diff --git a/Cargo.lock b/Cargo.lock
index 0a1ee1d034..dfb735bcba 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -79,6 +79,18 @@ dependencies = [
  "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "cocoa"
+version = "0.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-graphics 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.6.1"
@@ -104,6 +116,27 @@ dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "core-graphics"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-foundation 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "derivative"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "itertools 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.10.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "dlib"
 version = "0.4.1"
@@ -117,6 +150,11 @@ name = "downcast-rs"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "either"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "failure"
 version = "0.1.2"
@@ -172,6 +210,56 @@ dependencies = [
  "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "gcc"
+version = "0.3.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "gfx-backend-dx12"
+version = "0.1.0"
+source = "git+https://github.com/gfx-rs/gfx#122da131665d8a757bdda7323442b9beb9ac2088"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "derivative 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx)",
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "spirv_cross 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winit 0.17.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wio 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "gfx-backend-empty"
+version = "0.1.0"
+source = "git+https://github.com/gfx-rs/gfx#122da131665d8a757bdda7323442b9beb9ac2088"
+dependencies = [
+ "gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx)",
+]
+
+[[package]]
+name = "gfx-backend-metal"
+version = "0.1.0"
+source = "git+https://github.com/gfx-rs/gfx#122da131665d8a757bdda7323442b9beb9ac2088"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cocoa 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-graphics 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx)",
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "metal 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "spirv_cross 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "storage-map 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winit 0.17.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "gfx-backend-vulkan"
 version = "0.1.0"
@@ -225,11 +313,22 @@ dependencies = [
 name = "gpu-native"
 version = "0.1.0"
 dependencies = [
+ "gfx-backend-dx12 0.1.0 (git+https://github.com/gfx-rs/gfx)",
+ "gfx-backend-empty 0.1.0 (git+https://github.com/gfx-rs/gfx)",
+ "gfx-backend-metal 0.1.0 (git+https://github.com/gfx-rs/gfx)",
  "gfx-backend-vulkan 0.1.0 (git+https://github.com/gfx-rs/gfx)",
  "gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx)",
  "gfx-memory 0.1.0 (git+https://github.com/gfx-rs/gfx-memory)",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.5.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "lazy_static"
 version = "0.2.11"
@@ -291,6 +390,23 @@ dependencies = [
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "metal"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cocoa 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "core-graphics 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc-foundation 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc_id 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "nix"
 version = "0.11.0"
@@ -309,6 +425,33 @@ version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "malloc_buf 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc_exception 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "objc-foundation"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "block 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "objc_id 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "objc_exception"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "objc_id"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -358,6 +501,11 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "quote"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "quote"
 version = "0.6.8"
@@ -452,11 +600,44 @@ dependencies = [
  "wayland-protocols 0.20.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "spirv_cross"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "spirv_cross"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "stable_deref_trait"
 version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "storage-map"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "syn"
+version = "0.10.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "syn"
 version = "0.14.9"
@@ -478,6 +659,11 @@ dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "unicode-xid"
+version = "0.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-xid"
 version = "0.1.0"
@@ -591,6 +777,14 @@ dependencies = [
  "x11-dl 2.18.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "wio"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "x11"
