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3D Grid blurring

Posted: Sun Jul 01, 2012 10:36 pm
by Arcturus
I have noticed that when a grid-like texture is applied to a plane the lines blur insanely in the distance with visible bands at various intervals. An example can be seen in the PB examples including CameraTrack.pb and ThirdPerson.pb. I would prefer crisp lines rather than burring to nothing, however the only way I have managed to do so is seting the filtering mode to "None" instead of "Bi/Trilinear" which results in poor quality.

I would like to know if there is any way to make these grid patterns look crisp and not so blurred in the distance.

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 12:53 am
by Zach
Anti-Aliasing and Anisotropic Filtering ?

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 2:42 am
by Arcturus
I've tried changing the Anti-Aliasing settings, but it makes no difference. Can you tell me more about anisotropic filtering?

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 3:31 am
by IdeasVacuum
Can you tell me more about anisotropic filtering?
..... it's a difficult word to pronounce :mrgreen: (sorry, couldn't resist)

anisotropic filtering

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 1:25 pm
by Arcturus
I should have worded that better :P

What I meant to ask, is if it can be done in Ogre (and if so, some advice on how to do so)

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 2:20 pm
by Zach
I honestly don't know anything about Ogre, nor especially the version used by PB.
Sorry.

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 4:35 pm
by Comtois
You can use a script material

Code: Select all

material Examples/anisotropic
{
	technique
	{
		pass
		{
			texture_unit
			{
				texture drawline.png
				max_anisotropy 8
				filtering anisotropic

			}
		}
	}
}

Re: 3D Grid blurring

Posted: Mon Jul 02, 2012 10:39 pm
by Arcturus
Comtois wrote:You can use a script material
Thanks, I'll do a bit of research on this and test it out.

Re: 3D Grid blurring

Posted: Tue Jul 03, 2012 7:55 am
by Comtois
here are my modification in CameraTrack.pb

Code: Select all

    Add3DArchive("Data/textures"        , #PB_3DArchive_FileSystem)
    Add3DArchive("Data/models"          , #PB_3DArchive_FileSystem)
    Add3DArchive("Data/GUI"             , #PB_3DArchive_FileSystem)
    Add3DArchive("Data/Scripts"         , #PB_3DArchive_FileSystem)
    Add3DArchive("Data/Packs/desert.zip", #PB_3DArchive_Zip)
    Parse3DScripts()
    
    WorldShadows(#PB_Shadow_Modulative)
    
    CreateImage(1, 256, 256)
    StartDrawing(ImageOutput(1))
    Box(0, 0, 256, 256, $002255)
    DrawingMode(#PB_2DDrawing_Outlined)
    Box(0, 0, 256, 256, $FFFFFF)
    Box(10, 10, 236, 236, $FFFF)
    StopDrawing()
    UsePNGImageEncoder()
    SaveImage(1, "Data/textures/drawline.png",  #PB_ImagePlugin_PNG) 
    
    CreateMaterial(0, LoadTexture(0, "r2skin.jpg"))
    GetScriptMaterial(1, "Examples/anisotropic")

    ;robot
And then you copy the script material in the file 'examples.material' or create a new file (folder Data/Scripts)