diff --git a/src/tint/lang/core/builtin_type.cc b/src/tint/lang/core/builtin_type.cc
index 190cf7f..4fddb22 100644
--- a/src/tint/lang/core/builtin_type.cc
+++ b/src/tint/lang/core/builtin_type.cc
@@ -141,6 +141,9 @@
     if (str == "i32") {
         return BuiltinType::kI32;
     }
+    if (str == "input_attachment") {
+        return BuiltinType::kInputAttachment;
+    }
     if (str == "mat2x2") {
         return BuiltinType::kMat2X2;
     }
@@ -403,6 +406,8 @@
             return "f32";
         case BuiltinType::kI32:
             return "i32";
+        case BuiltinType::kInputAttachment:
+            return "input_attachment";
         case BuiltinType::kMat2X2:
             return "mat2x2";
         case BuiltinType::kMat2X2F:
diff --git a/src/tint/lang/core/builtin_type.h b/src/tint/lang/core/builtin_type.h
index ac0a22e..0f7a9f0 100644
--- a/src/tint/lang/core/builtin_type.h
+++ b/src/tint/lang/core/builtin_type.h
@@ -79,6 +79,7 @@
     kF16,
     kF32,
     kI32,
+    kInputAttachment,
     kMat2X2,
     kMat2X2F,
     kMat2X2H,
@@ -195,6 +196,7 @@
     "f16",
     "f32",
     "i32",
+    "input_attachment",
     "mat2x2",
     "mat2x2f",
     "mat2x2h",
diff --git a/src/tint/lang/core/builtin_type_bench.cc b/src/tint/lang/core/builtin_type_bench.cc
index f963bc7..1e5b673 100644
--- a/src/tint/lang/core/builtin_type_bench.cc
+++ b/src/tint/lang/core/builtin_type_bench.cc
@@ -276,447 +276,454 @@
         "iJJ",
         "UfCDD",
         "i3g",
-        "CCtx",
-        "mt2x2",
-        "mat2x__",
+        "inCCt_atachmen",
+        "iput_attachment",
+        "input__attachmenI",
+        "input_attachment",
+        "inpt_PttttaNment",
+        "input_attddc3ment",
+        "inKutyyattahment",
+        "mtx",
+        "mat03nn",
+        "mvtnCuuK",
         "mat2x2",
-        "attxPP",
-        "mdd32x2",
-        "yyK2x2",
-        "m2uu",
-        "ma0nnx2i",
-        "KanuuCC2f",
-        "mat2x2f",
-        "mlX2x2f",
-        "oat2pp2f",
-        "wwat22f",
+        "lXatx2",
+        "matppxo",
+        "maw2x2",
         "matguum",
         "mt2ma2",
-        "Tat2xZRRh",
+        "Tat2xZRRf",
+        "mat2x2f",
+        "ma8T2xOf",
+        "m0at2x2f",
+        "mBBt2x2f",
+        "at2ppM",
+        "matOO2h",
+        "mGG2x2G",
         "mat2x2h",
-        "ma8T2xOh",
-        "m0at2x2h",
-        "mBBt2x2h",
-        "Matpp",
-        "Oat2x3",
-        "GGG2x3",
+        "mHHt2x11h",
+        "eat2x6Fh",
+        "atx2h",
+        "mKl2ii3",
+        "at2x3",
+        "9IIat2x3",
         "mat2x3",
-        "mHHt2113",
-        "mateF63",
-        "matx",
-        "mat2ii3l",
-        "mt2x3f",
-        "IIvvt2x39",
-        "mat2x3f",
-        "mat23f",
-        "mat2h3f",
-        "mllt2xPzz",
-        "t3h",
-        "mtffxqqh",
+        "ma2x3",
+        "hat2x3",
+        "zzPt2xll",
+        "t3f",
+        "mtffxqqf",
         "mtJJx3dd",
-        "mat2x3h",
-        "mzz2X3h",
+        "mat2x3f",
+        "mzz2X3f",
         "matx32",
-        "maN2yy3h",
-        "atxO",
-        "rauExP",
-        "meet22dd",
+        "maN2yy3f",
+        "mt2O3",
+        "uZtrx3h",
+        "latdde23h",
+        "mat2x3h",
+        "matVVh",
+        "1IIt2x3",
+        "mat2xbh",
+        "t7i4",
+        "maio2x4",
+        "a5x4",
         "mat2x4",
-        "maV92",
-        "maI2x1",
-        "mab2x4",
-        "matzf",
-        "mao2ii4f",
-        "mat45",
+        "St2x4",
+        "m22tx",
+        "maC7G4",
+        "maff284f",
+        "t2x4f",
+        "SSatJJx4f",
         "mat2x4f",
-        "at2xSf",
-        "mat22f",
-        "maG1C4f",
-        "maff284h",
-        "t2x4h",
-        "SSatJJx4h",
+        "atx9f",
+        "maJJbbTT4f",
+        "66a2xf",
+        "ut2x466",
+        "aW2x4h",
+        "mtx4h",
         "mat2x4h",
-        "atx9h",
-        "maJJbbTT4h",
-        "66a2xh",
-        "ma663u",
-        "Wa3x2",
-        "ma32",
+        "mOt2x4",
+        "THat2xBB",
+        "maRR2xh",
+        "VLLa30",
+        "at3KOO",
+        "awg3x2",
         "mat3x2",
-        "ma3x2",
-        "rat3x2",
-        "m2t3xB",
-        "matxBBf",
-        "maRR3xf",
-        "maVV0Lf",
-        "mat3x2f",
-        "a3OOK2f",
-        "magw3xf",
-        "hht3L2f",
-        "aKii3xh",
-        "ma3x2h",
+        "maLhhp",
+        "iitEx2",
+        "at3x2",
         "UUa3882",
-        "mat3x2h",
-        "rrvvt3x2h",
+        "rrvvt3x2f",
         "m3xwmm",
-        "j443x2h",
-        "matXx3",
-        "m8t3x3",
-        "mat3vEE",
+        "mat3x2f",
+        "j443x2f",
+        "matXx2f",
+        "mat8x2f",
+        "mvEE3x2h",
+        "mai93zz",
+        "mQQJJnxGGh",
+        "mat3x2h",
+        "mass3x2h",
+        "matKxPh",
+        "mat3tth",
+        "atx3",
+        "maMM3x3",
+        "mJ0t3x3",
         "mat3x3",
-        "mzzi3x",
-        "maGGQ3JJ3",
-        "mat3ss3",
-        "matKxPf",
-        "mat3ttf",
-        "mt3x3",
-        "mat3x3f",
-        "mMMt3x3f",
-        "maJ03x3f",
-        "V8x3",
-        "maKggx3hh",
-        "maf3x3h",
-        "matQ7x3h",
-        "mat3x3h",
-        "mat3YYh",
+        "V38",
+        "hggat3x3",
+        "maf3x3",
+        "matQ7x3f",
+        "mat3YYf",
         "mak3x3",
