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| author | Iago Toral Quiroga <itoral@igalia.com> | 2016-01-05 09:14:51 +0100 |
|---|---|---|
| committer | Samuel Iglesias Gonsálvez <siglesias@igalia.com> | 2016-04-28 12:01:40 +0200 |
| commit | bf91df7f7ff0c07e12d49a47df3b67ee149540f9 (patch) | |
| tree | 67f52b32e7e410b83bb1cbcb20a0bb312dd500f2 /src/compiler/nir/nir_lower_double_ops.c | |
| parent | 126a1ac03f7c7d7cd01629c91725ffced06147a9 (diff) | |
| download | external_mesa3d-bf91df7f7ff0c07e12d49a47df3b67ee149540f9.zip external_mesa3d-bf91df7f7ff0c07e12d49a47df3b67ee149540f9.tar.gz external_mesa3d-bf91df7f7ff0c07e12d49a47df3b67ee149540f9.tar.bz2 | |
nir/lower_double_ops: lower fract()
At least i965 hardware does not have native support for fract() on doubles.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Diffstat (limited to 'src/compiler/nir/nir_lower_double_ops.c')
| -rw-r--r-- | src/compiler/nir/nir_lower_double_ops.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_lower_double_ops.c b/src/compiler/nir/nir_lower_double_ops.c index 2d94f78..f1fa2c3 100644 --- a/src/compiler/nir/nir_lower_double_ops.c +++ b/src/compiler/nir/nir_lower_double_ops.c @@ -383,6 +383,12 @@ lower_ceil(nir_builder *b, nir_ssa_def *src) nir_fadd(b, tr, nir_imm_double(b, 1.0))); } +static nir_ssa_def * +lower_fract(nir_builder *b, nir_ssa_def *src) +{ + return nir_fsub(b, src, nir_ffloor(b, src)); +} + static void lower_doubles_instr(nir_alu_instr *instr, nir_lower_doubles_options options) { @@ -421,6 +427,11 @@ lower_doubles_instr(nir_alu_instr *instr, nir_lower_doubles_options options) return; break; + case nir_op_ffract: + if (!(options & nir_lower_dfract)) + return; + break; + default: return; } @@ -453,6 +464,9 @@ lower_doubles_instr(nir_alu_instr *instr, nir_lower_doubles_options options) case nir_op_fceil: result = lower_ceil(&bld, src); break; + case nir_op_ffract: + result = lower_fract(&bld, src); + break; default: unreachable("unhandled opcode"); } |