Game Development Megathread

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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > Game Development Megathread

Barrackas: Aug 12, 2007

tyrelhill posted:

The hardware usually pads NPOT textures to POT textures anyway, might as well remove that overhead and do it yourself.

I can't remember where I picked this up, but it's in the back of my head somewhere that older cards that don't support with NPOT textures will actually deal with them by breaking the NPOT texture down into the a series of POT textures.

So, for example, 100x100 texture gets broken into 9 POT textures, as follows;

64x64
64x32
64x4
32x64
32x32
32x4
4x64
4x32
4x4

Hence the performance hit related to NPOT texture use. This may just have been something that Java3D did (that was the platform I developed on), before sending textures to the GPU, but it's been over a year since I looked at this so I can't really remember.

Barrackas fucked around with this message at 16:58 on Dec 20, 2007

# ¿ Dec 20, 2007 13:29

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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > Game Development Megathread