+        "mat3x3f",
         "man3x2",
-        "mFFx4",
-        "GGatPPuUU",
-        "mEEFa4",
+        "ma3FFf",
+        "uGGtIUPP3f",
+        "EEvFx3h",
+        "ddtBBDDeh",
+        "m55tMccE3",
+        "mat3x3h",
+        "aKKx3",
+        "mat3x3R",
+        "maDx39",
+        "mt3x4",
+        "aIt34",
+        "mat3x77",
         "mat3x4",
-        "mBet3dd4",
-        "55atExcc",
-        "txKK",
-        "mat3x4R",
-        "maDx49",
-        "mt3x4f",
+        "matIx4",
+        "matd4",
+        "mt3x4",
+        "mtt4f",
+        "ma3XX3x4f",
+        "Eat34f",
         "mat3x4f",
-        "aaat3I",
-        "m77t3x4f",
-        "matIx4f",
-        "md3x4h",
-        "mat34h",
-        "mtt4h",
-        "mat3x4h",
-        "ma3XX3x4h",
-        "Eat34h",
         "maXX3x4",
-        "mxBt4x2",
-        "Wt4x",
-        "mat66x2",
+        "matxBx4f",
+        "m3x4f",
+        "mat3x466",
+        "matxv0",
+        "txh",
+        "mat3x4h",
+        "mpt3xh",
+        "at114h",
+        "EaJ3yBBh",
+        "mqIm4x2",
+        "ma4F2",
+        "aY4x2",
         "mat4x2",
-        "atTv0",
-        "kt",
-        "mpt4x",
-        "at112f",
-        "EaJ4yBBf",
-        "mqIm4x2f",
+        "matDHh2",
+        "24H2",
+        "m4x2",
+        "matx2f",
+        "matx2f",
+        "matddx2f",
         "mat4x2f",
-        "ma4xFf",
-        "Yt4x2f",
-        "mHHtDh2f",
-        "Ht22h",
-        "matx2",
-        "matx2h",
+        "Oat4x2f",
+        "atBbb2",
+        "m004x2f",
+        "mat4xhh",
+        "mgYtx2h",
+        "mat4O2h",
         "mat4x2h",
-        "matx2h",
-        "matddx2h",
-        "Oat4x2h",
-        "bbtB3",
-        "m00tx3",
-        "hat4x3",
+        "ah4xh",
+        "fpaEEx2h",
+        "mavx2h",
+        "at4zz3",
+        "mat4x",
+        "OiiJt4",
         "mat4x3",
-        "matgYx",
-        "Oat4x3",
-        "mhx3",
-        "fpaEEx3f",
-        "mavx3f",
-        "mzztx3f",
+        "mGt4xf",
+        "mTT224x3",
+        "lat4x3",
+        "bat4x3f",
+        "BBatx3f",
+        "PPIXt4S3f",
         "mat4x3f",
-        "ma4x3f",
-        "OOaJxii",
-        "mft4G3f",
-        "mat4x322T",
-        "datlx3h",
-        "bat4x3h",
+        "mjjt4x3f",
+        "_at4xccf",
+        "ax6z4xSSf",
+        "a4xG",
+        "mx44N3v",
+        "atAAx00p",
         "mat4x3h",
-        "BBatx3h",
-        "PPIXt4S3h",
-        "mjjt4x3h",
-        "macc4_4",
-        "SS6zz4xx",
-        "mtx",
+        "eeytyh",
+        "mabWWx0h",
+        "ttatMMxmh",
+        "4d4",
+        "mav_x",
+        "mVt4xEE",
         "mat4x4",
-        "mxxtvN",
-        "AA00t44",
-        "tyexy",
-        "mabWWx0f",
-        "ttatMMxmf",
-        "madf",
+        "m4t4x4",
+        "mVVtgxX",
+        "oat4V4",
+        "ma4x4f",
+        "KKattxf",
+        "G4xf",
         "mat4x4f",
-        "mat_4f",
-        "Vat4EE4f",
-        "mat44f",
-        "mRIxah",
-        "ma4mmh",
-        "at4x4p",
+        "ma4x4",
+        "mad4x4f",
+        "CCat4xPtf",
+        "matx4",
+        "m5t4x4h",
+        "m9jtffx4h",
         "mat4x4h",
-        "mat4xh",
-        "aaxh",
-        "mad4x4h",
-        "pCPtd",
-        "p",
-        "5tr",
+        "matRvxXXh",
+        "ctx4h",
+        "XX8t5x4",
+        "t",
+        "ppcc",
+        "vtr",
         "ptr",
-        "ff99j",
-        "YYvXR",
-        "r",
-        "XX8m5le",
-        "mpler",
-        "sccmlppr",
+        "EESS",
+        "p",
+        "",
+        "saplwwr",
+        "sa99plddr",
+        "99amplP",
         "sampler",
-        "sampver",
-        "EESSmplr",
-        "smplr",
-        "samplecomp_risa",
-        "sampler_co_prwwson",
-        "samplerdd99omparison",
+        "saKKler",
+        "smDDooeM",
+        "smlei",
+        "samler_comparqon",
+        "samplercmparis0LLn",
+        "snvvpler_com66arison",
         "sampler_comparison",
-        "ampler_o99paPPison",
-        "saplerKKcomparison",
-        "saMpler_oomDDarison",
-        "teiie_1B",
-        "txureq1d",
-        "txt00rLL_d",
+        "samplen_comparison",
+        "samlercompeerixxon",
+        "sONNpler_comparCCson",
+        "txture_1d",
+        "tex4uae_1d",
+        "extuNNe_1NN",
         "texture_1d",
-        "tnxture_16vv",
-        "trrxtur_nd",
-        "xxture_eed",
-        "CCNOxture_2d",
-        "txture_2d",
-        "tex4uae_2d",
+        "texture1d",
+        "tuxtre1d",
+        "textErYYS1A",
+        "tex0ure_2d",
+        "texaaure_2d",
+        "tqqmmtur_d",
         "texture_2d",
-        "extuNNe_2NN",
-        "texture2d",
-        "tuxtre2d",
-        "teYYtuAe_2d_arESy",
-        "texture_2d_0rray",
-        "texture_2d_aarray",
-        "texture_2d_array",
-        "texturmm_2d_arra",
-        "texture_2d_aray",
-        "teEuUUe_2darray",
+        "textue_2d",
+        "tUUxtureE",
         "tKKture_Dd",
-        "text__r0_3d",
-        "tAtuel3p",
+        "0exture_2d_a__rat",
+        "tpturl_2_Array",
+        "txture_2M_array",
+        "texture_2d_array",
+        "BBexture_2d_array",
+        "nnxtbbre_2_a99ray",
+        "texturEE2d_aAAray",
+        "tex66ur5_3d",
+        "tHxture_3d",
+        "teHHuxe_3d",
         "texture_3d",
-        "textue_3d",
