diff --git a/libs/vkd3d-shader/d3d_asm.c b/libs/vkd3d-shader/d3d_asm.c
index 4521bfabd..dc1678795 100644
--- a/libs/vkd3d-shader/d3d_asm.c
+++ b/libs/vkd3d-shader/d3d_asm.c
@@ -88,6 +88,7 @@ static const char * const shader_opcode_names[] =
     [VKD3DSIH_DCL_INTERFACE                   ] = "dcl_interface",
     [VKD3DSIH_DCL_OUTPUT                      ] = "dcl_output",
     [VKD3DSIH_DCL_OUTPUT_CONTROL_POINT_COUNT  ] = "dcl_output_control_point_count",
+    [VKD3DSIH_DCL_OUTPUT_SGV                  ] = "dcl_output_sgv",
     [VKD3DSIH_DCL_OUTPUT_SIV                  ] = "dcl_output_siv",
     [VKD3DSIH_DCL_OUTPUT_TOPOLOGY             ] = "dcl_outputtopology",
     [VKD3DSIH_DCL_RESOURCE_RAW                ] = "dcl_resource_raw",
@@ -1865,6 +1866,7 @@ static void shader_dump_instruction(struct vkd3d_d3d_asm_compiler *compiler,
         case VKD3DSIH_DCL_INPUT_PS_SGV:
         case VKD3DSIH_DCL_INPUT_SGV:
         case VKD3DSIH_DCL_INPUT_SIV:
+        case VKD3DSIH_DCL_OUTPUT_SGV:
         case VKD3DSIH_DCL_OUTPUT_SIV:
             shader_print_dst_param(compiler, " ", &ins->declaration.register_semantic.reg, true, "");
             shader_print_input_sysval_semantic(compiler, ", ", ins->declaration.register_semantic.sysval_semantic, "");
diff --git a/libs/vkd3d-shader/ir.c b/libs/vkd3d-shader/ir.c
index 7466f7a2d..900a1e063 100644
--- a/libs/vkd3d-shader/ir.c
+++ b/libs/vkd3d-shader/ir.c
@@ -1031,6 +1031,7 @@ static enum vkd3d_result vsir_program_lower_instructions(struct vsir_program *pr
             case VKD3DSIH_DCL_INPUT_PS:
             case VKD3DSIH_DCL_INPUT_PS_SGV:
             case VKD3DSIH_DCL_INPUT_PS_SIV:
+            case VKD3DSIH_DCL_OUTPUT_SGV:
             case VKD3DSIH_DCL_OUTPUT_SIV:
                 vkd3d_shader_instruction_make_nop(ins);
                 break;
diff --git a/libs/vkd3d-shader/tpf.c b/libs/vkd3d-shader/tpf.c
index 29b03871e..a7529c71f 100644
--- a/libs/vkd3d-shader/tpf.c
+++ b/libs/vkd3d-shader/tpf.c
@@ -261,6 +261,7 @@ enum vkd3d_sm4_opcode
     VKD3D_SM4_OP_DCL_INPUT_PS_SGV                 = 0x63,
     VKD3D_SM4_OP_DCL_INPUT_PS_SIV                 = 0x64,
     VKD3D_SM4_OP_DCL_OUTPUT                       = 0x65,
+    VKD3D_SM4_OP_DCL_OUTPUT_SGV                   = 0x66,
     VKD3D_SM4_OP_DCL_OUTPUT_SIV                   = 0x67,
     VKD3D_SM4_OP_DCL_TEMPS                        = 0x68,
     VKD3D_SM4_OP_DCL_INDEXABLE_TEMP               = 0x69,
@@ -1559,6 +1560,8 @@ static void init_sm4_lookup_tables(struct vkd3d_sm4_lookup_tables *lookup)
                 shader_sm4_read_dcl_input_ps_siv},
         {VKD3D_SM4_OP_DCL_OUTPUT,                       VKD3DSIH_DCL_OUTPUT,                       "",     "",
                 shader_sm4_read_declaration_dst},
+        {VKD3D_SM4_OP_DCL_OUTPUT_SGV,                   VKD3DSIH_DCL_OUTPUT_SGV,                   "",     "",
+                shader_sm4_read_declaration_register_semantic},
         {VKD3D_SM4_OP_DCL_OUTPUT_SIV,                   VKD3DSIH_DCL_OUTPUT_SIV,                   "",     "",
                 shader_sm4_read_declaration_register_semantic},
         {VKD3D_SM4_OP_DCL_TEMPS,                        VKD3DSIH_DCL_TEMPS,                        "",     "",
diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index 833fed808..843724d32 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -337,6 +337,7 @@ enum vkd3d_shader_opcode
     VKD3DSIH_DCL_INTERFACE,
     VKD3DSIH_DCL_OUTPUT,
     VKD3DSIH_DCL_OUTPUT_CONTROL_POINT_COUNT,
+    VKD3DSIH_DCL_OUTPUT_SGV,
     VKD3DSIH_DCL_OUTPUT_SIV,
     VKD3DSIH_DCL_OUTPUT_TOPOLOGY,
     VKD3DSIH_DCL_RESOURCE_RAW,