void Renderer::Cull( XNA::Frustum* frustum, Transform* pTransform )
{
if (m_Mesh)
{
XNA::OrientedBox objectBox;
for( int i=0; i<m_Mesh->GetNumberOfSubmeshes(); i++ )
{
Submesh* submesh = m_Mesh->GetSubmesh( i );
XMVECTOR extents = XMLoadFloat3( &submesh->GetGeometryChunk()->GetAABB()->Extents );
XMVECTOR scale = XMLoadFloat3( &pTransform->GetScale().intoXMFLOAT3() );
XMVECTOR offset = XMLoadFloat3( &submesh->GetGeometryChunk()->GetAABB()->Center )*scale;
XMVECTOR position = XMVector3Rotate( offset, XMLoadFloat4(&pTransform->GetOrientation().intoXMFLOAT4()) );
position += XMLoadFloat3( &pTransform->GetPosition().intoXMFLOAT3() );
XMStoreFloat3( &objectBox.Center, position );
XMStoreFloat3( &objectBox.Extents, extents*scale );
objectBox.Orientation = pTransform->GetOrientation().intoXMFLOAT4();
if( XNA::IntersectOrientedBoxFrustum( &objectBox, frustum ) > 0 )
m_SubmeshRenderData[i].bVisible = true;
else
m_SubmeshRenderData[i].bVisible = false;
}
}
}
void Renderer::CullLight( SpotLight* light, Transform* pTransform )
{
if (m_Mesh)
{
XNA::OrientedBox objectBox;
XNA::Frustum lightFrustum = light->GetFrustum();
for( int i=0; i<m_Mesh->GetNumberOfSubmeshes(); i++ )
{
if (m_SubmeshRenderData[i].bVisible)
{
Submesh* submesh = m_Mesh->GetSubmesh( i );
XMVECTOR extents = XMLoadFloat3( &submesh->GetGeometryChunk()->GetAABB()->Extents );
XMVECTOR scale = XMLoadFloat3( &pTransform->GetScale().intoXMFLOAT3() );
XMVECTOR offset = XMLoadFloat3( &submesh->GetGeometryChunk()->GetAABB()->Center )*scale;
XMVECTOR position = XMVector3Rotate( offset, XMLoadFloat4(&pTransform->GetOrientation().intoXMFLOAT4()) );
position += XMLoadFloat3( &pTransform->GetPosition().intoXMFLOAT3() );
XMStoreFloat3( &objectBox.Center, position );
XMStoreFloat3( &objectBox.Extents, extents*scale );
objectBox.Orientation = pTransform->GetOrientation().intoXMFLOAT4();
if( XNA::IntersectOrientedBoxFrustum( &objectBox, &lightFrustum ) > 0 )
m_SubmeshRenderData[i].AffectingSpotLights.push_back( light );
}
}
}
}
Submesh*
CmodLoader::loadSubmesh()
{
VertexSpec* vertexSpec = loadVertexSpec();
if (!vertexSpec)
{
return NULL;
}
VertexArray* vertexArray = loadVertexArray(*vertexSpec);
if (!vertexArray)
{
delete vertexSpec;
return NULL;
}
Submesh* submesh = new Submesh(vertexArray);
bool done = false;
while (!done && !error())
{
quint16 token = 0;
*m_inputStream >> token;
if (token == CmodEndMesh)
{
done = true;
}
else
{
unsigned int materialIndex = 0;
PrimitiveBatch* primitives = loadPrimitiveBatch(token, vertexArray->count(), &materialIndex);
if (primitives)
{
submesh->addPrimitiveBatch(primitives, materialIndex);
}
}
}
if (error())
{
delete submesh;
submesh = NULL;
}
return submesh;
}
bool BinaryWriter< Submesh >::doWrite( Submesh const & obj )
{
bool result = true;
if ( result )
{
VertexBuffer const & buffer = obj.getVertexBuffer();
size_t size = buffer.getSize();
uint32_t stride = buffer.getDeclaration().stride();
auto count = uint32_t( size / stride );
result = doWriteChunk( count, ChunkType::eSubmeshVertexCount, m_chunk );
if ( result )
{
auto const * srcbuf = reinterpret_cast< InterleavedVertex const * >( buffer.getData() );
std::vector< InterleavedVertexT< double > > dstbuf( count );
