Class: WGPU::Queue

Inherits:
Object
  • Object
show all
Includes:
NativeResource
Defined in:
lib/wgpu/core/queue.rb,
sig/wgpu.rbs

Constant Summary

Constants included from NativeResource

NativeResource::GUARDED_METHOD_EXEMPTIONS

Instance Attribute Summary collapse

Attributes included from NativeResource

#label

Instance Method Summary collapse

Methods included from NativeResource

checked_handle, included, #inspect, #released?, #use

Constructor Details

#initialize(handle, device: nil) ⇒ Queue

Wraps a device's native submission queue.

Parameters:

  • handle (FFI::Pointer) —

    native queue handle

  • device (Device, nil) (defaults to: nil) —

    owning device



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# File 'lib/wgpu/core/queue.rb', line 10

def initialize(handle, device: nil)
  @handle = handle
  @device = device
end

Instance Attribute Details

#handle ⇒ Object (readonly)

Returns the value of attribute handle.

Returns:

  • (Object) 


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# File 'lib/wgpu/core/queue.rb', line 5

def handle
  @handle
end

Instance Method Details

#on_submitted_work_done(device: nil, timeout: nil) ⇒ Symbol

Waits until all previously submitted queue work completes.

Parameters:

  • device (Device, nil) (defaults to: nil) —

    device used to drive callback progress

  • timeout (Numeric, nil) (defaults to: nil) —

    maximum wait time in seconds

  • device: (Device, nil) (defaults to: nil)
  • timeout: (Numeric, nil) (defaults to: nil)

Returns:

  • (Symbol) —

    native completion status



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# File 'lib/wgpu/core/queue.rb', line 200

def on_submitted_work_done(device: nil, timeout: nil)
  timeout = AsyncWaiter.normalize_timeout(timeout)
  device ||= @device
  instance = device&.adapter&.instance
  status_holder = { done: false, status: nil }

  callback_lifetime_release = device_callback_lifetime_lease
  callback_token = nil
  callback = FFI::Function.new(
    :void, [:uint32, :pointer, :pointer]
  ) do |status, _userdata1, _userdata2|
    begin
      status_holder[:status] = Native::QueueWorkDoneStatus[status]
      status_holder[:done] = true
    ensure
      CallbackKeepalive.release(self, callback_token)
      callback_lifetime_release.call
    end
  end

  callback_info = Native::QueueWorkDoneCallbackInfo.new
  callback_info[:next_in_chain] = nil
  callback_info[:mode] = AsyncWaiter.callback_mode(instance: instance)
  callback_info[:callback] = callback
  callback_info[:userdata1] = nil
  callback_info[:userdata2] = nil

  callback_token = CallbackKeepalive.retain(self, callback)
  future =
    begin
      Native.wgpuQueueOnSubmittedWorkDone(@handle, callback_info)
    rescue StandardError
      CallbackKeepalive.release(self, callback_token)
      callback_lifetime_release.call
      raise
    end
  AsyncWaiter.wait(
    status_holder: status_holder,
    instance: instance,
    device: device,
    future: future,
    timeout: timeout
  )

  status_holder[:status]
end

#on_submitted_work_done_async(device: nil, timeout: nil) ⇒ AsyncTask

Waits for prior queue work on a background task.

Parameters:

  • device: (Device, nil) (defaults to: nil)
  • timeout: (Numeric, nil) (defaults to: nil)

Returns:

  • (AsyncTask) —

    task yielding the native completion status



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# File 'lib/wgpu/core/queue.rb', line 249

def on_submitted_work_done_async(device: nil, timeout: nil)
  AsyncTask.new do
    on_submitted_work_done(device: device, timeout: timeout)
  end
end

#read_buffer(buffer, offset: 0, size: nil, device: nil, staging: nil) ⇒ String

Copies a GPU buffer to mapped staging memory and returns its bytes.

