VIP performance improvements

Cargo.lock

@@ -42,9 +42,9 @@ dependencies = [
 
 [[package]]
 name = "allocator-api2"
-version = "0.2.18"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c6cb57a04249c6480766f7f7cef5467412af1490f8d1e243141daddada3264f"
+checksum = "45862d1c77f2228b9e10bc609d5bc203d86ebc9b87ad8d5d5167a6c9abf739d9"
 
 [[package]]
 name = "alsa"
@@ -106,9 +106,9 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.17"
+version = "0.6.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23a1e53f0f5d86382dafe1cf314783b2044280f406e7e1506368220ad11b1338"
+checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
 dependencies = [
  "anstyle",
  "anstyle-parse",
@@ -155,9 +155,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.92"
+version = "1.0.93"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74f37166d7d48a0284b99dd824694c26119c700b53bf0d1540cdb147dbdaaf13"
+checksum = "4c95c10ba0b00a02636238b814946408b1322d5ac4760326e6fb8ec956d85775"
 
 [[package]]
 name = "arrayref"
@@ -219,23 +219,23 @@ dependencies = [
  "regex",
  "rustc-hash",
  "shlex",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
 name = "bit-set"
-version = "0.6.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0481a0e032742109b1133a095184ee93d88f3dc9e0d28a5d033dc77a073f44f"
+checksum = "08807e080ed7f9d5433fa9b275196cfc35414f66a0c79d864dc51a0d825231a3"
 dependencies = [
  "bit-vec",
 ]
 
 [[package]]
 name = "bit-vec"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d2c54ff287cfc0a34f38a6b832ea1bd8e448a330b3e40a50859e6488bee07f22"
+checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
 [[package]]
 name = "bitflags"
@@ -287,7 +287,7 @@ checksum = "bcfcc3cd946cb52f0bbfdbbcfa2f4e24f75ebb6c0e1002f7c25904fada18b9ec"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -324,9 +324,9 @@ dependencies = [
 
 [[package]]
 name = "cc"
-version = "1.1.34"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67b9470d453346108f93a59222a9a1a5724db32d0a4727b7ab7ace4b4d822dc9"
+checksum = "fd9de9f2205d5ef3fd67e685b0df337994ddd4495e2a28d185500d0e1edfea47"
 dependencies = [
  "jobserver",
  "libc",
@@ -385,9 +385,9 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.20"
+version = "4.5.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97f376d85a664d5837dbae44bf546e6477a679ff6610010f17276f686d867e8"
+checksum = "fb3b4b9e5a7c7514dfa52869339ee98b3156b0bfb4e8a77c4ff4babb64b1604f"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -395,9 +395,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.20"
+version = "4.5.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19bc80abd44e4bed93ca373a0704ccbd1b710dc5749406201bb018272808dc54"
+checksum = "b17a95aa67cc7b5ebd32aa5370189aa0d79069ef1c64ce893bd30fb24bff20ec"
 dependencies = [
  "anstream",
  "anstyle",
@@ -414,14 +414,14 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
 name = "clap_lex"
-version = "0.7.2"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1462739cb27611015575c0c11df5df7601141071f07518d56fcc1be504cbec97"
+checksum = "afb84c814227b90d6895e01398aee0d8033c00e7466aca416fb6a8e0eb19d8a7"
 
 [[package]]
 name = "cocoa"
@@ -432,7 +432,7 @@ dependencies = [
  "bitflags 1.3.2",
  "block",
  "cocoa-foundation",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics",
  "foreign-types",
  "libc",
@@ -447,7 +447,7 @@ checksum = "8c6234cbb2e4c785b456c0644748b1ac416dd045799740356f8363dfe00c93f7"
 dependencies = [
  "bitflags 1.3.2",
  "block",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics-types",
  "libc",
  "objc",
@@ -469,37 +469,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
-[[package]]
-name = "com"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e17887fd17353b65b1b2ef1c526c83e26cd72e74f598a8dc1bee13a48f3d9f6"
-dependencies = [
- "com_macros",
-]
-
-[[package]]
-name = "com_macros"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d375883580a668c7481ea6631fc1a8863e33cc335bf56bfad8d7e6d4b04b13a5"
-dependencies = [
- "com_macros_support",
- "proc-macro2",
- "syn 1.0.109",
-]
-
-[[package]]
-name = "com_macros_support"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ad899a1087a9296d5644792d7cb72b8e34c1bec8e7d4fbc002230169a6e8710c"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 1.0.109",
-]
-
 [[package]]
 name = "combine"
 version = "4.6.7"
@@ -529,6 +498,16 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "core-foundation"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b55271e5c8c478ad3f38ad24ef34923091e0548492a266d19b3c0b4d82574c63"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation-sys"
 version = "0.8.7"
@@ -542,7 +521,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c07782be35f9e1140080c6b96f0d44b739e2278479f64e02fdab4e32dfd8b081"
 dependencies = [
  "bitflags 1.3.2",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics-types",
  "foreign-types",
  "libc",
@@ -555,7 +534,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "45390e6114f68f718cc7a830514a96f903cccd70d02a8f6d9f643ac4ba45afaf"
 dependencies = [
  "bitflags 1.3.2",
- "core-foundation",
+ "core-foundation 0.9.4",
  "libc",
 ]
 
@@ -614,17 +593,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "96a6ac251f4a2aca6b3f91340350eab87ae57c3f127ffeb585e92bd336717991"
 
-[[package]]
-name = "d3d12"
-version = "22.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdbd1f579714e3c809ebd822c81ef148b1ceaeb3d535352afc73fd0c4c6a0017"
-dependencies = [
- "bitflags 2.6.0",
- "libloading",
- "winapi",
-]
-
 [[package]]
 name = "dasp_sample"
 version = "0.11.0"
@@ -710,6 +678,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
 [[package]]
 name = "foreign-types"
 version = "0.5.0"
@@ -728,7 +702,7 @@ checksum = "1a5c6c585bc94aaf2c7b51dd4c2ba22680844aba4c687be581871a6f518c5742"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -758,6 +732,40 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "gilrs"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbb2c998745a3c1ac90f64f4f7b3a54219fd3612d7705e7798212935641ed18f"
+dependencies = [
+ "fnv",
+ "gilrs-core",
+ "log",
+ "uuid",
+ "vec_map",
+]
+
+[[package]]
+name = "gilrs-core"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "495af945e45efd6386227613cd9fb7bd7c43d3c095040e30c5304c489e6abed5"
+dependencies = [
+ "core-foundation 0.10.0",
+ "inotify",
+ "io-kit-sys",
+ "js-sys",
+ "libc",
+ "libudev-sys",
+ "log",
+ "nix",
+ "uuid",
+ "vec_map",
+ "wasm-bindgen",
+ "web-sys",
+ "windows 0.58.0",
+]
+
 [[package]]
 name = "gl_generator"
 version = "0.14.0"
@@ -777,9 +785,9 @@ checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
 
 [[package]]
 name = "glow"
-version = "0.13.1"
+version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd348e04c43b32574f2de31c8bb397d96c9fcfa1371bd4ca6d8bdc464ab121b1"
+checksum = "d51fa363f025f5c111e03f13eda21162faeacb6911fe8caa0c0349f9cf0c4483"
 dependencies = [
  "js-sys",
  "slotmap",
@@ -817,15 +825,14 @@ dependencies = [
 
 [[package]]
 name = "gpu-allocator"
-version = "0.26.0"
+version = "0.27.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fdd4240fc91d3433d5e5b0fc5b67672d771850dc19bbee03c1381e19322803d7"
+checksum = "c151a2a5ef800297b4e79efa4f4bec035c5f51d5ae587287c9b952bdf734cacd"
 dependencies = [
  "log",
  "presser",
  "thiserror",
- "winapi",
+ "windows 0.58.0",
- "windows 0.52.0",
 ]
 
 [[package]]
@@ -860,24 +867,9 @@ dependencies = [
 
 [[package]]
 name = "hashbrown"
-version = "0.15.0"
+version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e087f84d4f86bf4b218b927129862374b72199ae7d8657835f1e89000eea4fb"
+checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"
-
-[[package]]
-name = "hassle-rs"
-version = "0.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af2a7e73e1f34c48da31fb668a907f250794837e08faa144fd24f0b8b741e890"
-dependencies = [
- "bitflags 2.6.0",
- "com",
- "libc",
- "libloading",
- "thiserror",
- "widestring",
- "winapi",
-]
 
 [[package]]
 name = "heck"
@@ -934,7 +926,7 @@ dependencies = [
 [[package]]
 name = "imgui-wgpu"
 version = "0.25.0"
-source = "git+https://github.com/Yatekii/imgui-wgpu-rs?rev=2edd348#2edd348a0fc11e9e72f19060c34a6e45c760b116"
+source = "git+https://github.com/SupernaviX/imgui-wgpu-rs?rev=5bb8673#5bb8673e256b6b5ad497a3baa2dc151545025f12"
 dependencies = [
  "bytemuck",
  "imgui",
@@ -960,7 +952,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
 dependencies = [
  "equivalent",
- "hashbrown 0.15.0",
+ "hashbrown 0.15.1",
+]
+
+[[package]]
+name = "inotify"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f37dccff2791ab604f9babef0ba14fbe0be30bd368dc541e2b08d07c8aa908f3"
+dependencies = [
+ "bitflags 2.6.0",
+ "inotify-sys",
+ "libc",
+]
+
+[[package]]
+name = "inotify-sys"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e05c02b5e89bff3b946cedeca278abc628fe811e604f027c45a8aa3cf793d0eb"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "io-kit-sys"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "617ee6cf8e3f66f3b4ea67a4058564628cde41901316e19f559e14c7c72c5e7b"
+dependencies = [
+ "core-foundation-sys",
+ "mach2",
 ]
 
