Mesa (main): compiler: Add new non-Multiview Task/Mesh builtins

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Module: Mesa
Branch: main
Commit: 813d41829da42a99e59586473ca440ffac261f93
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=813d41829da42a99e59586473ca440ffac261f93

Author: Caio Marcelo de Oliveira Filho <caio.oliveira at intel.com>
Date:   Thu Apr 29 13:45:56 2021 -0700

compiler: Add new non-Multiview Task/Mesh builtins

Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Timur Kristóf <timur.kristof at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10600>

---

 src/compiler/shader_enums.c | 24 ++++++++++++++++++++++++
 src/compiler/shader_enums.h |  5 +++++
 2 files changed, 29 insertions(+)

diff --git a/src/compiler/shader_enums.c b/src/compiler/shader_enums.c
index 8e6babed870..78d5c8baf70 100644
--- a/src/compiler/shader_enums.c
+++ b/src/compiler/shader_enums.c
@@ -160,6 +160,30 @@ gl_varying_slot_name_for_stage(gl_varying_slot slot, gl_shader_stage stage)
    if (stage != MESA_SHADER_FRAGMENT && slot == VARYING_SLOT_PRIMITIVE_SHADING_RATE)
       return "VARYING_SLOT_PRIMITIVE_SHADING_RATE";
 
+   switch (stage) {
+   case MESA_SHADER_MESH:
+      switch (slot) {
+      case VARYING_SLOT_PRIMITIVE_COUNT: return "VARYING_SLOT_PRIMITIVE_COUNT";
+      case VARYING_SLOT_PRIMITIVE_INDICES: return "VARYING_SLOT_PRIMITIVE_INDICES";
+      default:
+         /* Not an overlapping value. */
+         break;
+      }
+      break;
+
+   case MESA_SHADER_TASK:
+      switch (slot) {
+      case VARYING_SLOT_TASK_COUNT: return "VARYING_SLOT_TASK_COUNT";
+      default:
+         /* Not an overlapping value. */
+         break;
+      }
+      break;
+
+   default:
+      break;
+   }
+
    static const char *names[] = {
       ENUM(VARYING_SLOT_POS),
       ENUM(VARYING_SLOT_COL0),
diff --git a/src/compiler/shader_enums.h b/src/compiler/shader_enums.h
index 1833b8c1ed0..1dc8f7a646c 100644
--- a/src/compiler/shader_enums.h
+++ b/src/compiler/shader_enums.h
@@ -303,6 +303,11 @@ typedef enum
    VARYING_SLOT_VIEW_INDEX,
    VARYING_SLOT_VIEWPORT_MASK, /* Does not appear in FS */
    VARYING_SLOT_PRIMITIVE_SHADING_RATE = VARYING_SLOT_FACE, /* Does not appear in FS. */
+
+   VARYING_SLOT_PRIMITIVE_COUNT = VARYING_SLOT_TESS_LEVEL_OUTER, /* Only appears in MESH. */
+   VARYING_SLOT_PRIMITIVE_INDICES = VARYING_SLOT_TESS_LEVEL_INNER, /* Only appears in MESH. */
+   VARYING_SLOT_TASK_COUNT = VARYING_SLOT_BOUNDING_BOX0, /* Only appears in TASK. */
+
    VARYING_SLOT_VAR0 = 32, /* First generic varying slot */
    /* the remaining are simply for the benefit of gl_varying_slot_name()
     * and not to be construed as an upper bound: