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Fixed bug in FBX import toolchain that caused incorrect transparency values to be set on materials.

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Optimization for packing of index data into VBO's in progress.
This commit is contained in:
Kearwood Gilbert
2013-05-06 19:33:51 -07:00
parent 9e605863ea
commit e42eeb5392
6 changed files with 50 additions and 21 deletions
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2
KREngine/kraken/KRContext.cpp
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@@ -204,7 +204,7 @@ void KRContext::loadResource(const std::string &file_name, KRDataBlock *data) {
m_pSoundManager->load(name.c_str(), extension, data);
} else if(extension.compare("obj") == 0) {
KRResource::LoadObj(*this, file_name);
#if TARGET_OS_MAC
#if !TARGET_OS_IPHONE
} else if(extension.compare("fbx") == 0) {
KRResource::LoadFbx(*this, file_name);
} else if(extension.compare("blend") == 0) {

2
KREngine/kraken/KRDataBlock.cpp
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@@ -79,7 +79,7 @@ bool KRDataBlock::load(const std::string &path)
m_fdPackFile = open(path.c_str(), O_RDONLY);
if(m_fdPackFile >= 0) {
if(fstat(m_fdPackFile, &statbuf) >= 0) {
if ((m_data = mmap (0, statbuf.st_size, PROT_READ, MAP_SHARED, m_fdPackFile, 0)) == (caddr_t) -1) {
if ((m_data = mmap(0, statbuf.st_size, PROT_READ, MAP_SHARED, m_fdPackFile, 0)) == (caddr_t) -1) {
} else {
m_data_size = statbuf.st_size;
success = true;

39
KREngine/kraken/KRMesh.cpp
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@@ -264,17 +264,19 @@ void KRMesh::renderSubmesh(int iSubmesh, KRNode::RenderPass renderPass, const st
__uint16_t *index_data = getIndexData();
int submesh_index_group = 0;
int index_group = getSubmesh(iSubmesh)->index_group;
int index_group_offset = getSubmesh(iSubmesh)->index_group_offset;
while(cVertexes > 0) {
int start_index_offset, start_vertex_offset, index_count, vertex_count;
getIndexedRange(iSubmesh, submesh_index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
getIndexedRange(index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
m_pContext->getModelManager()->bindVBO((unsigned char *)pVertexData + start_vertex_offset * m_vertex_size, m_vertex_size * vertex_count, index_data + start_index_offset, index_count * 4, has_vertex_attribute(KRENGINE_ATTRIB_VERTEX), has_vertex_attribute(KRENGINE_ATTRIB_NORMAL), has_vertex_attribute(KRENGINE_ATTRIB_TANGENT), has_vertex_attribute(KRENGINE_ATTRIB_TEXUVA), has_vertex_attribute(KRENGINE_ATTRIB_TEXUVB), has_vertex_attribute(KRENGINE_ATTRIB_BONEINDEXES), has_vertex_attribute(KRENGINE_ATTRIB_BONEWEIGHTS), true);
glDrawElements(GL_TRIANGLES, index_count, GL_UNSIGNED_SHORT, 0);
glDrawElements(GL_TRIANGLES, index_count - index_group_offset, GL_UNSIGNED_SHORT, (void *)(index_group_offset * m_vertex_size));
m_pContext->getModelManager()->log_draw_call(renderPass, object_name, material_name, index_count);
cVertexes -= index_count;
cVertexes -= index_count - index_group_offset;
index_group_offset = 0;
}
} else {
@@ -927,6 +929,7 @@ void KRMesh::convertToIndexed()
// Convert model to indexed vertices, identying vertexes with identical attributes and optimizing order of trianges for best usage post-vertex-transform cache on GPU
std::vector<__uint16_t> vertex_indexes;
std::vector<std::pair<int, int> > vertex_index_bases;
int vertex_index_offset = 0;
std::vector<KRVector3> vertices;
std::vector<KRVector2> uva;
@@ -949,13 +952,14 @@ void KRMesh::convertToIndexed()
material_names.push_back(getSubmesh(submesh_index)->szName);
int vertexes_remaining = getVertexCount(submesh_index);
submesh_starts.push_back(vertex_index_bases.size());
submesh_starts.push_back(vertex_index_bases.size() + (vertex_index_offset << 16));
submesh_lengths.push_back(vertexes_remaining);
int source_index = getSubmesh(submesh_index)->start_vertex;
while(vertexes_remaining) {
vertex_index_bases.push_back(std::pair<int, int>(vertex_indexes.size(), vertices.size()));
vertex_index_offset = 0;
int vertex_count = vertexes_remaining;
@@ -1084,9 +1088,8 @@ void KRMesh::optimize()
}
}
void KRMesh::getIndexedRange(int submesh, int submesh_index_group, int &start_index_offset, int &start_vertex_offset, int &index_count, int &vertex_count) const {
void KRMesh::getIndexedRange(int index_group, int &start_index_offset, int &start_vertex_offset, int &index_count, int &vertex_count) const {
pack_header *h = getHeader();
int index_group = getSubmesh(submesh)->start_vertex + submesh_index_group;
__uint32_t *index_base_data = getIndexBaseData();
start_index_offset = index_base_data[index_group * 2];
start_vertex_offset = index_base_data[index_group * 2 + 1];
@@ -1104,13 +1107,14 @@ int KRMesh::getTriangleVertexIndex(int submesh, int index) const
switch(getModelFormat()) {
case KRENGINE_MODEL_FORMAT_INDEXED_TRIANGLES:
{
int remaining_vertices = index;
int submesh_index_group = 0;
int start_index_offset, start_vertex_offset, index_count, vertex_count;
getIndexedRange(submesh, submesh_index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
int index_group = getSubmesh(submesh)->index_group;
int index_group_offset = getSubmesh(submesh)->index_group_offset;
int remaining_vertices = index_group_offset + index;
getIndexedRange(index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
while(remaining_vertices >= index_count) {
remaining_vertices -= index_count;
getIndexedRange(submesh, submesh_index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
getIndexedRange(index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
}
return getIndexData()[start_index_offset + remaining_vertices] + start_vertex_offset;
}
@@ -1139,13 +1143,18 @@ void KRMesh::optimizeIndexes()
for(int submesh_index=0; submesh_index < header->submesh_count; submesh_index++) {
pack_material *submesh = getSubmesh(submesh_index);
int vertexes_remaining = submesh->vertex_count;
int submesh_index_group = 0;
int index_group = getSubmesh(submesh_index)->index_group;
int index_group_offset = getSubmesh(submesh_index)->index_group_offset;
while(vertexes_remaining > 0) {
int start_index_offset, start_vertex_offset, index_count, vertex_count;
getIndexedRange(submesh_index, submesh_index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
getIndexedRange(index_group++, start_index_offset, start_vertex_offset, index_count, vertex_count);
__uint16_t *index_data_start = index_data + start_index_offset;
unsigned char * vertex_data_start = vertex_data + start_vertex_offset * m_vertex_size;
start_index_offset += index_group_offset;
index_count -= index_group_offset;
index_group_offset = 0;
__uint16_t *index_data_start = index_data + start_index_offset + index_group_offset;
unsigned char * vertex_data_start = vertex_data + start_vertex_offset;
// ----====---- Step 1: Optimize triangle drawing order to maximize use of the GPU's post-transform vertex cache ----====----
Forsyth::OptimizeFaces(index_data_start, index_count, vertex_count, new_indices, 16); // FINDME, TODO - GPU post-transform vertex cache size of 16 should be configureable