 [[package]]
@@ -1046,9 +1068,9 @@ checksum = "e2db585e1d738fc771bf08a151420d3ed193d9d895a36df7f6f8a9456b911ddc"
 
 [[package]]
 name = "libc"
-version = "0.2.161"
+version = "0.2.162"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e9489c2807c139ffd9c1794f4af0ebe86a828db53ecdc7fea2111d0fed085d1"
+checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
 
 [[package]]
 name = "libloading"
@@ -1071,6 +1093,16 @@ dependencies = [
  "redox_syscall 0.5.7",
 ]
 
+[[package]]
+name = "libudev-sys"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c8469b4a23b962c1396b9b451dda50ef5b283e8dd309d69033475fa9b334324"
+dependencies = [
+ "libc",
+ "pkg-config",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.14"
@@ -1161,9 +1193,9 @@ checksum = "e53debba6bda7a793e5f99b8dacf19e626084f525f7829104ba9898f367d85ff"
 
 [[package]]
 name = "naga"
-version = "22.1.0"
+version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bd5a652b6faf21496f2cfd88fc49989c8db0825d1f6746b1a71a6ede24a63ad"
+checksum = "3d5941e45a15b53aad4375eedf02033adb7a28931eedc31117faffa52e6a857e"
 dependencies = [
  "arrayvec",
  "bit-set",
@@ -1189,7 +1221,7 @@ dependencies = [
  "ascii",
  "block",
  "cocoa",
- "core-foundation",
+ "core-foundation 0.9.4",
  "dirs-next",
  "objc",
  "objc-foundation",
@@ -1256,6 +1288,18 @@ dependencies = [
  "jni-sys",
 ]
 
+[[package]]
+name = "nix"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "71e2746dc3a24dd78b3cfcb7be93368c6de9963d30f43a6a73998a9cf4b17b46"
+dependencies = [
+ "bitflags 2.6.0",
+ "cfg-if",
+ "cfg_aliases 0.2.1",
+ "libc",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -1283,7 +1327,7 @@ checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -1322,7 +1366,7 @@ dependencies = [
  "proc-macro-crate",
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -1656,7 +1700,7 @@ checksum = "3c0f5fad0874fc7abcd4d750e76917eaebbecaa2c20bde22e1dbeeba8beb758c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -1673,9 +1717,9 @@ checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
 
 [[package]]
 name = "polling"
-version = "3.7.3"
+version = "3.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cc2790cd301dec6cd3b7a025e4815cf825724a51c98dccfe6a3e55f05ffb6511"
+checksum = "a604568c3202727d1507653cb121dbd627a58684eb09a820fd746bee38b4442f"
 dependencies = [
  "cfg-if",
  "concurrent-queue",
@@ -1819,9 +1863,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.8"
+version = "0.4.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "368758f23274712b504848e9d5a6f010445cc8b87a7cdb4d7cbee666c1288da3"
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -1881,9 +1925,9 @@ dependencies = [
 
 [[package]]
 name = "rustix"
-version = "0.38.38"
+version = "0.38.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa260229e6538e52293eeb577aabd09945a09d6d9cc0fc550ed7529056c2e32a"
+checksum = "99e4ea3e1cdc4b559b8e5650f9c8e5998e3e5c1343b4eaf034565f32318d63c0"
 dependencies = [
  "bitflags 2.6.0",
  "errno",
@@ -1934,22 +1978,22 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.214"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f55c3193aca71c12ad7890f1785d2b73e1b9f63a0bbc353c08ef26fe03fc56b5"
+checksum = "6513c1ad0b11a9376da888e3e0baa0077f1aed55c17f50e7b2397136129fb88f"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.214"
+version = "1.0.215"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
+checksum = "ad1e866f866923f252f05c889987993144fb74e722403468a4ebd70c3cd756c0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -1968,6 +2012,7 @@ dependencies = [
  "cc",
  "clap",
  "cpal",
+ "gilrs",
  "imgui",
  "imgui-wgpu",
  "imgui-winit-support",
@@ -1980,6 +2025,7 @@ dependencies = [
  "rubato",
  "thread-priority",
  "wgpu",
+ "windows 0.58.0",
  "winit",
 ]
 
@@ -2074,17 +2120,6 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
-[[package]]
-name = "syn"
-version = "1.0.109"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
 [[package]]
 name = "syn"
 version = "2.0.87"
@@ -2107,22 +2142,22 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.66"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d171f59dbaa811dbbb1aee1e73db92ec2b122911a48e1390dfe327a821ddede"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.66"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b08be0f17bd307950653ce45db00cd31200d82b624b36e181337d9c7d92765b5"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]
 
 [[package]]
@@ -2243,6 +2278,18 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
+[[package]]
+name = "uuid"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8c5f0a0af699448548ad1a2fbf920fb4bee257eae39953ba95cb84891a0446a"
+
+[[package]]
+name = "vec_map"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
+
 [[package]]
 name = "version_check"
 version = "0.9.5"
@@ -2297,7 +2344,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
  "wasm-bindgen-shared",
 ]
 
@@ -2331,7 +2378,7 @@ checksum = "26c6ab57572f7a24a4985830b120de1594465e5d500f24afe89e16b4e833ef68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -2483,9 +2530,9 @@ dependencies = [
 
 [[package]]
 name = "wgpu"
-version = "22.1.0"
+version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e1d1c4ba43f80542cf63a0a6ed3134629ae73e8ab51e4b765a67f3aa062eb433"
+checksum = "76ab52f2d3d18b70d5ab8dd270a1cff3ebe6dbe4a7d13c1cc2557138a9777fdc"
 dependencies = [
  "arrayvec",
  "cfg_aliases 0.1.1",
@@ -2508,9 +2555,9 @@ dependencies = [
 
 [[package]]
 name = "wgpu-core"
-version = "22.1.0"
+version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0348c840d1051b8e86c3bcd31206080c5e71e5933dabd79be1ce732b0b2f089a"
+checksum = "0e0c68e7b6322a03ee5b83fcd92caeac5c2a932f6457818179f4652ad2a9c065"
 dependencies = [
  "arrayvec",
  "bit-vec",
@@ -2533,9 +2580,9 @@ dependencies = [
 
 [[package]]
 name = "wgpu-hal"
-version = "22.0.0"
+version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f6bbf4b4de8b2a83c0401d9e5ae0080a2792055f25859a02bf9be97952bbed4f"
+checksum = "de6e7266b869de56c7e3ed72a954899f71d14fec6cc81c102b7530b92947601b"
 dependencies = [
  "android_system_properties",
  "arrayvec",
@@ -2543,15 +2590,14 @@ dependencies = [
  "bit-set",
  "bitflags 2.6.0",
  "block",
+ "bytemuck",
  "cfg_aliases 0.1.1",
  "core-graphics-types",
- "d3d12",
  "glow",
  "glutin_wgl_sys",
  "gpu-alloc",
  "gpu-allocator",
  "gpu-descriptor",
- "hassle-rs",
  "js-sys",
  "khronos-egl",
  "libc",
@@ -2573,14 +2619,15 @@ dependencies = [
  "wasm-bindgen",
  "web-sys",
  "wgpu-types",
- "winapi",
+ "windows 0.58.0",
+ "windows-core 0.58.0",
 ]
 
 [[package]]
 name = "wgpu-types"
-version = "22.0.0"
+version = "23.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc9d91f0e2c4b51434dfa6db77846f2793149d8e73f800fa2e41f52b8eac3c5d"
+checksum = "610f6ff27778148c31093f3b03abc4840f9636d58d597ca2f5977433acfe0068"
 dependencies = [
  "bitflags 2.6.0",
  "js-sys",
@@ -2599,12 +2646,6 @@ dependencies = [
  "rustix",
 ]
 
-[[package]]
-name = "widestring"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7219d36b6eac893fa81e84ebe06485e7dcbb616177469b142df14f1f4deb1311"
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -2636,16 +2677,6 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
-[[package]]
-name = "windows"
-version = "0.52.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e48a53791691ab099e5e2ad123536d0fff50652600abaf43bbf952894110d0be"
-dependencies = [
- "windows-core 0.52.0",
- "windows-targets 0.52.6",
-]
-
 [[package]]
 name = "windows"
 version = "0.54.0"
@@ -2657,11 +2688,12 @@ dependencies = [
 ]
 
 [[package]]
-name = "windows-core"
+name = "windows"
-version = "0.52.0"
+version = "0.58.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+checksum = "dd04d41d93c4992d421894c18c8b43496aa748dd4c081bac0dc93eb0489272b6"
 dependencies = [
+ "windows-core 0.58.0",
  "windows-targets 0.52.6",
 ]
 
@@ -2671,10 +2703,45 @@ version = "0.54.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "12661b9c89351d684a50a8a643ce5f608e20243b9fb84687800163429f161d65"
 dependencies = [
- "windows-result",
+ "windows-result 0.1.2",
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-result 0.2.0",
+ "windows-strings",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.1.2"
@@ -2684,6 +2751,25 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "windows-result"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
+dependencies = [
+ "windows-result 0.2.0",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.45.0"
@@ -2904,7 +2990,7 @@ dependencies = [
  "calloop",
  "cfg_aliases 0.2.1",
  "concurrent-queue",
- "core-foundation",
+ "core-foundation 0.9.4",
  "core-graphics",
  "cursor-icon",
  "dpi",
@@ -3009,9 +3095,9 @@ checksum = "b9cc00251562a284751c9973bace760d86c0276c471b4be569fe6b068ee97a56"
 
