.. DO NOT EDIT. .. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY. .. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE: .. "_gallery/feature_demo/bloom2.py" .. LINE NUMBERS ARE GIVEN BELOW. .. only:: html .. note:: :class: sphx-glr-download-link-note :ref:`Go to the end ` to download the full example code. .. rst-class:: sphx-glr-example-title .. _sphx_glr__gallery_feature_demo_bloom2.py: Bloom Effect Demo ================= This example shows a bloom rendering effect. .. GENERATED FROM PYTHON SOURCE LINES 9-15 .. note:: To run this example, you need a model from the source repo's example folder. If you are running this example from a local copy of the code (dev install) no further actions are needed. Otherwise, you may have to replace the path below to point to the location of the model. .. GENERATED FROM PYTHON SOURCE LINES 15-27 .. code-block:: Python import os from pathlib import Path try: # modify this line if your model is located elsewhere model_dir = Path(__file__).parents[1] / "data" except NameError: # compatibility with sphinx-gallery model_dir = Path(os.getcwd()).parent / "data" .. GENERATED FROM PYTHON SOURCE LINES 28-29 Once the path is set correctly, you can use the model as follows: .. GENERATED FROM PYTHON SOURCE LINES 29-159 .. code-block:: Python import imageio.v3 as iio from rendercanvas.auto import RenderCanvas, loop import pygfx as gfx from wgpu.utils.imgui import ImguiRenderer, Stats from imgui_bundle import imgui # Init canvas = RenderCanvas( size=(1280, 720), title="bloom_effect", update_mode="fastest", vsync=False ) renderer = gfx.renderers.WgpuRenderer(canvas) scene = gfx.Scene() # Read cube image and turn it into a 3D image (a 4d array) env_img = iio.imread("imageio:meadow_cube.jpg") cube_size = env_img.shape[1] env_img.shape = 6, cube_size, cube_size, env_img.shape[-1] # Create environment map env_tex = gfx.Texture( env_img, dim=2, size=(cube_size, cube_size, 6), generate_mipmaps=True ) # Apply env map to skybox background = gfx.Background.from_color((0.0, 0.0, 0.0, 1)) scene.add(background) # Load meshes, and apply env map # Note that this lights the helmet already gltf_path = model_dir / "phoenix_bird.glb" gltf = gfx.load_gltf(gltf_path) # gfx.print_scene_graph(gltf.scene) # Uncomment to see the tree structure def add_env_map(obj, env_map): if isinstance(obj, gfx.Mesh) and isinstance(obj.material, gfx.MeshStandardMaterial): obj.material.env_map = env_map gltf.scene.traverse(lambda obj: add_env_map(obj, env_tex)) scene.add(gltf.scene) # Add extra light more or less where the sun seems to be in the skybox light = gfx.SpotLight(color="#444") light.local.position = (-500, 1000, -1000) scene.add(light) # Create bloom effect pass using the new API bloom_pass = gfx.renderers.wgpu.PhysicalBasedBloomPass( bloom_strength=0.4, max_mip_levels=6, filter_radius=0.005, use_karis_average=False, ) # Add bloom pass to renderer's effect passes renderer.effect_passes = [bloom_pass] action_clip = gltf.animations[0] animation_mixer = gfx.AnimationMixer() action = animation_mixer.clip_action(action_clip) action.play() # Create camera and controller camera = gfx.PerspectiveCamera(45, 16 / 9) camera.show_object(gltf.scene) controller = gfx.OrbitController(camera, register_events=renderer) clock = gfx.Clock() gui_renderer = ImguiRenderer(renderer.device, canvas) def draw_imgui(): imgui.set_next_window_size((400, 0), imgui.Cond_.always) imgui.set_next_window_pos((0, 0), imgui.Cond_.always) imgui.begin("Bloom Settings") changed, value = imgui.checkbox("bloom", bloom_pass.enabled) if changed: bloom_pass.enabled = value changed, value = imgui.slider_float( "Bloom Strength", bloom_pass.bloom_strength, 0.0, 3.0 ) if changed: bloom_pass.bloom_strength = value changed, value = imgui.slider_int( "Max Mipmap Levels", bloom_pass.max_mip_levels, 1, 10 ) if changed: bloom_pass.max_mip_levels = value changed, value = imgui.slider_float( "Filter Radius", bloom_pass.filter_radius, 0.0, 0.01 ) if changed: bloom_pass.filter_radius = value changed, value = imgui.checkbox("Use Karis Average", bloom_pass.use_karis_average) if changed: bloom_pass.use_karis_average = value imgui.end() gui_renderer.set_gui(draw_imgui) stats = Stats(renderer.device, canvas, align="right") def animate(): dt = clock.get_delta() animation_mixer.update(dt) with stats: renderer.render(scene, camera) gui_renderer.render() canvas.request_draw() if __name__ == "__main__": renderer.request_draw(animate) loop.run() .. image-sg:: /_gallery/feature_demo/images/sphx_glr_bloom2_001.webp :alt: bloom2 :srcset: /_gallery/feature_demo/images/sphx_glr_bloom2_001.webp :class: sphx-glr-single-img .. rst-class:: sphx-glr-timing **Total running time of the script:** (0 minutes 3.346 seconds) .. _sphx_glr_download__gallery_feature_demo_bloom2.py: .. only:: html .. container:: sphx-glr-footer sphx-glr-footer-example .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: bloom2.ipynb ` .. container:: sphx-glr-download sphx-glr-download-python :download:`Download Python source code: bloom2.py ` .. container:: sphx-glr-download sphx-glr-download-zip :download:`Download zipped: bloom2.zip ` .. only:: html .. rst-class:: sphx-glr-signature `Gallery generated by Sphinx-Gallery `_ .. only:: html Interactive example ------------------- Try this example in your browser using Pyodide. Might not work with all examples and all devices. Check the output and your browser's console for details. .. raw:: html