diff --git a/libs/vkd3d-shader/dxil.c b/libs/vkd3d-shader/dxil.c
index 79e6ed0cc..74ff9a64f 100644
--- a/libs/vkd3d-shader/dxil.c
+++ b/libs/vkd3d-shader/dxil.c
@@ -4827,6 +4827,8 @@ static enum vkd3d_shader_opcode map_dx_unary_op(enum dx_intrinsic_opcode op)
             return VKD3DSIH_ISINF;
         case DX_ISFINITE:
             return VKD3DSIH_ISFINITE;
+        case DX_COS:
+            return VKD3DSIH_COS;
         case DX_TAN:
             return VKD3DSIH_TAN;
         case DX_ACOS:
@@ -6602,7 +6604,7 @@ static const struct sm6_dx_opcode_info sm6_dx_op_table[] =
     [DX_BUFFER_UPDATE_COUNTER         ] = {"i", "H8",   sm6_parser_emit_dx_buffer_update_counter},
     [DX_CALCULATE_LOD                 ] = {"f", "HHfffb", sm6_parser_emit_dx_calculate_lod},
     [DX_CBUFFER_LOAD_LEGACY           ] = {"o", "Hi",   sm6_parser_emit_dx_cbuffer_load},
-    [DX_COS                           ] = {"g", "R",    sm6_parser_emit_dx_sincos},
+    [DX_COS                           ] = {"g", "R",    sm6_parser_emit_dx_unary},
     [DX_COUNT_BITS                    ] = {"i", "m",    sm6_parser_emit_dx_unary},
     [DX_COVERAGE                      ] = {"i", "",     sm6_parser_emit_dx_coverage},
     [DX_CREATE_HANDLE                 ] = {"H", "ccib", sm6_parser_emit_dx_create_handle},
diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index d62ca5b2a..8bb7c9cac 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -62,6 +62,7 @@ const char *vsir_opcode_get_name(enum vkd3d_shader_opcode op, const char *error)
         [VKD3DSIH_CHECK_ACCESS_FULLY_MAPPED       ] = "check_access_fully_mapped",
         [VKD3DSIH_CMP                             ] = "cmp",
         [VKD3DSIH_CND                             ] = "cnd",
+        [VKD3DSIH_COS                             ] = "cos",
         [VKD3DSIH_CONTINUE                        ] = "continue",
         [VKD3DSIH_CONTINUEP                       ] = "continuec",
         [VKD3DSIH_COUNTBITS                       ] = "countbits",
diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index 0e855a884..a5c264431 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -7734,6 +7734,7 @@ static enum GLSLstd450 spirv_compiler_map_ext_glsl_instruction(
         {VKD3DSIH_ACOS,            GLSLstd450Acos},
         {VKD3DSIH_ASIN,            GLSLstd450Asin},
         {VKD3DSIH_ATAN,            GLSLstd450Atan},
+        {VKD3DSIH_COS,             GLSLstd450Cos},
         {VKD3DSIH_DFMA,            GLSLstd450Fma},
         {VKD3DSIH_DMAX,            GLSLstd450NMax},
         {VKD3DSIH_DMIN,            GLSLstd450NMin},
@@ -10737,6 +10738,7 @@ static int spirv_compiler_handle_instruction(struct spirv_compiler *compiler,
         case VKD3DSIH_ACOS:
         case VKD3DSIH_ASIN:
         case VKD3DSIH_ATAN:
+        case VKD3DSIH_COS:
         case VKD3DSIH_HCOS:
         case VKD3DSIH_HSIN:
         case VKD3DSIH_HTAN:
diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index f806a191e..bd5cfe5a3 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -311,6 +311,7 @@ enum vkd3d_shader_opcode
     VKD3DSIH_CND,
     VKD3DSIH_CONTINUE,
     VKD3DSIH_CONTINUEP,
+    VKD3DSIH_COS,
     VKD3DSIH_COUNTBITS,
     VKD3DSIH_CRS,
     VKD3DSIH_CUT,