marcc@yoyodyne.ncsa.uiuc.edu (Marc Cooper) (01/31/91)
I'm getting the following error from my program, which continues to run, but doesn't perform as expected.. ERROR #1 gl_invert4d : ERR_SINGMATRIX My first throught is that somehow I'm passing in a non-invertible matrix, but that seems rather difficult, since the only time I use loadmatrrix() is with a predefined 4x4 identity matrix. Any details on exactly what this error is and possible causes/fixes are appreciated. Replys though here or email are fine... -- Marc Cooper | "In my childhood, I WAS an imaginary playmate." marcc@ncsa.uiuc.edu | -Tom Robbins, EVEN GOWGIRLS GET THE BLUES National Center for Supercomputing Applications Disclaimer: "It's mine! All mine!" -D. Duck
andreess@mrlaxs.mrl.uiuc.edu (Marc Andreessen) (01/31/91)
In article <1991Jan30.161544.7845@ux1.cso.uiuc.edu> marcc@yoyodyne.ncsa.uiuc.edu (Marc Cooper) writes: >I'm getting the following error from my program, which continues to run, >but doesn't perform as expected.. > >ERROR #1 gl_invert4d : ERR_SINGMATRIX One generally sure way of getting errors like this is scaling some dimension to 0... which is easy to do accidentally - i.e. doing scale( 0., 0., z_factor ) instead of scale( 1., 1., z_factor ). Check all transformations several times over - it's probably a source code bug. Marc -- Marc Andreessen___________University of Illinois Materials Research Laboratory Internet: andreessen@uimrl7.mrl.uiuc.edu____________Bitnet: andreessen@uiucmrl