diff --git a/dlls/wined3d/arb_program_shader.c b/dlls/wined3d/arb_program_shader.c
index e58425afc73..d89fdf324b3 100644
--- a/dlls/wined3d/arb_program_shader.c
+++ b/dlls/wined3d/arb_program_shader.c
@@ -5302,6 +5302,7 @@ static const SHADER_HANDLER shader_arb_instruction_handler_table[WINED3DSIH_TABL
     /* WINED3DSIH_IMIN                             */ NULL,
     /* WINED3DSIH_IMM_ATOMIC_ALLOC                 */ NULL,
     /* WINED3DSIH_IMM_ATOMIC_CONSUME               */ NULL,
+    /* WINED3DSIH_IMM_ATOMIC_OR                    */ NULL,
     /* WINED3DSIH_IMM_ATOMIC_XOR                   */ NULL,
     /* WINED3DSIH_IMUL                             */ NULL,
     /* WINED3DSIH_INE                              */ NULL,
diff --git a/dlls/wined3d/glsl_shader.c b/dlls/wined3d/glsl_shader.c
index 455756cbc4b..672d6dd26a7 100644
--- a/dlls/wined3d/glsl_shader.c
+++ b/dlls/wined3d/glsl_shader.c
@@ -8965,6 +8965,7 @@ static const SHADER_HANDLER shader_glsl_instruction_handler_table[WINED3DSIH_TAB
     /* WINED3DSIH_IMIN                             */ shader_glsl_map2gl,
     /* WINED3DSIH_IMM_ATOMIC_ALLOC                 */ NULL,
     /* WINED3DSIH_IMM_ATOMIC_CONSUME               */ NULL,
+    /* WINED3DSIH_IMM_ATOMIC_OR                    */ NULL,
     /* WINED3DSIH_IMM_ATOMIC_XOR                   */ NULL,
     /* WINED3DSIH_IMUL                             */ shader_glsl_imul,
     /* WINED3DSIH_INE                              */ shader_glsl_relop,
diff --git a/dlls/wined3d/shader.c b/dlls/wined3d/shader.c
index ae996c0c379..0f895138c6d 100644
--- a/dlls/wined3d/shader.c
+++ b/dlls/wined3d/shader.c
@@ -143,6 +143,7 @@ static const char * const shader_opcode_names[] =
     /* WINED3DSIH_IMIN                             */ "imin",
     /* WINED3DSIH_IMM_ATOMIC_ALLOC                 */ "imm_atomic_alloc",
     /* WINED3DSIH_IMM_ATOMIC_CONSUME               */ "imm_atomic_consume",
+    /* WINED3DSIH_IMM_ATOMIC_OR                    */ "imm_atomic_or",
     /* WINED3DSIH_IMM_ATOMIC_XOR                   */ "imm_atomic_xor",
     /* WINED3DSIH_IMUL                             */ "imul",
     /* WINED3DSIH_INE                              */ "ine",
diff --git a/dlls/wined3d/shader_sm4.c b/dlls/wined3d/shader_sm4.c
index b0561183835..9a36e8322c4 100644
--- a/dlls/wined3d/shader_sm4.c
+++ b/dlls/wined3d/shader_sm4.c
@@ -257,6 +257,7 @@ enum wined3d_sm4_opcode
     WINED3D_SM5_OP_ATOMIC_IADD                      = 0xad,
     WINED3D_SM5_OP_IMM_ATOMIC_ALLOC                 = 0xb2,
     WINED3D_SM5_OP_IMM_ATOMIC_CONSUME               = 0xb3,
+    WINED3D_SM5_OP_IMM_ATOMIC_OR                    = 0xb6,
     WINED3D_SM5_OP_IMM_ATOMIC_XOR                   = 0xb7,
     WINED3D_SM5_OP_SYNC                             = 0xbe,
 };
@@ -906,6 +907,7 @@ static const struct wined3d_sm4_opcode_info opcode_table[] =
     {WINED3D_SM5_OP_ATOMIC_IADD,                      WINED3DSIH_ATOMIC_IADD,                      "U",    "ii"},
     {WINED3D_SM5_OP_IMM_ATOMIC_ALLOC,                 WINED3DSIH_IMM_ATOMIC_ALLOC,                 "u",    "U"},
     {WINED3D_SM5_OP_IMM_ATOMIC_CONSUME,               WINED3DSIH_IMM_ATOMIC_CONSUME,               "u",    "U"},
+    {WINED3D_SM5_OP_IMM_ATOMIC_OR,                    WINED3DSIH_IMM_ATOMIC_OR,                    "uU",   "iu"},
     {WINED3D_SM5_OP_IMM_ATOMIC_XOR,                   WINED3DSIH_IMM_ATOMIC_XOR,                   "uU",   "iu"},
     {WINED3D_SM5_OP_SYNC,                             WINED3DSIH_SYNC,                             "",     "",
             shader_sm5_read_sync},
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 6804103e16a..b63569fb531 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -669,6 +669,7 @@ enum WINED3D_SHADER_INSTRUCTION_HANDLER
     WINED3DSIH_IMIN,
     WINED3DSIH_IMM_ATOMIC_ALLOC,
     WINED3DSIH_IMM_ATOMIC_CONSUME,
+    WINED3DSIH_IMM_ATOMIC_OR,
     WINED3DSIH_IMM_ATOMIC_XOR,
     WINED3DSIH_IMUL,
     WINED3DSIH_INE,