doCopyVertices( count, srcbuf, dstbuf.data() );
result = doWriteChunk( dstbuf, ChunkType::eSubmeshVertex, m_chunk );
}
}
if ( result )
{
IndexBuffer const & buffer = obj.getIndexBuffer();
uint32_t count = buffer.getSize() / 3;
result = doWriteChunk( count, ChunkType::eSubmeshFaceCount, m_chunk );
if ( result )
{
auto const * srcbuf = reinterpret_cast< FaceIndices const * >( buffer.getData() );
result = doWriteChunk( srcbuf, buffer.getSize() / 3, ChunkType::eSubmeshFaces, m_chunk );
}
}
if ( result )
{
auto it = obj.m_components.find( BonesComponent::Name );
if ( it != obj.m_components.end() )
{
BinaryWriter< BonesComponent >{}.write( *std::static_pointer_cast< BonesComponent >( it->second ), m_chunk );
}
}
return result;
}
// Create buffers required for drawing the mesh on hardware. This must be called
// before rendering whenever the mesh has changed.
//
// return true if all hardware buffers could be created.
bool
MeshGeometry::realize() const
{
// Mark hardware buffers as up-to-date. Even if vertex buffer allocation fails,
// we don't want to keep retrying every time a frame is rendered.
m_hwBuffersCurrent = true;
// Only create vertex buffers for submeshes for which the size of the vertex
// data exceeds the limit below.
const unsigned int VertexBufferSizeThreshold = 4096;
// Don't create anything if hardware/driver doesn't support vertex buffer objects,
// but report success anyhow.
if (!GLVertexBuffer::supported())
{
return true;
}
bool ok = true;
freeSubmeshBuffers();
for (vector< counted_ptr<Submesh> >::const_iterator iter = m_submeshes.begin();
iter != m_submeshes.end(); ++iter)
{
Submesh* submesh = iter->ptr();
GLVertexBuffer* vertexBuffer = NULL;
unsigned int size = submesh->vertices()->stride() * submesh->vertices()->count();
if (size > VertexBufferSizeThreshold)
{
vertexBuffer = new GLVertexBuffer(size, GL_STATIC_DRAW_ARB, submesh->vertices()->data());
if (!vertexBuffer->isValid())
{
delete vertexBuffer;
ok = false;
}
}
// A null vertex pointer is legal and indicates that the vertex data is
// stored in system memory instead of graphics memory.
m_submeshBuffers.push_back(vertexBuffer);
}
return ok;
}
void Geometry::setMaterial( Submesh & submesh
, MaterialSPtr material
, bool updateSubmesh )
{
MeshSPtr mesh = getMesh();
if ( mesh )
{
auto it = std::find_if( mesh->begin()
, mesh->end()
, [&submesh]( SubmeshSPtr lookup )
{
return lookup.get() == &submesh;
} );
REQUIRE( it != mesh->end() );
bool changed = false;
MaterialSPtr oldMaterial;
auto itSubMat = m_submeshesMaterials.find( &submesh );
if ( itSubMat != m_submeshesMaterials.end() )
{
MaterialSPtr oldMaterial = itSubMat->second.lock();
if ( oldMaterial != material )
{
itSubMat->second = material;
changed = true;
}
}
else if ( material )
{
m_submeshesMaterials.emplace( &submesh, material );
changed = true;
}
if ( changed )
{
submesh.setMaterial( oldMaterial, material, updateSubmesh );
if ( material->hasEnvironmentMapping() )
{
getScene()->createEnvironmentMap( *getParent() );
}
}
}
else
{
CASTOR_EXCEPTION( "No mesh" );
}
}
RenderingMesh* COLRenderWidget::createRenderingMesh(Mesh* mesh)
{
Matrix4 fModelMat = Matrix4::Identity;
MeshFrame* frame = mesh->getFrame();
if (frame) {
fModelMat = fModelMat * frame->getAbsoluteModelMatrix();
