def test_buffer_reassign_fail(self):
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros(10, dtype=dtype(("float32", 4)))
self.vao["position"].data = buf.items
with buf.bind(GL.GL_ARRAY_BUFFER):
with self.assertRaises(ValueError):
buf[...] = numpy.zeros(10, dtype=dtype(("float32", 3)))
def test_simple_buffer(self):
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype(('float32', (100, 3)))
i = buf.items
self.assertEqual(i.dtype, dtype(('float32', 3)))
self.assertEqual(i.components, 3)
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype(('float32', (100, 3)))
i = buf.items[0]
self.assertEqual(i.dtype, dtype(('float32')))
self.assertEqual(i.components, 1)
def test_buffer_properties(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, 100))
self.assertEqual(buf.nbytes, 2000)
self.assertEqual(buf.dtype, dtype((point, 100)))
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, (20, 5)))
self.assertEqual(buf.nbytes, 2000)
self.assertEqual(buf.dtype, dtype((point, (20, 5))))
with self.assertRaises(IndexError):
buf[::2]
def test_vao_attributes(self):
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros(10, dtype=dtype(("float32", 4)))
self.assertEqual(self.vao["position"].location, self.program.vertex_attributes["position"].location)
self.vao["position"].data = buf.items
def test_sub_buffer_set(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros((20, 5), dtype=point)
buf[0].data = numpy.ones(5, dtype=point)
buf[0][:-1].data = numpy.zeros(4, dtype=point)
def test_record_index(self):
point = dtype([('position', pos), ('UV', uv)])
buf_type = dtype([('', point, 100), ('', col, 50)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = buf_type
self.assertIsNone(buf.stride)
self.assertEqual(buf[0].nbytes, 2000)
self.assertEqual(buf['f0'].nbytes, 2000)
self.assertEqual(buf[0].offset, 0)
self.assertEqual(buf['f0'].offset, 0)
self.assertEqual(buf[0].stride, 20)
self.assertEqual(buf['f0'].stride, 20)
self.assertEqual(buf[1].nbytes, 200)
self.assertEqual(buf['f1'].nbytes, 200)
self.assertEqual(buf[1].offset, 2000)
self.assertEqual(buf['f1'].offset, 2000)
self.assertEqual(buf[1].stride, 4)
self.assertEqual(buf['f1'].stride, 4)
with self.assertRaises(IndexError):
buf['f0', 'f1']
with self.assertRaises(IndexError):
buf[['f0', 'f1']]
def test_flush(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros((20, 5), dtype=point)
m = buf.map(GL.GL_MAP_WRITE_BIT | GL.GL_MAP_FLUSH_EXPLICIT_BIT)
m.flush()
def test_buffer_change(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros((20, 5), dtype=point)
buf.data = numpy.ones((20, 5), dtype=point)
with self.assertRaises(ValueError):
buf.data = numpy.ones((20, 4), dtype=point)
def test_sub_buffer_get(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros((20, 5), dtype=point)
np_test.assert_equal(buf[0].data, numpy.zeros(5, dtype=point))
buf[...] = numpy.ones((20, 5), dtype=point)
np_test.assert_equal(buf[0].data, numpy.ones(5, dtype=point))
def test_subbuffer_map(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = numpy.zeros((20, 5), dtype=point)
m = buf[0].map()
self.assertTrue(buf.mapped)
np_test.assert_equal(m, numpy.zeros(5, dtype=point))
m[0] = numpy.ones(1, dtype=point)
with buf.bind(GL.GL_ARRAY_BUFFER):
buf.unmap()
self.assertFalse(buf.mapped)
with buf.bind(GL.GL_ARRAY_BUFFER):
m = buf[0].map()
np_test.assert_equal(m[0], numpy.ones(1, dtype=point))
np_test.assert_equal(m[1:], numpy.zeros(4, dtype=point))
with buf.bind(GL.GL_ARRAY_BUFFER):
buf.unmap()
def test_subbuffer_item(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, 100))
p = buf[10:].items['position']
self.assertEqual(p.offset, 200)
self.assertEqual(p.dtype, pos)
self.assertEqual(p.components, 3)
u = buf[10:].items['UV']
self.assertEqual(u.offset, 212)
self.assertEqual(u.dtype, uv)
self.assertEqual(u.components, 2)
def test_array_component_index(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, 100))
self.assertEqual(buf[['position', 'UV']].nbytes, 2000)
self.assertEqual(buf[['position', 'UV']].offset, 0)
self.assertEqual(buf[['position', 'bar', 'UV', 'foo']].offset, 0)
with self.assertRaises(IndexError):
buf[['position']]
with self.assertRaises(IndexError):
buf['position']
self.assertEqual(buf[0]['position'].dtype, dtype(('float32', (3,))))
self.assertEqual(buf[0:1][['position']].dtype, dtype((dtype([('position', pos)]), (1,))))
self.assertEqual(buf[0:1][['position', 'UV']].dtype, dtype((point, (1,))))
self.assertEqual(buf[0:1]['position'].dtype, dtype(('float32', (1, 3))))
def test_array_buffer_array_index(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, 100))
self.assertEqual(buf[0].nbytes, 20)
self.assertEqual(buf[0].offset, 0)
self.assertEqual(buf[0].dtype, point)
self.assertEqual(buf[20].nbytes, 20)
self.assertEqual(buf[20].offset, 400)
self.assertEqual(buf[20].dtype, point)
self.assertEqual(buf[:20].nbytes, 400)
self.assertEqual(buf[:20].dtype, dtype((point, 20)))
with self.assertRaises(IndexError):
buf[100]
with self.assertRaises(IndexError):
buf[0, 0]
with self.assertRaises(IndexError):
buf[10:15, 1]
with self.assertRaises(IndexError):
buf[:, 1]
def test_multidim_array_buffer_index(self):
point = dtype([('position', pos), ('UV', uv)])
buf = Buffer()
with buf.bind(GL.GL_ARRAY_BUFFER):
buf[...] = dtype((point, (20, 5)))
self.assertEqual(buf[0].nbytes, 100)
self.assertEqual(buf[0].offset, 0)
self.assertEqual(buf[0].dtype, dtype((point, 5)))
self.assertEqual(buf[10].nbytes, 100)
self.assertEqual(buf[10].offset, 1000)
self.assertEqual(buf[10].dtype, dtype((point, 5)))
self.assertEqual(buf[0, 0].nbytes, 20)
self.assertEqual(buf[0, 0].offset, 0)
self.assertEqual(buf[0, 0].dtype, point)
self.assertEqual(buf[10, 1].nbytes, 20)
self.assertEqual(buf[10, 1].offset, 1020)
self.assertEqual(buf[10, 1].dtype, point)
with self.assertRaises(IndexError):
buf[20]
with self.assertRaises(IndexError):
buf[0, 0, 0]