Class: Mittsu::CubeTexture

Inherits:
Texture
  • Object
show all
Defined in:
lib/mittsu/textures/cube_texture.rb,
lib/mittsu/renderers/opengl/textures/cube_texture.rb

Constant Summary

Constants inherited from Texture

Texture::DEFAULT_IMAGE, Texture::DEFAULT_MAPPING

Instance Attribute Summary collapse

Attributes inherited from Texture

#anisotropy, #filp_y, #format, #generate_mipmaps, #id, #image, #mag_filter, #mapping, #min_filter, #mipmaps, #name, #offset, #on_update, #opengl_texture, #premultiply_alpha, #repeat, #source_file, #type, #unpack_alignment, #uuid, #wrap_s, #wrap_t

Instance Method Summary collapse

Methods inherited from Texture

#dispose, #needs_update=, #needs_update?, #update, #update_opengl

Methods included from EventDispatcher

#add_event_listener, #dispatch_event, #has_event_listener, #remove_event_listener

Constructor Details

#initialize(images = nil, mapping = DEFAULT_MAPPING, wrap_s = ClampToEdgeWrapping, wrap_t = ClampToEdgeWrapping, mag_filter = LinearFilter, min_filter = LinearMipMapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1) ⇒ CubeTexture

Returns a new instance of CubeTexture.



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# File 'lib/mittsu/textures/cube_texture.rb', line 7

def initialize(images = nil, mapping = DEFAULT_MAPPING, wrap_s = ClampToEdgeWrapping, wrap_t = ClampToEdgeWrapping, mag_filter = LinearFilter, min_filter = LinearMipMapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = 1)
  super(images, mapping, wrap_s, wrap_t, mag_filter, min_filter, format, type, anisotropy)

  @images = images
end

Instance Attribute Details

#images ⇒ Object

Returns the value of attribute images.



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# File 'lib/mittsu/textures/cube_texture.rb', line 5

def images
  @images
end

Instance Method Details

#clone(texture = CubeTexture.new) ⇒ Object 



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# File 'lib/mittsu/textures/cube_texture.rb', line 13

def clone(texture = CubeTexture.new)
  super(texture)
  texture.images = @images
  texture
end

#set(slot, renderer) ⇒ Object 



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# File 'lib/mittsu/renderers/opengl/textures/cube_texture.rb', line 3

def set(slot, renderer)
  @renderer = renderer

  if image.length == 6
    if needs_update?
      if !image[:_opengl_texture_cube]
        add_event_listener(:dispose, @renderer.method(:on_texture_dispose))
        image[:_opengl_texture_cube] = glCreateTexture
        @renderer.info[:memory][:textures] += 1
      end

      glActiveTexture(GL_TEXTURE0 + slot)
      glBindTexture(GL_TEXTURE_CUBE_MAP, image[:_opengl_texture_cube])

      # glPixelStorei(GL_UNPACK_FLIP_Y_WEBGL, texture.flip_y)

      is_compressed = is_a?(CompressedTexture)
      is_data_texture = image[0].is_a?(DataTexture)

      cube_image = [];

      6.times do |i|
        if @auto_scale_cubemaps && !is_compressed && !is_data_texture
          cube_image[i] = clamp_to_max_size(image[i], @_max_cubemap_size)
        else
          cube_image[i] = is_data_texture ? image[i].image : image[i];
        end
      end

      img = cube_image[0]
      is_image_power_of_two = Math.power_of_two?(img.width) && Math.power_of_two?(img.height)
      gl_format = GL_MITTSU_PARAMS[format]
      gl_type = GL_MITTSU_PARAMS[type]

      set_parameters(GL_TEXTURE_CUBE_MAP, is_image_power_of_two)

      6.times do |i|
        if !is_compressed
          if is_data_texture
            glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, gl_format, cube_image[i].width, cube_image[i].height, 0, gl_format, gl_type, cube_image[i].data)
          else
            glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, gl_format, cube_image[i].width, cube_image[i].height, 0, gl_format, gl_type, cube_image[i].data)
          end
        else
          mipmaps = cube_image[i].mipmaps

          mipmaps.each_with_index do |mipmap, j|
            if format != RGBAFormat && format != RGBFormat
              if @renderer.compressed_texture_formats.include?(gl_format)
                glCompressedTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, j, gl_format, mipmap.width, mipmap.height, 0, mipmap.data)
              else
                puts "WARNING: Mittsu::OpenGLCubeTexture: Attempt to load unsupported compressed texture format in #set"
              end
            else
              glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, j, gl_format, mipmap.width, mipmap.height, 0, gl_format, gl_type, mipmap.data)
            end
          end
        end
      end

      if generate_mipmaps && is_image_power_of_two
        glGenerateMipmap(GL_TEXTURE_CUBE_MAP)
      end

      self.needs_update = false

      on_update.call if on_update
    else
      glActiveTexture(GL_TEXTURE0 + slot)
      glBindTexture(GL_TEXTURE_CUBE_MAP, image[:_opengl_texture_cube])
    end
  end
end