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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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48
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());
@@ -293,14 +294,12 @@ 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 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) {
@@ -308,38 +307,21 @@ void LoadMesh(std::vector<KRResource *> &resources, KFbxGeometryConverter *pGeom
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++)
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) {
iMaterial = new_id;
pMaterial = leMat;
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;
}
if(iMaterial == iNewMaterial) {
// ----====---- Read Vertex-level Attributes ----====----
for(int iVertex=0; iVertex<3; iVertex++) {
// ----====---- Read Vertex Position ----====----
@@ -464,14 +446,18 @@ void LoadMesh(std::vector<KRResource *> &resources, KFbxGeometryConverter *pGeom
}
}
}
}
// ----====---- Complete last material / submesh ----====----
if(iMaterial >= 0 && 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(" Material \"%s\" from %i to %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
printf(" %s: %i - %i\n", pNode->GetMaterial(iMaterial)->GetName(), mat_vertex_start, mat_vertex_count + mat_vertex_start - 1);
}
}
// ----====---- Generate Output Mesh Object ----====----