def load_bvh(geometry, bvh_name="default",
auto_build_bvh=True, read_bvh_cache=True,
update_bvh_cache=True, cache_dir=None,
cuda_device=None):
if cache_dir is None:
cache = Cache()
else:
cache = Cache(cache_dir)
mesh_hash = geometry.mesh.md5()
bvh = None
if read_bvh_cache and cache.exist_bvh(mesh_hash, bvh_name):
logger.info('Loading BVH "%s" for geometry from cache.' % bvh_name)
bvh = cache.load_bvh(mesh_hash, bvh_name)
elif auto_build_bvh:
logger.info('Building new BVH using recursive grid algorithm.')
start = time.time()
context = create_cuda_context(cuda_device)
bvh = make_recursive_grid_bvh(geometry.mesh, target_degree=3)
context.pop()
logger.info('BVH generated in %1.1f seconds.' % (time.time() - start))
if update_bvh_cache:
logger.info('Saving BVH (%s:%s) to cache.' % (mesh_hash, bvh_name))
cache.save_bvh(bvh, mesh_hash, bvh_name)
return bvh
def load_bvh(geometry,
bvh_name="default",
auto_build_bvh=True,
read_bvh_cache=False,
update_bvh_cache=True,
cache_dir=None,
cuda_device=None):
if cache_dir is None:
cache = Cache()
else:
cache = Cache(cache_dir)
mesh_hash = geometry.mesh.md5()
bvh = None
if read_bvh_cache and cache.exist_bvh(mesh_hash, bvh_name):
logger.info('Loading BVH "%s" for geometry from cache.' % bvh_name)
bvh = cache.load_bvh(mesh_hash, bvh_name)
elif auto_build_bvh:
logger.info('Building new BVH using recursive grid algorithm.')
start = time.time()
context = create_cuda_context(cuda_device)
bvh = make_recursive_grid_bvh(geometry.mesh, target_degree=3)
context.pop()
logger.info('BVH generated in %1.1f seconds.' % (time.time() - start))
if update_bvh_cache:
logger.info('Saving BVH (%s:%s) to cache.' % (mesh_hash, bvh_name))
cache.save_bvh(bvh, mesh_hash, bvh_name)
return bvh
def load_bvh(geometry,
bvh_name="default",
auto_build_bvh=True,
read_bvh_cache=True,
target_degree=3,
update_bvh_cache=True,
cache_dir=None,
bvh_method='grid',
cuda_device=None,
cl_device=None):
if cache_dir is None:
cache = Cache()
else:
cache = Cache(cache_dir)
mesh_hash = geometry.mesh.md5()
bvh = None
if read_bvh_cache and cache.exist_bvh(mesh_hash, bvh_name):
logger.debug('Loading BVH "%s" for geometry from cache.' % bvh_name)
bvh = cache.load_bvh(mesh_hash, bvh_name)
elif auto_build_bvh:
logger.info('Building new BVH using recursive grid algorithm.')
start = time.time()
# creates quick context to make BVH
if api.is_gpu_api_cuda():
context = cutools.create_cuda_context(cuda_device)
if bvh_method == 'grid':
bvh = make_recursive_grid_bvh(geometry.mesh, target_degree=3)
elif bvh_method == 'simple':
bvh = make_simple_bvh(geometry.mesh, 3)
else:
raise ValueError(
'Requestd BVH construction method invalid: %s' %
(bvh_method))
context.pop()
elif api.is_gpu_api_opencl():
context = cltools.create_cl_context(cl_device)
if bvh_method == 'grid':
bvh = make_recursive_grid_bvh(geometry.mesh,
target_degree=target_degree)
elif bvh_method == 'simple':
bvh = make_simple_bvh(geometry.mesh, target_degree)
else:
raise ValueError(
'Requestd BVH construction method invalid: %s' %
(bvh_method))
cltools.close_cl_context(context)
logger.info('BVH generated in %1.1f seconds.' % (time.time() - start))
if update_bvh_cache:
logger.info('Saving BVH (%s:%s) to cache.' % (mesh_hash, bvh_name))
cache.save_bvh(bvh, mesh_hash, bvh_name)
return bvh
class TestCacheBVH(unittest.TestCase):
def setUp(self):
self.cache_dir = random_tempdir('chroma_cache_test')
self.cache = Cache(self.cache_dir)
self.a = Geometry()
self.a.add_solid(Solid(box(1, 1, 1)))
self.a.add_solid(Solid(box(1, 1, 1)), displacement=(10, 10, 10))
self.a.flatten()
self.b = Geometry()
self.b.add_solid(Solid(box(2, 2, 2)))
self.b.add_solid(Solid(box(2, 2, 2)), displacement=(10, 10, 10))
self.b.add_solid(Solid(box(2, 2, 2)), displacement=(-10, -10, -10))
self.b.flatten()
# c is not in cache
self.c = Geometry()
self.c.add_solid(Solid(box(2, 2, 2)))
self.c.flatten()
