use power of two size of image

[ASD]

- Guide to faster games with less memory usage
http://community.clickteam.com/showthread.php?t=65324&p=487425&viewfull=1#post487 425

This technique is use for iOS application. However, this theory of use power of two size of image is worth for PC application?

[LB]

If you use HWA then using sprites with sizes that are powers of two does indeed help performance. There should not be much of any effect on Software mode

[ASD]

Thanks LB.
The HWA runtime will lower performance if use the size of image isn't power of two?

[LB]

No, you won't get lower performance than software mode. There will still be a performance gain, though just not nearly as much.

[ASD]

Thanks.

[Fanotherpg]

Thanks LB for info. But the object houkd be power of 2 in both directions equal or can be diffrent? Like 2x2 for platform or 2x256?

Also if I would like to have my character smaller than 64x64 if I make it 60x55 but in sprite size 64x64 would I still gain performance?

[JoKa]

1. They can be different
2. I think you don't need to fit these sizes exactly, it's more about saving resources by carefully planning the dimensions of your objects. For a 60x55 and a 64x64 sprite MMF will need the same amount of memory because both are in the same range of power of two (above 32 and below/equal 64). For a size of 65x64 MMF will need as much memory as for a 128x64 sprite, because the first value is above 64 and the next power of two is 128.

Please correct me if my interpretation is wrong.