On Wed, Jun 30, 2004 at 11:40:27AM +0900, Sasayama wrote:
| How complete is it in regard to the OpenGL specification?

I've managed the development of a couple of OpenGL test suites
(including the official conformance test suite for the first several
years of its existence).  A suite that aspires to full spec coverage
needs about 20 engineer-years of effort to get started.  An
industrial-strength suite needs considerably more than that.  Only a few
graphics vendors have been willing to invest that much effort, and they
aren't interested in open-sourcing the code because it would benefit
their competitors.

Even the official conformance tests don't cover enough of the
specification to validate a commercial implementation.  That's one of
the reasons vendors have developed test suites of their own.

Glean consists of tests that have been contributed mostly by DRI and
Mesa developers, so it reflects their particular needs and interests.  I
think that's the right approach for an Open Source test suite.  Based on
past experience, I don't think it's possible to generate enough interest
from the graphics community to build a suite with full spec coverage,
but it is possible to cover a useful subset.

I'd be happy to have a more in-depth discussion with anyone who's
interested.

Allen
(glean administrator)


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