def render():
# Render commands submitting
# Get next image in core swapchain
image_index, result = hvk.acquire_next_image(api,
device,
swapchain,
semaphore=image_ready)
# Wait until the rendering of the last scene is done
fence = render_fences[image_index]
hvk.wait_for_fences(api, device, (fence, ))
hvk.reset_fences(api, device, (fence, ))
# Start rendering on the next image
submit_info = hvk.submit_info(
wait_dst_stage_mask=(vk.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, ),
wait_semaphores=(image_ready, ),
signal_semaphores=(rendering_done, ),
command_buffers=(cmd_draw[image_index], ))
hvk.queue_submit(api, render_queue.handle, (submit_info, ), fence=fence)
# Present the next image once rendering is done
hvk.queue_present(
api, render_queue.handle,
hvk.present_info(swapchains=(swapchain, ),
image_indices=(image_index, ),
wait_semaphores=(rendering_done, )))
def _setup_render_cache(self):
engine = self.engine
self.render_cache["submit_info"] = hvk.submit_info(
wait_dst_stage_mask=(
vk.PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, ),
wait_semaphores=(self.image_ready, ),
signal_semaphores=(self.rendering_done, ),
command_buffers=(0, ))
self.render_cache["present_info"] = hvk.present_info(
swapchains=(engine.swapchain, ),
image_indices=(0, ),
wait_semaphores=(self.rendering_done, ))