-        "texturBB_3d",
-        "nnbb99re_3d",
-        "AAEExture_cub",
-        "t66Ttu5e_cube",
-        "textuHe_cube",
+        "tzxturny_0d",
+        "teture_3d",
+        "Hexture3k",
+        "textur_cubc",
+        "trrxtoorecbe",
+        "textreJJcub",
         "texture_cube",
-        "textrexxHcub",
-        "tzx0uryy_cnbe",
-        "texture_cue",
-        "texurH_kube_array",
-        "exture_cube_array",
-        "ooexrrre_cbe_array",
+        "0Cxture_cube",
+        "99eFtureAAcbx",
+        "textcre_cube",
+        "Sexture_cube_array",
+        "txtureBBcobe_arras",
+        "teture_cube_array",
         "texture_cube_array",
-        "textre_cubJJarray",
-        "tCCxtu0e_cube_arry",
-        "texturAAcxbe99aFray",
-        "textcre_depth_2d",
-        "texture_Septh_2d",
-        "textureodpthBB2d",
+        "texturemmebe_array",
+        "tQQturPP_cube_arragg",
+        "textr_cubBrray",
+        "teKKNllre_eth_2d",
+        "texture_ephrr2d",
+        "rppture_depth_2d",
         "texture_depth_2d",
-        "texture_dept_2d",
-        "textummedepth_2d",
-        "toxture_ggeQQtPP2d",
-        "tetur_dptB_2d_rray",
-        "texNure_deKKh2d_arrlly",
-        "teture_dpth_2d_arrray",
+        "texture_deyPth_2d",
+        "extue_dZZpth_ccd",
+        "texure_depth_2",
+        "textu00e_depth_2d_array",
+        "tPJxture_BBsspth_2d_arry",
+        "teffture_wwepth_2dJJarra",
         "texture_depth_2d_array",
-        "texture_epth_ppd_array",
-        "teyturPP_depth_2d_array",
-        "texture_ZZptcc_2d_arry",
-        "txtue_depth_cube",
-        "texture00depth_cube",
-        "texPPuBB_deJth_cusse",
+        "Iextu1e_dpth_2d_arraXX",
+        "extur_depth2_arry",
+        "texture_depth_2_array",
+        "tuxtreKKdepth_cube",
+        "44edture_depmh_ube",
+        "pexture_deoth_cube",
         "texture_depth_cube",
-        "texJJre_dffpwwh_fube",
-        "textIre_depXXh_cub",
-        "textur_ph_cue",
-        "textue_depth_cube_array",
-        "tKKxtue_depth_cube_array",
-        "teture_d44ptm_cube_adray",
+        "textre_djphhhNNcHHbe",
+        "textu33e_depth_EuwwUU",
+        "texture_dethuucbe",
+        "excurrr_depddh_cube_array",
+        "2exturePPttpth_cube_array",
+        "texture_depthwwcub1sarray",
         "texture_depth_cube_array",
-        "pexture_deoth_cube_array",
-        "thhHxtureNdepth_cubejarray",
-        "texwwuUUe_depthEc33be_array",
-        "texture_dept_multiuuampled_2",
-        "ddextKre_depth_ultisampcerr_2d",
-        "textuPPe_depr_multttsample2_2d",
+        "nnexture_depthcc11be_array",
+        "texture_depthcube_array",
+        "texture_depth_cube_arry",
+        "texture_deIth_multsa66pleaaSS2d",
+        "texture_depth_mDltisamEEld_2d",
+        "texture_Iepth_multiccamRleV_2d",
         "texture_depth_multisampled_2d",
-        "1exture_depth_wwsltisampled_2d",
-        "textuce_depth_mnnltisamp11ed_2d",
-        "texture_depth_multisapled_2d",
-        "texture_externl",
-        "teSS66ue_exaaeInal",
-        "textuEEe_extenal",
+        "texture_dephmultisampled92d",
+        "texthraa_depth_multsampled_2d",
+        "texture_depth_SultisaLLped_2d",
+        "txfure_ertermma",
+        "teVturem4xqerna",
+        "textu___extenal",
         "texture_external",
-        "ccexture_exVerIRl",
-        "te9tue_extrnal",
-        "taaxture_exterha",
-        "texture_multisamLLeS_2d",
-        "tefurmm_mutisampled_2d",
-        "texture_mul4isampld_qV",
+        "texurQ_eternal",
+        "textureddetRErnal",
+        "text9re_extenal",
+        "t0xtre_multisamCCe_2d",
+        "texure_zulisampled_2d",
+        "texccure_multisampled_2d",
         "texture_multisampled_2d",
-        "texture_multisa_pled_d",
-        "texure_multisampledQd",
-        "texRRuremultisampledEd2d",
-        "textur_st9rage_1d",
-        "tCCx0ure_strag_1",
-        "textuezstorae_1d",
+        "tOxture_mu_tisampled2QQ",
+        "exture_multsampledtt2d",
+        "textCCEe_mult33samzzled_ppd",
+        "textudde_storaghh_1d",
+        "_etur77_66torage_1d",
+        "texture_storaPe_1d",
         "texture_storage_1d",
-        "texccure_storage_1d",
-        "textureOQQ_orge_1d",
-        "teturettstrage_1d",
-        "textCCrepzzstEr33ge_2d",
-        "textudde_storaghh_2d",
-        "_etur77_66torage_2d",
+        "twxture_storage_1d",
+        "textur_straguu_1",
+        "texture_storaXXe_6d",
+        "textRRr_sorag_2d",
+        "textrestVVrag12d",
+        "texture_HHtorGGge_2d",
         "texture_storage_2d",
-        "texture_storaPe_2d",
-        "twxture_storage_2d",
-        "textur_straguu_2",
-        "textureXXstorage_6d_array",
-        "extuRRestorage_2d_aray",
-        "txtre_storage_2dVVarr1",
+        "tFFxture_storMge_7d",
+        "texture_storage_d",
+        "3xTugge_stoage_2d",
+        "text_rP_Qtorage12d_arrKKy",
+        "tExture_strage_2d_array",
+        "extMre_storage_d_array",
         "texture_storage_2d_array",
-        "GGexture_storHHge_2d_array",
-        "MFFxt7re_storage_2d_array",
-        "texture_storage_d_array",
-        "3xTugge_stoage_3d",
-        "texturP_QtKKrag1__d",
-        "textre_storageE3d",
+        "texturGGst77ragX_2d_SSrray",
+        "textturFF_storae_2d_arraK",
