anyone have any theory as to why i would be getting awful performance with glTexSubImage3D in linux?
i have a volume editing app where i apply various (small) kernel filters to a volume (1x1x1 - 5x5x5), then use tex sub image to update (instead of downloading the whole thing again).
i think i remember a time when it was pretty fast, but haven’t used the code in a long while. now it takes almost 1 second to update a 5x5x5 region and between 1 and 2 tenths to update a 1x1x1 region. i can’t figure it out.
here’s my driver version:
NVRM version: NVIDIA Linux x86 NVIDIA Kernel Module 1.0-6111 Tue Jul 27 07:55:38 PDT 2004
GCC version: gcc version 3.3.3 20040412 (Red Hat Linux 3.3.3-7)
i’m on FC2 with a Quadro4 700 GoGL.
thanks for any insight…