/*
=============
Tess_SurfaceMDV
=============
*/
static void Tess_SurfaceMDV( mdvSurface_t *srf )
{
int i, j;
int numIndexes = 0;
int numVertexes;
mdvXyz_t *oldVert, *newVert;
mdvNormal_t *oldNormal, *newNormal;
mdvSt_t *st;
srfTriangle_t *tri;
float backlerp;
float oldXyzScale, newXyzScale;
GLimp_LogComment( "--- Tess_SurfaceMDV ---\n" );
if ( backEnd.currentEntity->e.oldframe == backEnd.currentEntity->e.frame )
{
backlerp = 0;
}
else
{
backlerp = backEnd.currentEntity->e.backlerp;
}
newXyzScale = ( 1.0f - backlerp );
oldXyzScale = backlerp;
Tess_CheckOverflow( srf->numVerts, srf->numTriangles * 3 );
numIndexes = srf->numTriangles * 3;
for ( i = 0, tri = srf->triangles; i < srf->numTriangles; i++, tri++ )
{
tess.indexes[ tess.numIndexes + i * 3 + 0 ] = tess.numVertexes + tri->indexes[ 0 ];
tess.indexes[ tess.numIndexes + i * 3 + 1 ] = tess.numVertexes + tri->indexes[ 1 ];
tess.indexes[ tess.numIndexes + i * 3 + 2 ] = tess.numVertexes + tri->indexes[ 2 ];
}
newVert = srf->verts + ( backEnd.currentEntity->e.frame * srf->numVerts );
oldVert = srf->verts + ( backEnd.currentEntity->e.oldframe * srf->numVerts );
newNormal = srf->normals + ( backEnd.currentEntity->e.frame * srf->numVerts );
oldNormal = srf->normals + ( backEnd.currentEntity->e.oldframe * srf->numVerts );
st = srf->st;
numVertexes = srf->numVerts;
for ( j = 0; j < numVertexes; j++, newVert++, oldVert++, st++ )
{
vec3_t tmpVert;
if ( backlerp == 0 )
{
// just copy
VectorCopy( newVert->xyz, tmpVert );
}
else
{
// interpolate the xyz
VectorScale( oldVert->xyz, oldXyzScale, tmpVert );
VectorMA( tmpVert, newXyzScale, newVert->xyz, tmpVert );
}
tess.verts[ tess.numVertexes + j ].xyz[ 0 ] = tmpVert[ 0 ];
tess.verts[ tess.numVertexes + j ].xyz[ 1 ] = tmpVert[ 1 ];
tess.verts[ tess.numVertexes + j ].xyz[ 2 ] = tmpVert[ 2 ];
tess.verts[ tess.numVertexes + j ].texCoords[ 0 ] = floatToHalf( st->st[ 0 ] );
tess.verts[ tess.numVertexes + j ].texCoords[ 1 ] = floatToHalf( st->st[ 1 ] );
}
tess.attribsSet |= ATTR_POSITION | ATTR_TEXCOORD;
// calc tangent spaces
if ( !tess.skipTangentSpaces )
{
int i;
float *v;
const float *v0, *v1, *v2;
const int16_t *t0, *t1, *t2;
vec3_t tangent, *tangents;
vec3_t binormal, *binormals;
vec3_t *normals;
glIndex_t *indices;
tess.attribsSet |= ATTR_QTANGENT;
tangents = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
binormals = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
normals = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
for ( i = 0; i < numVertexes; i++ )
{
VectorClear( tangents[ i ] );
VectorClear( binormals[ i ] );
if ( backlerp == 0 )
{
// just copy
VectorCopy( newNormal->normal, normals[ i ] );
}
else
{
// interpolate the xyz
VectorScale( oldNormal->normal, oldXyzScale, normals[ i ] );
VectorMA( normals[ i ], newXyzScale, newNormal->normal, normals[ i ] );
VectorNormalizeFast( normals[ i ] );
}
}
for ( i = 0, indices = tess.indexes + tess.numIndexes; i < numIndexes; i += 3, indices += 3 )
{
