Class: Mittsu::OpenGLGeometry

Inherits:
Object
  • Object
show all
Includes:
OpenGLGeometryLike
Defined in:
lib/mittsu/renderers/opengl/core/opengl_geometry.rb

Constant Summary

Constants included from OpenGLGeometryLike

Mittsu::OpenGLGeometryLike::CONST_BUFFER_NAMES

Instance Attribute Summary collapse

Attributes included from OpenGLGeometryLike

#custom_attributes_list, #face_count, #faces3, #initted_arrays, #line_count, #morph_normals_arrays, #morph_normals_buffers, #morph_targets_arrays, #morph_targets_buffers, #num_morph_normals, #num_morph_targets, #num_vertices, #type_array, #vertex_array_object

Instance Method Summary collapse

Methods included from OpenGLGeometryLike

#bind_vertex_array_object, #update_other_buffers, #update_vertex_buffer

Constructor Details

#initialize(geometry, renderer) ⇒ OpenGLGeometry

Returns a new instance of OpenGLGeometry.



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 10

def initialize(geometry, renderer)
  @id = (@@id ||= 1).tap { @@id += 1 }

  @geometry = geometry
  @renderer = renderer
end

Instance Attribute Details

#groups ⇒ Object

Returns the value of attribute groups.



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 7

def groups
  @groups
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 8

def id
  @id
end

#initted ⇒ Object

Returns the value of attribute initted.



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 7

def initted
  @initted
end

Instance Method Details

#create_line_buffers ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 71

def create_line_buffers
  @vertex_array_object = glCreateVertexArray

  @vertex_buffer = glCreateBuffer
  @color_buffer = glCreateBuffer
  @line_distance_buffer = glCreateBuffer

  @renderer.info[:memory][:geometries] += 1
end

#init_geometry_groups(object) ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 17

def init_geometry_groups(object)
  object_impl = object.implementation(@renderer)
  material = object.material
  add_buffers = false

  if @groups.nil? || @geometry.groups_need_update
    @renderer.remove_opengl_object(object)

    @groups = make_groups(material.is_a?(MeshFaceMaterial))

    @geometry.groups_need_update = false
  end

  # create separate VBOs per geometry chunk

  @groups.each do |geometry_group|
    # initialize VBO on the first access
    if geometry_group.vertex_buffer.nil?
      geometry_group.create_mesh_buffers
      geometry_group.init_mesh_buffers(object)

      @geometry.vertices_need_update = true
      @geometry.morph_targets_need_update = true
      @geometry.elements_need_update = true
      @geometry.uvs_need_update = true
      @geometry.normals_need_update = true
      @geometry.tangents_need_update = true
      @geometry.colors_need_update = true

		add_buffers = true
    else
      add_buffers = false
    end

    if add_buffers || !object_impl.active?
      @renderer.add_opengl_object(geometry_group, object)
    end
  end

  object_impl.active = true
end

#init_line_buffers(object) ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 59

def init_line_buffers(object)
  nvertices = @geometry.vertices.length

  @vertex_array = Array.new(nvertices * 3, 0.0) # Float32Array
  @color_array = Array.new(nvertices * 3, 0.0) # Float32Array
  @line_distance_array = Array.new(nvertices, 0.0) # Float32Array

  @line_count = nvertices

  init_custom_attributes(object)
end

#set_line_buffers(hint) ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/core/opengl_geometry.rb', line 81

def set_line_buffers(hint)
  if @geometry.vertices_need_update
    @geometry.vertices.each_with_index do |vertex, v|
      offset = v * 3

      @vertex_array[offset]     = vertex.x
      @vertex_array[offset + 1] = vertex.y
      @vertex_array[offset + 2] = vertex.z
    end

    glBindBuffer(GL_ARRAY_BUFFER, @vertex_buffer)
    glBufferData_easy(GL_ARRAY_BUFFER, @vertex_array, hint)
  end

  if @geometry.colors_need_update
    @geometry.colors.each_with_index do |color, c|
      offset = c * 3

      @color_array[offset]     = color.r
      @color_array[offset + 1] = color.g
      @color_array[offset + 2] = color.b
    end

    glBindBuffer(GL_ARRAY_BUFFER, @color_buffer)
    glBufferData_easy(GL_ARRAY_BUFFER, @color_array, hint)
  end

  if @geometry.line_distances_need_update
    @geometry.line_distances.each_with_index do |l, d|
      @line_distance_array[d] = l
    end

    glBindBuffer(GL_ARRAY_BUFFER, @line_distance_buffer)
    glBufferData_easy(GL_ARRAY_BUFFER, @line_distance_array, hint)
  end

  if @custom_attributes
    @custom_attributes.each do |custom_attribute|
      offset = 0

      values = custom_attribute.value

      case custom_attribute.size
      when 1
        value.each_with_index do |value, ca|
          custom_attribute.array[ca] = value
        end
      when 2
        values.each_with_index do |value, ca|
          custom_attribute[offset    ] = value.x
          custom_attribute[offset + 1] = value.y

          offset += 2
        end
      when 3
        if custom_attribute.type === :c
          values.each_with_index do |value, ca|
            custom_attribute[offset    ] = value.r
            custom_attribute[offset + 1] = value.g
            custom_attribute[offset + 2] = value.b

            offset += 3
          end
        else
          values.each_with_index do |value, ca|
            custom_attribute[offset    ] = value.x
            custom_attribute[offset + 1] = value.y
            custom_attribute[offset + 2] = value.z

            offset += 3
          end
        end
      when 4
        values.each_with_index do |value, ca|
          custom_attribute[offset    ] = value.x
          custom_attribute[offset + 1] = value.y
          custom_attribute[offset + 2] = value.z
          custom_attribute[offset + 3] = value.w

          offset += 4
        end
      end

      glBindBuffer(GL_ARRAY_BUFFER, custom_attribute.buffer)
      glBufferData_easy(GL_ARRAY_BUFFER, custom_attribute.array, hint)

      custom_attribute.needs_update = false
    end
  end
end