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from pathlib import Path
import moderngl
from headless import HeadlessTestCase
from moderngl_window import resources
from moderngl_window.exceptions import ImproperlyConfigured
from moderngl_window.meta import TextureDescription
resources.register_dir((Path(__file__).parent / 'fixtures' / 'resources').resolve())
class TextureLoadersTestCase(HeadlessTestCase):
window_size = (16, 16)
aspect_ratio = 1.0
def test_texture_2d(self):
"""Load standard 2d texture"""
texture = resources.textures.load(TextureDescription(path='textures/crate.png'))
self.assertEqual(texture.size, (192, 192))
self.assertIsInstance(texture.extra.get('meta'), TextureDescription)
def test_texture_2d_8bit(self):
"""Test loading 8 bit texture with palette"""
texture = resources.textures.load(TextureDescription(path='textures/8bit.png'))
self.assertIsInstance(texture, moderngl.Texture)
def test_texture_not_found(self):
"""Ensure ImproperlyConfigured is raised if texture is not found"""
with self.assertRaises(ImproperlyConfigured):
resources.textures.load(TextureDescription(path='textures/doesnotexist.png'))
def test_texture_array(self):
"""Load texture array"""
texture = resources.textures.load(
TextureDescription(path='textures/array.png', layers=10, kind="array")
)
self.assertEqual(texture.size, (256, 256, 10))
self.assertIsInstance(texture.extra.get('meta'), TextureDescription)
def test_texture_array_no_layers(self):
"""Ensure error is raised when no layer is defined"""
with self.assertRaises(ImproperlyConfigured):
resources.textures.load(
TextureDescription(path='textures/array.png', kind="array")
)
def test_cubemap(self):
texture = resources.textures.load(TextureDescription(
pos_x='textures/cubemap/pos_x.png',
pos_y='textures/cubemap/pos_y.png',
pos_z='textures/cubemap/pos_z.png',
neg_x='textures/cubemap/neg_z.png',
neg_y='textures/cubemap/neg_y.png',
neg_z='textures/cubemap/neg_z.png',
kind='cube',
))
self.assertIsInstance(texture, moderngl.TextureCube)
def test_texture_mimpamps(self):
"""Load texture with mipmapping and anisotropy"""
desc = TextureDescription(
path='textures/crate.png',
mipmap_levels=(0, 2),
anisotropy=4.0,
)
texture = resources.textures.load(desc)
self.assertEqual(texture.anisotropy, 4.0)
self.assertEqual(desc.mipmap, True)
# Texture Array
desc = TextureDescription(
path='textures/array.png',
kind="array",
layers=10,
mipmap_levels=(0, 5),
anisotropy=8.0,
)
texture = resources.textures.load(desc)
self.assertEqual(texture.anisotropy, 8.0)
self.assertEqual(desc.mipmap, True)
def test_texture_abspath(self):
"""Strip search directories and use absolute path"""
path = (Path(__file__).parent / "fixtures/resources/textures/crate.png").resolve()
with resources.temporary_dirs([]):
desc = TextureDescription(
path=path,
mipmap_levels=(0, 2),
anisotropy=4.0,
)
texture = resources.textures.load(desc)
self.assertEqual(texture.anisotropy, 4.0)
self.assertEqual(desc.mipmap, True)
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