v0 = tess.verts[ indices[ 0 ] ].xyz;
v1 = tess.verts[ indices[ 1 ] ].xyz;
v2 = tess.verts[ indices[ 2 ] ].xyz;
t0 = tess.verts[ indices[ 0 ] ].texCoords;
t1 = tess.verts[ indices[ 1 ] ].texCoords;
t2 = tess.verts[ indices[ 2 ] ].texCoords;
R_CalcTangents( tangent, binormal, v0, v1, v2, t0, t1, t2 );
for ( j = 0; j < 3; j++ )
{
v = tangents[ indices[ j ] - tess.numVertexes ];
VectorAdd( v, tangent, v );
v = binormals[ indices[ j ] - tess.numVertexes ];
VectorAdd( v, binormal, v );
}
}
for ( i = 0; i < numVertexes; i++ )
{
R_TBNtoQtangents( tangents[ i ], binormals[ i ],
normals[ i ], tess.verts[ numVertexes + i ].qtangents );
}
ri.Hunk_FreeTempMemory( normals );
ri.Hunk_FreeTempMemory( binormals );
ri.Hunk_FreeTempMemory( tangents );
}
tess.numIndexes += numIndexes;
tess.numVertexes += numVertexes;
}
/*
==============
Tess_AddQuadStampExt2
==============
*/
void Tess_AddQuadStampExt2( vec4_t quadVerts[ 4 ], const vec4_t color, float s1, float t1, float s2, float t2 )
{
int i;
vec3_t normal, tangent, binormal;
int ndx;
GLimp_LogComment( "--- Tess_AddQuadStampExt2 ---\n" );
Tess_CheckOverflow( 4, 6 );
ndx = tess.numVertexes;
// triangle indexes for a simple quad
tess.indexes[ tess.numIndexes ] = ndx;
tess.indexes[ tess.numIndexes + 1 ] = ndx + 1;
tess.indexes[ tess.numIndexes + 2 ] = ndx + 3;
tess.indexes[ tess.numIndexes + 3 ] = ndx + 3;
tess.indexes[ tess.numIndexes + 4 ] = ndx + 1;
tess.indexes[ tess.numIndexes + 5 ] = ndx + 2;
VectorCopy( quadVerts[ 0 ], tess.verts[ ndx + 0 ].xyz );
VectorCopy( quadVerts[ 1 ], tess.verts[ ndx + 1 ].xyz );
VectorCopy( quadVerts[ 2 ], tess.verts[ ndx + 2 ].xyz );
VectorCopy( quadVerts[ 3 ], tess.verts[ ndx + 3 ].xyz );
tess.attribsSet |= ATTR_POSITION | ATTR_COLOR | ATTR_TEXCOORD | ATTR_QTANGENT;
// constant normal all the way around
vec2_t st[ 3 ] = { { s1, t1 }, { s2, t1 }, { s2, t2 } };
R_CalcFaceNormal( normal, quadVerts[ 0 ], quadVerts[ 1 ], quadVerts[ 2 ] );
R_CalcTangents( tangent, binormal,
quadVerts[ 0 ], quadVerts[ 1 ], quadVerts[ 2 ],
st[ 0 ], st[ 1 ], st[ 2 ] );
//if ( !calcNormals )
//{
// VectorNegate( backEnd.viewParms.orientation.axis[ 0 ], normal );
//}
R_TBNtoQtangents( tangent, binormal, normal, tess.verts[ ndx ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 1 ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 2 ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 3 ].qtangents );
// standard square texture coordinates
tess.verts[ ndx ].texCoords[ 0 ] = floatToHalf( s1 );
tess.verts[ ndx ].texCoords[ 1 ] = floatToHalf( t1 );
tess.verts[ ndx + 1 ].texCoords[ 0 ] = floatToHalf( s2 );
tess.verts[ ndx + 1 ].texCoords[ 1 ] = floatToHalf( t1 );
tess.verts[ ndx + 2 ].texCoords[ 0 ] = floatToHalf( s2 );
tess.verts[ ndx + 2 ].texCoords[ 1 ] = floatToHalf( t2 );
tess.verts[ ndx + 3 ].texCoords[ 0 ] = floatToHalf( s1 );
tess.verts[ ndx + 3 ].texCoords[ 1 ] = floatToHalf( t2 );
// constant color all the way around
// should this be identity and let the shader specify from entity?
