ) {
pose = ( iqmPose_t* )IQMPtr( header, header->ofs_poses );
for(unsigned j = 0; j < header->num_poses; j++, pose++, trans++ ) {
vec3_t translate;
quat_t rotate;
vec3_t scale;
translate[0] = pose->channeloffset[0];
if( pose->mask & 0x001)
translate[0] += *framedata++ * pose->channelscale[0];
translate[1] = pose->channeloffset[1];
if( pose->mask & 0x002)
translate[1] += *framedata++ * pose->channelscale[1];
translate[2] = pose->channeloffset[2];
if( pose->mask & 0x004)
translate[2] += *framedata++ * pose->channelscale[2];
rotate[0] = pose->channeloffset[3];
if( pose->mask & 0x008)
rotate[0] += *framedata++ * pose->channelscale[3];
rotate[1] = pose->channeloffset[4];
if( pose->mask & 0x010)
rotate[1] += *framedata++ * pose->channelscale[4];
rotate[2] = pose->channeloffset[5];
if( pose->mask & 0x020)
rotate[2] += *framedata++ * pose->channelscale[5];
rotate[3] = pose->channeloffset[6];
if( pose->mask & 0x040)
rotate[3] += *framedata++ * pose->channelscale[6];
scale[0] = pose->channeloffset[7];
if( pose->mask & 0x080)
scale[0] += *framedata++ * pose->channelscale[7];
scale[1] = pose->channeloffset[8];
if( pose->mask & 0x100)
scale[1] += *framedata++ * pose->channelscale[8];
scale[2] = pose->channeloffset[9];
if( pose->mask & 0x200)
scale[2] += *framedata++ * pose->channelscale[9];
if( scale[0] < 0.0f ||
(int)( scale[0] - scale[1] ) ||
(int)( scale[1] - scale[2] ) ) {
Log::Warn("R_LoadIQM: file %s contains an invalid scale.", mod_name );
return false;
}
// construct transformation
TransInitRotationQuat( rotate, trans );
TransAddScale( scale[0], trans );
TransAddTranslation( translate, trans );
}
}
// copy vertexarrays and indexes
vertexarray = ( iqmVertexArray_t* )IQMPtr( header, header->ofs_vertexarrays );
for(unsigned i = 0; i < header->num_vertexarrays; i++, vertexarray++ ) {
int n;
// total number of values
n = header->num_vertexes * vertexarray->size;
switch( vertexarray->type ) {
case IQM_POSITION:
ClearBounds( IQModel->bounds[ 0 ], IQModel->bounds[ 1 ] );
Com_Memcpy( IQModel->positions,
IQMPtr( header, vertexarray->offset ),
n * sizeof(float) );
for( int j = 0; j < n; j += vertexarray->size ) {
AddPointToBounds( &IQModel->positions[ j ],
IQModel->bounds[ 0 ],
IQModel->bounds[ 1 ] );
}
IQModel->internalScale = BoundsMaxExtent( IQModel->bounds[ 0 ], IQModel->bounds[ 1 ] );
if( IQModel->internalScale > 0.0f ) {
float inverseScale = 1.0f / IQModel->internalScale;
for( int j = 0; j < n; j += vertexarray->size ) {
VectorScale( &IQModel->positions[ j ],
inverseScale,
&IQModel->positions[ j ] );
}
}
break;
case IQM_NORMAL:
Com_Memcpy( IQModel->normals,
IQMPtr( header, vertexarray->offset ),
n * sizeof(float) );
break;
case IQM_TANGENT:
BuildTangents( header->num_vertexes,
( float* )IQMPtr( header, vertexarray->offset ),
IQModel->normals, IQModel->tangents,
IQModel->bitangents );
break;
case IQM_TEXCOORD:
for( int j = 0; j < n; j++ ) {
IQModel->texcoords[ j ] = floatToHalf( ((float *)IQMPtr( header, vertexarray->offset ))[ j ] );
}
break;
case IQM_BLENDINDEXES:
Com_Memcpy( IQModel->blendIndexes,
IQMPtr( header, vertexarray->offset ),
n * sizeof(byte) );
break;
case IQM_BLENDWEIGHTS:
weights = (u8vec4_t *)IQMPtr( header, vertexarray->offset );
for(unsigned j = 0; j < header->num_vertexes; j++ ) {
IQModel->blendWeights[ 4 * j + 0 ] = 255 - weights[ j ][ 1 ] - weights[ j ][ 2 ] - weights[ j ][ 3 ];
IQModel->blendWeights[ 4 * j + 1 ] = weights[ j ][ 1 ];
IQModel->blendWeights[ 4 * j + 2 ] = weights[ j ][ 2 ];
IQModel->blendWeights[ 4 * j + 3 ] = weights[ j ][ 3 ];
}
break;
case IQM_COLOR:
Com_Memcpy( IQModel->colors,
IQMPtr( header, vertexarray->offset ),
n * sizeof(byte) );
break;
}
}
// copy triangles
triangle = ( iqmTriangle_t* )IQMPtr( header, header->ofs_triangles );
for(unsigned i = 0; i < header->num_triangles; i++, triangle++ ) {
IQModel->triangles[3*i+0] = triangle->vertex[0];
IQModel->triangles[3*i+1] = triangle->vertex[1];
IQModel->triangles[3*i+2] = triangle->vertex[2];
}
// convert data where necessary and create VBO
