From: Christopher Sean Morrison <brlcad@ma...> - 2013-06-28 20:39:00
On Jun 28, 2013, at 4:23 PM, Nyah Chck wrote:
> I am working on adding support for orthogonal matrices in bn_mat_inverse() and its failing 3 regression tests.
> need some help
Which tests are failing; is it the regression or benchmark tests?
For most of the tests, results are compared against known good values. The first step when encountering a failure is to look at the before and after to see if the change is anything obvious or helpful. For the benchmarks, the results are actually images, so it's really easy to see the differences. There is a reference image file in the pix/ directory. There is a computed image pix file in the bench directory. You can run "pix-fb ../pix/reference.pix" and "pix-fb bench/computed.pix" to see the two images. You can run "pixdiff bench/computed.pix ../pix/reference.pix | pix-fb" to visualize the differences (errors) between the two (they'll be the white pixels)".