+        "textuoe_storage_2dssZarrUUy",
+        "texturestorage_3d",
+        "telture_storage_3d",
+        "texture_htorage_3d",
         "texture_storage_3d",
-        "tMture_storage_d",
-        "t77xture_sGGorSSe_3d",
-        "txtttre_storage_3FF",
-        "uZZss2",
-        "u2",
-        "u3l",
+        "texturTTKstorage_d",
+        "texturww_storagee3",
+        "textureKsjjragvv_3d",
+        "Y2",
+        "EEI",
+        "u3QQ",
         "u32",
-        "u3h",
-        "uTT",
-        "ww2",
-        "vKvjj",
-        "vYY",
-        "EcI2",
+        "P",
+        "H3ff",
+        "u3n",
+        "Fc66",
+        "ssech",
+        "llFec",
         "vec2",
-        "vecQQ",
-        "Pc",
-        "veffH",
-        "vec2n",
-        "g6F2f",
-        "vssh8f",
-        "vec2f",
-        "veFllf",
-        "00e2j",
-        "gec2f",
-        "vece",
-        "ffc2h",
+        "jj20",
+        "veg2",
+        "vce",
+        "ffc2f",
         "ve",
-        "vec2h",
-        "ve2h",
-        "vqc2h",
+        "ve2f",
+        "vec2f",
+        "vqc2f",
         "AAe",
-        "ec2i",
+        "ec2f",
         "vec2j",
-        "ZZec2i",
-        "vec2i",
+        "ZZec2h",
         "PPecII2",
-        "ZZec2i",
-        "vnnc2i",
+        "vec2h",
+        "ZZec2h",
+        "vnnc2h",
         "HekkZ222",
         "ec2",
         "RcNQQ",
-        "vec2u",
-        "eDu",
+        "eDi",
+        "vec2i",
         "s3c2cu",
-        "vRR2u",
-        "vlJJ3",
-        "MM",
-        "vT63",
-        "vec3",
-        "QQec3",
-        "vuA",
-        "e3",
+        "vRR2i",
+        "vc2JJl",
+        "MMu",
+        "v66T7",
+        "vQQcJu",
+        "vec2u",
+        "Auc2",
+        "ve2",
         "yeq3",
-        "vec3xx",
-        "crr",
-        "vec3f",
-        "v99cf",
-        "vecf",
-        "ecHl",
-        "e_h",
+        "vxxc3",
+        "rr",
+        "e993",
+        "vec3",
+        "ec3",
+        "vlH",
+        "ec",
         "uec3",
-        "vc3h",
-        "vec3h",
-        "EEtmec3h",
+        "vc3f",
+        "EEtmec3f",
+        "vec3f",
         "vec",
         "ec3rr",
-        "xc3i",
+        "xc3f",
         "vezz",
         "vec3e",
-        "vec3i",
         "uc3Zp",
+        "vec3h",
         "00uc7TT",
         "vvJJ",
-        "vecQu",
+        "vecQh",
         "ve3R",
         "e",
-        "vec3u",
         "veprPP",
-        "xxeDD88u",
-        "lldmYYqqu",
-        "FFec4",
-        "rGecNN",
-        "Mecl",
+        "vec3i",
+        "xxeDD88i",
+        "lldmYYqqi",
+        "vFFc__",
+        "rrNNc3u",
+        "leM3u",
+        "c3",
+        "vec3u",
+        "xlc3u",
+        "ec3u",
+        "ae44u",
+        "WWeG4",
+        "vjjc",
+        "vjjc4",
         "vec4",
-        "c",
-        "qxl4",
+        "vj4",
         "ve4",
-        "ae44f",
-        "vec4WW",
-        "vecjj",
-        "vec4f",
-        "vjjc4f",
-        "vj1f",
-        "vc4f",
-        "vec499",
-        "vyVV4h",
+        "99ec4",
+        "vyVV4f",
         "ec4xZ",
-        "vec4h",
-        "v33vvh",
+        "v33vvf",
+        "vec4f",
         "vecs9",
         "veF4",
-        "uec4i",
+        "uec4f",
         "eIKK",
         "ve4J",
-        "vec4i",
-        "vSSCCXXi",
+        "vSSCCXXh",
+        "vec4h",
         "JecWW6ZZ",
         "ecd5",
         "vBBcBU",
         "JJ0c411",
-        "vecttu",
-        "vec4u",
+        "vectti",
         "vttc",
-        "veL4u",
-        "v1c4u",
+        "vec4i",
+        "veL4i",
+        "v1c4i",
+        "veww4i",
+        "ece",
+        "vc4u",
+        "vec4NN",
+        "vec4u",
+        "vUlRR__u",
+        "vecHu",
+        "vrCC4u",
     };
     for (auto _ : state) {
         for (auto* str : kStrings) {
diff --git a/src/tint/lang/core/builtin_type_test.cc b/src/tint/lang/core/builtin_type_test.cc
index 8fd8d6a..886a7e3 100644
--- a/src/tint/lang/core/builtin_type_test.cc
+++ b/src/tint/lang/core/builtin_type_test.cc
@@ -90,6 +90,7 @@
     {"f16", BuiltinType::kF16},
     {"f32", BuiltinType::kF32},
     {"i32", BuiltinType::kI32},
+    {"input_attachment", BuiltinType::kInputAttachment},
     {"mat2x2", BuiltinType::kMat2X2},
     {"mat2x2f", BuiltinType::kMat2X2F},
     {"mat2x2h", BuiltinType::kMat2X2H},
@@ -255,195 +256,198 @@
     {"0yz2", BuiltinType::kUndefined},
     {"iVP", BuiltinType::kUndefined},
     {"Cnn", BuiltinType::kUndefined},
-    {"AtqqHH2", BuiltinType::kUndefined},
-    {"at2x2", BuiltinType::kUndefined},
-    {"mafKK", BuiltinType::kUndefined},
-    {"ltgg2f", BuiltinType::kUndefined},
-    {"mat2xf", BuiltinType::kUndefined},
-    {"NTTtcx4f", BuiltinType::kUndefined},
-    {"ma7ppl2h", BuiltinType::kUndefined},
+    {"nput_attacAAmeHHt", BuiltinType::kUndefined},
+    {"nput_attachment", BuiltinType::kUndefined},
+    {"input_attKKfmen", BuiltinType::kUndefined},
+    {"Paggx", BuiltinType::kUndefined},
+    {"mat2x", BuiltinType::kUndefined},
+    {"maN2c42", BuiltinType::kUndefined},
+    {"ma7ppl2f", BuiltinType::kUndefined},
     {"mNNt2xg", BuiltinType::kUndefined},
-    {"uub2XX2h", BuiltinType::kUndefined},
-    {"mt2x3", BuiltinType::kUndefined},
-    {"m88xK", BuiltinType::kUndefined},
-    {"maqx3", BuiltinType::kUndefined},
-    {"m11t2x3f", BuiltinType::kUndefined},