 version = "2.18.1"
@@ -639,11 +833,15 @@ dependencies = [
 "checksum cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0c4e7bb64a8ebb0d856483e1e682ea3422f883c5f5615a90d51a2c82fe87fdd3"
 "checksum cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ddfc5b9aa5d4507acaf872de71051dfd0e309860e88966e1051e462a077aac4f"
 "checksum cocoa 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f5cd1afb83b2de9c41e5dfedb2bcccb779d433b958404876009ae4b01746ff23"
+"checksum cocoa 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "53a840785348e998a1433d1f9d0b350fd83e91711fae8507c76ce510afc77e72"
 "checksum core-foundation 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cc3532ec724375c7cb7ff0a097b714fde180bb1f6ed2ab27cfcd99ffca873cd2"
 "checksum core-foundation-sys 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a3fb15cdbdd9cf8b82d97d0296bb5cd3631bba58d6e31650a002a8e7fb5721f9"
 "checksum core-graphics 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "92801c908ea6301ae619ed842a72e01098085fc321b9c2f3f833dad555bba055"
+"checksum core-graphics 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de51fc45f0de4bc07e7ecdb172f0559e0f19ca016a0059577a149b11a2f05324"
+"checksum derivative 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "67b3d6d0e84e53a5bdc263cc59340541877bb541706a191d762bfac6a481bdde"
 "checksum dlib 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)" = "77e51249a9d823a4cb79e3eca6dcd756153e8ed0157b6c04775d04bf1b13b76a"
 "checksum downcast-rs 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "18df8ce4470c189d18aa926022da57544f31e154631eb4cfe796aea97051fe6c"
+"checksum either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3be565ca5c557d7f59e7cfcf1844f9e3033650c929c6566f511e8005f205c1d0"
 "checksum failure 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7efb22686e4a466b1ec1a15c2898f91fa9cb340452496dca654032de20ff95b9"
 "checksum failure_derive 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "946d0e98a50d9831f5d589038d2ca7f8f455b1c21028c0db0e84116a12696426"
 "checksum foreign-types 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f6f339eb8adc052cd2ca78910fda869aefa38d22d5cb648e6485e4d3fc06f3b1"
@@ -651,10 +849,15 @@ dependencies = [
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum fxhash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
+"checksum gcc 0.3.54 (registry+https://github.com/rust-lang/crates.io-index)" = "5e33ec290da0d127825013597dbdfc28bee4964690c7ce1166cbc2a7bd08b1bb"
+"checksum gfx-backend-dx12 0.1.0 (git+https://github.com/gfx-rs/gfx)" = "<none>"
+"checksum gfx-backend-empty 0.1.0 (git+https://github.com/gfx-rs/gfx)" = "<none>"
+"checksum gfx-backend-metal 0.1.0 (git+https://github.com/gfx-rs/gfx)" = "<none>"
 "checksum gfx-backend-vulkan 0.1.0 (git+https://github.com/gfx-rs/gfx)" = "<none>"
 "checksum gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx)" = "<none>"
 "checksum gfx-hal 0.1.0 (git+https://github.com/gfx-rs/gfx?rev=6cb2a800b)" = "<none>"
 "checksum gfx-memory 0.1.0 (git+https://github.com/gfx-rs/gfx-memory)" = "<none>"
+"checksum itertools 0.5.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4833d6978da405305126af4ac88569b5d71ff758581ce5a987dbfa3755f694fc"
 "checksum lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "76f033c7ad61445c5b347c7382dd1237847eb1bce590fe50365dcb33d546be73"
 "checksum lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ca488b89a5657b0a2ecd45b95609b3e848cf1755da332a0da46e2b2b1cb371a7"
 "checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
@@ -663,14 +866,19 @@ dependencies = [
 "checksum log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4fcce5fa49cc693c312001daf1d13411c4a5283796bac1084299ea3e567113f"
 "checksum malloc_buf 0.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "62bb907fe88d54d8d9ce32a3cceab4218ed2f6b7d35617cafe9adf84e43919cb"
 "checksum memmap 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2ffa2c986de11a9df78620c01eeaaf27d94d3ff02bf81bfcca953102dd0c6ff"
+"checksum metal 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8411e1b14691a658f4b285f980c98d1af1922dcf037ea4454288dc456ca0d1ed"
 "checksum nix 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d37e713a259ff641624b6cb20e3b12b2952313ba36b6823c0f16e6cfd9e5de17"
 "checksum objc 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "9833ab0efe5361b1e2122a0544a5d3359576911a42cb098c2e59be8650807367"
+"checksum objc-foundation 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1add1b659e36c9607c7aab864a76c7a4c2760cd0cd2e120f3fb8b952c7e22bf9"
+"checksum objc_exception 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "098cd29a2fa3c230d3463ae069cecccc3fdfd64c0d2496ab5b96f82dab6a00dc"
+"checksum objc_id 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c92d4ddb4bd7b50d730c215ff871754d0da6b2178849f8a2a2ab69712d0c073b"
 "checksum owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "cdf84f41639e037b484f93433aa3897863b561ed65c6e59c7073d7c561710f37"
