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i965/cs: Add generator support for CS_OPCODE_CS_TERMINATE

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v2:
 * Don't rely on brw_eu* to generate the send instruction. We now
   generate the send here, and drop the "i965/cs: Add support for the
   SEND message that terminates a CS thread" brw_eu* patch.

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jordan Justen
2014-08-27 11:33:25 -07:00
parent dff4a42676
commit 2a4df9c524
2 changed files with 36 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_fs.h
+1
View File
@@ -557,6 +557,7 @@ private:
GLuint nr);
void generate_fb_write(fs_inst *inst, struct brw_reg payload);
void generate_urb_write(fs_inst *inst, struct brw_reg payload);
void generate_cs_terminate(fs_inst *inst, struct brw_reg payload);
void generate_blorp_fb_write(fs_inst *inst);
void generate_linterp(fs_inst *inst, struct brw_reg dst,
struct brw_reg *src);
src/mesa/drivers/dri/i965/brw_fs_generator.cpp
+35
View File
@@ -369,6 +369,37 @@ fs_generator::generate_urb_write(fs_inst *inst, struct brw_reg payload)
brw_inst_set_urb_global_offset(p->devinfo, insn, inst->offset);
}
void
fs_generator::generate_cs_terminate(fs_inst *inst, struct brw_reg payload)
{
struct brw_inst *insn;
insn = brw_next_insn(p, BRW_OPCODE_SEND);
brw_set_dest(p, insn, brw_null_reg());
brw_set_src0(p, insn, payload);
brw_set_src1(p, insn, brw_imm_d(0));
/* Terminate a compute shader by sending a message to the thread spawner.
*/
brw_inst_set_sfid(devinfo, insn, BRW_SFID_THREAD_SPAWNER);
brw_inst_set_mlen(devinfo, insn, 1);
brw_inst_set_rlen(devinfo, insn, 0);
brw_inst_set_eot(devinfo, insn, inst->eot);
brw_inst_set_header_present(devinfo, insn, false);
brw_inst_set_ts_opcode(devinfo, insn, 0); /* Dereference resource */
brw_inst_set_ts_request_type(devinfo, insn, 0); /* Root thread */
/* Note that even though the thread has a URB resource associated with it,
* we set the "do not dereference URB" bit, because the URB resource is
* managed by the fixed-function unit, so it will free it automatically.
*/
brw_inst_set_ts_resource_select(devinfo, insn, 1); /* Do not dereference URB */
brw_inst_set_mask_control(devinfo, insn, BRW_MASK_DISABLE);
}
void
fs_generator::generate_blorp_fb_write(fs_inst *inst)
{
@@ -2074,6 +2105,10 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
GEN7_PIXEL_INTERPOLATOR_LOC_PER_SLOT_OFFSET);
break;
case CS_OPCODE_CS_TERMINATE:
generate_cs_terminate(inst, src[0]);
break;
default:
unreachable("Unsupported opcode");