-    {"22at2iif", BuiltinType::kUndefined},
-    {"at2x377", BuiltinType::kUndefined},
-    {"m2t2xNh", BuiltinType::kUndefined},
-    {"mVVt2x3h", BuiltinType::kUndefined},
-    {"FaWW2w11h", BuiltinType::kUndefined},
-    {"matww4", BuiltinType::kUndefined},
-    {"mat2D4", BuiltinType::kUndefined},
-    {"maKx4", BuiltinType::kUndefined},
-    {"mat21PPhf", BuiltinType::kUndefined},
-    {"mat24f", BuiltinType::kUndefined},
-    {"mYYt2x4f", BuiltinType::kUndefined},
+    {"uub2XX2f", BuiltinType::kUndefined},
+    {"matx2h", BuiltinType::kUndefined},
+    {"Qt882h", BuiltinType::kUndefined},
+    {"mt9q2h", BuiltinType::kUndefined},
+    {"mat2113", BuiltinType::kUndefined},
+    {"Ft2xi22", BuiltinType::kUndefined},
+    {"m7t2x3", BuiltinType::kUndefined},
+    {"m2t2xNf", BuiltinType::kUndefined},
+    {"mVVt2x3f", BuiltinType::kUndefined},
+    {"FaWW2w11f", BuiltinType::kUndefined},
+    {"mawwx3h", BuiltinType::kUndefined},
+    {"Dat2x3h", BuiltinType::kUndefined},
+    {"mt2x3K", BuiltinType::kUndefined},
+    {"11at2xPP", BuiltinType::kUndefined},
+    {"mat2x", BuiltinType::kUndefined},
+    {"mat2xYY", BuiltinType::kUndefined},
     {"mttHH4kk", BuiltinType::kUndefined},
-    {"mat2rr4h", BuiltinType::kUndefined},
-    {"WWas2x4h", BuiltinType::kUndefined},
-    {"maYx2", BuiltinType::kUndefined},
-    {"mq3f2", BuiltinType::kUndefined},
-    {"vvafu222", BuiltinType::kUndefined},
-    {"t3x2f", BuiltinType::kUndefined},
-    {"YYat3f", BuiltinType::kUndefined},
-    {"may3x2EYY", BuiltinType::kUndefined},
-    {"da3xMoh", BuiltinType::kUndefined},
+    {"mat2rr4f", BuiltinType::kUndefined},
+    {"WWas2x4f", BuiltinType::kUndefined},
+    {"Yt2x4h", BuiltinType::kUndefined},
+    {"mt2qfh", BuiltinType::kUndefined},
+    {"mav222xuh", BuiltinType::kUndefined},
+    {"mt32", BuiltinType::kUndefined},
+    {"maY32", BuiltinType::kUndefined},
+    {"YYa7y3E2", BuiltinType::kUndefined},
+    {"da3xMof", BuiltinType::kUndefined},
     {"matMMx2", BuiltinType::kUndefined},
-    {"mat3x55h", BuiltinType::kUndefined},
-    {"maN3", BuiltinType::kUndefined},
-    {"ma33x3", BuiltinType::kUndefined},
-    {"mt3x3", BuiltinType::kUndefined},
-    {"mm66Issf", BuiltinType::kUndefined},
-    {"mat3x1f", BuiltinType::kUndefined},
-    {"Xt3x3", BuiltinType::kUndefined},
-    {"LatIx3h", BuiltinType::kUndefined},
-    {"at3fh", BuiltinType::kUndefined},
+    {"mat3x55f", BuiltinType::kUndefined},
+    {"maN32", BuiltinType::kUndefined},
+    {"ma3Ox33", BuiltinType::kUndefined},
+    {"m3t3x2h", BuiltinType::kUndefined},
+    {"mt3I3", BuiltinType::kUndefined},
+    {"mnnt3xr", BuiltinType::kUndefined},
+    {"mXX", BuiltinType::kUndefined},
+    {"LatIx3f", BuiltinType::kUndefined},
+    {"at3ff", BuiltinType::kUndefined},
     {"mYtURD3", BuiltinType::kUndefined},
-    {"mah3x4", BuiltinType::kUndefined},
-    {"muqII4", BuiltinType::kUndefined},
-    {"mat3xH", BuiltinType::kUndefined},
-    {"at3QQvv", BuiltinType::kUndefined},
-    {"at66ef", BuiltinType::kUndefined},
-    {"ma7O4f", BuiltinType::kUndefined},
+    {"mah3x3h", BuiltinType::kUndefined},
+    {"uuIqt3x", BuiltinType::kUndefined},
+    {"maH3x3h", BuiltinType::kUndefined},
+    {"at3Qvv", BuiltinType::kUndefined},
+    {"66ate", BuiltinType::kUndefined},
+    {"mat7x", BuiltinType::kUndefined},
     {"m55t3x0DD", BuiltinType::kUndefined},
     {"maH3x4II", BuiltinType::kUndefined},
     {"at3x4", BuiltinType::kUndefined},
-    {"ma994x2", BuiltinType::kUndefined},
-    {"mWWt4Gt2", BuiltinType::kUndefined},
-    {"ay42", BuiltinType::kUndefined},
-    {"mt4x2f", BuiltinType::kUndefined},
-    {"IIaBB4x2f", BuiltinType::kUndefined},
-    {"TTat4x833", BuiltinType::kUndefined},
-    {"ddUUnntYYx2h", BuiltinType::kUndefined},
+    {"rat3x499", BuiltinType::kUndefined},
+    {"mGtt31W4h", BuiltinType::kUndefined},
+    {"yatx4", BuiltinType::kUndefined},
+    {"mt4x2", BuiltinType::kUndefined},
+    {"maBBI4x2", BuiltinType::kUndefined},
+    {"mat8TTx2", BuiltinType::kUndefined},
+    {"ddUUnntYYx2f", BuiltinType::kUndefined},
     {"m5CCxxdZ", BuiltinType::kUndefined},
-    {"matkkq2h", BuiltinType::kUndefined},
-    {"5iitp00", BuiltinType::kUndefined},
-    {"mnntIIx3", BuiltinType::kUndefined},
-    {"ccaKx", BuiltinType::kUndefined},
-    {"m43KK", BuiltinType::kUndefined},
-    {"mat66x3f", BuiltinType::kUndefined},
-    {"Et4PP3K", BuiltinType::kUndefined},
-    {"xxatx3h", BuiltinType::kUndefined},
-    {"qat4x3h", BuiltinType::kUndefined},
-    {"MMayySrxh", BuiltinType::kUndefined},
-    {"uat4", BuiltinType::kUndefined},
-    {"tx4", BuiltinType::kUndefined},
-    {"ma54FF4", BuiltinType::kUndefined},
-    {"rra444z4f", BuiltinType::kUndefined},
-    {"matWW", BuiltinType::kUndefined},
-    {"CatZJXx4f", BuiltinType::kUndefined},
-    {"maPPx4h", BuiltinType::kUndefined},
-    {"mat4c4h", BuiltinType::kUndefined},
-    {"matPPll6h", BuiltinType::kUndefined},
-    {"9tyy", BuiltinType::kUndefined},
-    {"ptKK", BuiltinType::kUndefined},
-    {"x_", BuiltinType::kUndefined},
-    {"ayKer", BuiltinType::kUndefined},
-    {"szmpVek", BuiltinType::kUndefined},
-    {"sampqeK", BuiltinType::kUndefined},
-    {"sampler_comparisn", BuiltinType::kUndefined},
-    {"sapler_comparisVVn", BuiltinType::kUndefined},
