diff --git a/libs/vkd3d-shader/dxbc.c b/libs/vkd3d-shader/dxbc.c
index 2beb2ccba2656a768c899a4b10ea46b5fee88846..8762094ed935080be7291a9d005381ddb4fe93f5 100644
--- a/libs/vkd3d-shader/dxbc.c
+++ b/libs/vkd3d-shader/dxbc.c
@@ -818,6 +818,7 @@ static const struct vkd3d_sm4_opcode_info opcode_table[] =
     {VKD3D_SM5_OP_DRCP,                             VKD3DSIH_DRCP,                             "d",    "d"},
     {VKD3D_SM5_OP_DTOI,                             VKD3DSIH_DTOI,                             "i",    "d"},
     {VKD3D_SM5_OP_DTOU,                             VKD3DSIH_DTOU,                             "u",    "d"},
+    {VKD3D_SM5_OP_ITOD,                             VKD3DSIH_ITOD,                             "d",    "i"},
 };
 
 static const enum vkd3d_shader_register_type register_type_table[] =
diff --git a/libs/vkd3d-shader/sm4.h b/libs/vkd3d-shader/sm4.h
index a88447d1ef51913d5faab5622e7e90c273e4d859..c04fa02bf60e69d3e0bad2ed0645072d5100e538 100644
--- a/libs/vkd3d-shader/sm4.h
+++ b/libs/vkd3d-shader/sm4.h
@@ -337,6 +337,7 @@ enum vkd3d_sm4_opcode
     VKD3D_SM5_OP_DRCP                             = 0xd4,
     VKD3D_SM5_OP_DTOI                             = 0xd6,
     VKD3D_SM5_OP_DTOU                             = 0xd7,
+    VKD3D_SM5_OP_ITOD                             = 0xd8,
 };
 
 enum vkd3d_sm4_instruction_modifier
diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index 3d00f83866d318a4fcae248a19046331df324baa..96caab50c685d0c1b20b9570b65f27b0776a6264 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -6786,6 +6786,7 @@ static SpvOp vkd3d_dxbc_compiler_map_alu_instruction(const struct vkd3d_shader_i
         {VKD3DSIH_INEG,       SpvOpSNegate},
         {VKD3DSIH_ISHL,       SpvOpShiftLeftLogical},
         {VKD3DSIH_ISHR,       SpvOpShiftRightArithmetic},
+        {VKD3DSIH_ITOD,       SpvOpConvertSToF},
         {VKD3DSIH_ITOF,       SpvOpConvertSToF},
         {VKD3DSIH_MUL,        SpvOpFMul},
         {VKD3DSIH_NOT,        SpvOpNot},
@@ -9542,6 +9543,7 @@ int vkd3d_dxbc_compiler_handle_instruction(struct vkd3d_dxbc_compiler *compiler,
         case VKD3DSIH_INEG:
         case VKD3DSIH_ISHL:
         case VKD3DSIH_ISHR:
+        case VKD3DSIH_ITOD:
         case VKD3DSIH_ITOF:
         case VKD3DSIH_MUL:
         case VKD3DSIH_NOT:
diff --git a/libs/vkd3d-shader/trace.c b/libs/vkd3d-shader/trace.c
index 0d5c06b585d6901852e77f122e520d1b29c10ae5..0dc18f4e0dc973cd45d05a229c052095dac4d28c 100644
--- a/libs/vkd3d-shader/trace.c
+++ b/libs/vkd3d-shader/trace.c
@@ -189,6 +189,7 @@ static const char * const shader_opcode_names[] =
     /* VKD3DSIH_INEG                             */ "ineg",
     /* VKD3DSIH_ISHL                             */ "ishl",
     /* VKD3DSIH_ISHR                             */ "ishr",
+    /* VKD3DSIH_ITOD                             */ "itod",
     /* VKD3DSIH_ITOF                             */ "itof",
     /* VKD3DSIH_LABEL                            */ "label",
     /* VKD3DSIH_LD                               */ "ld",
diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index fba3764c8eed3454347caed5300c52fc8da4b00d..aa04cb456c2163c94dc85dfd890e39c51574db3c 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -278,6 +278,7 @@ enum vkd3d_shader_opcode
     VKD3DSIH_INEG,
     VKD3DSIH_ISHL,
     VKD3DSIH_ISHR,
+    VKD3DSIH_ITOD,
     VKD3DSIH_ITOF,
     VKD3DSIH_LABEL,
     VKD3DSIH_LD,
diff --git a/tests/d3d12.c b/tests/d3d12.c
index 6091d540065a6fcf27375d4a2674ec861671fdd4..b6a773ec2126e3092388d4a7eacc251053708727 100644
--- a/tests/d3d12.c
+++ b/tests/d3d12.c
@@ -10031,7 +10031,7 @@ static void test_shader_instructions(void)
         {&ps_dtoi, {.d = {{      1.0}}}, {.i = {1, -1}}, true},
         {&ps_dtof, {.d = {{      1.5}}}, {.f = {1.5f, -1.5f}}, true},
         {&ps_utod, {.u = {{3, 0xffffffff}}}, {.d = {3.0,  4294967295.0}}, true, true},
-        {&ps_itod, {.u = {{3,    INT_MIN}}}, {.d = {3.0, -2147483648.0}}, true, true},
+        {&ps_itod, {.u = {{3,    INT_MIN}}}, {.d = {3.0, -2147483648.0}}, true},
         {&ps_ftod, {.f = {{-2.5f,  -2.5f}}}, {.d = {-2.5,  2.5}}, true},
         {&ps_dmul, {.d = {{ 1.5,    3.0}}},  {.d = { 4.5, -4.5}}, true},
         {&ps_ddiv, {.d = {{ 2.0,    4.0}}},  {.d = { 0.5,  2.0}}, true},