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authorEric Anholt <eric@anholt.net>2010-06-04 17:09:11 -0700
committerEric Anholt <eric@anholt.net>2010-06-10 08:56:56 -0700
commit0ec768e67aec8b1ded9bcf575ad1c0beb28cc0ca (patch)
tree4b1379f47447bb39ddc20a7bb543734c4b2c6967 /nouveau/libdrm_nouveau.pc.in
parente65caeba9ed0e6c53830d944248aaae2228351ab (diff)
intel: Add more intermediate sizes of cache buckets between powers of 2.
We had two cases recently where the rounding to powers of two hurt badly: 4:2:0 YUV HD video frames would round up from 2.2MB to 4MB, and Urban Terror was hitting aperture size limitations. For UT, this is because mipmap trees for power of two texture sizes will land right in the middle between two cache buckets. By giving a few more sizes between powers of two, Urban Terror on my 945 ends up consuming 207MB of GEM objects instead of 272MB, and HD video decode on Ironlake goes from 99MB to 75MB. cairo-perf-diff of the benchmarks for gl and xlib shows a 1.09x and 1.06x speedup and a 1.07x, 1.08x, and 1.11x slowdown. From this, I think this patch was really a no-op in terms of performance for these CPU-bound workloads.
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