What you miss with q3map2's `-fast` switch

Differences between -fast and non--fast
Mode time (secs) time (percent) Bounces Image
-dirty -fast 137 2.919 38 dirty, fast
-dirty –-fast-- 480 10.226 53 dirty, nonfast
-fast 332 7.073 89 fast, nondirty
---fast-- 4694 100 492 nondirty, nonfast
Compile options
-light -samples 3 -bounce 9999 -bouncescale 3.255 -gamma 2 -compensate 4 -patchshadows -v -skyfix.
Compile machine
P4 2.4GHz 800mhz fsb, 1GB RAM

Hrm, -dirty seems to have a heavy influence on bounces :o. I tweaked the -bouncescale with a -dirty compile, thus the non-dirty compiles are overblown a bit – probably raising the number of bounces quite a lot. I will try to get a nice -bouncescale value for non-dirty compiles when I find time.

Difference between the two -dirty images

Difference between the two –-dirty– images

Ignore the white lines at the edges of polygons, they're caused by the merge of non-pixel-perfect images. The noise is caused by JPEG artifacts in both the source and these images.

You can Download the Cornellbox, as well as the accompanying readme . It's built from the data available from the Cornell University with rounded integer-precision.

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