This will be used to implement the barrier function. v2: * Rename to brw_WAIT (mattst88)
Signed-off-by: Jordan Justen <jordan.l.jus...@intel.com> Reviewed-by: Chris Forbes <chr...@ijw.co.nz> Reviewed-by: Matt Turner <matts...@gmail.com> --- src/mesa/drivers/dri/i965/brw_eu.h | 2 ++ src/mesa/drivers/dri/i965/brw_eu_emit.c | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/src/mesa/drivers/dri/i965/brw_eu.h b/src/mesa/drivers/dri/i965/brw_eu.h index b8c63a3..fe80c8b 100644 --- a/src/mesa/drivers/dri/i965/brw_eu.h +++ b/src/mesa/drivers/dri/i965/brw_eu.h @@ -390,6 +390,8 @@ brw_inst *brw_JMPI(struct brw_codegen *p, struct brw_reg index, void brw_NOP(struct brw_codegen *p); +void brw_WAIT(struct brw_codegen *p); + /* Special case: there is never a destination, execution size will be * taken from src0: */ diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c index 26b433b..d7f9710 100644 --- a/src/mesa/drivers/dri/i965/brw_eu_emit.c +++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c @@ -2950,3 +2950,24 @@ void brw_shader_time_add(struct brw_codegen *p, 0 /* response length */, false /* header present */); } + + +/** + * Emit the wait instruction for a barrier + */ +void +brw_WAIT(struct brw_codegen *p) +{ + const struct brw_device_info *devinfo = p->devinfo; + struct brw_inst *insn; + + struct brw_reg src = brw_notification_reg(); + + insn = next_insn(p, BRW_OPCODE_WAIT); + brw_set_dest(p, insn, src); + brw_set_src0(p, insn, src); + brw_set_src1(p, insn, brw_null_reg()); + + brw_inst_set_exec_size(devinfo, insn, BRW_EXECUTE_1); + brw_inst_set_mask_control(devinfo, insn, BRW_MASK_DISABLE); +} -- 2.1.4 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev