https://bugs.freedesktop.org/show_bug.cgi?id=29350
Corbin Simpson MostAwesomedude@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |NOTOURBUG
--- Comment #4 from Corbin Simpson MostAwesomedude@gmail.com 2010-08-13 16:57:34 PDT --- Closing as NOTOURBUG; leaving the following for posterity.
In UMS mode, r600c provides 8 bits of stencil on all configs, but in KMS mode, the normal wider variety of configs are available. The app used to have a call to SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 1), but it was commented out for some reason. Uncommenting that line caused a stencilled config to be properly selected.
The moral: Always check your GL configs.
~ C.