diff options
author | Timur Kristóf <[email protected]> | 2020-03-30 17:23:25 +0200 |
---|---|---|
committer | Marge Bot <[email protected]> | 2020-04-29 11:51:04 +0000 |
commit | ee5f04c9c9c02e42739924f9f0b6efd3f9077039 (patch) | |
tree | af34e43fd5561356b26b66ede5e1f27cfb439bd7 | |
parent | efa4976709afbbbfd430235bb8b71e6abb66d8e7 (diff) |
aco: Use new default driver locations.
The way the new locations are set up has much fewer gaps
between each I/O slot, so this results in a massive reduction
in the LDS usage of tessellation shaders.
Totals (GFX10):
VGPRS: 3976792 -> 3974864 (-0.05 %)
Code Size: 260552784 -> 260532860 (-0.01 %) bytes
LDS: 48723 -> 30179 (-38.06 %) blocks
Max Waves: 1053407 -> 1053583 (0.02 %)
Totals from affected shaders (1407 shaders on GFX10):
SGPRS: 59144 -> 59216 (0.12 %)
VGPRS: 63024 -> 61096 (-3.06 %)
Code Size: 2695508 -> 2675584 (-0.74 %) bytes
LDS: 47109 -> 28565 (-39.36 %) blocks
Max Waves: 12999 -> 13175 (1.35 %)
Signed-off-by: Timur Kristóf <[email protected]>
Reviewed-by: Rhys Perry <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4388>
-rw-r--r-- | src/amd/compiler/aco_instruction_selection_setup.cpp | 124 |
1 files changed, 17 insertions, 107 deletions
diff --git a/src/amd/compiler/aco_instruction_selection_setup.cpp b/src/amd/compiler/aco_instruction_selection_setup.cpp index dee86585c8e..04dbe8f7e03 100644 --- a/src/amd/compiler/aco_instruction_selection_setup.cpp +++ b/src/amd/compiler/aco_instruction_selection_setup.cpp @@ -91,10 +91,6 @@ struct isel_context { /* GS inputs */ Temp gs_wave_id; - /* gathered information */ - uint64_t input_masks[MESA_SHADER_COMPUTE]; - uint64_t output_masks[MESA_SHADER_COMPUTE]; - /* VS output information */ bool export_clip_dists; unsigned num_clip_distances; @@ -744,7 +740,7 @@ setup_vs_output_info(isel_context *ctx, nir_shader *nir, if (outinfo->writes_pointsize || outinfo->writes_viewport_index || outinfo->writes_layer) pos_written |= 1 << 1; - uint64_t mask = ctx->output_masks[nir->info.stage]; + uint64_t mask = nir->info.outputs_written; while (mask) { int idx = u_bit_scan64(&mask); if (idx >= VARYING_SLOT_VAR0 || idx == VARYING_SLOT_LAYER || @@ -789,17 +785,8 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir) } nir_foreach_variable(variable, &nir->outputs) { - if (ctx->stage == vertex_geometry_gs) - variable->data.driver_location = util_bitcount64(ctx->output_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4; - else if (ctx->stage == vertex_es || - ctx->stage == vertex_ls || - ctx->stage == vertex_tess_control_hs) - // TODO: make this more compact - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4; - else if (ctx->stage == vertex_vs || ctx->stage == ngg_vertex_gs) + if (ctx->stage == vertex_vs || ctx->stage == ngg_vertex_gs) variable->data.driver_location = variable->data.location * 4; - else - unreachable("Unsupported VS stage"); assert(variable->data.location >= 0 && variable->data.location <= UINT8_MAX); ctx->output_drv_loc_to_var_slot[MESA_SHADER_VERTEX][variable->data.driver_location / 4] = variable->data.location; @@ -818,7 +805,7 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir) /* radv_es_output_info *outinfo = &ctx->program->info->vs.es_info; outinfo->esgs_itemsize = util_bitcount64(ctx->output_masks[nir->info.stage]) * 16u; */ } else if (ctx->stage == vertex_ls) { - ctx->tcs_num_inputs = util_last_bit64(ctx->args->shader_info->vs.ls_outputs_written); + ctx->tcs_num_inputs = ctx->program->info->vs.num_linked_outputs; } if (ctx->stage == ngg_vertex_gs && ctx->args->options->key.vs_common_out.export_prim_id) { @@ -831,19 +818,8 @@ setup_vs_variables(isel_context *ctx, nir_shader *nir) void setup_gs_variables(isel_context *ctx, nir_shader *nir) { - if (ctx->stage == vertex_geometry_gs || ctx->stage == tess_eval_geometry_gs) { - nir_foreach_variable(variable, &nir->inputs) { - variable->data.driver_location = util_bitcount64(ctx->input_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4; - } + if (ctx->stage == vertex_geometry_gs || ctx->stage == tess_eval_geometry_gs) ctx->program->config->lds_size = ctx->program->info->gs_ring_info.lds_size; /* Already in units of the alloc granularity */ - } else if (ctx->stage == geometry_gs) { - //TODO: make this more compact - nir_foreach_variable(variable, &nir->inputs) { - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot)variable->data.location) * 4; - } - } else { - unreachable("Unsupported GS stage."); - } nir_foreach_variable(variable, &nir->outputs) { variable->data.driver_location = variable->data.location * 4; @@ -867,22 +843,15 @@ setup_tcs_info(isel_context *ctx, nir_shader *nir) ctx->stage == vertex_tess_control_hs && ctx->args->options->key.tcs.input_vertices == nir->info.tess.tcs_vertices_out; - if (ctx->stage == tess_control_hs) { - ctx->tcs_num_inputs = ctx->args->options->key.tcs.num_inputs; - } else if (ctx->stage == vertex_tess_control_hs) { - ctx->tcs_num_inputs = util_last_bit64(ctx->args->shader_info->vs.ls_outputs_written); - - if (ctx->tcs_in_out_eq) { - ctx->tcs_temp_only_inputs = ~nir->info.tess.tcs_cross_invocation_inputs_read & - ~nir->info.inputs_read_indirectly & - nir->info.inputs_read; - } - } else { - unreachable("Unsupported TCS shader stage"); + if (ctx->tcs_in_out_eq) { + ctx->tcs_temp_only_inputs = ~nir->info.tess.tcs_cross_invocation_inputs_read & + ~nir->info.inputs_read_indirectly & + nir->info.inputs_read; } - ctx->tcs_num_outputs = util_last_bit64(ctx->args->shader_info->tcs.outputs_written); - ctx->tcs_num_patch_outputs = util_last_bit64(ctx->args->shader_info->tcs.patch_outputs_written); + ctx->tcs_num_inputs = ctx->program->info->tcs.num_linked_inputs; + ctx->tcs_num_outputs = ctx->program->info->tcs.num_linked_outputs; + ctx->tcs_num_patch_outputs = ctx->program->info->tcs.num_linked_patch_outputs; ctx->tcs_num_patches = get_tcs_num_patches( ctx->args->options->key.tcs.input_vertices, @@ -910,43 +879,30 @@ setup_tcs_info(isel_context *ctx, nir_shader *nir) void setup_tcs_variables(isel_context *ctx, nir_shader *nir) { - nir_foreach_variable(variable, &nir->inputs) { - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4; - } - nir_foreach_variable(variable, &nir->outputs) { - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4; assert(variable->data.location >= 0 && variable->data.location <= UINT8_MAX); + if (variable->data.location == VARYING_SLOT_TESS_LEVEL_OUTER) + ctx->tcs_tess_lvl_out_loc = variable->data.driver_location * 4u; + else if (variable->data.location == VARYING_SLOT_TESS_LEVEL_INNER) + ctx->tcs_tess_lvl_in_loc = variable->data.driver_location * 4u; + if (variable->data.patch) ctx->output_tcs_patch_drv_loc_to_var_slot[variable->data.driver_location / 4] = variable->data.location; else ctx->output_drv_loc_to_var_slot[MESA_SHADER_TESS_CTRL][variable->data.driver_location / 4] = variable->data.location; } - - ctx->tcs_tess_lvl_out_loc = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_OUTER) * 16u; - ctx->tcs_tess_lvl_in_loc = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_INNER) * 16u; } void setup_tes_variables(isel_context *ctx, nir_shader *nir) { ctx->tcs_num_patches = ctx->args->options->key.tes.num_patches; - ctx->tcs_num_outputs = ctx->args->options->key.tes.tcs_num_outputs; - - nir_foreach_variable(variable, &nir->inputs) { - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4; - } + ctx->tcs_num_outputs = ctx->program->info->tes.num_linked_inputs; nir_foreach_variable(variable, &nir->outputs) { if (ctx->stage == tess_eval_vs || ctx->stage == ngg_tess_eval_gs) variable->data.driver_location = variable->data.location * 4; - else if (ctx->stage == tess_eval_es) - variable->data.driver_location = shader_io_get_unique_index((gl_varying_slot) variable->data.location) * 4; - else if (ctx->stage == tess_eval_geometry_gs) - variable->data.driver_location = util_bitcount64(ctx->output_masks[nir->info.stage] & ((1ull << variable->data.location) - 1ull)) * 4; - else - unreachable("Unsupported TES shader stage"); } if (ctx->stage == tess_eval_vs || ctx->stage == ngg_tess_eval_gs) { @@ -994,50 +950,6 @@ setup_variables(isel_context *ctx, nir_shader *nir) } } -void -get_io_masks(isel_context *ctx, unsigned shader_count, struct nir_shader *const *shaders) -{ - for (unsigned i = 0; i < shader_count; i++) { - nir_shader *nir = shaders[i]; - if (nir->info.stage == MESA_SHADER_COMPUTE) - continue; - - uint64_t output_mask = 0; - nir_foreach_variable(variable, &nir->outputs) { - const glsl_type *type = variable->type; - if (nir_is_per_vertex_io(variable, nir->info.stage)) - type = type->fields.array; - unsigned slots = type->count_attribute_slots(false); - if (variable->data.compact) { - unsigned component_count = variable->data.location_frac + type->length; - slots = (component_count + 3) / 4; - } - output_mask |= ((1ull << slots) - 1) << variable->data.location; - } - - uint64_t input_mask = 0; - nir_foreach_variable(variable, &nir->inputs) { - const glsl_type *type = variable->type; - if (nir_is_per_vertex_io(variable, nir->info.stage)) - type = type->fields.array; - unsigned slots = type->count_attribute_slots(false); - if (variable->data.compact) { - unsigned component_count = variable->data.location_frac + type->length; - slots = (component_count + 3) / 4; - } - input_mask |= ((1ull << slots) - 1) << variable->data.location; - } - - ctx->output_masks[nir->info.stage] |= output_mask; - if (i + 1 < shader_count) - ctx->input_masks[shaders[i + 1]->info.stage] |= output_mask; - - ctx->input_masks[nir->info.stage] |= input_mask; - if (i) - ctx->output_masks[shaders[i - 1]->info.stage] |= input_mask; - } -} - unsigned lower_bit_size_callback(const nir_alu_instr *alu, void *_) { @@ -1321,8 +1233,6 @@ setup_isel_context(Program* program, program->vgpr_limit = get_addr_vgpr_from_waves(program, program->min_waves); program->sgpr_limit = get_addr_sgpr_from_waves(program, program->min_waves); - get_io_masks(&ctx, shader_count, shaders); - unsigned scratch_size = 0; if (program->stage == gs_copy_vs) { assert(shader_count == 1); |