3D feedback <was 3d member > 2004-03-27 - By NoiseCrime
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-- -- Original Message -- --
From: "noisecrime" <noise@(protected)>
> Unfortunately in all the tests I did, I found actually grabbing the image
> from a w3d member was slower than doing it non-dts via copypixels! Also
> using the openGL rendered performed faster then DX7 (something like 15%).
I was pretty positive when I posted this, but i've just tried converting an
project to test both methods. The project grabbed a 256x256 image to be used
as a texture each frame, and the texture quality was set to #low for a scene
of approx 8000 polygons.
Firstly using member.image where the w3d I was getting the image from wasn't
even on the stage. This being the case you'd expect to get pretty good
performance, yet in reality the results were awful. On my geforce2 ultra
(win98, 256mb ram) it only managed a measly 11 fps in openGL and 4.5 fps in
DX7. On a Radeon9800 (winXP, 1gb ram) it managed a more respectable 33 fps
in openGL, DX7 not tested
Secondly using copypixels, with a non-dts w3d place in the corner of a
800x600 stage. This managed a very respectable 25 fps in openGL and 20 fps
in DX7 on the geforce 2 ultra. Using the radeon9800 it achieved 70 fps in
openGL (DX7 not tested)
So going by these two test machines, copypixels with a non-dts outperforms
member.image by a wide margin
Noisecrime 2004
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