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| author | Jason Ekstrand <jason.ekstrand@intel.com> | 2015-08-03 10:00:38 -0700 |
|---|---|---|
| committer | Jason Ekstrand <jason.ekstrand@intel.com> | 2015-08-10 11:45:43 -0700 |
| commit | 5e1c1c2fcbdfb96a973ae3fd196e341ab2d41833 (patch) | |
| tree | 7f6475a3ce6c86ab65cc9a50b42f89393399df1a | |
| parent | 1d4e698466bdea735c5f06c2658322bdc527efce (diff) | |
i965/vec4-nir: Handle boolean resolvese on ILK-
The analysis code was already there and running, we just weren't doing
anything with the result of it yet.
Reviewed-by: Matt Turner <mattst88@gmail.com>
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp index b13465bcb3..3056d09821 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -1292,6 +1292,20 @@ vec4_visitor::nir_emit_alu(nir_alu_instr *instr) default: unreachable("Unimplemented ALU operation"); } + + /* If we need to do a boolean resolve, replace the result with -(x & 1) + * to sign extend the low bit to 0/~0 + */ + if (devinfo->gen <= 5 && + (instr->instr.pass_flags & BRW_NIR_BOOLEAN_MASK) == + BRW_NIR_BOOLEAN_NEEDS_RESOLVE) { + dst_reg masked = dst_reg(this, glsl_type::int_type); + masked.writemask = dst.writemask; + emit(AND(masked, src_reg(dst), src_reg(1))); + src_reg masked_neg = src_reg(masked); + masked_neg.negate = true; + emit(MOV(retype(dst, BRW_REGISTER_TYPE_D), masked_neg)); + } } void |