u8vec4_t iColor;
floatToUnorm8( color, iColor );
for ( i = 0; i < 4; i++ )
{
Vector4Copy( iColor, tess.verts[ ndx + i ].color );
}
tess.numVertexes += 4;
tess.numIndexes += 6;
}
/*
=============
Tess_SurfacePolychain
=============
*/
static void Tess_SurfacePolychain( srfPoly_t *p )
{
int i, j;
int numVertexes;
int numIndexes;
GLimp_LogComment( "--- Tess_SurfacePolychain ---\n" );
Tess_CheckOverflow( p->numVerts, 3 * ( p->numVerts - 2 ) );
// fan triangles into the tess array
numVertexes = 0;
for ( i = 0; i < p->numVerts; i++ )
{
VectorCopy( p->verts[ i ].xyz, tess.verts[ tess.numVertexes + i ].xyz );
tess.verts[ tess.numVertexes + i ].texCoords[ 0 ] = floatToHalf( p->verts[ i ].st[ 0 ] );
tess.verts[ tess.numVertexes + i ].texCoords[ 1 ] = floatToHalf( p->verts[ i ].st[ 1 ] );
Vector4Copy( p->verts[ i ].modulate, tess.verts[ tess.numVertexes + i ].color );
numVertexes++;
}
// generate fan indexes into the tess array
numIndexes = 0;
for ( i = 0; i < p->numVerts - 2; i++ )
{
tess.indexes[ tess.numIndexes + i * 3 + 0 ] = tess.numVertexes;
tess.indexes[ tess.numIndexes + i * 3 + 1 ] = tess.numVertexes + i + 1;
tess.indexes[ tess.numIndexes + i * 3 + 2 ] = tess.numVertexes + i + 2;
numIndexes += 3;
}
tess.attribsSet |= ATTR_POSITION | ATTR_TEXCOORD | ATTR_COLOR;
// calc tangent spaces
if ( tess.surfaceShader->interactLight && !tess.skipTangentSpaces )
{
int i;
float *v;
const float *v0, *v1, *v2;
const int16_t *t0, *t1, *t2;
vec3_t tangent, *tangents;
vec3_t binormal, *binormals;
vec3_t normal, *normals;
glIndex_t *indices;
tangents = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
binormals = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
normals = (vec3_t *)ri.Hunk_AllocateTempMemory( numVertexes * sizeof( vec3_t ) );
for ( i = 0; i < numVertexes; i++ )
{
VectorClear( tangents[ i ] );
VectorClear( binormals[ i ] );
VectorClear( normals[ i ] );
}
for ( i = 0, indices = tess.indexes + tess.numIndexes; i < numIndexes; i += 3, indices += 3 )
{
v0 = tess.verts[ indices[ 0 ] ].xyz;
v1 = tess.verts[ indices[ 1 ] ].xyz;
v2 = tess.verts[ indices[ 2 ] ].xyz;
t0 = tess.verts[ indices[ 0 ] ].texCoords;
t1 = tess.verts[ indices[ 1 ] ].texCoords;
t2 = tess.verts[ indices[ 2 ] ].texCoords;
R_CalcFaceNormal( normal, v0, v1, v2 );
R_CalcTangents( tangent, binormal, v0, v1, v2, t0, t1, t2 );
for ( j = 0; j < 3; j++ )
{
v = tangents[ indices[ j ] - tess.numVertexes ];
VectorAdd( v, tangent, v );
v = binormals[ indices[ j ] - tess.numVertexes ];
VectorAdd( v, binormal, v );
v = normals[ indices[ j ] - tess.numVertexes ];
VectorAdd( v, normal, v );
}
}
for ( i = 0; i < numVertexes; i++ )
{
VectorNormalizeFast( normals[ i ] );
R_TBNtoQtangents( tangents[ i ], binormals[ i ],
