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plg
02-06-2001, 11:29 AM
Hi there,

I'm experiencing bad performance for texture downloading. I don't know whether this is caused by h/w or s/w.

Can anyone measure download time for a various sizes of textures,
using glTexSubImage2D. Say 1024x768, 720x576, 640x480?

For 720x576 I have noticed times about 40-45 ms with a GeForce2
and 700Mhz Pentium III.

If any Windows-guy could test the same hardware with both OpenGL
and DirectX I would be very thankful.

regards,

Patric

rts
02-08-2001, 11:37 AM
You'll probably be better off if your
texture widths and heights are powers of 2.


Originally posted by plg:
Hi there,

I'm experiencing bad performance for texture downloading. I don't know whether this is caused by h/w or s/w.

Can anyone measure download time for a various sizes of textures,
using glTexSubImage2D. Say 1024x768, 720x576, 640x480?

For 720x576 I have noticed times about 40-45 ms with a GeForce2
and 700Mhz Pentium III.

If any Windows-guy could test the same hardware with both OpenGL
and DirectX I would be very thankful.

regards,

Patric