}
RenderingPrimitiveFormat rpf;
switch (mesh->getVertexFormat()) {
case VertexFormatPoints:
rpf = RenderingPrimitivePoints;
break;
case VertexFormatLines:
rpf = RenderingPrimitiveLines;
break;
case VertexFormatTriangles:
rpf = RenderingPrimitiveTriangles;
break;
case VertexFormatTriangleStrips:
rpf = RenderingPrimitiveTriangleStrip;
break;
}
//uint32_t flags = RenderingMesh::EnableShaderPluginUniformBuffers | RenderingMesh::HasTransparency;
uint32_t flags = RenderingMesh::EnableShaderPluginUniformBuffers;
DefaultRenderingMesh* rm = new DefaultRenderingMesh (
rpf,
flags,
mesh->getVertexCount(), 0, NULL, 0,
mesh->getDataBuffer(), mesh->getIndexBuffer(),
mesh->getVertexOffset(), mesh->getVertexStride(),
mesh->getSubmeshIDOffset(), mesh->getSubmeshIDStride(),
mesh->getNormalOffset(), mesh->getNormalStride(),
mesh->getTexCoordOffset(), mesh->getTexCoordStride(),
mesh->getVertexColorOffset(), mesh->getVertexColorStride(),
-1, 0,
-1, 0
);
rm->setModelMatrix(fModelMat);
for (Mesh::SubmeshIterator sit = mesh->getSubmeshBegin() ; sit != mesh->getSubmeshEnd() ; sit++) {
Submesh* submesh = *sit;
Material* mat = submesh->getMaterial();
GLuint oglTex = 0;
uint8_t r = 255;
uint8_t g = 255;
uint8_t b = 255;
uint8_t a = 255;
if (mat) {
mat->getColor(r, g, b, a);
}
RenderingSubmesh* sm = new RenderingSubmesh(rm, submesh->getIndexCount(), submesh->getIndexOffset(), oglTex);
sm->setMaterialColor(r, g, b, a);
}
return rm;
}
/** Merge a list of submeshes to create a single submesh. All submeshes must share
* the same vertex spec. There must be at least one submesh in the list to merge.
*
* \return the new submesh, or null if there was an error creating the submesh.
*/
Submesh*
Submesh::mergeSubmeshes(const std::vector<Submesh*>& submeshes)
{
if (submeshes.empty())
{
return NULL;
}
const VertexSpec& vertexSpec = submeshes.front()->vertices()->vertexSpec();
const unsigned int vertexStride = submeshes.front()->vertices()->stride();
// Verify that the strides and vertex specs of all submeshes match
unsigned int vertexCount = 0;
for (vector<Submesh*>::const_iterator iter = submeshes.begin(); iter != submeshes.end(); ++iter)
{
Submesh* s = *iter;
if (s->vertices()->vertexSpec() != vertexSpec || s->vertices()->stride() != vertexStride)
{
VESTA_WARNING("MergeSubmeshes attempted on incompatible submeshes.");
return false;
}
vertexCount += s->vertices()->count();
}
// Create a new vertex array large enough to contain all of the submeshes
unsigned int vertexDataSize = vertexCount * vertexStride;
Submesh* submesh = NULL;
char* vertexData = NULL;
VertexArray* vertexArray = NULL;
try
{
vertexData = new char[vertexDataSize];
vertexArray = new VertexArray(vertexData, vertexCount, vertexSpec, vertexStride);
submesh = new Submesh(vertexArray);
}
catch (bad_alloc&)
{
VESTA_WARNING("Out of memory during submesh merge.");
if (vertexArray)
{
// Deleting the vertex array takes care of the vertexData too
delete vertexArray;
}
else if (vertexData)
{
delete[] vertexData;
}
return NULL;
}
unsigned int vertexDataOffset = 0;
// Copy vertices from the submeshes in the merge list to the new vertex array
for (vector<Submesh*>::const_iterator iter = submeshes.begin(); iter != submeshes.end(); ++iter)