 [[package]]
 name = "xml-rs"
-version = "0.8.22"
+version = "0.8.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af4e2e2f7cba5a093896c1e150fbfe177d1883e7448200efb81d40b9d339ef26"
+checksum = "af310deaae937e48a26602b730250b4949e125f468f11e6990be3e5304ddd96f"
 
 [[package]]
 name = "zerocopy"
@@ -3030,5 +3116,5 @@ checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.87",
+ "syn",
 ]

Cargo.toml

@@ -9,8 +9,9 @@ bitflags = "2"
 bytemuck = { version = "1", features = ["derive"] }
 clap = { version = "4", features = ["derive"] }
 cpal = "0.15"
+gilrs = "0.11"
 imgui = { version = "0.12", features = ["tables-api"] }
-imgui-wgpu = { git = "https://github.com/Yatekii/imgui-wgpu-rs", rev = "2edd348" }
+imgui-wgpu = { git = "https://github.com/SupernaviX/imgui-wgpu-rs", rev = "5bb8673" }
 imgui-winit-support = "0.13"
 itertools = "0.13"
 native-dialog = "0.7"
@@ -20,9 +21,12 @@ pollster = "0.4"
 rtrb = "0.3"
 rubato = "0.16"
 thread-priority = "1"
-wgpu = "22.1"
+wgpu = "23.0"
 winit = "0.30"
 
+[target.'cfg(windows)'.dependencies]
+windows = { version = "0.58", features = ["Win32_System_Threading"] }
+
 [build-dependencies]
 cc = "1"
 

build.rs

@@ -5,8 +5,10 @@ fn main() {
     cc::Build::new()
         .include(Path::new("shrooms-vb-core/core"))
         .opt_level(2)
-        .flag_if_supported("-flto")
         .flag_if_supported("-fno-strict-aliasing")
+        .define("VB_LITTLE_ENDIAN", None)
+        .define("VB_SIGNED_PROPAGATE", None)
+        .define("VB_DIV_GENERIC", None)
         .file(Path::new("shrooms-vb-core/core/vb.c"))
         .compile("vb");
 }

shrooms-vb-core

@@ -1 +1 @@
-Subproject commit ae22c95dbee3d0b338168bfdf98143e6eddc6c70
+Subproject commit f45636a491a50c5847b92a51912e6e19f21af98f

src/app.rs

@@ -1,10 +1,8 @@
-use std::{
+use std::{collections::HashMap, fmt::Debug, thread};
-    collections::HashMap,
-    fmt::Debug,
-    sync::{Arc, RwLock},
-};
 
 use game::GameWindow;
+use gilrs::{EventType, Gilrs};
+use input::InputWindow;
 use winit::{
     application::ApplicationHandler,
     event::{Event, WindowEvent},
@@ -13,9 +11,9 @@ use winit::{
 };
 
 use crate::{
-    controller::ControllerState,
+    controller::ControllerManager,
-    emulator::{EmulatorClient, EmulatorCommand},
+    emulator::{EmulatorClient, SimId},
-    input::InputMapper,
+    input::MappingProvider,
 };
 
 mod common;
@@ -25,34 +23,40 @@ mod input;
 pub struct App {
     windows: HashMap<WindowId, Box<dyn AppWindow>>,
     client: EmulatorClient,
-    input_mapper: Arc<RwLock<InputMapper>>,
+    mappings: MappingProvider,
-    controller: ControllerState,
+    controllers: ControllerManager,
     proxy: EventLoopProxy<UserEvent>,
+    player_2_window: Option<WindowId>,
 }
 
 impl App {
     pub fn new(client: EmulatorClient, proxy: EventLoopProxy<UserEvent>) -> Self {
-        let input_mapper = Arc::new(RwLock::new(InputMapper::new()));
+        let mappings = MappingProvider::new();
-        let controller = ControllerState::new(input_mapper.clone());
+        let controllers = ControllerManager::new(client.clone(), &mappings);
+        {
+            let mappings = mappings.clone();
+            let proxy = proxy.clone();
+            thread::spawn(|| process_gamepad_input(mappings, proxy));
+        }
         Self {
             windows: HashMap::new(),
             client,
-            input_mapper,
+            mappings,
-            controller,
+            controllers,
             proxy,
+            player_2_window: None,
         }
     }
 }
 
 impl ApplicationHandler<UserEvent> for App {
     fn resumed(&mut self, event_loop: &ActiveEventLoop) {
-        let mut window = GameWindow::new(
+        let window = GameWindow::new(
             event_loop,
+            SimId::Player1,
             self.client.clone(),
-            self.input_mapper.clone(),
             self.proxy.clone(),
         );
-        window.init();
         self.windows.insert(window.id(), Box::new(window));
     }
 
@@ -63,10 +67,7 @@ impl ApplicationHandler<UserEvent> for App {
         event: WindowEvent,
     ) {
         if let WindowEvent::KeyboardInput { event, .. } = &event {
-            if self.controller.key_event(event) {
+            self.controllers.handle_key_event(event);
-                self.client
-                    .send_command(EmulatorCommand::SetKeys(self.controller.pressed()));
-            }
         }
         let Some(window) = self.windows.get_mut(&window_id) else {
             return;
@@ -74,15 +75,35 @@ impl ApplicationHandler<UserEvent> for App {
         window.handle_event(event_loop, &Event::WindowEvent { window_id, event });
     }
 
-    fn user_event(&mut self, _event_loop: &ActiveEventLoop, event: UserEvent) {
+    fn user_event(&mut self, event_loop: &ActiveEventLoop, event: UserEvent) {
         match event {
-            UserEvent::OpenWindow(mut window) => {
+            UserEvent::OpenInputWindow => {
-                window.init();
+                let window =
-                self.windows.insert(window.id(), window);
+                    InputWindow::new(event_loop, self.mappings.clone(), self.proxy.clone());
+                self.windows.insert(window.id(), Box::new(window));
+            }
+            UserEvent::OpenPlayer2Window => {
+                if self.player_2_window.is_some() {
+                    return;
+                }
+                let window = GameWindow::new(
+                    event_loop,
+                    SimId::Player2,
+                    self.client.clone(),
+                    self.proxy.clone(),
+                );
+                self.player_2_window = Some(window.id());
+                self.windows.insert(window.id(), Box::new(window));
+            }
+            UserEvent::Close(window_id) => {
+                if self.player_2_window == Some(window_id) {
+                    self.player_2_window.take();
                 }
-            UserEvent::CloseWindow(window_id) => {
                 self.windows.remove(&window_id);
             }
+            UserEvent::GamepadEvent(event) => {
+                self.controllers.handle_gamepad_event(&event);
+            }
         }
     }
 
@@ -112,20 +133,32 @@ impl ApplicationHandler<UserEvent> for App {
 
 pub trait AppWindow {
     fn id(&self) -> WindowId;
-    fn init(&mut self);
     fn handle_event(&mut self, event_loop: &ActiveEventLoop, event: &Event<UserEvent>);
 }
 
+#[derive(Debug)]
 pub enum UserEvent {
-    OpenWindow(Box<dyn AppWindow>),
+    OpenInputWindow,
-    CloseWindow(WindowId),
+    OpenPlayer2Window,
+    Close(WindowId),
+    GamepadEvent(gilrs::Event),
 }
 
-impl Debug for UserEvent {
+fn process_gamepad_input(mappings: MappingProvider, proxy: EventLoopProxy<UserEvent>) {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    let Ok(mut gilrs) = Gilrs::new() else {
-        match self {
+        eprintln!("could not connect gamepad listener");
-            Self::OpenWindow(window) => f.debug_tuple("OpenWindow").field(&window.id()).finish(),
+        return;
-            Self::CloseWindow(window_id) => f.debug_tuple("CloseWindow").field(window_id).finish(),
+    };
+    while let Some(event) = gilrs.next_event_blocking(None) {
+        if event.event == EventType::Connected {
+            let Some(gamepad) = gilrs.connected_gamepad(event.id) else {
+                continue;
+            };
+            mappings.map_gamepad(SimId::Player1, &gamepad);
+        }
+        if proxy.send_event(UserEvent::GamepadEvent(event)).is_err() {
+            // main thread has closed! we done
+            return;
         }
     }
 }

src/app/game.rs

@@ -1,7 +1,4 @@
-use std::{
+use std::time::Instant;
-    sync::{Arc, RwLock},
-    time::Instant,
-};
 use wgpu::util::DeviceExt as _;
 use winit::{
     dpi::LogicalSize,
@@ -11,24 +8,22 @@ use winit::{
 };
 
 use crate::{
-    emulator::{EmulatorClient, EmulatorCommand},
+    emulator::{EmulatorClient, EmulatorCommand, SimId},
-    input::InputMapper,
+    graphics::TextureSink,
-    renderer::GameRenderer,
 };
 
 use super::{
     common::{ImguiState, WindowState, WindowStateBuilder},
-    input::InputWindow,
     AppWindow, UserEvent,
 };
 
 pub struct GameWindow {
     window: WindowState,
-    imgui: Option<ImguiState>,
+    imgui: ImguiState,
     pipeline: wgpu::RenderPipeline,
     bind_group: wgpu::BindGroup,
+    sim_id: SimId,
     client: EmulatorClient,
-    input_mapper: Arc<RwLock<InputMapper>>,
     proxy: EventLoopProxy<UserEvent>,
     paused_due_to_minimize: bool,
 }
@@ -36,22 +31,23 @@ pub struct GameWindow {
 impl GameWindow {
     pub fn new(
         event_loop: &ActiveEventLoop,
+        sim_id: SimId,
         client: EmulatorClient,
-        input_mapper: Arc<RwLock<InputMapper>>,
         proxy: EventLoopProxy<UserEvent>,
     ) -> Self {
+        let title = if sim_id == SimId::Player2 {
+            "Shrooms VB (Player 2)"
+        } else {
+            "Shrooms VB"
+        };
         let window = WindowStateBuilder::new(event_loop)
-            .with_title("Shrooms VB")
+            .with_title(title)
             .with_inner_size(LogicalSize::new(384, 244))
             .build();
         let device = &window.device;
 
