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FBX File import now re-orders vertices and batches all materials together to reduce draw calls

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--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%4020
This commit is contained in:
kearwood
2012-03-28 19:34:52 +00:00
parent 6edc77e32b
commit b7c8ae001b
1 changed files with 146 additions and 160 deletions
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306
KREngine/KREngine/Classes/KRResource+fbx.cpp
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@@ -279,7 +279,8 @@ void LoadMesh(std::vector<KRResource *> &resources, KFbxGeometryConverter *pGeom
int uv_count = pMesh->GetElementUVCount();
int normal_count = pMesh->GetElementNormalCount();
int tangent_count = pMesh->GetElementTangentCount();
int material_count = pMesh->GetElementMaterialCount();
int elementmaterial_count = pMesh->GetElementMaterialCount();
int material_count = pNode->GetMaterialCount();
printf(" Polygon Count: %i (before triangulation: %i)\n", polygon_count, pSourceMesh->GetPolygonCount());
@@ -293,185 +294,170 @@ void LoadMesh(std::vector<KRResource *> &resources, KFbxGeometryConverter *pGeom
std::vector<int> submesh_starts;
std::vector<std::string> material_names;
int source_vertex_id = 0;
int dest_vertex_id = 0;
KFbxGeometryElementMaterial* pMaterial = NULL;
int iMaterial = -1;
int mat_vertex_count = 0;
int mat_vertex_start = 0;
for(int iPolygon = 0; iPolygon < polygon_count; iPolygon++) {
int lPolygonSize = pMesh->GetPolygonSize(iPolygon);
if(lPolygonSize != 3) {
source_vertex_id += lPolygonSize;
printf(" Warning - Poly with %i vertices found. Expecting only triangles.", lPolygonSize);
} else {
// ----====---- Read SubMesh / Material Mapping ----====----
int iPrevMat = iMaterial;
KFbxGeometryElementMaterial *pPrevMat = pMaterial;
iMaterial = -1;
pMaterial = NULL;
for (int l = 0; l < material_count; l++)
{
KFbxGeometryElementMaterial* leMat = pMesh->GetElementMaterial(l);
if(leMat) {
if (leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX || leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX_TO_DIRECT) {
int new_id = leMat->GetIndexArray().GetAt(iPolygon);
if(new_id >= 0) {
iMaterial = new_id;
pMaterial = leMat;
for(int iMaterial=0; iMaterial < material_count; iMaterial++) {
int source_vertex_id = 0;
int mat_vertex_count = 0;
int mat_vertex_start = dest_vertex_id;
for(int iPolygon = 0; iPolygon < polygon_count; iPolygon++) {
int lPolygonSize = pMesh->GetPolygonSize(iPolygon);
if(lPolygonSize != 3) {
source_vertex_id += lPolygonSize;
printf(" Warning - Poly with %i vertices found. Expecting only triangles.", lPolygonSize);
} else {
// ----====---- Read SubMesh / Material Mapping ----====----
int iNewMaterial = -1;
for (int l = 0; l < elementmaterial_count; l++)
{
KFbxGeometryElementMaterial* leMat = pMesh->GetElementMaterial(l);
if(leMat) {
if (leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX || leMat->GetReferenceMode() == KFbxGeometryElement::eINDEX_TO_DIRECT) {
int new_id = leMat->GetIndexArray().GetAt(iPolygon);
if(new_id >= 0) {
iNewMaterial = new_id;
}
}
}
}
}
if(iMaterial != iPrevMat) {
if(pPrevMat && mat_vertex_count) {
submesh_starts.push_back(mat_vertex_start);
submesh_lengths.push_back(mat_vertex_count);
material_names.push_back(pNode->GetMaterial(iMaterial)->GetName());
printf(" Material \"%s\" from %i to %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
}
mat_vertex_count = 0;
mat_vertex_start = dest_vertex_id;
}
// ----====---- Read Vertex-level Attributes ----====----
for(int iVertex=0; iVertex<3; iVertex++) {
// ----====---- Read Vertex Position ----====----
int lControlPointIndex = pMesh->GetPolygonVertex(iPolygon, iVertex);
KFbxVector4 v = control_points[lControlPointIndex];
vertices.push_back(KRVector3(v[0], v[1], v[2]));
// ----====---- Read UVs ----====----
for (int l = 0; l < uv_count; ++l)
{
KFbxVector2 uv;
KFbxGeometryElementUV* leUV = pMesh->GetElementUV(l);
switch (leUV->GetMappingMode()) {
case KFbxGeometryElement::eBY_CONTROL_POINT:
switch (leUV->GetReferenceMode()) {
case KFbxGeometryElement::eDIRECT:
uv = leUV->GetDirectArray().GetAt(lControlPointIndex);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leUV->GetIndexArray().GetAt(lControlPointIndex);
uv = leUV->GetDirectArray().GetAt(id);
}
break;
default:
break; // other reference modes not shown here!