10
KREngine/kraken/KRMesh.h
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@@ -133,7 +133,13 @@ public:
} VertexData;
typedef struct {
int32_t start_vertex;
union {
struct { // For Indexed triangles / strips
int16_t index_group;
int16_t index_group_offset;
};
int32_t start_vertex; // For non-indexed trigangles / strips
};
int32_t vertex_count;
char szName[KRENGINE_MAX_NAME_LENGTH];
} pack_material;
@@ -235,7 +241,7 @@ private:
pack_bone *getBone(int index);
void getIndexedRange(int submesh, int submesh_index_group, int &start_index_offset, int &start_vertex_offset, int &index_count, int &vertex_count) const;
void getIndexedRange(int index_group, int &start_index_offset, int &start_vertex_offset, int &index_count, int &vertex_count) const;
};

16
KREngine/kraken/KRResource+fbx.cpp
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@@ -876,17 +876,25 @@ void LoadMaterial(KRContext &context, FbxSurfaceMaterial *pMaterial) {
// Emissive Color
//lKFbxDouble3 =((KFbxSurfacePhong *) pMaterial)->Emissive;
/*
// Transparency
lKFbxDouble1 =((KFbxSurfacePhong *) pMaterial)->TransparencyFactor;
new_material->setTransparency(1.0f - lKFbxDouble1.Get());
*/
// Shininess
lKFbxDouble1 =((KFbxSurfacePhong *) pMaterial)->Shininess;
new_material->setShininess(lKFbxDouble1.Get());
/*
// Specular Factor
lKFbxDouble1 =((KFbxSurfacePhong *) pMaterial)->SpecularFactor;
double specular_factor = lKFbxDouble1.Get();
*/
// Transparency Color
lKFbxDouble3 =((KFbxSurfacePhong *) pMaterial)->TransparentColor;
new_material->setTransparency( 1.0f - (lKFbxDouble3.Get()[0] + lKFbxDouble3.Get()[1] + lKFbxDouble3.Get()[2]) / 3.0f);
// Reflection factor
lKFbxDouble1 =((KFbxSurfacePhong *) pMaterial)->ReflectionFactor;
@@ -910,10 +918,16 @@ void LoadMaterial(KRContext &context, FbxSurfaceMaterial *pMaterial) {
// Emissive
//lKFbxDouble3 =((KFbxSurfaceLambert *)pMaterial)->Emissive;
/*
// Opacity
lKFbxDouble1 =((KFbxSurfaceLambert *)pMaterial)->TransparencyFactor;
new_material->setTransparency(1.0f - lKFbxDouble1.Get());
*/
// Transparency Color
lKFbxDouble3 =((KFbxSurfaceLambert *) pMaterial)->TransparentColor;
new_material->setTransparency(1.0f - (lKFbxDouble3.Get()[0] + lKFbxDouble3.Get()[1] + lKFbxDouble3.Get()[2]) / 3.0f);
} else {
printf("Error! Unable to convert material: %s", pMaterial->GetName());
}

2
KREngine/kraken/KRResource.h
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@@ -29,7 +29,7 @@ public:
static std::vector<KRResource *> LoadObj(KRContext &context, const std::string& path);
#if TARGET_OS_MAC
#if !TARGET_OS_IPHONE
static void LoadFbx(KRContext &context, const std::string& path);
static std::vector<KRResource *> LoadBlenderScene(KRContext &context, const std::string& path);
#endif