From 8ebb8d31af8a53e5acf86704154d4767c8462887 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Timur=20Krist=C3=B3f?= <timur.kristof@gmail.com>
Date: Fri, 26 Feb 2021 16:54:04 +0100
Subject: [PATCH] nir: Add unsigned upper bound for TCS load_invocation_id.
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

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/9201>
---
 src/compiler/nir/nir_range_analysis.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/compiler/nir/nir_range_analysis.c b/src/compiler/nir/nir_range_analysis.c
index d021f4a..115787b 100644
--- a/src/compiler/nir/nir_range_analysis.c
+++ b/src/compiler/nir/nir_range_analysis.c
@@ -1305,6 +1305,12 @@ nir_unsigned_upper_bound(nir_shader *shader, struct hash_table *range_ht,
                    config->max_work_group_count[scalar.comp]) - 1u;
          }
          break;
+      case nir_intrinsic_load_invocation_id:
+         if (shader->info.stage == MESA_SHADER_TESS_CTRL)
+            res = shader->info.tess.tcs_vertices_out
+                  ? (shader->info.tess.tcs_vertices_out - 1)
+                  : 511; /* Generous maximum output patch size of 512 */
+         break;
       case nir_intrinsic_load_subgroup_invocation:
       case nir_intrinsic_first_invocation:
       case nir_intrinsic_mbcnt_amd:
-- 
2.7.4