if( r_vboModels->integer && glConfig2.vboVertexSkinningAvailable
&& IQModel->num_joints <= glConfig2.maxVertexSkinningBones ) {
if( IQModel->blendIndexes ) {
indexbuf = (int *)ri.Hunk_AllocateTempMemory( sizeof(int[4]) * IQModel->num_vertexes );
for(int i = 0; i < IQModel->num_vertexes; i++ ) {
indexbuf[ 4 * i + 0 ] = IQModel->blendIndexes[ 4 * i + 0 ];
indexbuf[ 4 * i + 1 ] = IQModel->blendIndexes[ 4 * i + 1 ];
indexbuf[ 4 * i + 2 ] = IQModel->blendIndexes[ 4 * i + 2 ];
indexbuf[ 4 * i + 3 ] = IQModel->blendIndexes[ 4 * i + 3 ];
}
} else {
indexbuf = nullptr;
}
if( IQModel->blendWeights ) {
const float weightscale = 1.0f / 255.0f;
weightbuf = (float *)ri.Hunk_AllocateTempMemory( sizeof(vec4_t) * IQModel->num_vertexes );
for(int i = 0; i < IQModel->num_vertexes; i++ ) {
if( IQModel->blendWeights[ 4 * i + 0 ] == 0 &&
IQModel->blendWeights[ 4 * i + 1 ] == 0 &&
IQModel->blendWeights[ 4 * i + 2 ] == 0 &&
IQModel->blendWeights[ 4 * i + 3 ] == 0 )
IQModel->blendWeights[ 4 * i + 0 ] = 255;
weightbuf[ 4 * i + 0 ] = weightscale * IQModel->blendWeights[ 4 * i + 0 ];
weightbuf[ 4 * i + 1 ] = weightscale * IQModel->blendWeights[ 4 * i + 1 ];
weightbuf[ 4 * i + 2 ] = weightscale * IQModel->blendWeights[ 4 * i + 2 ];
weightbuf[ 4 * i + 3 ] = weightscale * IQModel->blendWeights[ 4 * i + 3 ];
}
} else {
weightbuf = nullptr;
}
qtangentbuf = (i16vec4_t *)ri.Hunk_AllocateTempMemory( sizeof( i16vec4_t ) * IQModel->num_vertexes );
for(int i = 0; i < IQModel->num_vertexes; i++ ) {
R_TBNtoQtangents( &IQModel->tangents[ 3 * i ],
&IQModel->bitangents[ 3 * i ],
&IQModel->normals[ 3 * i ],
qtangentbuf[ i ] );
}
vboData.xyz = (vec3_t *)IQModel->positions;
vboData.qtangent = qtangentbuf;
vboData.numFrames = 0;
vboData.color = (u8vec4_t *)IQModel->colors;
vboData.st = (i16vec2_t *)IQModel->texcoords;
vboData.noLightCoords = true;
vboData.boneIndexes = (int (*)[4])indexbuf;
vboData.boneWeights = (vec4_t *)weightbuf;
vboData.numVerts = IQModel->num_vertexes;
vbo = R_CreateStaticVBO( "IQM surface VBO", vboData,
vboLayout_t::VBO_LAYOUT_SKELETAL );
if( qtangentbuf ) {
ri.Hunk_FreeTempMemory( qtangentbuf );
}
if( weightbuf ) {
ri.Hunk_FreeTempMemory( weightbuf );
}
if( indexbuf ) {
ri.Hunk_FreeTempMemory( indexbuf );
}
// create IBO
ibo = R_CreateStaticIBO( "IQM surface IBO", ( glIndex_t* )IQModel->triangles, IQModel->num_triangles * 3 );
} else {
vbo = nullptr;
ibo = nullptr;
}
// register shaders
// overwrite the material offset with the shader index
mesh = ( iqmMesh_t* )IQMPtr( header, header->ofs_meshes );
surface = IQModel->surfaces;
for(unsigned i = 0; i < header->num_meshes; i++, mesh++, surface++ ) {
surface->surfaceType = surfaceType_t::SF_IQM;
if( mesh->name ) {
surface->name = str;
name = ( char* )IQMPtr( header, header->ofs_text + mesh->name );
len = strlen( name ) + 1;
Com_Memcpy( str, name, len );
str += len;
} else {
surface->name = nullptr;
}
surface->shader = R_FindShader( ( char* )IQMPtr(header, header->ofs_text + mesh->material),
shaderType_t::SHADER_3D_DYNAMIC, RSF_DEFAULT );
if( surface->shader->defaultShader )
surface->shader = tr.defaultShader;
surface->data = IQModel;
surface->first_vertex = mesh->first_vertex;
surface->num_vertexes = mesh->num_vertexes;
surface->first_triangle = mesh->first_triangle;
surface->num_triangles = mesh->num_triangles;
surface->vbo = vbo;
surface->ibo = ibo;
}
// copy model bounds
if(header->ofs_bounds)
{
iqmBounds_t *ptr = ( iqmBounds_t* )IQMPtr( header, header->ofs_bounds );
for(unsigned i = 0; i < header->num_frames; i++)
{
VectorCopy( ptr->bbmin, bounds );
bounds += 3;
VectorCopy( ptr->bbmax, bounds );
bounds += 3;
ptr++;
}
}
// register animations
IQAnim = IQModel->anims;
if( header->num_anims == 1 ) {
RE_RegisterAnimationIQM( mod_name, IQAnim );
}
for(unsigned i = 0; i < header->num_anims; i++, IQAnim++ ) {
char name[ MAX_QPATH ];
Com_sprintf( name, MAX_QPATH, "%s:%s", mod_name, IQAnim->name );
RE_RegisterAnimationIQM( name, IQAnim );
}
// build VBO
return true;
}