{
Submesh* s = *iter;
unsigned int submeshVertexDataSize = vertexStride * s->vertices()->count();
assert(vertexDataOffset + submeshVertexDataSize <= vertexDataSize);
copy(reinterpret_cast<const char*>(s->vertices()->data()),
reinterpret_cast<const char*>(s->vertices()->data()) + submeshVertexDataSize,
vertexData + vertexDataOffset);
vertexDataOffset += submeshVertexDataSize;
}
// Copy materials and primitive batches from submeshes in the merge list
try
{
unsigned int vertexOffset = 0;
for (vector<Submesh*>::const_iterator iter = submeshes.begin(); iter != submeshes.end() && submesh != NULL; ++iter)
{
Submesh* s = *iter;
assert(s->materials().size() == s->primitiveBatches().size());
for (unsigned int i = 0; i < s->primitiveBatchCount(); ++i)
{
const PrimitiveBatch* prims = s->primitiveBatches().at(i);
PrimitiveBatch* newPrims = new PrimitiveBatch(*prims);
if (vertexOffset != 0)
{
if (!newPrims->offsetIndices(vertexOffset))
{
delete submesh;
submesh = NULL;
break;
}
}
submesh->addPrimitiveBatch(newPrims, s->materials().at(i));
}
vertexOffset += s->vertices()->count();
}
}
catch (bad_alloc&)
{
VESTA_WARNING("Out of memory during submesh merge.");
delete submesh;
submesh = NULL;
}
return submesh;
}
void Mesh::link()
{
if (isLinked)
return;
// Build the data buffer
size_t numSubmeshes = submeshes.size();
glBindBuffer(GL_ARRAY_BUFFER, dataBuffer);
char* bufData = (char*) glMapBuffer(GL_ARRAY_BUFFER, GL_READ_ONLY);
char* newData = new char[dataBufferSingleSize * numSubmeshes];
for (uint8_t i = 0 ; i < numSubmeshes ; i++) {
memcpy(newData + i*dataBufferSingleSize, bufData, dataBufferSingleSize);
if (submeshIDOffs != -1) {
for (size_t j = 0 ; j < vertexCount ; j++) {
newData[i*dataBufferSingleSize + submeshIDOffs + j*submeshIDStride] = i;
}
}
}
glUnmapBuffer(GL_ARRAY_BUFFER);
glBufferData(GL_ARRAY_BUFFER, dataBufferSingleSize * numSubmeshes, newData, GL_STATIC_DRAW);
delete[] newData;
// Build the index buffer
if (indexBuffer == 0)
glGenBuffers(1, &indexBuffer);
bool hasCompiledSubmeshes = false;
//GLuint bufSize = 0;
size_t numIndices = 0;
for (SubmeshIterator it = submeshes.begin() ; it != submeshes.end() ; it++) {
Submesh* submesh = *it;
if (submesh->isLinked())
hasCompiledSubmeshes = true;
numIndices += submesh->getIndexCount();
}
uint32_t* newIndices = new uint32_t[numIndices];
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBuffer);
uint32_t* oldIndices;
if (hasCompiledSubmeshes)
oldIndices = (uint32_t*) glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_READ_ONLY);
size_t offset = 0;
for (SubmeshIterator it = submeshes.begin() ; it != submeshes.end() ; it++) {
Submesh* submesh = *it;
int ic = submesh->getIndexCount();
if (submesh->isLinked()) {
memcpy(newIndices + offset, oldIndices + submesh->getIndexOffset(), ic*4);
} else {
memcpy(newIndices + offset, submesh->indices, ic*4);
}
submesh->setLinked(offset);
offset += ic;
}
if (hasCompiledSubmeshes)
glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, numIndices*4, newIndices, GL_STATIC_DRAW);
delete[] newIndices;
isLinked = true;
}
/**
*\~english
*\return The submesh buffer matching given submesh.
*\~french
*\return Le tampon de sous-maillage correspondant au sous-maillage donné.
