Why smoothing doesn't work?

Comments

• jim

  September 2013 edited September 2013

  Can you please post a screenshot of what your are getting ?
• iarwain

  September 2013 edited September 2013

  If you append this to the end of 01_Object.ini, you should be able to compare them side by side (and press space to take a screenshot):

  [MainInput]
  KEY_SPACE = Screenshot
  
  [Screenshot]
  Extension = png
  
  [Object]
  Graphic   =
  ChildList = O1 # O2 # T1 # T2
  TrackList = T
  
  [T]
  0         = > Input.IsActive Screenshot # EvalIf < "Screenshot.Capture"
  Loop      = true
  
  [O1]
  Graphic         = Graphic
  Smoothing       = true
  Position        = (-200, 0, 0)
  AngularVelocity = 90
  Scale           = 1.5
  
  [O2@O1]
  Smoothing       = false
  Position        = (200, 0, 0)
  
  [T1]
  Graphic         = @
  Pivot           = center top
  Text            = @
  String          = Smoothing = true
  Position        = (-200, 200, 0)
  
  [T2@T1]
  String          = Smoothing = false
  Position        = (200, 200, 0)
  
• nowolfer

  September 2013 edited September 2013

  ; orx - Tutorial config file
  ; Should be used with orx v.1.4+
  
  [Display]
  ;ScreenWidth = 1366
  ;ScreenHeight = 768
  ScreenWidth = 800
  ScreenHeight = 600
  Title = SharpDawn
  ;FullScreen =true
  ;Smoothing =true
  ;DepthBuffer =true
  
  [Input]
  SetList = MainInput
  
  [MainInput]
  KEY_ESCAPE = Quit
  KEY_SPACE = Screenshot
  
  [Render]
  ;nFrequency = <float>
  ShowFPS = true
  ;ShowProfiler = true
  ;onsoleColor = <vector>
  
  [Viewport]
  Camera = Camera
  ;RelativePosition = bottom right
  ;Position = (100, 100, 0); NB: Position is in pixels and will be ignored if RelativePosition is specified
  ;RelativeSize = (0.5, 0.5, 0.0)
  ;Size = (200, 150, 0) NB: Size is in pixels and will be ignored if RelativeSize is specified
  ;BackgroundColor = (255, 180, 0)
  
  [Camera]
  ; We use the same size for the camera than our display on screen so as to obtain a 1:1 ratio
  FrustumWidth = @Display.ScreenWidth
  FrustumHeight = @Display.ScreenHeight
  ;FrustumWidth = 2000
  ;FrustumHeight = 300
  FrustumFar = 1.0
  FrustumNear = 0.0
  Position = (0.0, 0.0, -1.0)
  ;Zoom = 0.9
  ;Rotation = 35
  
  [Object]
  Graphic = Graphic
  ;AutoScroll = x
  ;Color = (255, 0, 200)
  ;Alpha = 0.4
  ;Flip = both
  ;Position = (100.0, 200.0, 0.0)
  Rotation = 30
  ;Scale = (3.0, 1.0, 1.0) NB: z is ignored for 2D objects
  ;Smoothing = true
  ;BlendMode = add
  ;AngularVelocity = 1800
  Speed = (0, 0, 0)
  TrackList = T
  
  
  [Text]
  String = Why should we use a texture when we can use a text?!
  
  [Graphic]
  Texture = ../data/object/bg.jpg
  ;Text = Text; <= If you want to see the text, you need to comment out the texture
  Pivot = center
  ;TextureCorner = (50, 20, 0) NB: z is ignored
  ;TextureSize = (50, 80, 0) NB: z is ignored
  ;Repeat = (3.0, 2.0, 0.0)
  ;Flip = both
  ;Color = (0, 0, 255)
  ;Alpha = 0.6
  Smoothing = true
  
  [Screenshot]
  Extension = png
  
  
  [T]
  0 = > Input.IsActive Screenshot # EvalIf < "Screenshot.Capture"
  Loop = true

  screenshot_0001-00e848453661b696915797d16ca6d53e 531.5K
• nowolfer

  September 2013 edited September 2013

  This is what i play with the tutorial, when rotate the edge of the picture seems no smooth as expect with wrong config?
• jim

  September 2013 edited September 2013

  That's very known issue while rotating square texture with no alpha border, try to insert a border of alpha pixel or transparent pixel in your image using photoshop or gimp. This would smoothen the edge a lot. So if you image size is 16x16, make it 17x17 with transparent pixel around the border.
  
  edit : 17x17 wont work for 16x16 image, you need 18x18, 1 pixel on each side of your image
• iarwain

  September 2013 edited September 2013

  Ah I see from where the confusion is coming.
  The smoothing attribute corresponds to texture filtering (ie. hardware interpolation done inside the texture surface while sampling), not to anti-aliasing.
  
  You can use Jim's trick in order to get less rough edges (ie. having filtering on those extra rows of pixels) or you can integrate any anti-aliasing technique that would work for you, such as FXAA (which is a post-processing shader).