View Full Version : Mip mapping question.

09-03-2002, 09:27 AM
When you use mippmapping. How much MORE space is used per texture? Like if im using a 512*512*32bit texture I am using just about 1.05mb of space on the card. How much more space is used if I Mip Map that image with opengl??

09-03-2002, 09:52 AM
as far as i understand, OpenGL (actually your 3d card) stores all copies of original texture down to 1x1..

if so then the total memory required is:
[sqr(512)+sqr(256)+sqr(128)+...+sqr(4)+sqr(2)+sqr(1 ) ] * 32 bit = ~135% of non-mipmapped texture (more or less).......