st/mesa: implement GL_AMD_performance_monitor
This is based on the original patch of Christoph Bumiller.
v2 (Samuel Pitoiset):
- improve Gallium interface for this extension
- rewrite some parts of the original code
- fix compilation errors and piglit tests
v3:
- only enable this extension when the underlying driver expose GPU counters
- get rid of the ring buffer of queries
v4:
- add a debug message when the maximum number of counters has been
reached
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
4 files changed