normals[ i ], tess.verts[ tess.numVertexes + i ].qtangents );
}
ri.Hunk_FreeTempMemory( normals );
ri.Hunk_FreeTempMemory( binormals );
ri.Hunk_FreeTempMemory( tangents );
tess.attribsSet |= ATTR_QTANGENT;
}
tess.numIndexes += numIndexes;
tess.numVertexes += numVertexes;
}
/*
==============
Tess_AddQuadStampExt
==============
*/
void Tess_AddQuadStampExt( vec3_t origin, vec3_t left, vec3_t up, const vec4_t color, float s1, float t1, float s2, float t2 )
{
int i;
vec3_t normal;
int ndx;
GLimp_LogComment( "--- Tess_AddQuadStampExt ---\n" );
Tess_CheckOverflow( 4, 6 );
ndx = tess.numVertexes;
// triangle indexes for a simple quad
tess.indexes[ tess.numIndexes ] = ndx;
tess.indexes[ tess.numIndexes + 1 ] = ndx + 1;
tess.indexes[ tess.numIndexes + 2 ] = ndx + 3;
tess.indexes[ tess.numIndexes + 3 ] = ndx + 3;
tess.indexes[ tess.numIndexes + 4 ] = ndx + 1;
tess.indexes[ tess.numIndexes + 5 ] = ndx + 2;
tess.verts[ ndx ].xyz[ 0 ] = origin[ 0 ] + left[ 0 ] + up[ 0 ];
tess.verts[ ndx ].xyz[ 1 ] = origin[ 1 ] + left[ 1 ] + up[ 1 ];
tess.verts[ ndx ].xyz[ 2 ] = origin[ 2 ] + left[ 2 ] + up[ 2 ];
tess.verts[ ndx + 1 ].xyz[ 0 ] = origin[ 0 ] - left[ 0 ] + up[ 0 ];
tess.verts[ ndx + 1 ].xyz[ 1 ] = origin[ 1 ] - left[ 1 ] + up[ 1 ];
tess.verts[ ndx + 1 ].xyz[ 2 ] = origin[ 2 ] - left[ 2 ] + up[ 2 ];
tess.verts[ ndx + 2 ].xyz[ 0 ] = origin[ 0 ] - left[ 0 ] - up[ 0 ];
tess.verts[ ndx + 2 ].xyz[ 1 ] = origin[ 1 ] - left[ 1 ] - up[ 1 ];
tess.verts[ ndx + 2 ].xyz[ 2 ] = origin[ 2 ] - left[ 2 ] - up[ 2 ];
tess.verts[ ndx + 3 ].xyz[ 0 ] = origin[ 0 ] + left[ 0 ] - up[ 0 ];
tess.verts[ ndx + 3 ].xyz[ 1 ] = origin[ 1 ] + left[ 1 ] - up[ 1 ];
tess.verts[ ndx + 3 ].xyz[ 2 ] = origin[ 2 ] + left[ 2 ] - up[ 2 ];
// constant normal all the way around
VectorSubtract( vec3_origin, backEnd.viewParms.orientation.axis[ 0 ], normal );
R_TBNtoQtangents( left, up, normal, tess.verts[ ndx ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 1 ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 2 ].qtangents );
Vector4Copy( tess.verts[ ndx ].qtangents, tess.verts[ ndx + 3 ].qtangents );
// standard square texture coordinates
tess.verts[ ndx ].texCoords[ 0 ] = floatToHalf( s1 );
tess.verts[ ndx ].texCoords[ 1 ] = floatToHalf( t1 );
tess.verts[ ndx + 1 ].texCoords[ 0 ] = floatToHalf( s2 );
tess.verts[ ndx + 1 ].texCoords[ 1 ] = floatToHalf( t1 );
tess.verts[ ndx + 2 ].texCoords[ 0 ] = floatToHalf( s2 );
tess.verts[ ndx + 2 ].texCoords[ 1 ] = floatToHalf( t2 );
tess.verts[ ndx + 3 ].texCoords[ 0 ] = floatToHalf( s1 );
tess.verts[ ndx + 3 ].texCoords[ 1 ] = floatToHalf( t2 );
// constant color all the way around
// should this be identity and let the shader specify from entity?
