brkho/mesa: Clone of mesa. - mesa

Clone of mesa.

Koks: d8aa0269cd

Gareth Hughes d8aa0269cd Support for swappable tnl modules. Core Mesa provides a neutral tnl module that verifies the currently module before installing the tnl function pointers in a lazy fashion. It also records which tnl functions have been swapped out, and only restores these when tnl modules themselves are swapped. Fallback strategies: Drivers set a bitmask of dangerous stage changes. When such a state change occurs, the driver should restore the neutral tnl module via _mesa_restore_exec_vtxfmt(). The neutral tnl module will call _mesa_update_state(), followed by ctx->Driver.ValidateTnlModule() if the validation bitmask matches the new state bitmask. The driver should call _tnl_wakeup_exec() if it can no longer handle the current state, which will revert to the default tnl module. In this case, previous vertices should be replayed as required (depending on the current primitive) after the new tnl module is installed. If the driver uses chooser functions for any part of the tnl module, these should generally be reinstalled as part of the fallback to the neutral tnl module. For example, if the lighting state changes, a driver might fall back to the neutral tnl module, verify that the current lighting state can be handled, and use the chooser function to pick the most efficient implementation of the current lighting state. It is up to the drivers to detect and handle fallback cases caused by tnl function calls themselves (such as glTexCoord4f* if the current tnl module can't handle projected textures, for example).		pirms 24 gadiem
bin	added third, tiny version number to arguments	pirms 26 gadiem
docs	more 3.5 updates	pirms 24 gadiem
include/GL	added a bunch of extensions (Ray Tice)	pirms 24 gadiem
progs	test 16-bit/channel rendering	pirms 24 gadiem
src	Support for swappable tnl modules.	pirms 24 gadiem
Make-config	added some missing backslashes	pirms 24 gadiem
Makefile.X11	test check-in	pirms 24 gadiem