def create_render_resources():
global drawing_pool, cmd_draw, image_ready, rendering_done, render_fences
# Render commands setup
drawing_pool = hvk.create_command_pool(
api, device,
hvk.command_pool_create_info(
queue_family_index=render_queue.family.index,
flags=vk.COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT))
cmd_draw = hvk.allocate_command_buffers(
api, device,
hvk.command_buffer_allocate_info(
command_pool=drawing_pool,
command_buffer_count=len(swapchain_images)))
# Render commands synchronisation resources
info = hvk.semaphore_create_info()
image_ready = hvk.create_semaphore(api, device, info)
rendering_done = hvk.create_semaphore(api, device, info)
info = hvk.fence_create_info(flags=vk.FENCE_CREATE_SIGNALED_BIT)
render_fences = tuple(
hvk.create_fence(api, device, info)
for _ in range(len(swapchain_images)))
def _setup_sync(self):
engine, api, device = self.ctx
info = hvk.semaphore_create_info()
self.image_ready = hvk.create_semaphore(api, device, info)
self.rendering_done = hvk.create_semaphore(api, device, info)
self.render_fences = []
info = hvk.fence_create_info(flags=vk.FENCE_CREATE_SIGNALED_BIT)
for _ in range(len(engine.render_target.swapchain_images)):
self.render_fences.append(hvk.create_fence(api, device, info))
def create_staging_command():
global staging_pool, staging_cmd, staging_fence
# Create staging resources for uploading
staging_pool = hvk.create_command_pool(
api, device,
hvk.command_pool_create_info(
queue_family_index=render_queue.family.index,
flags=vk.COMMAND_POOL_CREATE_TRANSIENT_BIT
| vk.COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT))
staging_cmd = hvk.allocate_command_buffers(
api, device,
hvk.command_buffer_allocate_info(command_pool=staging_pool,
command_buffer_count=1))[0]
staging_fence = hvk.create_fence(api, device, hvk.fence_create_info())
def _setup_setup_commands(self):
api, device = self.api, self.device
render_queue = self.render_queue
command_pool = hvk.create_command_pool(api, device, hvk.command_pool_create_info(
queue_family_index = render_queue.family.index,
flags = vk.COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT
))
cmds = hvk.allocate_command_buffers(api, device, hvk.command_buffer_allocate_info(
command_pool = command_pool,
command_buffer_count = 1
))
fence_info = hvk.fence_create_info()
fence = hvk.create_fence(api, device, fence_info)
self.command_pool = command_pool
self.setup_command_buffer = cmds[0]
self.setup_fence = fence
def _setup_sync(self):
_, api, device = self.ctx
fence_info = hvk.fence_create_info()
fence = hvk.create_fence(api, device, fence_info)
self.fence = fence