diff options
Diffstat (limited to 'intern/cycles/render/tables.cpp')
-rw-r--r-- | intern/cycles/render/tables.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/intern/cycles/render/tables.cpp b/intern/cycles/render/tables.cpp new file mode 100644 index 00000000000..fecdd52c60c --- /dev/null +++ b/intern/cycles/render/tables.cpp @@ -0,0 +1,106 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "device.h" +#include "scene.h" +#include "tables.h" + +#include "util_debug.h" + +CCL_NAMESPACE_BEGIN + +LookupTables::LookupTables() +{ + need_update = true; +} + +LookupTables::~LookupTables() +{ + assert(lookup_tables.size() == 0); +} + +void LookupTables::device_update(Device *device, DeviceScene *dscene) +{ + if(!need_update) + return; + + device->tex_alloc("__lookup_table", dscene->lookup_table, true); // XXX interpolation + + need_update = false; +} + +void LookupTables::device_free(Device *device, DeviceScene *dscene) +{ + device->tex_free(dscene->lookup_table); + dscene->lookup_table.clear(); +} + +static size_t round_up_to_multiple(size_t size, size_t chunk) +{ + return ((size + chunk - 1)/chunk) * chunk; +} + +size_t LookupTables::add_table(DeviceScene *dscene, vector<float>& data) +{ + assert(data.size() > 0); + + need_update = true; + + Table new_table; + new_table.offset = 0; + new_table.size = round_up_to_multiple(data.size(), TABLE_CHUNK_SIZE); + + /* find space to put lookup table */ + list<Table>::iterator table; + + for(table = lookup_tables.begin(); table != lookup_tables.end(); table++) { + if(new_table.offset + new_table.size <= table->offset) { + lookup_tables.insert(table, new_table); + break; + } + } + + if(table == lookup_tables.end()) { + /* add at the end */ + lookup_tables.push_back(new_table); + dscene->lookup_table.resize(new_table.offset + new_table.size); + } + + /* copy table data and return offset */ + dscene->lookup_table.copy_at(&data[0], new_table.offset, data.size()); + return new_table.offset; +} + +void LookupTables::remove_table(size_t offset) +{ + need_update = true; + + list<Table>::iterator table; + + for(table = lookup_tables.begin(); table != lookup_tables.end(); table++) { + if(table->offset == offset) { + lookup_tables.erase(table); + break; + } + } + + assert(table != lookup_tables.end()); +} + +CCL_NAMESPACE_END + |