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from pathlib import Path
from pyrr import Matrix44
import moderngl
import moderngl_window
from moderngl_window import geometry
from base import CameraWindow
class TextureArrayExample(CameraWindow):
"""
Cycles different texture layers in an array texture
rendered on a cube.
"""
title = "Texture Array"
resource_dir = (Path(__file__).parent / 'resources').resolve()
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.wnd.mouse_exclusivity = True
self.num_layers = 10
self.cube = geometry.cube(size=(2, 2, 2))
self.texture = self.load_texture_array(
'textures/array.png', layers=self.num_layers, mipmap=True, anisotrpy=8.0)
self.prog = self.load_program('programs/cube_texture_array.glsl')
self.prog['texture0'].value = 0
self.prog['num_layers'].value = 10
def render(self, time: float, frametime: float):
self.ctx.enable_only(moderngl.CULL_FACE | moderngl.DEPTH_TEST)
rotation = Matrix44.from_eulers((time, time, time), dtype='f4')
translation = Matrix44.from_translation((0.0, 0.0, -3.5), dtype='f4')
modelview = translation * rotation
self.prog['m_proj'].write(self.camera.projection.matrix)
self.prog['m_model'].write(modelview)
self.prog['m_camera'].write(self.camera.matrix)
self.prog['time'].value = time
self.texture.use(location=0)
self.cube.render(self.prog)
if __name__ == '__main__':
moderngl_window.run_window_config(TextureArrayExample)
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