 "checksum parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "f0802bff09003b291ba756dc7e79313e51cc31667e94afbe847def490424cde5"
 "checksum parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ad7f7e6ebdc79edff6fdcb87a55b620174f7a989e3eb31b65231f4af57f00b8c"
 "checksum percent-encoding 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "31010dd2e1ac33d5b46a5b413495239882813e0369f8ed8a5e266f173602f831"
 "checksum pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)" = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
 "checksum proc-macro2 0.4.19 (registry+https://github.com/rust-lang/crates.io-index)" = "ffe022fb8c8bd254524b0b3305906c1921fa37a84a644e29079a9e62200c3901"
+"checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)" = "dd636425967c33af890042c483632d33fa7a18f19ad1d7ea72e8998c6ef8dea5"
 "checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
 "checksum rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "edecf0f94da5551fc9b492093e30b041a891657db7940ee221f9d2f66e82eef2"
@@ -683,9 +891,14 @@ dependencies = [
 "checksum shared_library 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "5a9e7e0f2bfae24d8a5b5a66c5b257a83c7412304311512a0c054cd5e619da11"
 "checksum smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "153ffa32fd170e9944f7e0838edf824a754ec4c1fc64746fcc9fe1f8fa602e5d"
 "checksum smithay-client-toolkit 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f1609083d6bca3991a3c648d80ae16e1764d70881c3321bee1c915149073d605"
+"checksum spirv_cross 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "1c2c0be48967fec392de4749ac34a2da758aaa359ca648abaa47b90b36845013"
+"checksum spirv_cross 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e1b0b4e01f61e50a6e223fde32934883df4086004174a1fc522fc97bda2ce938"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
+"checksum storage-map 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "cb94f167ccba0941876c8e722e888be8b4c05511ffdacc8cfcd4c647adfd424d"
+"checksum syn 0.10.8 (registry+https://github.com/rust-lang/crates.io-index)" = "58fd09df59565db3399efbba34ba8a2fec1307511ebd245d0061ff9d42691673"
 "checksum syn 0.14.9 (registry+https://github.com/rust-lang/crates.io-index)" = "261ae9ecaa397c42b960649561949d69311f08eeaea86a65696e6e46517cf741"
 "checksum synstructure 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "85bb9b7550d063ea184027c9b8c20ac167cd36d3e06b3a40bceb9d746dc1a7b7"
+"checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
 "checksum version_check 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7716c242968ee87e5542f8021178248f267f295a5c4803beae8b8b7fd9bc6051"
@@ -699,6 +912,7 @@ dependencies = [
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 "checksum winit 0.17.2 (registry+https://github.com/rust-lang/crates.io-index)" = "ba44cf306b981badc781894ab5d6fda54764a0512cbbf8db4685d329014143fa"
+"checksum wio 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f8a31e8a268d6941ffb7f8d7989fc93e4692bd3e75a27d400a72b4be1dadb213"
 "checksum x11 2.18.1 (registry+https://github.com/rust-lang/crates.io-index)" = "39697e3123f715483d311b5826e254b6f3cfebdd83cf7ef3358f579c3d68e235"
 "checksum x11-dl 2.18.3 (registry+https://github.com/rust-lang/crates.io-index)" = "940586acb859ea05c53971ac231685799a7ec1dee66ac0bccc0e6ad96e06b4e3"
 "checksum xcb 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5e917a3f24142e9ff8be2414e36c649d47d6cc2ba81f16201cdef96e533e02de"
diff --git a/Cargo.toml b/Cargo.toml
index c7dbc27012..f0a340a7e0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,9 +4,11 @@ version = "0.1.0"
 authors = ["Dzmitry Malyshau <kvark@mozilla.com>"]
 
 [features]
+default = []
 
 [dependencies]
 gfx-hal = { git = "https://github.com/gfx-rs/gfx" }
+gfx-backend-empty = { git = "https://github.com/gfx-rs/gfx" }
 gfx-backend-vulkan = { git = "https://github.com/gfx-rs/gfx", optional = true }
 gfx-backend-dx12 = { git = "https://github.com/gfx-rs/gfx", optional = true }
 gfx-backend-metal = { git = "https://github.com/gfx-rs/gfx", optional = true }
diff --git a/examples/init.rs b/examples/init.rs
index b89004ed9d..1e03e88ed7 100644
--- a/examples/init.rs
+++ b/examples/init.rs
@@ -7,7 +7,7 @@ fn main() {
     });
     let device = gn::adapter_create_device(adapter, gn::DeviceDescriptor {
         extensions: gn::Extensions {
-            anisotropicFiltering: false,
+            anisotropic_filtering: false,
         },
     });
 }
diff --git a/src/lib.rs b/src/lib.rs
index 48e943f168..e55095cd68 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,10 +1,13 @@
-extern crate gfx_hal as hal;
 #[cfg(feature = "gfx-backend-vulkan")]
 extern crate gfx_backend_vulkan as back;
 #[cfg(feature = "gfx-backend-dx12")]
 extern crate gfx_backend_dx12 as back;
 #[cfg(feature = "gfx-backend-metal")]
 extern crate gfx_backend_metal as back;
+#[cfg(not(any(feature = "gfx-backend-vulkan", feature = "gfx-backend-dx12", feature = "gfx-backend-metal")))]
+extern crate gfx_backend_empty as back;
+
+extern crate gfx_hal as hal;
 extern crate gfx_memory as memory;
 
 mod command;