u8vec4_t iColor;
floatToUnorm8( color, iColor );
for ( i = 0; i < 4; i++ )
{
Vector4Copy( iColor, tess.verts[ ndx + i ].color );
}
tess.numVertexes += 4;
tess.numIndexes += 6;
tess.attribsSet |= ATTR_POSITION | ATTR_QTANGENT | ATTR_COLOR | ATTR_TEXCOORD;
}
/*
=================
Tess_SurfaceIQM
Compute vertices for this model surface
=================
*/
void Tess_SurfaceIQM( srfIQModel_t *surf ) {
IQModel_t *model = surf->data;
int i, j;
int offset = tess.numVertexes - surf->first_vertex;
GLimp_LogComment( "--- RB_SurfaceIQM ---\n" );
Tess_CheckOverflow( surf->num_vertexes, surf->num_triangles * 3 );
// compute bones
for ( i = 0; i < model->num_joints; i++ )
{
if ( backEnd.currentEntity->e.skeleton.type == SK_ABSOLUTE )
{
refBone_t *bone = &backEnd.currentEntity->e.skeleton.bones[ i ];
TransInverse( &model->joints[ i ], &bones[ i ] );
TransCombine( &bones[ i ], &bone->t, &bones[ i ] );
}
else
{
TransInit( &bones[ i ] );
}
TransAddScale( backEnd.currentEntity->e.skeleton.scale, &bones[ i ] );
TransInsScale( model->internalScale, &bones[ i ] );
}
if( surf->vbo && surf->ibo ) {
if( model->num_joints > 0 ) {
Com_Memcpy( tess.bones, bones, model->num_joints * sizeof(transform_t) );
tess.numBones = model->num_joints;
} else {
TransInitScale( model->internalScale * backEnd.currentEntity->e.skeleton.scale, &tess.bones[ 0 ] );
tess.numBones = 1;
}
R_BindVBO( surf->vbo );
R_BindIBO( surf->ibo );
tess.vboVertexSkinning = true;
tess.multiDrawIndexes[ tess.multiDrawPrimitives ] = ((glIndex_t *)nullptr) + surf->first_triangle * 3;
tess.multiDrawCounts[ tess.multiDrawPrimitives ] = surf->num_triangles * 3;
tess.multiDrawPrimitives++;
Tess_End();
return;
}
for ( i = 0; i < surf->num_triangles; i++ )
{
tess.indexes[ tess.numIndexes + i * 3 + 0 ] = offset + model->triangles[ 3 * ( surf->first_triangle + i ) + 0 ];
tess.indexes[ tess.numIndexes + i * 3 + 1 ] = offset + model->triangles[ 3 * ( surf->first_triangle + i ) + 1 ];
tess.indexes[ tess.numIndexes + i * 3 + 2 ] = offset + model->triangles[ 3 * ( surf->first_triangle + i ) + 2 ];
}
tess.attribsSet |= ATTR_POSITION | ATTR_TEXCOORD | ATTR_QTANGENT;
if( model->num_joints > 0 && model->blendWeights && model->blendIndexes ) {
// deform the vertices by the lerped bones
for ( i = 0; i < surf->num_vertexes; i++ )
{
int idxIn = surf->first_vertex + i;
int idxOut = tess.numVertexes + i;
const float weightFactor = 1.0f / 255.0f;
vec3_t tangent, binormal, normal, tmp;
if( model->blendWeights[ 4 * idxIn + 0 ] == 0 &&
model->blendWeights[ 4 * idxIn + 1 ] == 0 &&
model->blendWeights[ 4 * idxIn + 2 ] == 0 &&
model->blendWeights[ 4 * idxIn + 3 ] == 0 )
model->blendWeights[ 4 * idxIn + 0 ] = 255;
VectorClear( tess.verts[ idxOut ].xyz );
VectorClear( normal );
VectorClear( tangent );
VectorClear( binormal );
for ( j = 0; j < 4; j++ ) {
