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 compute_noise():
hvk.begin_command_buffer(api, staging_cmd, hvk.command_buffer_begin_info())
# Execute the compute shader
hvk.bind_pipeline(api, staging_cmd, compute_pipeline,
vk.PIPELINE_BIND_POINT_COMPUTE)
hvk.bind_descriptor_sets(api, staging_cmd, vk.PIPELINE_BIND_POINT_COMPUTE,
compute_pipeline_layout,
(compute_descriptor_set, ))
hvk.dispatch(api, staging_cmd, 256 // 16, 256 // 16, 1)
# Move the image layout to shader read optimal for rendering
barrier = hvk.image_memory_barrier(
image=noise_image,
old_layout=vk.IMAGE_LAYOUT_GENERAL,
new_layout=vk.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
src_access_mask=vk.ACCESS_TRANSFER_WRITE_BIT,
dst_access_mask=vk.ACCESS_SHADER_READ_BIT,
)
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_FRAGMENT_SHADER_BIT)
hvk.end_command_buffer(api, staging_cmd)
# Submit the staging command buffer
hvk.reset_fences(api, device, (staging_fence, ))
submit_info = hvk.submit_info(command_buffers=(staging_cmd, ))
hvk.queue_submit(api,
render_queue.handle, (submit_info, ),
fence=staging_fence)
hvk.wait_for_fences(api, device, (staging_fence, ))
def submit_setup_command(self, wait=False):
api, device = self.api, self.device
fence = 0
if wait:
fence = self.setup_fence
infos = (hvk.submit_info(command_buffers=(self.setup_command_buffer,)),)
hvk.queue_submit(api, self.render_queue.handle, infos, fence)
if wait:
f = (fence,)
hvk.wait_for_fences(api, device, f)
hvk.reset_fences(api, device, f)
def run(self, data_scene, data_compute, group, sync, after, before, callback):
if data_compute in self.running:
raise RuntimeError(f"Compute shader {data_compute.compute.name} is already running")
engine, api, device = self.ctx
queue = data_compute.queue
cmd = data_scene.compute_commands[data_compute.command_index]
pipeline = data_scene.compute_pipelines[data_compute.pipeline]
x, y, z = group
before = () if before is None else before
after = () if after is None else after
# Record the commands
hvk.begin_command_buffer(api, cmd, hvk.command_buffer_begin_info())
hvk.bind_pipeline(api, cmd, pipeline, vk.PIPELINE_BIND_POINT_COMPUTE)
hvk.bind_descriptor_sets(api, cmd, vk.PIPELINE_BIND_POINT_COMPUTE, data_compute.pipeline_layout, data_compute.descriptor_sets)
CommandsRunner.run_device(before, api, cmd, queue, data_scene)
hvk.dispatch(api, cmd, x, y, z)
CommandsRunner.run_device(after, api, cmd, queue, data_scene)
hvk.end_command_buffer(api, cmd)
# Execute the command buffer
cmds = (cmd,)
fence = data_compute.fence
infos = (hvk.submit_info(command_buffers=cmds),)
hvk.queue_submit(api, queue.handle, infos, fence)
if sync:
f = (fence,)
hvk.wait_for_fences(api, device, f)
hvk.reset_fences(api, device, f)
CommandsRunner.run_app(before, data_scene)
CommandsRunner.run_app(after, data_scene)
callback()
else:
self.running.add(data_compute)
raise NotImplementedError("Compute without sync is not yet implemented")
def noise_layout_to_general():
# Image that support write operation must have the layout `IMAGE_LAYOUT_GENERAL`
hvk.begin_command_buffer(api, staging_cmd, hvk.command_buffer_begin_info())
barrier = hvk.image_memory_barrier(
image=noise_image,
new_layout=vk.IMAGE_LAYOUT_GENERAL,
dst_access_mask=vk.ACCESS_TRANSFER_WRITE_BIT,
)
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_TRANSFER_BIT)
hvk.end_command_buffer(api, staging_cmd)
# Submit the staging command buffer
hvk.reset_fences(api, device, (staging_fence, ))
