diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index c65a088537c..3674cfa4e57 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -5301,6 +5301,7 @@ static const SHADER_HANDLER shader_arb_instruction_handler_table[WINED3DSIH_TABL
     /* WINED3DSIH_RET                   */ shader_hw_ret,
     /* WINED3DSIH_ROUND_NI              */ NULL,
     /* WINED3DSIH_ROUND_PI              */ NULL,
+    /* WINED3DSIH_ROUND_Z               */ NULL,
     /* WINED3DSIH_RSQ                   */ shader_hw_scalar_op,
     /* WINED3DSIH_SAMPLE                */ NULL,
     /* WINED3DSIH_SAMPLE_GRAD           */ NULL,
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index d27f47b3e16..697f5e93388 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -8075,6 +8075,7 @@ static const SHADER_HANDLER shader_glsl_instruction_handler_table[WINED3DSIH_TAB
     /* WINED3DSIH_RET                   */ shader_glsl_ret,
     /* WINED3DSIH_ROUND_NI              */ shader_glsl_map2gl,
     /* WINED3DSIH_ROUND_PI              */ NULL,
+    /* WINED3DSIH_ROUND_Z               */ NULL,
     /* WINED3DSIH_RSQ                   */ shader_glsl_scalar_op,
     /* WINED3DSIH_SAMPLE                */ shader_glsl_sample,
     /* WINED3DSIH_SAMPLE_GRAD           */ NULL,
diff --git a/dlls/wined3d/shader.c b/dlls/wined3d/shader.c
index 065bf4afc0d..53f90af9a8d 100644
--- a/dlls/wined3d/shader.c
+++ b/dlls/wined3d/shader.c
@@ -129,6 +129,7 @@ static const char * const shader_opcode_names[] =
     /* WINED3DSIH_RET                   */ "ret",
     /* WINED3DSIH_ROUND_NI              */ "round_ni",
     /* WINED3DSIH_ROUND_PI              */ "round_pi",
+    /* WINED3DSIH_ROUND_Z               */ "round_z",
     /* WINED3DSIH_RSQ                   */ "rsq",
     /* WINED3DSIH_SAMPLE                */ "sample",
     /* WINED3DSIH_SAMPLE_GRAD           */ "sample_d",
diff --git a/dlls/wined3d/shader_sm4.c b/dlls/wined3d/shader_sm4.c
index 63aca2b53a6..bad656777bb 100644
--- a/dlls/wined3d/shader_sm4.c
+++ b/dlls/wined3d/shader_sm4.c
@@ -131,6 +131,7 @@ enum wined3d_sm4_opcode
     WINED3D_SM4_OP_RET                  = 0x3e,
     WINED3D_SM4_OP_ROUND_NI             = 0x41,
     WINED3D_SM4_OP_ROUND_PI             = 0x42,
+    WINED3D_SM4_OP_ROUND_Z              = 0x43,
     WINED3D_SM4_OP_RSQ                  = 0x44,
     WINED3D_SM4_OP_SAMPLE               = 0x45,
     WINED3D_SM4_OP_SAMPLE_LOD           = 0x48,
@@ -314,6 +315,7 @@ static const struct wined3d_sm4_opcode_info opcode_table[] =
     {WINED3D_SM4_OP_RET,                    WINED3DSIH_RET,                 "",     ""},
     {WINED3D_SM4_OP_ROUND_NI,               WINED3DSIH_ROUND_NI,            "F",    "F"},
     {WINED3D_SM4_OP_ROUND_PI,               WINED3DSIH_ROUND_PI,            "F",    "F"},
+    {WINED3D_SM4_OP_ROUND_Z,                WINED3DSIH_ROUND_Z,             "F",    "F"},
     {WINED3D_SM4_OP_RSQ,                    WINED3DSIH_RSQ,                 "F",    "F"},
     {WINED3D_SM4_OP_SAMPLE,                 WINED3DSIH_SAMPLE,              "U",    "FRS"},
     {WINED3D_SM4_OP_SAMPLE_LOD,             WINED3DSIH_SAMPLE_LOD,          "U",    "FRSF"},
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index bf471b9fce8..78a49dd1311 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -557,6 +557,7 @@ enum WINED3D_SHADER_INSTRUCTION_HANDLER
     WINED3DSIH_RET,
     WINED3DSIH_ROUND_NI,
     WINED3DSIH_ROUND_PI,
+    WINED3DSIH_ROUND_Z,
     WINED3DSIH_RSQ,
     WINED3DSIH_SAMPLE,
     WINED3DSIH_SAMPLE_GRAD,