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aco: Calculate workgroup size of legacy GS.

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Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4388>
This commit is contained in:
Timur Kristóf 2020-04-27 19:51:40 +02:00 • committed by Marge Bot
parent fdbb296853
commit baa46878d4
1 changed files with 5 additions and 1 deletions
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6
src/amd/compiler/aco_instruction_selection_setup.cpp
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@ -1293,7 +1293,11 @@ setup_isel_context(Program* program,
program->workgroup_size = program->wave_size;
} else if (program->stage & hw_gs) {
/* If on-chip GS (LDS rings) are enabled on GFX9 or later, merged GS operates in workgroups */
program->workgroup_size = UINT_MAX; /* TODO: set by VGT_GS_ONCHIP_CNTL, which is not plumbed to ACO */
assert(program->chip_class >= GFX9);
uint32_t es_verts_per_subgrp = G_028A44_ES_VERTS_PER_SUBGRP(program->info->gs_ring_info.vgt_gs_onchip_cntl);
uint32_t gs_instr_prims_in_subgrp = G_028A44_GS_INST_PRIMS_IN_SUBGRP(program->info->gs_ring_info.vgt_gs_onchip_cntl);
uint32_t workgroup_size = MAX2(es_verts_per_subgrp, gs_instr_prims_in_subgrp);
program->workgroup_size = MAX2(MIN2(workgroup_size, 256), 1);
} else if (program->stage == vertex_ls) {
/* Unmerged LS operates in workgroups */
program->workgroup_size = UINT_MAX; /* TODO: probably tcs_num_patches * tcs_vertices_in, but those are not plumbed to ACO for LS */