Using Intel compilers

[bkoz]

Has anyone experienced problems using Intel's compilers with OpenGL? We have seen intermittent lighting issues with both 32 and 64-bit (version 9.1) Intel compilers that we do not see with gcc.

See the attached snapshots for an example.

[IMG]ftp://services.espycorp.com/pub/good.jpg[/IMG]
Normal
[IMG]ftp://services.espycorp.com/pub/error3.jpg[/IMG]
Error

Thanks,
bkoz

[ssnyder]

Originally Posted by bkoz

Has anyone experienced problems using Intel's compilers with OpenGL? We have seen intermittent lighting issues with both 32 and 64-bit (version 9.1) Intel compilers that we do not see with gcc.

See the attached snapshots for an example.

[IMG]ftp://services.espycorp.com/pub/good.jpg[/IMG]
Normal
[IMG]ftp://services.espycorp.com/pub/error3.jpg[/IMG]
Error

Thanks,
bkoz

Try adjusting the floating-point optimization. I've seen the compiler be over-aggressive with FP code generation and fixed it by forcing precise FP code.