Class: Stagecraft::Renderer::PipelineFactory

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

Defined Under Namespace

Classes: MaterialBinding

Constant Summary collapse

ATTRIBUTE_LOCATIONS = 
{
  position: 0, normal: 1, uv: 2, tangent: 3, color: 4, joints: 5, weights: 6,
  uv1: 7
}.freeze
FORMAT_SIZES = 
{
  float32: 4, float32x2: 8, float32x3: 12, float32x4: 16,
  sint8x2: 2, sint8x4: 4, snorm8x2: 2, snorm8x4: 4,
  sint16x2: 4, sint16x4: 8, snorm16x2: 4, snorm16x4: 8,
  uint16: 2, uint16x2: 4, uint16x4: 8,
  unorm16x2: 4, unorm16x4: 8,
  uint32: 4, uint32x2: 8, uint32x3: 12, uint32x4: 16,
  unorm8x2: 2, unorm8x4: 4, uint8x2: 2, uint8x4: 4
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(device:, queue:, resources:, resource_cache:, stats:, sample_count:) ⇒ PipelineFactory

Returns a new instance of PipelineFactory.



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 24

def initialize(device:, queue:, resources:, resource_cache:, stats:, sample_count:)
  @device = device
  @queue = queue
  @resources = resources
  @resource_cache = resource_cache
  @sample_count = sample_count
  @stats = stats
  @cache = PipelineCache.new(on_change: ->(amount) { stats.increment(:pipelines, amount) })
  @material_layouts = {}
  @material_bindings = {}
end

Instance Method Details

#dispose ⇒ Object 



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 125

def dispose
  @cache.clear
  @material_bindings.each_value { |binding| release_material_binding(binding) }
  @material_bindings.clear
  @material_layouts.each_value { |layout| layout.release if layout.respond_to?(:release) }
  @material_layouts.clear
  @post_layout&.release
end

#material_binding(material, features) ⇒ Object 



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 53

def material_binding(material, features)
  signature = material_layout_signature(material)
  key = [material.object_id, signature]
  purge_obsolete_material_bindings(material, key)
  texture_versions = material_texture_versions(material)
  value_signature = material_value_signature(material)
  existing = @material_bindings[key]
  if existing&.owner&.equal?(material) &&
     existing.version == material.version &&
     existing.texture_versions == texture_versions &&
     existing.value_signature == value_signature
    return existing.bind_group
  end

  bytes, textures = material_bytes_and_textures(material)
  if existing&.owner&.equal?(material) &&
     existing.buffer.size == bytes.bytesize &&
     existing.texture_versions == texture_versions
    @queue.write_buffer(existing.buffer, 0, bytes)
    existing.version = material.version
    existing.value_signature = value_signature
    return existing.bind_group
  end

  release_material_binding(existing)
  buffer = @device.create_buffer_with_data(
    label: "stagecraft material",
    data: bytes.empty? ? "\0".b * 16 : bytes,
    usage: %i[uniform copy_dst]
  )
  @stats.increment(:buffers)
  layout = material_layout(material)
  bind_group = @device.create_bind_group(
    layout:,
    entries: material_entries(buffer, textures, material)
  )
  @material_bindings[key] = MaterialBinding.new(
    material, material.version, texture_versions, value_signature,
    buffer, bind_group, signature
  )
  bind_group
end

#pipeline_for(item, shadow: false) ⇒ Object 



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 36

def pipeline_for(item, shadow: false)
  material = item.mesh.material
  layout_signature = material_layout_signature(material)
  key = PipelineCache::Key.new(
    material_class: material_pipeline_signature(material, layout_signature),
    feature_bits: Features.bits(item.features),
    vertex_layout_id: Features.vertex_layout_id(item.mesh.geometry),
    blend_state: material.blend,
    depth_state: [material.depth_test, material.depth_write],
    cull_mode: material.side,
    sample_count: shadow ? 1 : @sample_count,
    color_format: shadow ? :depth32_float : :rgba16_float,
    shadow_pass: shadow
  )
  @cache.fetch(key) { build_pipeline(item, shadow:) }
end

#post_layout ⇒ Object 



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 116

def post_layout
  @post_layout ||= @device.create_bind_group_layout(
    entries: [
      { binding: 0, visibility: :fragment, texture: { sample_type: :float } },
      { binding: 1, visibility: :fragment, sampler: { type: :filtering } }
    ]
  )
end

#post_pipeline(format) ⇒ Object 



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# File 'lib/stagecraft/renderer/pipeline_factory.rb', line 96

def post_pipeline(format)
  defines = format.to_s.end_with?("_srgb") ? Set.new : Set[:ENCODE_SRGB]
  key = [:post, format, defines.hash]
  @cache.fetch(key) do
    shader = @device.create_shader_module(code: Shaders.compose("tonemap.wgsl", defines:))
    layout = @device.create_pipeline_layout(bind_group_layouts: [post_layout])
    @device.create_render_pipeline(
      label: "stagecraft tonemap",
      layout:,
      vertex: { module: shader, entry_point: "vs_main" },
      primitive: { topology: :triangle_list, cull_mode: :none },
      fragment: {
        module: shader,
        entry_point: "fs_main",
        targets: [{ format: }]
      }
    )
  end
end