-        let eyes = Arc::new(GameRenderer::create_texture(device, "eye"));
+        let (sink, texture_view) = TextureSink::new(device, window.queue.clone());
-        client.send_command(EmulatorCommand::SetRenderer(GameRenderer {
+        client.send_command(EmulatorCommand::SetRenderer(sim_id, sink));
-            queue: window.queue.clone(),
-            eyes: eyes.clone(),
-        }));
-        let eyes = eyes.create_view(&wgpu::TextureViewDescriptor::default());
         let sampler = device.create_sampler(&wgpu::SamplerDescriptor::default());
         let colors = Colors {
             left: [1.0, 0.0, 0.0, 1.0],
@@ -100,7 +96,7 @@ impl GameWindow {
             entries: &[
                 wgpu::BindGroupEntry {
                     binding: 0,
-                    resource: wgpu::BindingResource::TextureView(&eyes),
+                    resource: wgpu::BindingResource::TextureView(&texture_view),
                 },
                 wgpu::BindGroupEntry {
                     binding: 1,
@@ -125,13 +121,13 @@ impl GameWindow {
             layout: Some(&render_pipeline_layout),
             vertex: wgpu::VertexState {
                 module: &shader,
-                entry_point: "vs_main",
+                entry_point: Some("vs_main"),
                 buffers: &[],
                 compilation_options: wgpu::PipelineCompilationOptions::default(),
             },
             fragment: Some(wgpu::FragmentState {
                 module: &shader,
-                entry_point: "fs_main",
+                entry_point: Some("fs_main"),
                 targets: &[Some(wgpu::ColorTargetState {
                     format: wgpu::TextureFormat::Bgra8UnormSrgb,
                     blend: Some(wgpu::BlendState::REPLACE),
@@ -158,13 +154,15 @@ impl GameWindow {
             cache: None,
         });
 
+        let imgui = ImguiState::new(&window);
+
         Self {
             window,
-            imgui: None,
+            imgui,
             pipeline: render_pipeline,
             bind_group,
+            sim_id,
             client,
-            input_mapper,
             proxy,
             paused_due_to_minimize: false,
         }
@@ -172,7 +170,7 @@ impl GameWindow {
 
     fn draw(&mut self, event_loop: &ActiveEventLoop) {
         let window = &mut self.window;
-        let imgui = self.imgui.as_mut().unwrap();
+        let imgui = &mut self.imgui;
         let mut context = imgui.context.lock().unwrap();
         let mut new_size = None;
 
@@ -204,7 +202,8 @@ impl GameWindow {
                         .show_open_single_file()
                         .unwrap();
                     if let Some(path) = rom {
-                        self.client.send_command(EmulatorCommand::LoadGame(path));
+                        self.client
+                            .send_command(EmulatorCommand::LoadGame(self.sim_id, path));
                     }
                 }
                 if ui.menu_item("Quit") {
@@ -212,8 +211,8 @@ impl GameWindow {
                 }
             });
             ui.menu("Emulation", || {
-                let has_game = self.client.has_game();
+                let has_game = self.client.has_game(self.sim_id);
-                if self.client.is_running() {
+                if self.client.is_running(self.sim_id) {
                     if ui.menu_item_config("Pause").enabled(has_game).build() {
                         self.client.send_command(EmulatorCommand::Pause);
                     }
@@ -221,7 +220,8 @@ impl GameWindow {
                     self.client.send_command(EmulatorCommand::Resume);
                 }
                 if ui.menu_item_config("Reset").enabled(has_game).build() {
-                    self.client.send_command(EmulatorCommand::Reset);
+                    self.client
+                        .send_command(EmulatorCommand::Reset(self.sim_id));
                 }
             });
             ui.menu("Video", || {
@@ -240,14 +240,26 @@ impl GameWindow {
             });
             ui.menu("Input", || {
                 if ui.menu_item("Bind Inputs") {
-                    let input_window = Box::new(InputWindow::new(
+                    self.proxy.send_event(UserEvent::OpenInputWindow).unwrap();
-                        event_loop,
+                }
-                        self.input_mapper.clone(),
+            });
-                        self.proxy.clone(),
+            ui.menu("Multiplayer", || {
-                    ));
+                if self.sim_id == SimId::Player1
-                    self.proxy
+                    && !self.client.has_player_2()
-                        .send_event(UserEvent::OpenWindow(input_window))
+                    && ui.menu_item("Open Player 2")
-                        .unwrap();
+                {
+                    self.client
+                        .send_command(EmulatorCommand::StartSecondSim(None));
+                    self.proxy.send_event(UserEvent::OpenPlayer2Window).unwrap();
+                }
+                if self.client.has_player_2() {
+                    let linked = self.client.are_sims_linked();
+                    if linked && ui.menu_item("Unlink") {
+                        self.client.send_command(EmulatorCommand::Unlink);
+                    }
+                    if !linked && ui.menu_item("Link") {
+                        self.client.send_command(EmulatorCommand::Link);
+                    }
                 }
             });
         });
@@ -321,18 +333,13 @@ impl AppWindow for GameWindow {
         self.window.window.id()
     }
 
-    fn init(&mut self) {
-        self.imgui = Some(ImguiState::new(&self.window));
-        self.window.window.request_redraw();
-    }
-
     fn handle_event(&mut self, event_loop: &ActiveEventLoop, event: &Event<UserEvent>) {
         match event {
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::Resized(size) => {
                     self.window.handle_resize(size);
                     if self.window.minimized {
-                        if self.client.is_running() {
+                        if self.client.is_running(self.sim_id) {
                             self.client.send_command(EmulatorCommand::Pause);
                             self.paused_due_to_minimize = true;
                         }
@@ -341,7 +348,14 @@ impl AppWindow for GameWindow {
                         self.paused_due_to_minimize = false;
                     }
                 }
-                WindowEvent::CloseRequested => event_loop.exit(),
+                WindowEvent::CloseRequested => {
+                    if self.sim_id == SimId::Player2 {
+                        self.client.send_command(EmulatorCommand::StopSecondSim);
+                        self.proxy.send_event(UserEvent::Close(self.id())).unwrap();
+                    } else {
+                        event_loop.exit();
+                    }
+                }
                 WindowEvent::RedrawRequested => self.draw(event_loop),
                 _ => (),
             },
@@ -351,9 +365,7 @@ impl AppWindow for GameWindow {
             _ => (),
         }
         let window = &self.window;
-        let Some(imgui) = self.imgui.as_mut() else {
+        let imgui = &mut self.imgui;
-            return;
-        };
         let mut context = imgui.context.lock().unwrap();
         imgui
             .platform

src/app/input.rs

@@ -1,16 +1,15 @@
-use std::{
+use std::time::Instant;
-    sync::{Arc, RwLock},
-    time::Instant,
-};
 
 use winit::{
     dpi::LogicalSize,
     event::{Event, KeyEvent, WindowEvent},
     event_loop::{ActiveEventLoop, EventLoopProxy},
-    platform::modifier_supplement::KeyEventExtModifierSupplement,
 };
 
-use crate::{input::InputMapper, shrooms_vb_core::VBKey};
+use crate::{
+    emulator::{SimId, VBKey},
+    input::MappingProvider,
+};
 
 use super::{
     common::{ImguiState, UiExt, WindowState, WindowStateBuilder},
@@ -19,10 +18,10 @@ use super::{
 
 pub struct InputWindow {
     window: WindowState,
-    imgui: Option<ImguiState>,
+    imgui: ImguiState,
-    input_mapper: Arc<RwLock<InputMapper>>,
+    mappings: MappingProvider,
     proxy: EventLoopProxy<UserEvent>,
-    now_binding: Option<VBKey>,
+    now_binding: Option<(SimId, VBKey)>,
 }
 
 const KEY_NAMES: [(VBKey, &str); 14] = [
@@ -45,17 +44,18 @@ const KEY_NAMES: [(VBKey, &str); 14] = [
 impl InputWindow {
     pub fn new(
         event_loop: &ActiveEventLoop,
-        input_mapper: Arc<RwLock<InputMapper>>,
+        mappings: MappingProvider,
         proxy: EventLoopProxy<UserEvent>,
     ) -> Self {
         let window = WindowStateBuilder::new(event_loop)
             .with_title("Bind Inputs")
             .with_inner_size(LogicalSize::new(600, 400))
             .build();
+        let imgui = ImguiState::new(&window);
         Self {
             window,
-            imgui: None,
+            imgui,
-            input_mapper,
+            mappings,
             now_binding: None,
             proxy,
         }
@@ -63,7 +63,7 @@ impl InputWindow {
 
     fn draw(&mut self) {
         let window = &mut self.window;
-        let imgui = self.imgui.as_mut().unwrap();
+        let imgui = &mut self.imgui;
         let mut context = imgui.context.lock().unwrap();
 
         let now = Instant::now();
@@ -85,11 +85,12 @@ impl InputWindow {
             .expect("Failed to prepare frame");
         let ui = context.new_frame();
 
-        let mut render_key_bindings = || {
+        let mut render_key_bindings = |sim_id: SimId| {
+            let mappings = self.mappings.for_sim(sim_id);
             if let Some(table) = ui.begin_table("controls", 2) {
                 let binding_names = {
-                    let mapper = self.input_mapper.read().unwrap();
+                    let mapping = mappings.read().unwrap();
-                    mapper.binding_names()
+                    mapping.keyboard_mapping_names()
                 };
                 ui.table_next_row();
 