}
break;
case KFbxGeometryElement::eBY_POLYGON_VERTEX:
if(iMaterial == iNewMaterial) {
// ----====---- Read Vertex-level Attributes ----====----
for(int iVertex=0; iVertex<3; iVertex++) {
// ----====---- Read Vertex Position ----====----
int lControlPointIndex = pMesh->GetPolygonVertex(iPolygon, iVertex);
KFbxVector4 v = control_points[lControlPointIndex];
vertices.push_back(KRVector3(v[0], v[1], v[2]));
// ----====---- Read UVs ----====----
for (int l = 0; l < uv_count; ++l)
{
int lTextureUVIndex = pMesh->GetTextureUVIndex(iPolygon, iVertex);
switch (leUV->GetReferenceMode())
{
case KFbxGeometryElement::eDIRECT:
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
uv = leUV->GetDirectArray().GetAt(lTextureUVIndex);
KFbxVector2 uv;
KFbxGeometryElementUV* leUV = pMesh->GetElementUV(l);
switch (leUV->GetMappingMode()) {
case KFbxGeometryElement::eBY_CONTROL_POINT:
switch (leUV->GetReferenceMode()) {
case KFbxGeometryElement::eDIRECT:
uv = leUV->GetDirectArray().GetAt(lControlPointIndex);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leUV->GetIndexArray().GetAt(lControlPointIndex);
uv = leUV->GetDirectArray().GetAt(id);
}
break;
default:
break; // other reference modes not shown here!
}
break;
default:
break; // other reference modes not shown here!
case KFbxGeometryElement::eBY_POLYGON_VERTEX:
{
int lTextureUVIndex = pMesh->GetTextureUVIndex(iPolygon, iVertex);
switch (leUV->GetReferenceMode())
{
case KFbxGeometryElement::eDIRECT:
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
uv = leUV->GetDirectArray().GetAt(lTextureUVIndex);
}
break;
default:
break; // other reference modes not shown here!
}
}
break;
case KFbxGeometryElement::eBY_POLYGON: // doesn't make much sense for UVs
case KFbxGeometryElement::eALL_SAME: // doesn't make much sense for UVs
case KFbxGeometryElement::eNONE: // doesn't make much sense for UVs
break;
}
}
break;
case KFbxGeometryElement::eBY_POLYGON: // doesn't make much sense for UVs
case KFbxGeometryElement::eALL_SAME: // doesn't make much sense for UVs
case KFbxGeometryElement::eNONE: // doesn't make much sense for UVs
break;
}
if(l == 0) {
uva.push_back(KRVector2(uv[0], uv[1]));
} else if(l == 1) {
uvb.push_back(KRVector2(uv[0], uv[1]));
}
}
// ----====---- Read Normals ----====----
for(int l = 0; l < normal_count; ++l)
{
KFbxVector4 new_normal;
KFbxGeometryElementNormal* leNormal = pMesh->GetElementNormal(l);
if(leNormal->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
switch (leNormal->GetReferenceMode())
if(l == 0) {
uva.push_back(KRVector2(uv[0], uv[1]));
} else if(l == 1) {
uvb.push_back(KRVector2(uv[0], uv[1]));
}
}
// ----====---- Read Normals ----====----
for(int l = 0; l < normal_count; ++l)
{
case KFbxGeometryElement::eDIRECT:
new_normal = leNormal->GetDirectArray().GetAt(source_vertex_id);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leNormal->GetIndexArray().GetAt(source_vertex_id);
new_normal = leNormal->GetDirectArray().GetAt(id);
KFbxVector4 new_normal;
KFbxGeometryElementNormal* leNormal = pMesh->GetElementNormal(l);
if(leNormal->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
switch (leNormal->GetReferenceMode())
{
case KFbxGeometryElement::eDIRECT:
new_normal = leNormal->GetDirectArray().GetAt(source_vertex_id);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leNormal->GetIndexArray().GetAt(source_vertex_id);
new_normal = leNormal->GetDirectArray().GetAt(id);
}
break;
default:
break; // other reference modes not shown here!
