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Anti Alias - Rendertarget — Gideros Forum
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    Anti Alias - Rendertarget

    ChrisFChrisF Member
    edited February 2016 in General questions
    After putting out my first couple of crappy casino games to get a feel for Gideros I have started work on something more meaty.

    On one of the layers there is alot changing per frame so I thought a Rendertarget as that layer would be better for a quick clear, the layer is a mixture of Matrix renders and Sprites.
    However I am noticing there appears to be no anti-aliasing in a Rendertarget.

    So question is two fold.
    1) Did I choose the right thing or should I just do a Sprite layer with a clear routine ?
    2) If Rendertarget was correct how can I get anti aliasing.
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    Comments

    • piepie Member
      Hi @ChrisF
      renderTarget is a heavy process, but it may be the only way to achieve some effects. Its resource consumption is related to the size of the area you render - for a "fog of war effect" I render a scaled down portion of screen and then scale it up to fill my screen, but it's not always an option (it depends on what you need to do :) ).

      To enable anti-alias I think it should be enough to append "true" when you create it:
      local rt = RenderTarget.new (sizeW, sizeH, true)
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    • ChrisFChrisF Member
      Thanks, by resource heavy do you mean just memory or processing ?
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    • piepie Member
      I never investigated that, I'd say both if you call it continuously: otherwise memory because it renders a texture :)
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    • SinisterSoftSinisterSoft Maintainer
      @ChrisF I use rendertarget a lot, no problems with speed here.

      Likes: antix

      Coder, video game industry veteran (since the '80s, ❤'s assembler), arrested - never convicted hacker (in the '90s), dad of five, he/him (if that even matters!).
      https://deluxepixel.com
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    • ChrisFChrisF Member
      @SinisterSoft - thanks, that has reassured me ! - had banked alot on it being efficient :-)

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    • SinisterSoftSinisterSoft Maintainer
      edited February 2016
      It may depend on the device, but in reality you are always rendering on a 'texture' - a texture is just a block of video memory - so the actual 'stage' should be the same - this is then rendered again by the OS layering system.
      Coder, video game industry veteran (since the '80s, ❤'s assembler), arrested - never convicted hacker (in the '90s), dad of five, he/him (if that even matters!).
      https://deluxepixel.com
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    • antixantix Member
      I second that. Using RenderTargets for some time without large performance hits.
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    • ChrisFChrisF Member
      Thanks for reassurance, it's kinda what I thought but without knowing the pipeline etc. behind the scenes you can never be sure. Oh I miss the days of a good pixel plotting routine :-)

      Likes: antix, SinisterSoft

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