@@ -100,20 +101,20 @@ impl InputWindow {
                     ui.group(|| {
                         ui.right_align_text(name, space * 0.20);
                         ui.same_line();
-                        let label_text = if self.now_binding == Some(key) {
+                        let label_text = if self.now_binding == Some((sim_id, key)) {
                             "Press any input"
                         } else {
                             binding.unwrap_or("")
                         };
                         let label = format!("{}##{}", label_text, name);
                         if ui.button_with_size(label, [space * 0.60, 0.0]) {
-                            self.now_binding = Some(key);
+                            self.now_binding = Some((sim_id, key));
                         }
                     });
                     ui.same_line();
                     if ui.button(format!("Clear##{name}")) {
-                        let mut mapper = self.input_mapper.write().unwrap();
+                        let mut mapping = mappings.write().unwrap();
-                        mapper.clear_binding(key);
+                        mapping.clear_keyboard_mappings(key);
                     }
                 }
 
@@ -124,7 +125,11 @@ impl InputWindow {
         if let Some(window) = ui.fullscreen_window() {
             if let Some(tabs) = ui.tab_bar("tabs") {
                 if let Some(tab) = ui.tab_item("Player 1") {
-                    render_key_bindings();
+                    render_key_bindings(SimId::Player1);
+                    tab.end();
+                }
+                if let Some(tab) = ui.tab_item("Player 2") {
+                    render_key_bindings(SimId::Player2);
                     tab.end();
                 }
                 tabs.end();
@@ -175,11 +180,11 @@ impl InputWindow {
         if !event.state.is_pressed() {
             return;
         }
-        let Some(vb) = self.now_binding.take() else {
+        let Some((sim_id, vb)) = self.now_binding.take() else {
             return;
         };
-        let mut mapper = self.input_mapper.write().unwrap();
+        let mut mappings = self.mappings.for_sim(sim_id).write().unwrap();
-        mapper.bind_key(vb, event.key_without_modifiers());
+        mappings.add_keyboard_mapping(vb, event.physical_key);
     }
 }
 
@@ -188,19 +193,13 @@ impl AppWindow for InputWindow {
         self.window.window.id()
     }
 
-    fn init(&mut self) {
-        self.imgui = Some(ImguiState::new(&self.window));
-        self.window.window.request_redraw();
-    }
-
     fn handle_event(&mut self, _: &ActiveEventLoop, event: &Event<UserEvent>) {
         match event {
             Event::WindowEvent { event, .. } => match event {
                 WindowEvent::Resized(size) => self.window.handle_resize(size),
-                WindowEvent::CloseRequested => self
+                WindowEvent::CloseRequested => {
-                    .proxy
+                    self.proxy.send_event(UserEvent::Close(self.id())).unwrap()
-                    .send_event(UserEvent::CloseWindow(self.id()))
+                }
-                    .unwrap(),
                 WindowEvent::KeyboardInput { event, .. } => self.try_bind_key(event),
                 WindowEvent::RedrawRequested => self.draw(),
                 _ => (),
@@ -212,9 +211,7 @@ impl AppWindow for InputWindow {
         }
 
         let window = &self.window;
-        let Some(imgui) = self.imgui.as_mut() else {
+        let imgui = &mut self.imgui;
-            return;
-        };
         let mut context = imgui.context.lock().unwrap();
         imgui
             .platform

src/audio.rs

@@ -1,3 +1,5 @@
+use std::time::Duration;
+
 use anyhow::{bail, Result};
 use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
 use itertools::Itertools;
@@ -95,7 +97,7 @@ impl Audio {
         }
 
         while self.sample_sink.slots() < self.sampler.output_frames_max() * 2 {
-            std::hint::spin_loop();
+            std::thread::sleep(Duration::from_micros(500));
         }
     }
 }

src/controller.rs

@@ -1,50 +1,128 @@
 use std::sync::{Arc, RwLock};
 
-use winit::event::{ElementState, KeyEvent};
+use gilrs::{ev::Code, Event as GamepadEvent, EventType, GamepadId};
+use winit::{
+    event::{ElementState, KeyEvent},
+    keyboard::PhysicalKey,
+};
 
-use crate::{input::InputMapper, shrooms_vb_core::VBKey};
+use crate::{
+    emulator::{EmulatorClient, EmulatorCommand, SimId, VBKey},
+    input::{InputMapping, MappingProvider},
+};
 
-pub struct ControllerState {
+pub struct Controller {
-    input_mapper: Arc<RwLock<InputMapper>>,
+    pub sim_id: SimId,
-    pressed: VBKey,
+    state: VBKey,
+    mapping: Arc<RwLock<InputMapping>>,
 }
 
-impl ControllerState {
+impl Controller {
-    pub fn new(input_mapper: Arc<RwLock<InputMapper>>) -> Self {
+    pub fn new(sim_id: SimId, mappings: &MappingProvider) -> Self {
         Self {
-            input_mapper,
+            sim_id,
-            pressed: VBKey::SGN,
+            state: VBKey::SGN,
+            mapping: mappings.for_sim(sim_id).clone(),
         }
     }
 
-    pub fn pressed(&self) -> VBKey {
+    pub fn key_event(&mut self, event: &KeyEvent) -> Option<VBKey> {
-        self.pressed
+        let keys = self.map_keys(&event.physical_key)?;
-    }
-
-    pub fn key_event(&mut self, event: &KeyEvent) -> bool {
-        let Some(input) = self.key_event_to_input(event) else {
-            return false;
-        };
         match event.state {
-            ElementState::Pressed => {
+            ElementState::Pressed => self.update_state(keys, VBKey::empty()),
-                if self.pressed.contains(input) {
+            ElementState::Released => self.update_state(VBKey::empty(), keys),
-                    return false;
-                }
-                self.pressed.insert(input);
-                true
-            }
-            ElementState::Released => {
-                if !self.pressed.contains(input) {
-                    return false;
-                }
-                self.pressed.remove(input);
-                true
-            }
         }
     }
 
-    fn key_event_to_input(&self, event: &KeyEvent) -> Option<VBKey> {
+    pub fn gamepad_event(&mut self, event: &GamepadEvent) -> Option<VBKey> {
-        let mapper = self.input_mapper.read().unwrap();
+        let (pressed, released) = match event.event {
-        mapper.key_event(event)
+            EventType::ButtonPressed(_, code) => {
+                let mappings = self.map_button(&event.id, &code)?;
+                (mappings, VBKey::empty())
+            }
+            EventType::ButtonReleased(_, code) => {
+                let mappings = self.map_button(&event.id, &code)?;
+                (VBKey::empty(), mappings)
+            }
+            EventType::AxisChanged(_, value, code) => {
+                let (neg, pos) = self.map_axis(&event.id, &code)?;
+                let mut pressed = VBKey::empty();
+                let mut released = VBKey::empty();
+                if value < -0.75 {
+                    pressed = pressed.union(neg);
+                }
+                if value > 0.75 {
+                    pressed = pressed.union(pos);
+                }
+                if value > -0.65 {
+                    released = released.union(neg);
+                }
+                if value < 0.65 {
+                    released = released.union(pos);
+                }
+                (pressed, released)
+            }
+            _ => {
+                return None;
+            }
+        };
+        self.update_state(pressed, released)
+    }
+
+    fn update_state(&mut self, pressed: VBKey, released: VBKey) -> Option<VBKey> {
+        let old_state = self.state;
+        self.state = self.state.union(pressed).difference(released);
+        if self.state != old_state {
+            Some(self.state)
+        } else {
+            None
+        }
+    }
+
+    fn map_keys(&self, key: &PhysicalKey) -> Option<VBKey> {
+        self.mapping.read().unwrap().map_keyboard(key)
+    }
+
+    fn map_button(&self, id: &GamepadId, code: &Code) -> Option<VBKey> {
+        self.mapping.read().unwrap().map_button(id, code)
+    }
+
+    fn map_axis(&self, id: &GamepadId, code: &Code) -> Option<(VBKey, VBKey)> {
+        self.mapping.read().unwrap().map_axis(id, code)
+    }
+}
+
+pub struct ControllerManager {
+    client: EmulatorClient,
+    controllers: [Controller; 2],
+}
+
+impl ControllerManager {
+    pub fn new(client: EmulatorClient, mappings: &MappingProvider) -> Self {
+        Self {
+            client,
+            controllers: [
+                Controller::new(SimId::Player1, mappings),
+                Controller::new(SimId::Player2, mappings),
+            ],
+        }
+    }
+
+    pub fn handle_key_event(&mut self, event: &KeyEvent) {
+        for controller in &mut self.controllers {
+            if let Some(pressed) = controller.key_event(event) {
+                self.client
+                    .send_command(EmulatorCommand::SetKeys(controller.sim_id, pressed));
+            }
+        }
+    }
+
+    pub fn handle_gamepad_event(&mut self, event: &GamepadEvent) {
+        for controller in &mut self.controllers {
+            if let Some(pressed) = controller.gamepad_event(event) {
+                self.client
+                    .send_command(EmulatorCommand::SetKeys(controller.sim_id, pressed));
+            }
+        }
     }
 }

src/emulator.rs

@@ -1,8 +1,9 @@
 use std::{
+    collections::HashMap,
     fs,
     path::{Path, PathBuf},
     sync::{
-        atomic::{AtomicBool, Ordering},
+        atomic::{AtomicBool, AtomicUsize, Ordering},
         mpsc::{self, RecvError, TryRecvError},
         Arc,
     },
@@ -10,17 +11,36 @@ use std::{
 
 use anyhow::Result;
 
