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from pathlib import Path
import glm
import moderngl
from base import CameraWindow
from moderngl_window import geometry
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 on_render(self, time: float, frametime: float):
self.ctx.enable_only(moderngl.CULL_FACE | moderngl.DEPTH_TEST)
rotation = glm.mat4(glm.quat(glm.vec3(time, time, time)))
translation = glm.translate(glm.vec3(0.0, 0.0, -3.5))
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__":
TextureArrayExample.run()
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