-    {"samplerIcompaAUison", BuiltinType::kUndefined},
-    {"jexurbRd", BuiltinType::kUndefined},
-    {"exure_YYd", BuiltinType::kUndefined},
-    {"exture_1d", BuiltinType::kUndefined},
+    {"matkkq2f", BuiltinType::kUndefined},
+    {"005itpxh", BuiltinType::kUndefined},
+    {"maIInnx2h", BuiltinType::kUndefined},
+    {"Ka4Wcc", BuiltinType::kUndefined},
+    {"mtKK", BuiltinType::kUndefined},
+    {"ma664x3", BuiltinType::kUndefined},
+    {"mKKtPx", BuiltinType::kUndefined},
+    {"xxatx3f", BuiltinType::kUndefined},
+    {"qat4x3f", BuiltinType::kUndefined},
+    {"MMayySrxf", BuiltinType::kUndefined},
+    {"mat3h", BuiltinType::kUndefined},
+    {"tx3h", BuiltinType::kUndefined},
+    {"ma5F4x3h", BuiltinType::kUndefined},
+    {"rraz44x4", BuiltinType::kUndefined},
+    {"aWWx", BuiltinType::kUndefined},
+    {"ZZJJtCxX", BuiltinType::kUndefined},
+    {"maPPx4f", BuiltinType::kUndefined},
+    {"mat4c4f", BuiltinType::kUndefined},
+    {"matPPll6f", BuiltinType::kUndefined},
+    {"mat994yy", BuiltinType::kUndefined},
+    {"mat4JKKh", BuiltinType::kUndefined},
+    {"mat4_h", BuiltinType::kUndefined},
+    {"K", BuiltinType::kUndefined},
+    {"kVz", BuiltinType::kUndefined},
+    {"KtS", BuiltinType::kUndefined},
+    {"ampler", BuiltinType::kUndefined},
+    {"aVVpler", BuiltinType::kUndefined},
+    {"AAamIlUr", BuiltinType::kUndefined},
+    {"jamper_compaRson", BuiltinType::kUndefined},
+    {"amplr44compYYriso", BuiltinType::kUndefined},
+    {"samper_comparison", BuiltinType::kUndefined},
     {"texxxur_1d", BuiltinType::kUndefined},
-    {"tJxucce_2d", BuiltinType::kUndefined},
+    {"tJxucce_1d", BuiltinType::kUndefined},
     {"texure_JJd", BuiltinType::kUndefined},
-    {"lDexture_fCC_arraU", BuiltinType::kUndefined},
-    {"tegture_2d_array", BuiltinType::kUndefined},
-    {"teCCure2d_arra", BuiltinType::kUndefined},
-    {"textue_3d", BuiltinType::kUndefined},
-    {"tIx__ure_3d", BuiltinType::kUndefined},
-    {"texurettPP", BuiltinType::kUndefined},
-    {"tddx3ure_cube", BuiltinType::kUndefined},
-    {"teKyyur_cube", BuiltinType::kUndefined},
-    {"teturecub", BuiltinType::kUndefined},
-    {"textinne_c03e_array", BuiltinType::kUndefined},
-    {"nextCCruuvcubK_array", BuiltinType::kUndefined},
-    {"tXxturellcbe_array", BuiltinType::kUndefined},
-    {"tppxture_depth_2d", BuiltinType::kUndefined},
-    {"txture_deptww_2d", BuiltinType::kUndefined},
-    {"gexturedemmthuu2", BuiltinType::kUndefined},
-    {"texmmre_depthaa2daray", BuiltinType::kUndefined},
-    {"texture_RRepth_Td_ccZray", BuiltinType::kUndefined},
-    {"text88re_depthTOd_array", BuiltinType::kUndefined},
-    {"texture_depth_cm00e", BuiltinType::kUndefined},
-    {"texture_Bmepth_cube", BuiltinType::kUndefined},
-    {"Mextre_ppeph_cube", BuiltinType::kUndefined},
-    {"texturOO_depth_cub_array", BuiltinType::kUndefined},
-    {"GeGGture_depthcube_array", BuiltinType::kUndefined},
-    {"texture11Hdepth_cube_array", BuiltinType::kUndefined},
-    {"textu6e_FFepth_multiameeled_2d", BuiltinType::kUndefined},
-    {"texture_epth_mltisampled_2d", BuiltinType::kUndefined},
-    {"texture_depth_mullKsaiipled_2d", BuiltinType::kUndefined},
-    {"texture_extenal", BuiltinType::kUndefined},
-    {"IIext99reexvvernal", BuiltinType::kUndefined},
-    {"texture_externl", BuiltinType::kUndefined},
-    {"texture_mhltisampled_2d", BuiltinType::kUndefined},
-    {"texturemPllltisampzzed_2d", BuiltinType::kUndefined},
-    {"exture_mltisamed_2d", BuiltinType::kUndefined},
-    {"texture_qqtoragff_1", BuiltinType::kUndefined},
-    {"textre_JJddorage_1W", BuiltinType::kUndefined},
-    {"XXrxture_storae1zz", BuiltinType::kUndefined},
-    {"texturestorag2_2d", BuiltinType::kUndefined},
-    {"yyNxture_storage_2d", BuiltinType::kUndefined},
-    {"etue_storage_2OO", BuiltinType::kUndefined},
-    {"reutuPe_storZgeE2d_array", BuiltinType::kUndefined},
-    {"texlure_storddeee_d_22rray", BuiltinType::kUndefined},
-    {"texture_mtorage_2V_a9ra", BuiltinType::kUndefined},
-    {"teII1re_storage_3d", BuiltinType::kUndefined},
-    {"texture_storagb_3d", BuiltinType::kUndefined},
-    {"texizrestorge73d", BuiltinType::kUndefined},
-    {"u3oi", BuiltinType::kUndefined},
-    {"3", BuiltinType::kUndefined},
-    {"S2", BuiltinType::kUndefined},
-    {"e22", BuiltinType::kUndefined},
-    {"1eC2", BuiltinType::kUndefined},
-    {"vf8c2", BuiltinType::kUndefined},
-    {"c2f", BuiltinType::kUndefined},
-    {"JJecSSf", BuiltinType::kUndefined},
-    {"92f", BuiltinType::kUndefined},
+    {"lextuUe_2fDC", BuiltinType::kUndefined},
+    {"textgre_2d", BuiltinType::kUndefined},
+    {"CCxtue_2", BuiltinType::kUndefined},
+    {"txture_2d_array", BuiltinType::kUndefined},
+    {"textu__e_2d_arraI", BuiltinType::kUndefined},
+    {"texurPtt_2dNrray", BuiltinType::kUndefined},
+    {"tddx3ure_3d", BuiltinType::kUndefined},
+    {"teyytur_Kd", BuiltinType::kUndefined},
+    {"tetuuud", BuiltinType::kUndefined},
+    {"tex0unne_cu3e", BuiltinType::kUndefined},
+    {"uuexnure_cuvCK", BuiltinType::kUndefined},
+    {"tXllure_cube", BuiltinType::kUndefined},
+    {"texture_cppbo_array", BuiltinType::kUndefined},
+    {"teture_wwube_array", BuiltinType::kUndefined},
+    {"texturgm_cuube_aay", BuiltinType::kUndefined},