*/
inline SubmeshAnimationBufferMap::const_iterator find( Submesh const & submesh )const
{
return m_submeshesBuffers.find( submesh.getId() );
}
bool BinaryParser< Submesh >::doParse( Submesh & obj )
{
bool result = true;
String name;
std::vector< FaceIndices > faces;
std::vector< VertexBoneData > bones;
std::vector< InterleavedVertexT< double > > srcbuf;
uint32_t count{ 0u };
uint32_t faceCount{ 0u };
uint32_t boneCount{ 0u };
BinaryChunk chunk;
std::shared_ptr< BonesComponent > bonesComponent;
while ( result && doGetSubChunk( chunk ) )
{
switch ( chunk.getChunkType() )
{
case ChunkType::eSubmeshVertexCount:
result = doParseChunk( count, chunk );
if ( result )
{
srcbuf.resize( count );
}
break;
case ChunkType::eSubmeshVertex:
result = doParseChunk( srcbuf, chunk );
if ( result && !srcbuf.empty() )
{
std::vector< InterleavedVertex > dstbuf( srcbuf.size() );
doCopyVertices( uint32_t( srcbuf.size() ), srcbuf.data(), dstbuf.data() );
obj.addPoints( dstbuf );
}
break;
case ChunkType::eSubmeshBoneCount:
if ( !bonesComponent )
{
bonesComponent = std::make_shared< BonesComponent >( obj );
obj.addComponent( bonesComponent );
}
result = doParseChunk( count, chunk );
if ( result )
{
boneCount = count;
bones.resize( count );
}
break;
case ChunkType::eSubmeshBones:
result = doParseChunk( bones, chunk );
if ( result && boneCount > 0 )
{
bonesComponent->addBoneDatas( bones );
}
boneCount = 0u;
break;
case ChunkType::eBonesComponent:
bonesComponent = std::make_shared< BonesComponent >( obj );
result = BinaryParser< BonesComponent >{}.parse( *bonesComponent, chunk );
if ( result )
{
obj.addComponent( bonesComponent );
}
break;
case ChunkType::eSubmeshFaceCount:
result = doParseChunk( count, chunk );
if ( result )
{
faceCount = count;
faces.resize( count );
}
break;
case ChunkType::eSubmeshFaces:
result = doParseChunk( faces, chunk );
if ( result && faceCount > 0 )
{
auto indexMapping = std::make_shared< TriFaceMapping >( obj );
indexMapping->addFaceGroup( faces );
obj.setIndexMapping( indexMapping );
}
faceCount = 0u;
break;
default:
result = false;
break;
}
}
return result;
}
static MeshGeometry*
Convert3DSMesh(Lib3dsFile* meshfile, TextureMapLoader* textureLoader)
{
MeshGeometry* meshGeometry = new MeshGeometry();
for (int materialIndex = 0; materialIndex < meshfile->nmaterials; ++materialIndex)
{
Lib3dsMaterial* material = meshfile->materials[materialIndex];
Material* vmaterial = new Material();
// Convert a 3ds material to VESTA material
vmaterial->setOpacity(1.0f - material->transparency);
vmaterial->setDiffuse(Spectrum(material->diffuse));
if (material->shininess != 0.0f)
{
vmaterial->setSpecular(Spectrum(material->specular));
vmaterial->setPhongExponent(std::pow(2.0f, 1.0f + 10.0f * material->shininess));
}
if (material->self_illum_flag)
{
vmaterial->setEmission(vmaterial->diffuse() * material->self_illum);
}
const string baseTextureName(material->texture1_map.name);
if (!baseTextureName.empty())
{
TextureProperties texProperties;
if ((material->texture1_map.flags & LIB3DS_TEXTURE_NO_TILE) != 0)
{
texProperties.addressS = TextureProperties::Clamp;
texProperties.addressT = TextureProperties::Clamp;
}
if (textureLoader)
{
TextureMap* baseTexture = textureLoader->loadTexture(baseTextureName, texProperties);
vmaterial->setBaseTexture(baseTexture);
