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

.. only:: html

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

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

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

.. _sphx_glr_gallery_gui_direct.py:


GUI Direct
----------

Direct integration of glfw and wgpu-py without using the RenderCanvas library.

Demonstration for hardcore users that need total low-level control.

.. GENERATED FROM PYTHON SOURCE LINES 10-79

.. code-block:: Python


    # run_example = false

    import time
    import atexit

    import glfw
    import wgpu
    from wgpu.utils.glfw_present_info import get_glfw_present_info

    # from triangle import setup_drawing_sync
    from cube import setup_drawing_sync

    # Setup glfw
    glfw.init()
    atexit.register(glfw.terminate)

    # disable automatic API selection, we are not using opengl
    glfw.window_hint(glfw.CLIENT_API, glfw.NO_API)
    glfw.window_hint(glfw.RESIZABLE, True)


    title = "wgpu glfw direct"
    window = glfw.create_window(640, 480, title, None, None)
    present_info = get_glfw_present_info(window)

    context = wgpu.gpu.get_canvas_context(present_info)

    # Initialize physical size once. For robust apps update this on resize events.
    context.set_physical_size(*glfw.get_framebuffer_size(window))


    def main():
        draw_frame = setup_drawing_sync(context)

        last_frame_time = time.perf_counter()
        frame_count = 0

        # render loop
        while not glfw.window_should_close(window):
            # process inputs
            glfw.poll_events()

            # resize handling
            context.set_physical_size(*glfw.get_framebuffer_size(window))

            # draw a frame
            draw_frame()
            # present the frame to the screen
            context.present()
            # stats
            frame_count += 1
            etime = time.perf_counter() - last_frame_time
            if etime > 1:
                print(f"{frame_count / etime:0.1f} FPS")
                last_frame_time, frame_count = time.perf_counter(), 0

        # dispose resources
        context.unconfigure()
        glfw.destroy_window(window)

        # allow proper cleanup (workaround for glfw bug)
        end_time = time.perf_counter() + 0.1
        while time.perf_counter() < end_time:
            glfw.wait_events_timeout(end_time - time.perf_counter())


    if __name__ == "__main__":
        main()


.. _sphx_glr_download_gallery_gui_direct.py:

.. only:: html

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

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

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

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

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

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

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


.. only:: html

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

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