+    {"texmmre_deaath_", BuiltinType::kUndefined},
+    {"textRRcceTdeptZ_2d", BuiltinType::kUndefined},
+    {"te88tureOdTpth_2d", BuiltinType::kUndefined},
+    {"textume_00epth_2d_array", BuiltinType::kUndefined},
+    {"texturm_depth_BBd_array", BuiltinType::kUndefined},
+    {"texppur_depth_M_array", BuiltinType::kUndefined},
+    {"textre_deptOO_cube", BuiltinType::kUndefined},
+    {"texture_deptG_GGbe", BuiltinType::kUndefined},
+    {"tHHx11ure_depth_cube", BuiltinType::kUndefined},
+    {"texeere_depth_c6bFF_array", BuiltinType::kUndefined},
+    {"texure_depth_cub_array", BuiltinType::kUndefined},
+    {"tKxtiire_depth_cule_array", BuiltinType::kUndefined},
+    {"texture_depth_mulisampled_2d", BuiltinType::kUndefined},
+    {"texture99vdpth_multisIImpled_2d", BuiltinType::kUndefined},
+    {"texture_depth_multisampled_2", BuiltinType::kUndefined},
+    {"texture_hxternal", BuiltinType::kUndefined},
+    {"textullPP_extzzrna", BuiltinType::kUndefined},
+    {"texure_teral", BuiltinType::kUndefined},
+    {"texture_mufftiqqamled_2d", BuiltinType::kUndefined},
+    {"tddtuJJe_multisampled_2d", BuiltinType::kUndefined},
+    {"texuXXe_multisampldzz2d", BuiltinType::kUndefined},
+    {"texturestorag2_1d", BuiltinType::kUndefined},
+    {"yyNxture_storage_1d", BuiltinType::kUndefined},
+    {"etue_storage_1OO", BuiltinType::kUndefined},
+    {"reuEure_storZge_2P", BuiltinType::kUndefined},
+    {"teexture_sl2ddrage_d", BuiltinType::kUndefined},
+    {"tVVxture_9tagm_2d", BuiltinType::kUndefined},
+    {"tIIture_storage_2d_arr1y", BuiltinType::kUndefined},
+    {"texture_storagb_2d_array", BuiltinType::kUndefined},
+    {"texture_stzrage_2dai7a", BuiltinType::kUndefined},
+    {"texoure_storagii_3d", BuiltinType::kUndefined},
+    {"exture_ntor5ge3d", BuiltinType::kUndefined},
+    {"exture_storiSe_3d", BuiltinType::kUndefined},
+    {"22", BuiltinType::kUndefined},
+    {"uGC", BuiltinType::kUndefined},
+    {"f832", BuiltinType::kUndefined},
+    {"e2", BuiltinType::kUndefined},
+    {"SJJec2", BuiltinType::kUndefined},
+    {"9c", BuiltinType::kUndefined},
     {"vbbJJ2TT", BuiltinType::kUndefined},
-    {"e66h", BuiltinType::kUndefined},
-    {"u662h", BuiltinType::kUndefined},
-    {"vW2i", BuiltinType::kUndefined},
-    {"v2i", BuiltinType::kUndefined},
-    {"veci", BuiltinType::kUndefined},
-    {"rec2u", BuiltinType::kUndefined},
+    {"e66f", BuiltinType::kUndefined},
+    {"u662f", BuiltinType::kUndefined},
+    {"vW2h", BuiltinType::kUndefined},
+    {"v2h", BuiltinType::kUndefined},
+    {"vech", BuiltinType::kUndefined},
+    {"rec2i", BuiltinType::kUndefined},
     {"2ec2B", BuiltinType::kUndefined},
-    {"vcBBu", BuiltinType::kUndefined},
-    {"veRR", BuiltinType::kUndefined},
-    {"VLL0", BuiltinType::kUndefined},
-    {"KOe3", BuiltinType::kUndefined},
-    {"vgwcf", BuiltinType::kUndefined},
-    {"vLphf", BuiltinType::kUndefined},
-    {"eiiEf", BuiltinType::kUndefined},
-    {"ec3h", BuiltinType::kUndefined},
+    {"vcBBi", BuiltinType::kUndefined},
+    {"vRc2u", BuiltinType::kUndefined},
+    {"v2LL0", BuiltinType::kUndefined},
+    {"vKOOu", BuiltinType::kUndefined},
+    {"gwc3", BuiltinType::kUndefined},
+    {"hpLc", BuiltinType::kUndefined},
+    {"Eiic", BuiltinType::kUndefined},
+    {"ec3f", BuiltinType::kUndefined},
     {"UU883", BuiltinType::kUndefined},
-    {"rrecvvh", BuiltinType::kUndefined},
+    {"rrecvvf", BuiltinType::kUndefined},
     {"ecmm", BuiltinType::kUndefined},
     {"vec4j", BuiltinType::kUndefined},
     {"vec3X", BuiltinType::kUndefined},
     {"vec38", BuiltinType::kUndefined},
     {"vecvEE", BuiltinType::kUndefined},
     {"z99ci", BuiltinType::kUndefined},
-    {"JJGeQQ4", BuiltinType::kUndefined},
-    {"ssec4", BuiltinType::kUndefined},
-    {"PecK", BuiltinType::kUndefined},
-    {"tpc4f", BuiltinType::kUndefined},
-    {"vec", BuiltinType::kUndefined},
-    {"MMec4f", BuiltinType::kUndefined},
+    {"GGeJJA3u", BuiltinType::kUndefined},
+    {"vess3u", BuiltinType::kUndefined},
+    {"vPcKu", BuiltinType::kUndefined},
+    {"vtc4", BuiltinType::kUndefined},
+    {"e4", BuiltinType::kUndefined},
+    {"veMM4", BuiltinType::kUndefined},
     {"vJJc40", BuiltinType::kUndefined},
     {"8c", BuiltinType::kUndefined},
     {"vecggKh", BuiltinType::kUndefined},
-    {"vecfi", BuiltinType::kUndefined},
+    {"vecfh", BuiltinType::kUndefined},
     {"vec47Q", BuiltinType::kUndefined},
-    {"veY4i", BuiltinType::kUndefined},
-    {"keSu", BuiltinType::kUndefined},
+    {"veY4h", BuiltinType::kUndefined},
+    {"keSi", BuiltinType::kUndefined},
     {"n422", BuiltinType::kUndefined},
-    {"vFFu", BuiltinType::kUndefined},
+    {"vFFi", BuiltinType::kUndefined},
+    {"GGIec4PP", BuiltinType::kUndefined},
+    {"aeEE4", BuiltinType::kUndefined},
+    {"ddBee4u", BuiltinType::kUndefined},
 };
 
 using BuiltinTypeParseTest = testing::TestWithParam<Case>;
diff --git a/src/tint/lang/core/core.def b/src/tint/lang/core/core.def
index d60e5b2..175f61c 100644
--- a/src/tint/lang/core/core.def
+++ b/src/tint/lang/core/core.def
@@ -161,6 +161,8 @@
   texture_storage_3d
   // https://www.w3.org/TR/WGSL/#external-texture-type
   texture_external
+  // chromium_internal_input_attachments
+  input_attachment
 
   // Internal types.