-use crate::{
+use crate::{audio::Audio, graphics::TextureSink};
-    audio::Audio,
+use shrooms_vb_core::Sim;
-    renderer::GameRenderer,
+pub use shrooms_vb_core::VBKey;
-    shrooms_vb_core::{CoreVB, VBKey},
+
-};
+mod shrooms_vb_core;
 
 pub struct EmulatorBuilder {
     rom: Option<PathBuf>,
     commands: mpsc::Receiver<EmulatorCommand>,
-    running: Arc<AtomicBool>,
+    sim_count: Arc<AtomicUsize>,
-    has_game: Arc<AtomicBool>,
+    running: Arc<[AtomicBool; 2]>,
+    has_game: Arc<[AtomicBool; 2]>,
+    linked: Arc<AtomicBool>,
+}
+
+#[derive(PartialEq, Eq, Hash, Clone, Copy, Debug)]
+pub enum SimId {
+    Player1,
+    Player2,
+}
+impl SimId {
+    pub const fn values() -> [Self; 2] {
+        [Self::Player1, Self::Player2]
+    }
+    pub const fn to_index(self) -> usize {
+        match self {
+            Self::Player1 => 0,
+            Self::Player2 => 1,
+        }
+    }
 }
 
 impl EmulatorBuilder {
@@ -29,13 +49,17 @@ impl EmulatorBuilder {
         let builder = Self {
             rom: None,
             commands,
-            running: Arc::new(AtomicBool::new(false)),
+            sim_count: Arc::new(AtomicUsize::new(0)),
-            has_game: Arc::new(AtomicBool::new(false)),
+            running: Arc::new([AtomicBool::new(false), AtomicBool::new(false)]),
+            has_game: Arc::new([AtomicBool::new(false), AtomicBool::new(false)]),
+            linked: Arc::new(AtomicBool::new(false)),
         };
         let client = EmulatorClient {
             queue,
+            sim_count: builder.sim_count.clone(),
             running: builder.running.clone(),
             has_game: builder.has_game.clone(),
+            linked: builder.linked.clone(),
         };
         (builder, client)
     }
@@ -48,64 +72,148 @@ impl EmulatorBuilder {
     }
 
     pub fn build(self) -> Result<Emulator> {
-        let mut emulator = Emulator::new(self.commands, self.running, self.has_game)?;
+        let mut emulator = Emulator::new(
+            self.commands,
+            self.sim_count,
+            self.running,
+            self.has_game,
+            self.linked,
+        )?;
         if let Some(path) = self.rom {
-            emulator.load_rom(&path)?;
+            emulator.load_rom(SimId::Player1, &path)?;
         }
         Ok(emulator)
     }
 }
 
 pub struct Emulator {
-    sim: CoreVB,
+    sims: Vec<Sim>,
     audio: Audio,
     commands: mpsc::Receiver<EmulatorCommand>,
-    renderer: Option<GameRenderer>,
+    sim_count: Arc<AtomicUsize>,
-    running: Arc<AtomicBool>,
+    running: Arc<[AtomicBool; 2]>,
-    has_game: Arc<AtomicBool>,
+    has_game: Arc<[AtomicBool; 2]>,
+    linked: Arc<AtomicBool>,
+    renderers: HashMap<SimId, TextureSink>,
 }
 
 impl Emulator {
     fn new(
         commands: mpsc::Receiver<EmulatorCommand>,
-        running: Arc<AtomicBool>,
+        sim_count: Arc<AtomicUsize>,
-        has_game: Arc<AtomicBool>,
+        running: Arc<[AtomicBool; 2]>,
+        has_game: Arc<[AtomicBool; 2]>,
+        linked: Arc<AtomicBool>,
     ) -> Result<Self> {
         Ok(Self {
-            sim: CoreVB::new(),
+            sims: vec![],
             audio: Audio::init()?,
             commands,
-            renderer: None,
+            sim_count,
             running,
             has_game,
+            linked,
+            renderers: HashMap::new(),
         })
     }
 
-    pub fn load_rom(&mut self, path: &Path) -> Result<()> {
+    pub fn load_rom(&mut self, sim_id: SimId, path: &Path) -> Result<()> {
         let bytes = fs::read(path)?;
-        self.sim.reset();
+        self.reset_sim(sim_id, Some(bytes))?;
-        self.sim.load_rom(bytes)?;
-        self.has_game.store(true, Ordering::Release);
-        self.running.store(true, Ordering::Release);
         Ok(())
     }
 
+    pub fn start_second_sim(&mut self, rom: Option<PathBuf>) -> Result<()> {
+        let bytes = if let Some(path) = rom {
+            Some(fs::read(path)?)
+        } else {
+            self.sims.first().and_then(|s| s.clone_rom())
+        };
+        self.reset_sim(SimId::Player2, bytes)?;
+        self.link_sims();
+        Ok(())
+    }
+
+    fn reset_sim(&mut self, sim_id: SimId, new_rom: Option<Vec<u8>>) -> Result<()> {
+        let index = sim_id.to_index();
+        while self.sims.len() <= index {
+            self.sims.push(Sim::new());
+        }
+        self.sim_count.store(self.sims.len(), Ordering::Relaxed);
+        let sim = &mut self.sims[index];
+        sim.reset();
+        if let Some(bytes) = new_rom {
+            sim.load_rom(bytes)?;
+            self.has_game[index].store(true, Ordering::Release);
+        }
+        if self.has_game[index].load(Ordering::Acquire) {
+            self.running[index].store(true, Ordering::Release);
+        }
+        Ok(())
+    }
+
+    fn link_sims(&mut self) {
+        let (first, second) = self.sims.split_at_mut(1);
+        let Some(first) = first.first_mut() else {
+            return;
+        };
+        let Some(second) = second.first_mut() else {
+            return;
+        };
+        first.link(second);
+        self.linked.store(true, Ordering::Release);
+    }
+
+    fn unlink_sims(&mut self) {
+        let Some(first) = self.sims.first_mut() else {
+            return;
+        };
+        first.unlink();
+        self.linked.store(false, Ordering::Release);
+    }
+
+    pub fn stop_second_sim(&mut self) {
+        self.renderers.remove(&SimId::Player2);
+        self.sims.truncate(1);
+        self.sim_count.store(self.sims.len(), Ordering::Relaxed);
+        self.running[SimId::Player2.to_index()].store(false, Ordering::Release);
+        self.has_game[SimId::Player2.to_index()].store(false, Ordering::Release);
+        self.linked.store(false, Ordering::Release);
+    }
+
     pub fn run(&mut self) {
         let mut eye_contents = vec![0u8; 384 * 224 * 2];
         let mut audio_samples = vec![];
         loop {
-            let mut idle = true;
+            let p1_running = self.running[SimId::Player1.to_index()].load(Ordering::Acquire);
-            if self.running.load(Ordering::Acquire) {
+            let p2_running = self.running[SimId::Player2.to_index()].load(Ordering::Acquire);
+            let mut idle = p1_running || p2_running;
+            if p1_running && p2_running {
+                Sim::emulate_many(&mut self.sims);
+            } else if p1_running {
+                self.sims[SimId::Player1.to_index()].emulate();
+            } else if p2_running {
+                self.sims[SimId::Player2.to_index()].emulate();
+            }
+
+            for sim_id in SimId::values() {
+                let Some(renderer) = self.renderers.get_mut(&sim_id) else {
+                    continue;
+                };
+                let Some(sim) = self.sims.get_mut(sim_id.to_index()) else {
+                    continue;
+                };
+                if sim.read_pixels(&mut eye_contents) {
                     idle = false;
-                self.sim.emulate_frame();
+                    if renderer.queue_render(&eye_contents).is_err() {
-            }
+                        self.renderers.remove(&sim_id);
-            if let Some(renderer) = &mut self.renderer {
-                if self.sim.read_pixels(&mut eye_contents) {
-                    idle = false;
-                    renderer.render(&eye_contents);
                     }
                 }
-            self.sim.read_samples(&mut audio_samples);
+            }
+            let weight = 1.0 / self.sims.len() as f32;
+            for sim in self.sims.iter_mut() {
+                sim.read_samples(&mut audio_samples, weight);
+            }
             if !audio_samples.is_empty() {
                 idle = false;
                 self.audio.update(&audio_samples);
@@ -137,28 +245,50 @@ impl Emulator {
 
     fn handle_command(&mut self, command: EmulatorCommand) {
         match command {
-            EmulatorCommand::SetRenderer(renderer) => {
+            EmulatorCommand::SetRenderer(sim_id, renderer) => {
-                self.renderer = Some(renderer);
+                self.renderers.insert(sim_id, renderer);
             }
-            EmulatorCommand::LoadGame(path) => {
+            EmulatorCommand::LoadGame(sim_id, path) => {
-                if let Err(error) = self.load_rom(&path) {
+                if let Err(error) = self.load_rom(sim_id, &path) {
                     eprintln!("error loading rom: {}", error);
                 }
             }
+            EmulatorCommand::StartSecondSim(path) => {
+                if let Err(error) = self.start_second_sim(path) {
+                    eprintln!("error starting second sim: {}", error);
+                }
+            }
+            EmulatorCommand::StopSecondSim => {
+                self.stop_second_sim();
+            }
             EmulatorCommand::Pause => {
-                self.running.store(false, Ordering::Release);
+                for sim in SimId::values() {
+                    self.running[sim.to_index()].store(false, Ordering::Release);
+                }
             }
             EmulatorCommand::Resume => {
-                if self.has_game.load(Ordering::Acquire) {
+                for sim_id in SimId::values() {
-                    self.running.store(true, Ordering::Relaxed);
+                    let index = sim_id.to_index();
+                    if self.has_game[index].load(Ordering::Acquire) {
+                        self.running[index].store(true, Ordering::Relaxed);
                     }
                 }
-            EmulatorCommand::Reset => {
-                self.sim.reset();
-                self.running.store(true, Ordering::Release);
             }
-            EmulatorCommand::SetKeys(keys) => {
+            EmulatorCommand::Link => {
-                self.sim.set_keys(keys);
+                self.link_sims();
+            }
+            EmulatorCommand::Unlink => {
+                self.unlink_sims();
+            }
+            EmulatorCommand::Reset(sim_id) => {
+                if let Err(error) = self.reset_sim(sim_id, None) {
+                    eprintln!("error resetting sim: {}", error);
+                }
+            }
+            EmulatorCommand::SetKeys(sim_id, keys) => {
+                if let Some(sim) = self.sims.get_mut(sim_id.to_index()) {
+                    sim.set_keys(keys);
+                }
             }
         }
     }
@@ -166,27 +296,39 @@ impl Emulator {
 
