def test_setting_subdata(self):
data = np.zeros(100, np.float32)
buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
# Set subdata when no data is set
with self.assertRaises(RuntimeError):
buffer.set_subdata(0, data)
# Set nbytes and try again
buffer.set_nbytes(data.nbytes)
buffer.set_subdata(0, data)
# Subpart
buffer.set_subdata(0, data[:50])
buffer.set_subdata(50, data[50:])
# Too big
with self.assertRaises(ValueError):
buffer.set_subdata(1, data)
# Weird
with self.assertRaises(ValueError):
buffer.set_subdata(-1, data)
# Weirder
with self.assertRaises(ValueError):
buffer.set_subdata(1000000, data)
def test_setting_size(self):
data = np.zeros(100, np.float32)
buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
buffer.set_data(data)
self.assertEqual(buffer.nbytes, data.nbytes)
buffer.set_data( np.zeros(200, np.float32))
self.assertEqual(buffer.nbytes, 200*4)
buffer.set_nbytes(10)
self.assertEqual(buffer.nbytes, 10)
buffer.set_nbytes(20)
self.assertEqual(buffer.nbytes, 20)