}
}
meshGeometry->addMaterial(vmaterial);
}
for (int meshIndex = 0; meshIndex < meshfile->nmeshes; ++meshIndex)
{
Lib3dsMesh* mesh = meshfile->meshes[meshIndex];
if (mesh->nfaces > 0)
{
bool hasTextureCoords = mesh->texcos != 0;
// Generate normals for the mesh
float* normals = new float[mesh->nfaces * 9];
lib3ds_mesh_calculate_vertex_normals(mesh, (float(*)[3]) normals);
VertexPool vertexPool;
for (int faceIndex = 0; faceIndex < mesh->nfaces; ++faceIndex)
{
for (int i = 0; i < 3; i++)
{
int vertexIndex = mesh->faces[faceIndex].index[i];
vertexPool.addVec3(mesh->vertices[vertexIndex]);
vertexPool.addVec3(&normals[(faceIndex * 3 + i) * 3]);
if (hasTextureCoords)
{
// Invert the v texture coordinate, since 3ds uses a texture
// coordinate system that is flipped with respect to OpenGL's
vertexPool.addVec2(mesh->texcos[vertexIndex][0], 1.0f - mesh->texcos[vertexIndex][1]);
}
}
}
delete[] normals;
const VertexSpec* vertexSpec = hasTextureCoords ? &VertexSpec::PositionNormalTex : &VertexSpec::PositionNormal;
VertexArray* vertexArray = vertexPool.createVertexArray(mesh->nfaces * 3, *vertexSpec);
PrimitiveBatch* batch = new PrimitiveBatch(PrimitiveBatch::Triangles, mesh->nfaces);
// Get the material for the primitive batch
// TODO: This assumes that a single material is applied to the whole mesh; however,
// materials can be assigned per-face (but rarely are in most 3ds files.)
unsigned int materialIndex = Submesh::DefaultMaterialIndex;
if (mesh->nfaces > 0)
{
// Use the material of the first face
materialIndex = mesh->faces[0].material;
}
Submesh* submesh = new Submesh(vertexArray);
submesh->addPrimitiveBatch(batch, materialIndex);
meshGeometry->addSubmesh(submesh);
}
}
return meshGeometry;
}
/** Optimize the mesh by merging submeshes that share the same vertex spec.
* This reduces the number of separate vertex buffers required.
*/
bool
MeshGeometry::mergeSubmeshes()
{
if (m_submeshes.size() <= 1)
{
return true;
}
// At the beginning, all submeshes are unmerged, none are merged
vector<counted_ptr<Submesh> > merged;
vector<Submesh*> unmerged;
for (vector<counted_ptr<Submesh> >::const_iterator iter = m_submeshes.begin(); iter != m_submeshes.end(); ++iter)
{
unmerged.push_back(iter->ptr());
}
// Iterate over submeshes repeatedly, removing groups that are merged.
while (!unmerged.empty())
{
const VertexArray* vertexArray = unmerged.front()->vertices();
vector<Submesh*> matches;
vector<Submesh*> nonmatches;
for (vector<Submesh*>::const_iterator iter = unmerged.begin(); iter != unmerged.end(); ++iter)
{
Submesh* s = *iter;
if (vertexArray->stride() == s->vertices()->stride() &&
vertexArray->vertexSpec() == s->vertices()->vertexSpec())
{
matches.push_back(s);
}
else
{
nonmatches.push_back(s);
}
}
if (matches.size() == 1)
{
// Avoid the expense of merging when there's just a single
// mesh.
merged.push_back(counted_ptr<Submesh>(matches.front()));
}
else
{
Submesh* mergedSubmesh = Submesh::mergeSubmeshes(matches);
if (!mergedSubmesh)
{
return false;
}
merged.push_back(counted_ptr<Submesh>(mergedSubmesh));
}
// Set submeshes to the list of unmerged submeshes
unmerged = nonmatches;
}
VESTA_LOG("Merged %d submeshes into %d", m_submeshes.size(), merged.size());
m_submeshes = merged;
setMeshChanged();
return true;
}
