On Friday, June 9, 2017 6:01:40 AM PDT Chris Wilson wrote: > Reuse the same query object buffer for multiple queries within the same > batch. > > A task for the future is propagating the GL_NO_MEMORY errors. > > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> > Cc: Kenneth Graunke <kenn...@whitecape.org> > Cc: Matt Turner <matts...@gmail.com> > --- > src/mesa/drivers/dri/i965/brw_context.c | 3 +++ > src/mesa/drivers/dri/i965/brw_context.h | 10 ++++--- > src/mesa/drivers/dri/i965/brw_queryobj.c | 16 +++++------ > src/mesa/drivers/dri/i965/gen6_queryobj.c | 44 > ++++++++++++++++++++++++++----- > 4 files changed, 55 insertions(+), 18 deletions(-)
The benefit is saving memory, right? The downside seems to be increased WaitQuery() latencies: - Start Query A - End Query A - Start Query B - Batch Flush - End Query B - WaitQuery for A The query BO also contains B, and both batches refer to it, so it seems like WaitQuery() would wait for two batches to complete instead of one. --Ken
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