Class: Stagecraft::Renderer::GPUContext

Inherits:
Object
  • Object
show all
Defined in:
lib/stagecraft/renderer/gpu_context.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(window: nil, width:, height:, device: nil, queue: nil, surface: nil) ⇒ GPUContext

Returns a new instance of GPUContext.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 8

def initialize(window: nil, width:, height:, device: nil, queue: nil, surface: nil)
  WGPUCompatibility.install!
  @window = window
  @width = Integer(width)
  @height = Integer(height)
  @owns_device = device.nil?
  @disposed = false
  if device
    @device = device
    @queue = queue || device.queue
    @surface = surface
    @adapter = device.respond_to?(:adapter) ? device.adapter : nil
  else
    initialize_wgpu
  end
  @surface_format = choose_surface_format
  configure_surface if @surface
rescue StandardError
  dispose_after_failed_initialization
  raise
end

Instance Attribute Details

#adapter ⇒ Object (readonly)

Returns the value of attribute adapter.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def adapter
  @adapter
end

#device ⇒ Object (readonly)

Returns the value of attribute device.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def device
  @device
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def height
  @height
end

#instance ⇒ Object (readonly)

Returns the value of attribute instance.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def instance
  @instance
end

#queue ⇒ Object (readonly)

Returns the value of attribute queue.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def queue
  @queue
end

#surface ⇒ Object (readonly)

Returns the value of attribute surface.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def surface
  @surface
end

#surface_format ⇒ Object (readonly)

Returns the value of attribute surface_format.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def surface_format
  @surface_format
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 6

def width
  @width
end

Instance Method Details

#current_target ⇒ Object

Raises:



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 41

def current_target
  raise Error, "renderer has no surface" unless surface

  texture = surface.current_texture
  [texture, texture.create_view]
end

#dispose ⇒ Object 



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 52

def dispose
  return self if @disposed

  @disposed = true
  cleanups = [
    -> { surface&.unconfigure },
    -> { surface&.release }
  ]
  if @owns_device
    cleanups.concat(
      [
        -> { device.destroy if device.respond_to?(:destroy) },
        -> { device.release if device.respond_to?(:release) },
        -> { adapter.release if adapter&.respond_to?(:release) },
        -> { instance.release if instance&.respond_to?(:release) }
      ]
    )
  end
  first_error = nil
  cleanups.each do |cleanup|
    cleanup.call
  rescue StandardError => error
    first_error ||= error
  end
  raise first_error if first_error

  self
end

#present ⇒ Object 



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 48

def present
  surface&.present
end

#resize(width, height) ⇒ Object 



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# File 'lib/stagecraft/renderer/gpu_context.rb', line 30

def resize(width, height)
  next_width = [Integer(width), 1].max
  next_height = [Integer(height), 1].max
  return false if next_width == @width && next_height == @height

  @width = next_width
  @height = next_height
  configure_surface if surface
  true
end