int bone = model->blendIndexes[ 4 * idxIn + j ];
float weight = weightFactor * model->blendWeights[ 4 * idxIn + j ];
TransformPoint( &bones[ bone ],
&model->positions[ 3 * idxIn ], tmp );
VectorMA( tess.verts[ idxOut ].xyz, weight, tmp,
tess.verts[ idxOut ].xyz );
TransformNormalVector( &bones[ bone ],
&model->normals[ 3 * idxIn ], tmp );
VectorMA( normal, weight, tmp, normal );
TransformNormalVector( &bones[ bone ],
&model->tangents[ 3 * idxIn ], tmp );
VectorMA( tangent, weight, tmp, tangent );
TransformNormalVector( &bones[ bone ],
&model->bitangents[ 3 * idxIn ], tmp );
VectorMA( binormal, weight, tmp, binormal );
}
VectorNormalize( normal );
VectorNormalize( tangent );
VectorNormalize( binormal );
R_TBNtoQtangents( tangent, binormal, normal, tess.verts[ idxOut ].qtangents );
tess.verts[ idxOut ].texCoords[ 0 ] = model->texcoords[ 2 * idxIn + 0 ];
tess.verts[ idxOut ].texCoords[ 1 ] = model->texcoords[ 2 * idxIn + 1 ];
}
} else {
for ( i = 0; i < surf->num_vertexes; i++ )
{
int idxIn = surf->first_vertex + i;
int idxOut = tess.numVertexes + i;
float scale = model->internalScale * backEnd.currentEntity->e.skeleton.scale;
VectorScale( &model->positions[ 3 * idxIn ], scale, tess.verts[ idxOut ].xyz );
R_TBNtoQtangents( &model->tangents[ 3 * idxIn ],
&model->bitangents[ 3 * idxIn ],
&model->normals[ 3 * idxIn ],
tess.verts[ idxOut ].qtangents );
tess.verts[ idxOut ].texCoords[ 0 ] = model->texcoords[ 2 * idxIn + 0 ];
tess.verts[ idxOut ].texCoords[ 1 ] = model->texcoords[ 2 * idxIn + 1 ];
}
}
tess.numIndexes += 3 * surf->num_triangles;
tess.numVertexes += surf->num_vertexes;
}
/*
==============
Tess_SurfaceMD5
==============
*/
static void Tess_SurfaceMD5( md5Surface_t *srf )
{
int j;
int numIndexes = 0;
int numVertexes;
md5Model_t *model;
md5Vertex_t *v;
srfTriangle_t *tri;
GLimp_LogComment( "--- Tess_SurfaceMD5 ---\n" );
Tess_CheckOverflow( srf->numVerts, srf->numTriangles * 3 );
model = srf->model;
numIndexes = srf->numTriangles * 3;
tri = srf->triangles;
for (unsigned i = 0; i < srf->numTriangles; i++, tri++ )
{
tess.indexes[ tess.numIndexes + i * 3 + 0 ] = tess.numVertexes + tri->indexes[ 0 ];
tess.indexes[ tess.numIndexes + i * 3 + 1 ] = tess.numVertexes + tri->indexes[ 1 ];
tess.indexes[ tess.numIndexes + i * 3 + 2 ] = tess.numVertexes + tri->indexes[ 2 ];
}
tess.attribsSet |= ATTR_POSITION | ATTR_TEXCOORD;
if ( tess.skipTangentSpaces )
{
// convert bones back to matrices
for (unsigned i = 0; i < model->numBones; i++ )
{
if ( backEnd.currentEntity->e.skeleton.type == SK_ABSOLUTE )
{
refBone_t *bone = &backEnd.currentEntity->e.skeleton.bones[ i ];
TransInitRotationQuat( model->bones[ i ].rotation, &bones[ i ] );
TransAddTranslation( model->bones[ i ].origin, &bones[ i ] );
TransInverse( &bones[ i ], &bones[ i ] );
TransCombine( &bones[ i ], &bone->t, &bones[ i ] );
