.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "_gallery/other/post_processing2.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download__gallery_other_post_processing2.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr__gallery_other_post_processing2.py:


Fullscreen Postprocessing 2
===========================

Example showing post-processing effects by modifying the flusher object.

This example is a placeholder for how post-processing *could* work if
we'd provide an API for it.

Note: this example makes heavy use of private variables and makes
assumptions about how the RenderFlusher works that may not hold in the
future.

.. GENERATED FROM PYTHON SOURCE LINES 15-74

.. code-block:: Python



    import numpy as np
    import imageio.v3 as iio
    from wgpu.gui.auto import WgpuCanvas, run
    import pygfx as gfx


    raise RuntimeError("Post-processing needs to be redesigned")

    canvas = WgpuCanvas()
    renderer = gfx.renderers.WgpuRenderer(canvas)
    scene = gfx.Scene()

    im = iio.imread("imageio:bricks.jpg").astype(np.float32) / 255
    tex = gfx.Texture(im, dim=2).get_view(filter="linear", address_mode="repeat")

    geometry = gfx.box_geometry(200, 200, 200)
    geometry.texcoords.data[:] *= 2  # smaller bricks
    material = gfx.MeshPhongMaterial(map=tex, color=(1, 0, 0, 0.2))
    cube = gfx.Mesh(geometry, material)
    scene.add(cube)

    camera = gfx.PerspectiveCamera(70, 16 / 9)
    camera.position.z = 400


    class MyRenderFlusher(gfx.renderers.wgpu._renderutils.RenderFlusher):
        uniform_type = dict(
            size="2xf4",
            sigma="f4",
            support="i4",
            amplitude="f4",
        )

        def __init__(self, device):
            super().__init__(device)
            code = """
                let a = u_render.amplitude;
                tex_coord.x = tex_coord.x + sin(tex_coord.y * 20.0) * a;
            """
            self._shader["tex_coord_map"] = code
            self._uniform_data["amplitude"] = 0.02


    renderer._flusher = MyRenderFlusher(renderer.device)


    def animate():
        rot = gfx.linalg.Quaternion().set_from_euler(gfx.linalg.Euler(0.005, 0.01))
        cube.rotation.multiply(rot)

        renderer.render(scene, camera)
        canvas.request_draw()


    if __name__ == "__main__":
        canvas.request_draw(animate)
        run()


.. _sphx_glr_download__gallery_other_post_processing2.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: post_processing2.ipynb <post_processing2.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: post_processing2.py <post_processing2.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: post_processing2.zip <post_processing2.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_