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authorEric Anholt <eric@anholt.net>2010-06-07 09:25:10 -0700
committerEric Anholt <eric@anholt.net>2010-06-11 00:15:56 -0700
commit73de09f265cb1c66d70fd9eb92021882bfbbbef6 (patch)
tree999c40cc2b004ec8cc4670f21fbe72c485884821 /src/mesa/drivers/dri/i965/brw_tex_layout.c
parent118a47623a11a374df371d52ed0294224e6a62dc (diff)
i965: Convert the binding table to streamed indirect state.
This slightly reduces reduces cairo-gl firefox-talos-gfx runtime on my Ironlake: before: [ # ] backend test min(s) median(s) stddev. count [ 0] gl firefox-talos-gfx 38.236 38.383 0.43% 5/6 after: [ 0] gl firefox-talos-gfx 37.799 38.203 0.39% 6/6 It turns out the cost of caching these objects and looking them up in the cache again is greater than the cost of just computing the object again, particularly when the overhead of having a separate BO to pin is removed. (Those that are paying close attention will note that this is a reversal of the path I was moving the driver in a couple of years ago. The major thing that has changed is that back then all state was recomputed when we wrapped the streaming state buffer, including recompiling our precious programs. Now, we're uncaching just the objects that are cheap to compute, and retaining caching of expensive objects)
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_tex_layout.c')
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