submit_info = hvk.submit_info(command_buffers=(staging_cmd, ))
hvk.queue_submit(api,
render_queue.handle, (submit_info, ),
fence=staging_fence)
hvk.wait_for_fences(api, device, (staging_fence, ))
def texture_to_device():
global texture_image, texture_image_memory, texture_image_layout, texture_view, texture_sampler
global texture, staging_texture_buffer, staging_texture_memory
# Create the vulkan image
texture_image_layout = vk.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
texture_image = hvk.create_image(
api, device,
hvk.image_create_info(
format=texture.format,
mip_levels=len(texture.mipmaps),
extent=vk.Extent3D(texture.width, texture.height, texture.depth),
usage=vk.IMAGE_USAGE_TRANSFER_DST_BIT | vk.IMAGE_USAGE_SAMPLED_BIT,
))
img_req = hvk.image_memory_requirements(api, device, texture_image)
mt_index = find_memory_type(vk.MEMORY_HEAP_DEVICE_LOCAL_BIT,
vk.MEMORY_HEAP_DEVICE_LOCAL_BIT)
texture_image_memory = hvk.allocate_memory(
api, device,
hvk.memory_allocate_info(allocation_size=img_req.size,
memory_type_index=mt_index))
hvk.bind_image_memory(api, device, texture_image, texture_image_memory, 0)
# Build the copy regions (1 for each mipmap)
regions = []
for i, m in enumerate(texture.mipmaps):
region = hvk.buffer_image_copy(
image_subresource=hvk.image_subresource_layers(mip_level=i),
image_extent=vk.Extent3D(m.width, m.height, 1),
buffer_offset=m.offset)
regions.append(region)
# Build the image barrier for the image layout transitions
barrier = hvk.image_memory_barrier(
image=texture_image,
new_layout=0,
dst_access_mask=0,
subresource_range=hvk.image_subresource_range(
level_count=len(texture.mipmaps)))
# Transfer the staging data to device
hvk.begin_command_buffer(api, staging_cmd, hvk.command_buffer_begin_info())
barrier.new_layout = vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
barrier.dst_access_mask = vk.ACCESS_TRANSFER_WRITE_BIT
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_TRANSFER_BIT)
hvk.copy_buffer_to_image(api, staging_cmd, staging_texture_buffer,
texture_image,
vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, regions)
barrier.old_layout = vk.IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL
barrier.new_layout = vk.IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL
barrier.src_access_mask = vk.ACCESS_TRANSFER_WRITE_BIT
barrier.dst_access_mask = vk.ACCESS_SHADER_READ_BIT
hvk.pipeline_barrier(api,
staging_cmd, (barrier, ),
dst_stage_mask=vk.PIPELINE_STAGE_FRAGMENT_SHADER_BIT)
hvk.end_command_buffer(api, staging_cmd)
# Submit the staging command buffer
hvk.reset_fences(api, device, (staging_fence, ))
submit_info = hvk.submit_info(command_buffers=(staging_cmd, ))
hvk.queue_submit(api,
render_queue.handle, (submit_info, ),
fence=staging_fence)
hvk.wait_for_fences(api, device, (staging_fence, ))
# Create the image view and the sampler
texture_view = hvk.create_image_view(
api, device,
hvk.image_view_create_info(
image=texture_image,
format=texture.format,
subresource_range=hvk.image_subresource_range(
level_count=len(texture.mipmaps))))
texture_sampler = hvk.create_sampler(
api, device,
hvk.sampler_create_info(
mag_filter=vk.FILTER_LINEAR,
min_filter=vk.FILTER_LINEAR,
max_lod=len(texture.mipmaps),
))
# Free staging resources
hvk.destroy_buffer(api, device, staging_texture_buffer)
hvk.free_memory(api, device, staging_texture_memory)
del texture, staging_texture_buffer, staging_texture_memory