Parameters:

  • buffer (Buffer) —

    source buffer

  • staging (Buffer, nil) (defaults to: nil) —

    reusable map-read staging buffer

  • (Buffer)
  • offset: (Integer) (defaults to: 0)
  • size: (Integer, nil) (defaults to: nil)
  • device: (Device, nil) (defaults to: nil)
  • staging: (Buffer, nil) (defaults to: nil)

Returns:

  • (String) —

    copied bytes



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# File 'lib/wgpu/core/queue.rb', line 99

def read_buffer(buffer, offset: 0, size: nil, device: nil, staging: nil)
  device ||= @device
  raise ArgumentError, "device is required when the queue has no owning device" unless device

  size ||= buffer.size - offset
  owns_staging = staging.nil?
  staging ||= Buffer.new(device, size: size, usage: [:map_read, :copy_dst])
  validate_readback_staging!(staging, size)
  encoder = CommandEncoder.new(device)
  encoder.copy_buffer_to_buffer(
    source: buffer,
    source_offset: offset,
    destination: staging,
    destination_offset: 0,
    size: size
  )
  command_buffer = encoder.finish
  submit([command_buffer])

  map_requested = true
  staging.map_sync(:read)
  staging.read_mapped_data(size:)
ensure
  cleanup_readback_resources(
    staging:,
    unmap_staging: map_requested,
    owns_staging:,
    command_buffer:,
    encoder:,
    active_error: $!
  )
end

#read_texture(source:, data_layout:, size:, device:, staging:) ⇒ String #read_texture(arg0) ⇒ String

Copies a texture region to mapped staging memory and returns its padded bytes.

Overloads:

  • #read_texture(source:, data_layout:, size:, device:, staging:) ⇒ String

    Parameters:

    • source: (texture_copy)
    • data_layout: (texture_data_layout)
    • size: (extent_3d)
    • device: (Device, nil)
    • staging: (Buffer, nil)

    Returns:

    • (String)
  • #read_texture(arg0) ⇒ String

    Parameters:

    • arg0 (Object)

    Returns:

    • (String)

Parameters:

  • source (Hash) —

    source texture, origin, aspect, and optional format

  • data_layout (Hash) —

    destination byte layout

  • size (Hash, Array) —

    extent to read

  • staging (Buffer, nil) (defaults to: nil) —

    reusable map-read staging buffer

Returns:

  • (String) —

    copied bytes



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# File 'lib/wgpu/core/queue.rb', line 138

def read_texture(source:, data_layout:, size:, device: nil, staging: nil)
  device ||= @device
  raise ArgumentError, "device is required when the queue has no owning device" unless device

  extent = DescriptorHelpers.extent_3d(size)
  width, height, depth = extent.values
  bytes_per_row = data_layout[:bytes_per_row]
  raise ArgumentError, "data_layout[:bytes_per_row] is required" unless bytes_per_row

  DataTypes.validate_alignment!(
    bytes_per_row,
    TextureFormat::COPY_ALIGNMENT,
    name: "bytes_per_row"
  )
  format = source[:format] || source[:texture].format
  aspect = source[:aspect] || :all
  tight_bytes_per_row = TextureFormat.bytes_per_row(width, format, aspect:)
  minimum_bytes_per_row = TextureFormat.aligned_bytes_per_row(width, format, aspect:)
  if bytes_per_row < minimum_bytes_per_row
    raise ArgumentError,
      "bytes_per_row must be at least #{minimum_bytes_per_row} for width #{width} and #{format.inspect} " \
      "(tight row is #{tight_bytes_per_row} bytes)"
  end

  rows_per_image = data_layout[:rows_per_image] || height
  buffer_size = bytes_per_row * rows_per_image * depth

  owns_staging = staging.nil?
  staging ||= Buffer.new(device, size: buffer_size, usage: [:map_read, :copy_dst])
  validate_readback_staging!(staging, buffer_size)
  encoder = CommandEncoder.new(device)
  encoder.copy_texture_to_buffer(
    source: source,
    destination: {
      buffer: staging,
      offset: 0,
      bytes_per_row: bytes_per_row,
      rows_per_image: rows_per_image
    },
    copy_size: size
  )
  command_buffer = encoder.finish
  submit([command_buffer])

  map_requested = true
  staging.map_sync(:read)
  staging.read_mapped_data(size: buffer_size)
ensure
  cleanup_readback_resources(
    staging:,
    unmap_staging: map_requested,
    owns_staging:,
    command_buffer:,
    encoder:,
    active_error: $!
  )
end

#release ⇒ void

This method returns an undefined value.

Releases the native queue handle.

Calling this method more than once has no effect.



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# File 'lib/wgpu/core/queue.rb', line 259

def release
  return if @handle.null?
  Native.wgpuQueueRelease(@handle)
  @handle = FFI::Pointer::NULL
end

#submit(command_buffers) ⇒ void

This method returns an undefined value.

