From 5e1c8056ae51ed02811d309c6c4a046d6997d2b1 Mon Sep 17 00:00:00 2001
From: Giovanni Mascellani <gmascellani@codeweavers.com>
Date: Thu, 29 May 2025 19:03:53 +0200
Subject: [PATCH] vkd3d-shader/dxil: Emit 16-bit raw TGSMs as minimum
 precision.

---
 libs/vkd3d-shader/dxil.c    |  5 ++++-
 tests/hlsl/tgsm.shader_test | 18 +++++++++---------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 1c7ed0d9e..50be8a4f5 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -3720,7 +3720,10 @@ static void sm6_parser_declare_tgsm_raw(struct sm6_parser *sm6, const struct sm6
     dst->structure_stride = 0;
     sm6_register_from_value(&ins->declaration.tgsm_raw.reg.reg, dst, sm6);
     ins->declaration.tgsm_raw.alignment = alignment;
-    byte_count = elem_type->u.width / 8u;
+    byte_count = elem_type->u.width / CHAR_BIT;
+    /* Convert minimum precision types to their 32-bit equivalent. */
+    if (byte_count == 2)
+        byte_count = 4;
     if (byte_count != 4)
     {
         FIXME("Unsupported byte count %u.\n", byte_count);
diff --git a/tests/hlsl/tgsm.shader_test b/tests/hlsl/tgsm.shader_test
index 6865aeaa7..6f567b694 100644
--- a/tests/hlsl/tgsm.shader_test
+++ b/tests/hlsl/tgsm.shader_test
@@ -305,15 +305,15 @@ void main(uint local_idx : SV_GroupIndex, uint group_id : SV_GroupID)
 }
 
 [test]
-todo dispatch 2 1 1
-todo probe uav 0 (0) u32(0x14321)
-todo probe uav 0 (1) u32(0x14321)
-todo probe uav 0 (2) u32(0x14321)
-todo probe uav 0 (3) u32(0x14321)
-todo probe uav 0 (4) u32(0x24321)
-todo probe uav 0 (5) u32(0x24321)
-todo probe uav 0 (6) u32(0x24321)
-todo probe uav 0 (7) u32(0x24321)
+todo(sm<6) dispatch 2 1 1
+probe uav 0 (0) u32(0x14321)
+probe uav 0 (1) u32(0x14321)
+probe uav 0 (2) u32(0x14321)
+probe uav 0 (3) u32(0x14321)
+probe uav 0 (4) u32(0x24321)
+probe uav 0 (5) u32(0x24321)
+probe uav 0 (6) u32(0x24321)
+probe uav 0 (7) u32(0x24321)
 
 [require]
 shader model >= 6.2