def _setup_meshes_resources(self, staging_alloc, staging_buffer,
mesh_buffer_size):
engine, api, device = self.ctx
mem = engine.memory_manager
cmd = engine.setup_command_buffer
# Final buffer allocation
mesh_buffer = hvk.create_buffer(
api, device,
hvk.buffer_create_info(size=mesh_buffer_size,
usage=vk.BUFFER_USAGE_INDEX_BUFFER_BIT
| vk.BUFFER_USAGE_VERTEX_BUFFER_BIT
| vk.BUFFER_USAGE_TRANSFER_DST_BIT))
mesh_alloc = mem.alloc(mesh_buffer,
vk.STRUCTURE_TYPE_BUFFER_CREATE_INFO,
(vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT, ))
# Uploading commands
region = vk.BufferCopy(src_offset=0,
dst_offset=0,
size=mesh_buffer_size)
regions = (region, )
hvk.begin_command_buffer(api, cmd, hvk.command_buffer_begin_info())
hvk.copy_buffer(api, cmd, staging_buffer, mesh_buffer, regions)
hvk.end_command_buffer(api, cmd)
# Submitting
engine.submit_setup_command(wait=True)
return mesh_alloc, mesh_buffer
def mesh_to_device():
global mesh_buffer, mesh_memory, staging_mesh_buffer, staging_mesh_memory, mesh_data
# Create mesh resources
mesh_buffer = hvk.create_buffer(
api, device,
hvk.buffer_create_info(size=total_mesh_size,
usage=vk.BUFFER_USAGE_TRANSFER_DST_BIT
| vk.BUFFER_USAGE_INDEX_BUFFER_BIT
| vk.BUFFER_USAGE_VERTEX_BUFFER_BIT))
mesh_req = hvk.buffer_memory_requirements(api, device, mesh_buffer)
mt_index = find_memory_type(vk.MEMORY_HEAP_DEVICE_LOCAL_BIT,
vk.MEMORY_PROPERTY_DEVICE_LOCAL_BIT)
mesh_memory = hvk.allocate_memory(
api, device,
hvk.memory_allocate_info(allocation_size=mesh_req.size,
memory_type_index=mt_index))
hvk.bind_buffer_memory(api, device, mesh_buffer, mesh_memory, 0)
# Upload mesh to device memory (recording)
hvk.begin_command_buffer(api, staging_cmd, hvk.command_buffer_begin_info())
region = vk.BufferCopy(src_offset=0, dst_offset=0, size=mesh_req.size)
hvk.copy_buffer(api, staging_cmd, staging_mesh_buffer, mesh_buffer,
(region, ))
hvk.end_command_buffer(api, staging_cmd)
# Upload mesh to device memory (submiting)
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, ))
# Free staging resources
hvk.destroy_buffer(api, device, staging_mesh_buffer)
hvk.free_memory(api, device, staging_mesh_memory)
del mesh_data, staging_mesh_buffer, staging_mesh_memory
