specular light in opengl

[heppe]

We are finding that specular lighting is missing from opengl in our application. The problem spans the entire range of intel express integrated chipsets, both XP and Vista. It does not, however show up with other vendors' (AMD/NVidia) opengl implementations. Is that a known problem?

Thanks,

-Travis

[Chuck_De_Sylva]

On which Intel graphics part are you running?

[heppe]

82915G and 82G965 at least, and perhaps one or two others. XP and Vista.

-Travis

[Chuck_De_Sylva]

Can you mail me a test case?

[Chris_M_Intel]

Wow, this looks like an old issue. I'll push a bug over to the development team and see if we can get this resolved.

Chris

[Chris_M_Intel]

... and in a lightning turn-around of only 7 months, the driver team has found a bug in the OGL driver logic dealing with GL_SEPARATE_SPECULAR_COLOR. They don't have a fix as of yet, but they've identified the problem. I figured I'd keep this updated given the hectic progress on this issue so far...

Chris