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Depth Overlay 1
Example (and test) for behavior of the depth buffer w.r.t. overlays, implemented by multiple render calls. The overlay should always be on top.
import numpy as np
from wgpu.gui.auto import WgpuCanvas, run
import pygfx as gfx
import pylinalg as la
# Create a canvas and renderer
canvas = WgpuCanvas(size=(500, 300))
renderer = gfx.renderers.WgpuRenderer(canvas)
# Compose a scene with a 3D cube at the origin
scene1 = gfx.Scene()
cube1 = gfx.Mesh(
gfx.box_geometry(),
gfx.MeshPhongMaterial(color="#ff0"),
)
rot = la.quat_from_euler((0.2, 0.3), order="XY")
cube1.local.rotation = la.quat_mul(rot, cube1.local.rotation)
scene1.add(cube1)
# Compose a scene with a 2D square at the origin, in the xy plane
scene2 = gfx.Scene()
positions = np.array(
[
[-1, -1, 0.0],
[-1, +1, 0.0],
[+1, +1, 0.0],
[+1, -1, 0.0],
[-1, -1, 0.0],
[+1, +1, 0.0],
],
np.float32,
)
line2 = gfx.Line(
gfx.Geometry(positions=positions * 0.5),
gfx.LineMaterial(thickness=5.0, color="#f0f"),
)
scene2.add(line2)
# Camera
camera = gfx.OrthographicCamera(2, 2)
scene1.add(camera.add(gfx.DirectionalLight()))
def draw():
renderer.render(scene1, camera, flush=False)
renderer.render(scene2, camera, flush=False)
renderer.flush()
canvas.request_draw(draw)
if __name__ == "__main__":
print(__doc__)
run()
Total running time of the script: (0 minutes 0.233 seconds)