TransAddScale( backEnd.currentEntity->e.skeleton.scale, &bones[ i ] );
}
else
{
TransInitRotationQuat( model->bones[ i ].rotation, &bones[i] );
TransAddTranslation( model->bones[ i ].origin, &bones[ i ] );
}
TransInsScale( model->internalScale, &bones[ i ] );
}
// deform the vertices by the lerped bones
numVertexes = srf->numVerts;
for ( j = 0, v = srf->verts; j < numVertexes; j++, v++ )
{
vec3_t tmp;
VectorClear( tess.verts[ tess.numVertexes + j ].xyz );
for (unsigned k = 0; k < v->numWeights; k++ ) {
TransformPoint( &bones[ v->boneIndexes[ k ] ],
v->position, tmp );
VectorMA( tess.verts[ tess.numVertexes + j ].xyz,
v->boneWeights[ k ], tmp,
tess.verts[ tess.numVertexes + j ].xyz );
}
tess.verts[ tess.numVertexes + j ].texCoords[ 0 ] = floatToHalf( v->texCoords[ 0 ] );
tess.verts[ tess.numVertexes + j ].texCoords[ 1 ] = floatToHalf( v->texCoords[ 1 ] );
}
}
else
{
tess.attribsSet |= ATTR_QTANGENT;
// convert bones back to matrices
for (unsigned i = 0; i < model->numBones; i++ )
{
if ( backEnd.currentEntity->e.skeleton.type == SK_ABSOLUTE )
{
refBone_t *bone = &backEnd.currentEntity->e.skeleton.bones[ i ];
TransInitRotationQuat( model->bones[ i ].rotation, &bones[ i ] );
TransAddTranslation( model->bones[ i ].origin, &bones[ i ] );
TransInverse( &bones[ i ], &bones[ i ] );
TransCombine( &bones[ i ], &bone->t, &bones[ i ] );
TransAddScale( backEnd.currentEntity->e.skeleton.scale, &bones[ i ] );
}
else
{
TransInitScale( backEnd.currentEntity->e.skeleton.scale, &bones[ i ] );
}
TransInsScale( model->internalScale, &bones[ i ] );
}
// deform the vertices by the lerped bones
numVertexes = srf->numVerts;
for ( j = 0, v = srf->verts; j < numVertexes; j++, v++ )
{
vec3_t tangent, binormal, normal, tmp;
VectorClear( tess.verts[ tess.numVertexes + j ].xyz );
VectorClear( normal );
VectorClear( binormal );
VectorClear( tangent );
for(unsigned k = 0; k < v->numWeights; k++ ) {
TransformPoint( &bones[ v->boneIndexes[ k ] ],
v->position, tmp );
VectorMA( tess.verts[ tess.numVertexes + j ].xyz,
v->boneWeights[ k ], tmp,
tess.verts[ tess.numVertexes + j ].xyz );
TransformNormalVector( &bones[ v->boneIndexes[ k ] ],
v->normal, tmp );
VectorMA( normal, v->boneWeights[ k ], tmp, normal );
TransformNormalVector( &bones[ v->boneIndexes[ k ] ],
v->tangent, tmp );
VectorMA( tangent, v->boneWeights[ k ], tmp, tangent );
TransformNormalVector( &bones[ v->boneIndexes[ k ] ],
v->binormal, tmp );
VectorMA( binormal, v->boneWeights[ k ], tmp, binormal );
}
VectorNormalize( normal );
VectorNormalize( tangent );
VectorNormalize( binormal );
R_TBNtoQtangents( tangent, binormal, normal, tess.verts[ tess.numVertexes + j ].qtangents );
tess.verts[ tess.numVertexes + j ].texCoords[ 0 ] = floatToHalf( v->texCoords[ 0 ] );
tess.verts[ tess.numVertexes + j ].texCoords[ 1 ] = floatToHalf( v->texCoords[ 1 ] );
}
}
