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aco: Fixup out_launch_size_y in the RT prolog for 1D dispatch

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launch_size_y is set to ACO_RT_CONVERTED_2D_LAUNCH_SIZE for 1D
dispatches. The prolog needs to set it to 1 so that the app shader
loads the correct value.

cc: mesa-stable

(cherry picked from commit 47ffe2ecd4)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38167>
This commit is contained in:
Konstantin Seurer 2025-10-22 08:04:09 +02:00 • committed by Dylan Baker
parent 3f9f4d79d3
commit 2a0a2cc5b0
2 changed files with 3 additions and 1 deletions
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2
.pick_status.json
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@ -884,7 +884,7 @@
"description": "aco: Fixup out_launch_size_y in the RT prolog for 1D dispatch",
"nominated": true,
"nomination_type": 1,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

2
src/amd/compiler/instruction_selection/aco_select_rt_prolog.cpp
View file

@ -214,6 +214,8 @@ select_rt_prolog(Program* program, ac_shader_config* config,
bld.sop2(Builder::s_cselect, Definition(vcc, bld.lm),
Operand::c32_or_c64(-1u, program->wave_size == 64),
Operand::c32_or_c64(0, program->wave_size == 64), Operand(scc, s1));
bld.sop2(aco_opcode::s_cselect_b32, Definition(out_launch_size_y, s1),
Operand(out_launch_size_y, s1), Operand::c32(1), Operand(scc, s1));
bld.vop2(aco_opcode::v_cndmask_b32, Definition(out_launch_ids[0], v1),
Operand(tmp_invocation_idx, v1), Operand(out_launch_ids[0], v1), Operand(vcc, bld.lm));
bld.vop2(aco_opcode::v_cndmask_b32, Definition(out_launch_ids[1], v1), Operand::zero(),