diff options
author | Matt Turner <[email protected]> | 2015-04-14 13:17:38 -0700 |
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committer | Matt Turner <[email protected]> | 2015-04-21 09:24:48 -0700 |
commit | 529064f6a80d72294cc865a46304110e0401296d (patch) | |
tree | c064ca50218eac80d9db645e4bbf801ee7723c54 /src/glx/indirect_texture_compression.c | |
parent | 5af0604d528733af9113a6f8711c39796ce0ae40 (diff) |
i965/fs: Combine pixel center calculation into one inst.
The X and Y values come interleaved in g1 (.4-.11 inclusive), so we can
calculate them together with a single add(32) instruction on some
platforms like Broadwell and newer or in SIMD8 elsewhere.
Note that I also moved the PIXEL_X/PIXEL_Y virtual opcodes from before
LINTERP to after it. That's because the writes_accumulator_implicitly()
function in backend_instruction tests for <= LINTERP for determining
whether the instruction indeed writes the accumulator implicitly. The
old FS_OPCODE_PIXEL_X/Y emitted ADD instructions, which did, but the new
opcodes just emit MOVs, which don't. It doesn't matter, since we don't
use these opcodes on Gen4/5 anymore, but in the case that we do...
On Broadwell:
total instructions in shared programs: 7192355 -> 7186224 (-0.09%)
instructions in affected programs: 1190700 -> 1184569 (-0.51%)
helped: 6131
On Haswell:
total instructions in shared programs: 6155979 -> 6152800 (-0.05%)
instructions in affected programs: 652362 -> 649183 (-0.49%)
helped: 3179
Reviewed-by: Jason Ekstrand <[email protected]>
Diffstat (limited to 'src/glx/indirect_texture_compression.c')
0 files changed, 0 insertions, 0 deletions