tess.numIndexes += numIndexes;
tess.numVertexes += numVertexes;
}
/*
=================
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;
}
/*
=================
MakeMeshNormals
Handles all the complicated wrapping and degenerate cases
=================
*/
static void MakeMeshNormals( int width, int height, srfVert_t ctrl[ MAX_GRID_SIZE ][ MAX_GRID_SIZE ] )
{
int i, j, k, dist;
vec3_t tangent, binormal, normal;
vec3_t sum, sumTangents, sumBinormals;
int count;
vec3_t base;
vec3_t delta;
int x, y;
srfVert_t *dv;
vec3_t around[ 8 ], temp;
bool good[ 8 ];
vec2_t st[8];
bool wrapWidth, wrapHeight;
float len;
static int neighbors[ 8 ][ 2 ] =
{
{ 0, 1 }, { 1, 1 }, { 1, 0 }, { 1, -1 }, { 0, -1 }, { -1, -1 }, { -1, 0 }, { -1, 1 }
};
wrapWidth = false;
for ( i = 0; i < height; i++ )
{
VectorSubtract( ctrl[ i ][ 0 ].xyz, ctrl[ i ][ width - 1 ].xyz, delta );
len = VectorLengthSquared( delta );
if ( len > 1.0 )
{
break;
}
}
if ( i == height )
{
wrapWidth = true;
}
wrapHeight = false;
for ( i = 0; i < width; i++ )
{
VectorSubtract( ctrl[ 0 ][ i ].xyz, ctrl[ height - 1 ][ i ].xyz, delta );
len = VectorLengthSquared( delta );
if ( len > 1.0 )
{
break;
}
}
if ( i == width )
{
wrapHeight = true;
}
for ( i = 0; i < width; i++ )
{
for ( j = 0; j < height; j++ )
{
count = 0;
dv = &ctrl[ j ][ i ];
VectorCopy( dv->xyz, base );
for ( k = 0; k < 8; k++ )
{
VectorClear( around[ k ] );
good[ k ] = false;
for ( dist = 1; dist <= 3; dist++ )
{
x = i + neighbors[ k ][ 0 ] * dist;
y = j + neighbors[ k ][ 1 ] * dist;
if ( wrapWidth )
{
if ( x < 0 )
{
x = width - 1 + x;
}
else if ( x >= width )
{
x = 1 + x - width;
}
}
if ( wrapHeight )
{
if ( y < 0 )
{
y = height - 1 + y;
}
else if ( y >= height )
{
y = 1 + y - height;
}
}
if ( x < 0 || x >= width || y < 0 || y >= height )
{
break; // edge of patch
}
VectorSubtract( ctrl[ y ][ x ].xyz, base, temp );
if ( VectorNormalize2( temp, temp ) == 0 )
{
continue; // degenerate edge, get more dist
}
else
{
good[ k ] = true;
VectorCopy( temp, around[ k ] );
Vector2Copy( ctrl[ y ][ x ].st, st[ k ] );
break; // good edge
}
}
}
VectorClear( sum );
VectorClear( sumTangents );
VectorClear( sumBinormals );
for ( k = 0; k < 8; k++ )
{
if ( !good[ k ] || !good[( k + 1 ) & 7 ] )
{
continue; // didn't get two points
}
CrossProduct( around[( k + 1 ) & 7 ], around[ k ], normal );
if ( VectorNormalize2( normal, normal ) == 0 )
{
continue;
}
R_CalcTangents( tangent, binormal,
vec3_origin, around[ k ], around[ ( k + 1 ) & 7 ],
dv->st, st[ k ], st[ ( k + 1 ) & 7 ] );
VectorAdd( normal, sum, sum );
VectorAdd( tangent, sumTangents, sumTangents );
VectorAdd( binormal, sumBinormals, sumBinormals );
count++;
}
if ( count == 0 )
{
VectorSet( dv->normal, 0.0f, 0.0f, 1.0f );
} else {
VectorNormalize2( sum, dv->normal );
}
R_TBNtoQtangents( sumTangents, sumBinormals, dv->normal,
dv->qtangent );
}
}
}