// extract the GLOD data into vertex buffers
void create_vertex_buffers_from_glod_object(S32 object, S32 group, std::vector<LLPointer <LLVertexBuffer> >& vertex_buffers)
{
vertex_buffers.clear();
GLint patch_count = 0;
glodGetObjectParameteriv(object, GLOD_NUM_PATCHES, &patch_count);
stop_gloderror();
GLint* sizes = new GLint[patch_count*2];
glodGetObjectParameteriv(object, GLOD_PATCH_SIZES, sizes);
stop_gloderror();
GLint* names = new GLint[patch_count];
glodGetObjectParameteriv(object, GLOD_PATCH_NAMES, names);
stop_gloderror();
for (S32 i = 0; i < patch_count; i++)
{
LLPointer<LLVertexBuffer> buff =
new LLVertexBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0, 0);
if (sizes[i*2+1] > 0 && sizes[i*2] > 0)
{
buff->allocateBuffer(sizes[i*2+1], sizes[i*2], true);
buff->setBuffer(LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_NORMAL | LLVertexBuffer::MAP_TEXCOORD0);
glodFillElements(object, names[i], GL_UNSIGNED_SHORT, buff->getIndicesPointer());
stop_gloderror();
}
else
{
// this face was eliminated, create a dummy triangle (one vertex, 3 indices, all 0)
buff->allocateBuffer(1, 3, true);
}
vertex_buffers.push_back(buff);
}
glodDeleteObject(object);
stop_gloderror();
glodDeleteGroup(group);
stop_gloderror();
delete [] sizes;
delete [] names;
}
GLODMesh::~GLODMesh()
{
if ( _lodObjectName )
glodDeleteObject( _lodObjectName );
if ( _lodGroupName )
glodDeleteGroup( _lodGroupName );
--s_glodNumObjects;
if ( s_glodNumObjects == 0 )
{
// shutdown GLOD
glodShutdown();
// reset group and object id counters
s_lodGroup = 1;
s_lodObject = 1;
}
}
