Anti Alias - Rendertarget

ChrisF

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.

pie

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)

ChrisF

Thanks, by resource heavy do you mean just memory or processing ?

pie

I never investigated that, I'd say both if you call it continuously: otherwise memory because it renders a texture

SinisterSoft

@ChrisF I use rendertarget a lot, no problems with speed here.

ChrisF

@SinisterSoft - thanks, that has reassured me ! - had banked alot on it being efficient :-)

SinisterSoft

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.

antix

I second that. Using RenderTargets for some time without large performance hits.

ChrisF

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 :-)