 #[derive(Debug)]
 pub enum EmulatorCommand {
-    SetRenderer(GameRenderer),
+    SetRenderer(SimId, TextureSink),
-    LoadGame(PathBuf),
+    LoadGame(SimId, PathBuf),
+    StartSecondSim(Option<PathBuf>),
+    StopSecondSim,
     Pause,
     Resume,
-    Reset,
+    Link,
-    SetKeys(VBKey),
+    Unlink,
+    Reset(SimId),
+    SetKeys(SimId, VBKey),
 }
 
 #[derive(Clone)]
 pub struct EmulatorClient {
     queue: mpsc::Sender<EmulatorCommand>,
-    running: Arc<AtomicBool>,
+    sim_count: Arc<AtomicUsize>,
-    has_game: Arc<AtomicBool>,
+    running: Arc<[AtomicBool; 2]>,
+    has_game: Arc<[AtomicBool; 2]>,
+    linked: Arc<AtomicBool>,
 }
 
 impl EmulatorClient {
-    pub fn is_running(&self) -> bool {
+    pub fn has_player_2(&self) -> bool {
-        self.running.load(Ordering::Acquire)
+        self.sim_count.load(Ordering::Acquire) == 2
     }
-    pub fn has_game(&self) -> bool {
+    pub fn is_running(&self, sim_id: SimId) -> bool {
-        self.has_game.load(Ordering::Acquire)
+        self.running[sim_id.to_index()].load(Ordering::Acquire)
+    }
+    pub fn has_game(&self, sim_id: SimId) -> bool {
+        self.has_game[sim_id.to_index()].load(Ordering::Acquire)
+    }
+    pub fn are_sims_linked(&self) -> bool {
+        self.linked.load(Ordering::Acquire)
     }
     pub fn send_command(&self, command: EmulatorCommand) {
         if let Err(err) = self.queue.send(command) {

src/emulator/shrooms_vb_core.rs

@@ -25,6 +25,12 @@ enum VBDataType {
     F32 = 5,
 }
 
+#[repr(i32)]
+#[derive(FromPrimitive, ToPrimitive)]
+enum VBOption {
+    PseudoHalt = 0,
+}
+
 bitflags! {
     #[repr(transparent)]
     #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
@@ -54,6 +60,8 @@ type OnFrame = extern "C" fn(sim: *mut VB) -> c_int;
 extern "C" {
     #[link_name = "vbEmulate"]
     fn vb_emulate(sim: *mut VB, cycles: *mut u32) -> c_int;
+    #[link_name = "vbEmulateEx"]
+    fn vb_emulate_ex(sims: *mut *mut VB, count: c_uint, cycles: *mut u32) -> c_int;
     #[link_name = "vbGetCartROM"]
     fn vb_get_cart_rom(sim: *mut VB, size: *mut u32) -> *mut c_void;
     #[link_name = "vbGetPixels"]
@@ -81,10 +89,14 @@ extern "C" {
     fn vb_reset(sim: *mut VB);
     #[link_name = "vbSetCartROM"]
     fn vb_set_cart_rom(sim: *mut VB, rom: *mut c_void, size: u32) -> c_int;
-    #[link_name = "vbSetKeys"]
-    fn vb_set_keys(sim: *mut VB, keys: u16) -> u16;
     #[link_name = "vbSetFrameCallback"]
     fn vb_set_frame_callback(sim: *mut VB, on_frame: OnFrame);
+    #[link_name = "vbSetKeys"]
+    fn vb_set_keys(sim: *mut VB, keys: u16) -> u16;
+    #[link_name = "vbSetOption"]
+    fn vb_set_option(sim: *mut VB, key: VBOption, value: c_int);
+    #[link_name = "vbSetPeer"]
+    fn vb_set_peer(sim: *mut VB, peer: *mut VB);
     #[link_name = "vbSetSamples"]
     fn vb_set_samples(
         sim: *mut VB,
@@ -113,14 +125,15 @@ struct VBState {
     frame_seen: bool,
 }
 
-pub struct CoreVB {
+#[repr(transparent)]
+pub struct Sim {
     sim: *mut VB,
 }
 
 // SAFETY: the memory pointed to by sim is valid
-unsafe impl Send for CoreVB {}
+unsafe impl Send for Sim {}
 
-impl CoreVB {
+impl Sim {
     pub fn new() -> Self {
         // init the VB instance itself
         let size = unsafe { vb_size_of() };
@@ -128,6 +141,7 @@ impl CoreVB {
         let memory = vec![0u64; size.div_ceil(4)];
         let sim: *mut VB = Box::into_raw(memory.into_boxed_slice()).cast();
         unsafe { vb_init(sim) };
+        unsafe { vb_set_option(sim, VBOption::PseudoHalt, 1) };
         unsafe { vb_reset(sim) };
 
         // set up userdata
@@ -140,7 +154,7 @@ impl CoreVB {
         let samples: *mut c_void = Box::into_raw(audio_buffer.into_boxed_slice()).cast();
         unsafe { vb_set_samples(sim, samples, VBDataType::F32, AUDIO_CAPACITY_SAMPLES as u32) };
 
-        CoreVB { sim }
+        Sim { sim }
     }
 
     pub fn reset(&mut self) {
@@ -162,6 +176,17 @@ impl CoreVB {
         }
     }
 
+    pub fn clone_rom(&self) -> Option<Vec<u8>> {
+        let mut size = 0;
+        let rom = unsafe { vb_get_cart_rom(self.sim, &mut size) };
+        if rom.is_null() {
+            return None;
+        }
+        // SAFETY: rom definitely points to a valid array of `size` bytes
+        let slice: &[u8] = unsafe { slice::from_raw_parts(rom.cast(), size as usize) };
+        Some(slice.to_vec())
+    }
+
     fn unload_rom(&mut self) -> Option<Vec<u8>> {
         let mut size = 0;
         let rom = unsafe { vb_get_cart_rom(self.sim, &mut size) };
@@ -173,11 +198,26 @@ impl CoreVB {
         Some(vec)
     }
 
-    pub fn emulate_frame(&mut self) {
+    pub fn link(&mut self, peer: &mut Sim) {
+        unsafe { vb_set_peer(self.sim, peer.sim) };
+    }
+
+    pub fn unlink(&mut self) {
+        unsafe { vb_set_peer(self.sim, ptr::null_mut()) };
+    }
+
+    pub fn emulate(&mut self) {
         let mut cycles = 20_000_000;
         unsafe { vb_emulate(self.sim, &mut cycles) };
     }
 
+    pub fn emulate_many(sims: &mut [Sim]) {
+        let mut cycles = 20_000_000;
+        let count = sims.len() as c_uint;
+        let sims = sims.as_mut_ptr().cast();
+        unsafe { vb_emulate_ex(sims, count, &mut cycles) };
+    }
+
     pub fn read_pixels(&mut self, buffers: &mut [u8]) -> bool {
         // SAFETY: the *mut VB owns its userdata.
         // There is no way for the userdata to be null or otherwise invalid.
@@ -203,14 +243,17 @@ impl CoreVB {
         true
     }
 
-    pub fn read_samples(&mut self, samples: &mut Vec<f32>) {
+    pub fn read_samples(&mut self, samples: &mut Vec<f32>, weight: f32) {
         let mut position = 0;
         let ptr =
             unsafe { vb_get_samples(self.sim, ptr::null_mut(), ptr::null_mut(), &mut position) };
         // SAFETY: position is an offset in a buffer of (f32, f32). so, position * 2 is an offset in a buffer of f32.
-        let read_samples: &mut [f32] =
+        let read_samples: &[f32] =
-            unsafe { slice::from_raw_parts_mut(ptr.cast(), position as usize * 2) };
+            unsafe { slice::from_raw_parts(ptr.cast(), position as usize * 2) };
-        samples.extend_from_slice(read_samples);
+        samples.resize(read_samples.len(), 0.0);
+        for (index, sample) in read_samples.iter().enumerate() {
+            samples[index] += sample * weight;
+        }
 
         unsafe {
             vb_set_samples(
@@ -227,7 +270,7 @@ impl CoreVB {
     }
 }
 
-impl Drop for CoreVB {
+impl Drop for Sim {
     fn drop(&mut self) {
         let ptr =
             unsafe { vb_get_samples(self.sim, ptr::null_mut(), ptr::null_mut(), ptr::null_mut()) };
@@ -243,6 +286,9 @@ impl Drop for CoreVB {
         // SAFETY: we made this pointer ourselves, we can for sure free it
         unsafe { drop(Box::from_raw(ptr)) };
 