Submits command buffers exactly once in the supplied order.

Parameters:

Raises:

  • (CommandError) —

    for duplicate or previously submitted buffers



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# File 'lib/wgpu/core/queue.rb', line 19

def submit(command_buffers)
  buffers = Array(command_buffers)
  return if buffers.empty?

  if buffers.map(&:object_id).uniq.length != buffers.length
    raise CommandError, "The same command buffer cannot appear twice in one submission"
  end
  buffers.each do |buffer|
    raise CommandError, "Command buffer has already been submitted" if buffer.submitted?
  end

  handles = buffers.map { |buffer| NativeResource.checked_handle(buffer, expected_class: CommandBuffer) }
  ptr = FFI::MemoryPointer.new(:pointer, handles.size)
  ptr.write_array_of_pointer(handles)

  Native.wgpuQueueSubmit(@handle, handles.size, ptr)
  buffers.each(&:mark_submitted!)
end

#write_buffer(buffer, buffer_offset, data, data_offset: 0, size: nil, type: :f32) ⇒ void

This method returns an undefined value.

Writes typed data into a GPU buffer.

Parameters:

  • buffer (Buffer) —

    destination buffer

  • buffer_offset (Integer) —

    destination byte offset

  • data (Array, String, FFI::Pointer) —

    source data

  • (Buffer)
  • (Integer)
  • (data)
  • data_offset: (Integer) (defaults to: 0)
  • size: (Integer, nil) (defaults to: nil)
  • type: (Symbol) (defaults to: :f32)

Raises:

  • (ArgumentError) 


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# File 'lib/wgpu/core/queue.rb', line 43

def write_buffer(buffer, buffer_offset, data, data_offset: 0, size: nil, type: :f32)
  data_ptr, byte_size = DataTypes.to_pointer(data, type:)
  DataTypes.validate_alignment!(buffer_offset, 4, name: "buffer_offset")
  data_offset = Integer(data_offset)
  raise ArgumentError, "data_offset must be non-negative" if data_offset.negative?
  raise ArgumentError, "data_offset out of range" if data_offset > byte_size

  write_size = size.nil? ? (byte_size - data_offset) : Integer(size)
  raise ArgumentError, "size must be non-negative" if write_size.negative?
  raise ArgumentError, "data_offset + size out of range" if data_offset + write_size > byte_size
  DataTypes.validate_alignment!(write_size, 4, name: "size")

  Native.wgpuQueueWriteBuffer(
    @handle,
    NativeResource.checked_handle(buffer, expected_class: Buffer),
    buffer_offset,
    data_ptr + data_offset,
    write_size
  )
end

#write_texture(destination:, data:, data_layout:, size:, type: :f32) ⇒ void

This method returns an undefined value.

Writes typed data into a texture region.

Parameters:

  • destination (Hash) —

    destination texture and origin

  • data (Array, String, FFI::Pointer) —

    source data

  • data_layout (Hash) —

    source byte layout

  • size (Hash, Array) —

    extent to write

  • (Object) 


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# File 'lib/wgpu/core/queue.rb', line 70

def write_texture(destination:, data:, data_layout:, size:, type: :f32)
  data_ptr, byte_size = DataTypes.to_pointer(data, type:)

  dst = Native::ImageCopyTexture.new
  dst[:texture] = NativeResource.checked_handle(destination[:texture], expected_class: Texture)
  dst[:mip_level] = destination[:mip_level] || 0
  dst[:origin][:x] = destination.dig(:origin, :x) || 0
  dst[:origin][:y] = destination.dig(:origin, :y) || 0
  dst[:origin][:z] = destination.dig(:origin, :z) || 0
  dst[:aspect] = Native::EnumHelper.coerce(
    Native::TextureAspect,
    destination[:aspect] || :all,
    name: "texture aspect"
  )

  extent = DescriptorHelpers.extent_3d(size)

  layout = Native::TextureDataLayout.new
  layout[:offset] = data_layout[:offset] || 0
  layout[:bytes_per_row] = data_layout[:bytes_per_row]
  layout[:rows_per_image] = data_layout[:rows_per_image] || extent[:height]

  Native.wgpuQueueWriteTexture(@handle, dst, data_ptr, byte_size, layout, extent)
end