[Mesa-dev] [PATCH 1/3] amd/common: scan which components of gl_WorkGroupID are used

[Samuel Pitoiset]

Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
---
 src/amd/common/ac_shader_info.c | 8 ++++++++
 src/amd/common/ac_shader_info.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/src/amd/common/ac_shader_info.c b/src/amd/common/ac_shader_info.c
index 09dd4bbd55..01949770d6 100644
--- a/src/amd/common/ac_shader_info.c
+++ b/src/amd/common/ac_shader_info.c
@@ -45,6 +45,14 @@ gather_intrinsic_info(nir_intrinsic_instr *instr, struct 
ac_shader_info *info)
        case nir_intrinsic_load_num_work_groups:
                info->cs.uses_grid_size = true;
                break;
+       case nir_intrinsic_load_work_group_id: {
+               unsigned mask = nir_ssa_def_components_read(&instr->dest.ssa);
+               while (mask) {
+                       unsigned i = u_bit_scan(&mask);
+                       info->cs.uses_block_id[i] = true;
+               }
+               break;
+       }
        case nir_intrinsic_load_sample_id:
                info->ps.force_persample = true;
                break;
diff --git a/src/amd/common/ac_shader_info.h b/src/amd/common/ac_shader_info.h
index 3c809cce13..7beefd02ac 100644
--- a/src/amd/common/ac_shader_info.h
+++ b/src/amd/common/ac_shader_info.h
@@ -43,6 +43,7 @@ struct ac_shader_info {
        } ps;
        struct {
                bool uses_grid_size;
+               bool uses_block_id[3];
        } cs;
 };
 
-- 
2.15.1

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