   __packed_vec3  // note: not core type, but used by legacy MSL writer
diff --git a/src/tint/lang/wgsl/ast/builder.h b/src/tint/lang/wgsl/ast/builder.h
index 705e7db..b643fc4 100644
--- a/src/tint/lang/wgsl/ast/builder.h
+++ b/src/tint/lang/wgsl/ast/builder.h
@@ -46,6 +46,7 @@
 #include "src/tint/lang/core/type/f16.h"
 #include "src/tint/lang/core/type/f32.h"
 #include "src/tint/lang/core/type/i32.h"
+#include "src/tint/lang/core/type/input_attachment.h"
 #include "src/tint/lang/core/type/matrix.h"
 #include "src/tint/lang/core/type/multisampled_texture.h"
 #include "src/tint/lang/core/type/pointer.h"
@@ -1298,6 +1299,12 @@
         /// @returns the external texture
         ast::Type external_texture() const { return (*this)("texture_external"); }
 
+        /// @param subtype the texture subtype.
+        /// @returns the input attachment
+        ast::Type input_attachment(ast::Type subtype) const {
+            return (*this)("input_attachment", subtype);
+        }
+
         /// @param source the Source of the node
         /// @returns the external texture
         ast::Type external_texture(const Source& source) const {
diff --git a/src/tint/lang/wgsl/ast/transform/renamer_test.cc b/src/tint/lang/wgsl/ast/transform/renamer_test.cc
index b3aa2ac..6912b2e 100644
--- a/src/tint/lang/wgsl/ast/transform/renamer_test.cc
+++ b/src/tint/lang/wgsl/ast/transform/renamer_test.cc
@@ -1866,7 +1866,8 @@
     std::vector<std::string_view> out;
     for (auto type : core::kBuiltinTypeStrings) {
         if (type != "ptr" && type != "atomic" && !tint::HasPrefix(type, "sampler") &&
-            !tint::HasPrefix(type, "texture") && !tint::HasPrefix(type, "__")) {
+            !tint::HasPrefix(type, "texture") && !tint::HasPrefix(type, "__") &&
+            !tint::HasPrefix(type, "input_attachment")) {
             out.push_back(type);
         }
     }
diff --git a/src/tint/lang/wgsl/resolver/resolver.cc b/src/tint/lang/wgsl/resolver/resolver.cc
index 34d3af3..0a17841 100644
--- a/src/tint/lang/wgsl/resolver/resolver.cc
+++ b/src/tint/lang/wgsl/resolver/resolver.cc
@@ -46,6 +46,7 @@
 #include "src/tint/lang/core/type/depth_multisampled_texture.h"
 #include "src/tint/lang/core/type/depth_texture.h"
 #include "src/tint/lang/core/type/external_texture.h"
+#include "src/tint/lang/core/type/input_attachment.h"
 #include "src/tint/lang/core/type/memory_view.h"
 #include "src/tint/lang/core/type/multisampled_texture.h"
 #include "src/tint/lang/core/type/pointer.h"
@@ -2654,6 +2655,8 @@
             return StorageTexture(ident, core::type::TextureDimension::k2dArray);
         case core::BuiltinType::kTextureStorage3D:
             return StorageTexture(ident, core::type::TextureDimension::k3d);
+        case core::BuiltinType::kInputAttachment:
+            return InputAttachment(ident);
         case core::BuiltinType::kPackedVec3:
             return PackedVec3T(ident);
         case core::BuiltinType::kAtomicCompareExchangeResultI32:
@@ -2968,6 +2971,21 @@
     return tex;
 }
 
+core::type::InputAttachment* Resolver::InputAttachment(const ast::Identifier* ident) {
+    auto* tmpl_ident = TemplatedIdentifier(ident, 1);
+    if (TINT_UNLIKELY(!tmpl_ident)) {
+        return nullptr;
+    }
+
+    auto* ty_expr = sem_.GetType(tmpl_ident->arguments[0]);
+    if (TINT_UNLIKELY(!ty_expr)) {
+        return nullptr;
+    }
+
+    auto* out = b.create<core::type::InputAttachment>(ty_expr);
+    return validator_.InputAttachment(out, ident->source) ? out : nullptr;
+}
+
 core::type::Vector* Resolver::PackedVec3T(const ast::Identifier* ident) {
     auto* tmpl_ident = TemplatedIdentifier(ident, 1);
     if (TINT_UNLIKELY(!tmpl_ident)) {
diff --git a/src/tint/lang/wgsl/resolver/resolver.h b/src/tint/lang/wgsl/resolver/resolver.h
index 715d62a..df18f91 100644
--- a/src/tint/lang/wgsl/resolver/resolver.h
+++ b/src/tint/lang/wgsl/resolver/resolver.h
@@ -223,6 +223,9 @@
     core::type::StorageTexture* StorageTexture(const ast::Identifier* ident,
                                                core::type::TextureDimension dim);
 
+    /// @returns an input attachment resolved from the templated identifier @p ident
+    core::type::InputAttachment* InputAttachment(const ast::Identifier* ident);
+
     /// @returns a packed vec3 resolved from the templated identifier @p ident.
     core::type::Vector* PackedVec3T(const ast::Identifier* ident);
 
diff --git a/src/tint/lang/wgsl/resolver/validator.cc b/src/tint/lang/wgsl/resolver/validator.cc
index 155aaf1..f482497 100644
--- a/src/tint/lang/wgsl/resolver/validator.cc
+++ b/src/tint/lang/wgsl/resolver/validator.cc
@@ -441,6 +441,15 @@
     return true;
 }
 
+bool Validator::InputAttachment(const core::type::InputAttachment* t, const Source& source) const {
+    if (!t->type()->UnwrapRef()->IsAnyOf<core::type::F32, core::type::I32, core::type::U32>()) {
+        AddError(source) << "input_attachment<type>: type must be f32, i32 or u32";
+        return false;
+    }
+
+    return true;
+}
+
 bool Validator::Materialize(const core::type::Type* to,
                             const core::type::Type* from,
                             const Source& source) const {
diff --git a/src/tint/lang/wgsl/resolver/validator.h b/src/tint/lang/wgsl/resolver/validator.h
index 0fa3bd9..6cdbfaf 100644
--- a/src/tint/lang/wgsl/resolver/validator.h
+++ b/src/tint/lang/wgsl/resolver/validator.h
@@ -428,6 +428,12 @@
     /// @returns true on success, false otherwise
     bool MultisampledTexture(const core::type::MultisampledTexture* t, const Source& source) const;
 
+    /// Validates a input attachment
+    /// @param t the input attachment to validate
+    /// @param source the source of the input attachment
+    /// @returns true on success, false otherwise
+    bool InputAttachment(const core::type::InputAttachment* t, const Source& source) const;
+
     /// Validates a structure
     /// @param str the structure to validate
     /// @param stage the current pipeline stage