Quote: I am confuse on texture memory conservation is it the file size of texture matter or the texture size itself...take a look here
It is not the file size of the texture itself. The same pixel sized image saved as a BMP, PCX and TGA will all be different sizes as far as file size is concerned (i.e. Kb). All three textures will consume the same amount of video memory, though. The texture will go through a conversion process so once the texture hits the video card it is not a BMP, PCX or TGA anymore. It is simply a (insert pixel size here) image and that is all.
I hope that helps a little.
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