}
}
break;
default:
break; // other reference modes not shown here!
}
}
if(l == 0) {
normals.push_back(KRVector3(new_normal[0], new_normal[1], new_normal[2]));
}
}
// ----====---- Read Tangents ----====----
for(int l = 0; l < tangent_count; ++l)
{
KFbxVector4 new_tangent;
KFbxGeometryElementTangent* leTangent = pMesh->GetElementTangent(l);
if(leTangent->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
switch (leTangent->GetReferenceMode()) {
case KFbxGeometryElement::eDIRECT:
new_tangent = leTangent->GetDirectArray().GetAt(source_vertex_id);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leTangent->GetIndexArray().GetAt(source_vertex_id);
new_tangent = leTangent->GetDirectArray().GetAt(id);
if(l == 0) {
normals.push_back(KRVector3(new_normal[0], new_normal[1], new_normal[2]));
}
break;
default:
break; // other reference modes not shown here!
}
}
if(l == 0) {
tangents.push_back(KRVector3(new_tangent[0], new_tangent[1], new_tangent[2]));
}
}
// ----====---- Read Tangents ----====----
for(int l = 0; l < tangent_count; ++l)
{
KFbxVector4 new_tangent;
KFbxGeometryElementTangent* leTangent = pMesh->GetElementTangent(l);
if(leTangent->GetMappingMode() == KFbxGeometryElement::eBY_POLYGON_VERTEX) {
switch (leTangent->GetReferenceMode()) {
case KFbxGeometryElement::eDIRECT:
new_tangent = leTangent->GetDirectArray().GetAt(source_vertex_id);
break;
case KFbxGeometryElement::eINDEX_TO_DIRECT:
{
int id = leTangent->GetIndexArray().GetAt(source_vertex_id);
new_tangent = leTangent->GetDirectArray().GetAt(id);
}
break;
default:
break; // other reference modes not shown here!
}
}
if(l == 0) {
tangents.push_back(KRVector3(new_tangent[0], new_tangent[1], new_tangent[2]));
}
}
source_vertex_id++;
dest_vertex_id++;
mat_vertex_count++;
source_vertex_id++;
dest_vertex_id++;
mat_vertex_count++;
}
}
}
}
// ----====---- Output last material / submesh details ----====----
if(mat_vertex_count) {
submesh_starts.push_back(mat_vertex_start);
submesh_lengths.push_back(mat_vertex_count);
material_names.push_back(pNode->GetMaterial(iMaterial)->GetName());
printf(" %s: %i - %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
}
}
// ----====---- Complete last material / submesh ----====----
if(iMaterial >= 0 && mat_vertex_count) {
submesh_starts.push_back(mat_vertex_start);
submesh_lengths.push_back(mat_vertex_count);
material_names.push_back(pNode->GetMaterial(iMaterial)->GetName());
printf(" Material \"%s\" from %i to %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
}
// ----====---- Generate Output Mesh Object ----====----