self.a_hash = self.a.mesh.md5()
self.b_hash = self.b.mesh.md5()
self.c_hash = self.c.mesh.md5()
self.cache.save_geometry('a', self.a)
self.cache.save_geometry('b', self.b)
def test_list_bvh(self):
self.assertEqual(len(self.cache.list_bvh(self.a_hash)), 0)
self.cache.save_bvh([], self.a_hash)
self.assertIn('default', self.cache.list_bvh(self.a_hash))
self.cache.save_bvh([], self.a_hash, 'foo')
self.assertIn('foo', self.cache.list_bvh(self.a_hash))
self.assertEqual(len(self.cache.list_bvh(self.a_hash)), 2)
def test_exist_bvh(self):
self.cache.save_bvh([], self.a_hash)
assert self.cache.exist_bvh(self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
assert self.cache.exist_bvh(self.a_hash, 'foo')
def test_load_bvh_not_found(self):
with self.assertRaises(BVHNotFoundError):
self.cache.load_bvh(self.c_hash)
with self.assertRaises(BVHNotFoundError):
self.cache.load_bvh(self.a_hash, 'foo')
def test_save_load_new_bvh(self):
self.cache.save_bvh([], self.a_hash)
self.cache.load_bvh(self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
self.cache.load_bvh(self.a_hash, 'foo')
def test_remove_bvh(self):
self.cache.remove_bvh(self.a_hash, 'does_not_exist')
self.cache.save_bvh([], self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
assert self.cache.exist_bvh(self.a_hash)
assert self.cache.exist_bvh(self.a_hash, 'foo')
self.cache.remove_bvh(self.a_hash)
assert not self.cache.exist_bvh(self.a_hash)
assert self.cache.exist_bvh(self.a_hash, 'foo')
self.cache.remove_bvh(self.a_hash, 'foo')
assert not self.cache.exist_bvh(self.a_hash)
assert not self.cache.exist_bvh(self.a_hash, 'foo')
def tearDown(self):
remove_path(self.cache_dir)
class TestCacheBVH(unittest.TestCase):
def setUp(self):
self.cache_dir = random_tempdir('chroma_cache_test')
self.cache = Cache(self.cache_dir)
self.a = Geometry()
self.a.add_solid(Solid(box(1,1,1)))
self.a.add_solid(Solid(box(1,1,1)), displacement=(10,10,10))
self.a.flatten()
self.b = Geometry()
self.b.add_solid(Solid(box(2,2,2)))
self.b.add_solid(Solid(box(2,2,2)), displacement=(10,10,10))
self.b.add_solid(Solid(box(2,2,2)), displacement=(-10,-10,-10))
self.b.flatten()
# c is not in cache
self.c = Geometry()
self.c.add_solid(Solid(box(2,2,2)))
self.c.flatten()
self.a_hash = self.a.mesh.md5()
self.b_hash = self.b.mesh.md5()
self.c_hash = self.c.mesh.md5()
self.cache.save_geometry('a', self.a)
self.cache.save_geometry('b', self.b)
def test_list_bvh(self):
self.assertEqual(len(self.cache.list_bvh(self.a_hash)), 0)
self.cache.save_bvh([], self.a_hash)
self.assertIn('default', self.cache.list_bvh(self.a_hash))
self.cache.save_bvh([], self.a_hash, 'foo')
self.assertIn('foo', self.cache.list_bvh(self.a_hash))
self.assertEqual(len(self.cache.list_bvh(self.a_hash)), 2)
def test_exist_bvh(self):
self.cache.save_bvh([], self.a_hash)
assert self.cache.exist_bvh(self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
assert self.cache.exist_bvh(self.a_hash, 'foo')
def test_load_bvh_not_found(self):
with self.assertRaises(BVHNotFoundError):
self.cache.load_bvh(self.c_hash)
with self.assertRaises(BVHNotFoundError):
self.cache.load_bvh(self.a_hash, 'foo')
def test_save_load_new_bvh(self):
self.cache.save_bvh([], self.a_hash)
self.cache.load_bvh(self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
self.cache.load_bvh(self.a_hash, 'foo')
def test_remove_bvh(self):
self.cache.remove_bvh(self.a_hash, 'does_not_exist')
self.cache.save_bvh([], self.a_hash)
self.cache.save_bvh([], self.a_hash, 'foo')
assert self.cache.exist_bvh(self.a_hash)
assert self.cache.exist_bvh(self.a_hash, 'foo')
self.cache.remove_bvh(self.a_hash)
assert not self.cache.exist_bvh(self.a_hash)
assert self.cache.exist_bvh(self.a_hash, 'foo')
self.cache.remove_bvh(self.a_hash, 'foo')
assert not self.cache.exist_bvh(self.a_hash)
assert not self.cache.exist_bvh(self.a_hash, 'foo')
def tearDown(self):
remove_path(self.cache_dir)