+        // If we're linked to another sim, unlink from them.
+        unsafe { vb_set_peer(self.sim, ptr::null_mut()) };
+
         let len = unsafe { vb_size_of() }.div_ceil(4);
         // SAFETY: the sim's memory originally came from a Vec<u64>
         let bytes: Vec<u64> = unsafe { Vec::from_raw_parts(self.sim.cast(), len, len) };

src/graphics.rs

@@ -0,0 +1,143 @@
+use std::{
+    sync::{
+        atomic::{AtomicU64, Ordering},
+        mpsc, Arc, Mutex, MutexGuard,
+    },
+    thread,
+};
+
+use anyhow::{bail, Result};
+use itertools::Itertools as _;
+use wgpu::{
+    Device, Extent3d, ImageCopyTexture, ImageDataLayout, Origin3d, Queue, Texture,
+    TextureDescriptor, TextureFormat, TextureUsages, TextureView, TextureViewDescriptor,
+};
+
+#[derive(Debug)]
+pub struct TextureSink {
+    buffers: Arc<BufferPool>,
+    sink: mpsc::Sender<u64>,
+}
+
+impl TextureSink {
+    pub fn new(device: &Device, queue: Arc<Queue>) -> (Self, TextureView) {
+        let texture = Self::create_texture(device);
+        let view = texture.create_view(&TextureViewDescriptor::default());
+        let buffers = Arc::new(BufferPool::new());
+        let (sink, source) = mpsc::channel();
+        let bufs = buffers.clone();
+        thread::spawn(move || {
+            let mut local_buf = vec![0; 384 * 224 * 2];
+            while let Ok(id) = source.recv() {
+                {
+                    let Some(bytes) = bufs.read(id) else {
+                        continue;
+                    };
+                    local_buf.copy_from_slice(bytes.as_slice());
+                }
+                Self::write_texture(&queue, &texture, local_buf.as_slice());
+            }
+        });
+        let sink = Self { buffers, sink };
+        (sink, view)
+    }
+
+    pub fn queue_render(&mut self, bytes: &[u8]) -> Result<()> {
+        let id = {
+            let (mut buf, id) = self.buffers.write()?;
+            buf.copy_from_slice(bytes);
+            id
+        };
+        self.sink.send(id)?;
+        Ok(())
+    }
+
+    fn create_texture(device: &Device) -> Texture {
+        let desc = TextureDescriptor {
+            label: Some("eyes"),
+            size: Extent3d {
+                width: 384,
+                height: 224,
+                depth_or_array_layers: 1,
+            },
+            mip_level_count: 1,
+            sample_count: 1,
+            dimension: wgpu::TextureDimension::D2,
+            format: TextureFormat::Rg8Unorm,
+            usage: TextureUsages::COPY_SRC
+                | TextureUsages::COPY_DST
+                | TextureUsages::TEXTURE_BINDING,
+            view_formats: &[TextureFormat::Rg8Unorm],
+        };
+        device.create_texture(&desc)
+    }
+
+    fn write_texture(queue: &Queue, texture: &Texture, bytes: &[u8]) {
+        let texture = ImageCopyTexture {
+            texture,
+            mip_level: 0,
+            origin: Origin3d::ZERO,
+            aspect: wgpu::TextureAspect::All,
+        };
+        let size = Extent3d {
+            width: 384,
+            height: 224,
+            depth_or_array_layers: 1,
+        };
+        let data_layout = ImageDataLayout {
+            offset: 0,
+            bytes_per_row: Some(384 * 2),
+            rows_per_image: Some(224),
+        };
+        queue.write_texture(texture, bytes, data_layout, size);
+    }
+}
+
+#[derive(Debug)]
+struct BufferPool {
+    buffers: [Buffer; 3],
+}
+impl BufferPool {
+    fn new() -> Self {
+        Self {
+            buffers: std::array::from_fn(|i| Buffer::new(i as u64)),
+        }
+    }
+
+    fn read(&self, id: u64) -> Option<MutexGuard<'_, Vec<u8>>> {
+        let buf = self
+            .buffers
+            .iter()
+            .find(|buf| buf.id.load(Ordering::Acquire) == id)?;
+        buf.data.lock().ok()
+    }
+
+    fn write(&self) -> Result<(MutexGuard<'_, Vec<u8>>, u64)> {
+        let (min, max) = self
+            .buffers
+            .iter()
+            .minmax_by_key(|buf| buf.id.load(Ordering::Acquire))
+            .into_option()
+            .unwrap();
+        let Ok(lock) = min.data.lock() else {
+            bail!("lock was poisoned")
+        };
+        let id = max.id.load(Ordering::Acquire) + 1;
+        min.id.store(id, Ordering::Release);
+        Ok((lock, id))
+    }
+}
+
+#[derive(Debug)]
+struct Buffer {
+    data: Mutex<Vec<u8>>,
+    id: AtomicU64,
+}
+impl Buffer {
+    fn new(id: u64) -> Self {
+        Self {
+            data: Mutex::new(vec![0; 384 * 224 * 2]),
+            id: AtomicU64::new(id),
+        }
+    }
+}

src/input.rs

@@ -1,71 +1,167 @@
-use std::collections::HashMap;
+use std::{
-
+    collections::{hash_map::Entry, HashMap},
-use winit::{
+    sync::{Arc, RwLock},
-    event::KeyEvent,
-    keyboard::{Key, NamedKey},
-    platform::modifier_supplement::KeyEventExtModifierSupplement,
 };
 
-use crate::shrooms_vb_core::VBKey;
+use gilrs::{ev::Code, Axis, Button, Gamepad, GamepadId};
+use winit::keyboard::{KeyCode, PhysicalKey};
 
-pub struct InputMapper {
+use crate::emulator::{SimId, VBKey};
-    vb_bindings: HashMap<VBKey, Key>,
+
-    key_bindings: HashMap<Key, VBKey>,
+#[derive(Clone, Copy, PartialEq, Eq, Hash)]
+struct DeviceId(u16, u16);
+
+pub struct GamepadMapping {
+    buttons: HashMap<Code, VBKey>,
+    axes: HashMap<Code, (VBKey, VBKey)>,
 }
 
-impl InputMapper {
+impl GamepadMapping {
-    pub fn new() -> Self {
+    fn for_gamepad(gamepad: &Gamepad) -> Self {
-        let mut mapper = Self {
+        let mut buttons = HashMap::new();
-            vb_bindings: HashMap::new(),
+        let mut default_button = |btn: Button, key: VBKey| {
-            key_bindings: HashMap::new(),
+            if let Some(code) = gamepad.button_code(btn) {
+                buttons.insert(code, key);
+            }
         };
-        mapper.bind_key(VBKey::SEL, Key::Character("a".into()));
+        default_button(Button::South, VBKey::A);
-        mapper.bind_key(VBKey::STA, Key::Character("s".into()));
+        default_button(Button::West, VBKey::B);
-        mapper.bind_key(VBKey::B, Key::Character("d".into()));
+        default_button(Button::RightTrigger, VBKey::RT);
-        mapper.bind_key(VBKey::A, Key::Character("f".into()));
+        default_button(Button::LeftTrigger, VBKey::LT);
-        mapper.bind_key(VBKey::LT, Key::Character("e".into()));
+        default_button(Button::Start, VBKey::STA);
-        mapper.bind_key(VBKey::RT, Key::Character("r".into()));
+        default_button(Button::Select, VBKey::SEL);
-        mapper.bind_key(VBKey::RU, Key::Character("i".into()));
+
-        mapper.bind_key(VBKey::RL, Key::Character("j".into()));
+        let mut axes = HashMap::new();
-        mapper.bind_key(VBKey::RD, Key::Character("k".into()));
+        let mut default_axis = |axis: Axis, neg: VBKey, pos: VBKey| {
-        mapper.bind_key(VBKey::RR, Key::Character("l".into()));
+            if let Some(code) = gamepad.axis_code(axis) {
-        mapper.bind_key(VBKey::LU, Key::Named(NamedKey::ArrowUp));
+                axes.insert(code, (neg, pos));
-        mapper.bind_key(VBKey::LL, Key::Named(NamedKey::ArrowLeft));
+            }
-        mapper.bind_key(VBKey::LD, Key::Named(NamedKey::ArrowDown));
+        };
-        mapper.bind_key(VBKey::LR, Key::Named(NamedKey::ArrowRight));
+        default_axis(Axis::LeftStickX, VBKey::LL, VBKey::LR);
-        mapper
+        default_axis(Axis::LeftStickY, VBKey::LD, VBKey::LU);
+        default_axis(Axis::RightStickX, VBKey::RL, VBKey::RR);
+        default_axis(Axis::RightStickY, VBKey::RD, VBKey::RU);
+        default_axis(Axis::DPadX, VBKey::LL, VBKey::LR);
+        default_axis(Axis::DPadY, VBKey::LD, VBKey::LU);
+
+        Self { buttons, axes }
+    }
+}
+
+#[derive(Default)]
+pub struct InputMapping {
+    keys: HashMap<PhysicalKey, VBKey>,
+    gamepads: HashMap<GamepadId, Arc<RwLock<GamepadMapping>>>,
+}
+
+impl InputMapping {
+    pub fn map_keyboard(&self, key: &PhysicalKey) -> Option<VBKey> {
+        self.keys.get(key).copied()
     }
 
-    pub fn binding_names(&self) -> HashMap<VBKey, String> {
+    pub fn map_button(&self, id: &GamepadId, code: &Code) -> Option<VBKey> {
-        self.vb_bindings
+        let mappings = self.gamepads.get(id)?.read().unwrap();
-            .iter()
+        mappings.buttons.get(code).copied()
-            .map(|(k, v)| {
+    }
-                let name = match v {
+
-                    Key::Character(char) => char.to_string(),
+    pub fn map_axis(&self, id: &GamepadId, code: &Code) -> Option<(VBKey, VBKey)> {
-                    Key::Named(key) => format!("{:?}", key),
+        let mappings = self.gamepads.get(id)?.read().unwrap();
+        mappings.axes.get(code).copied()
+    }
+
+    pub fn add_keyboard_mapping(&mut self, key: VBKey, keyboard_key: PhysicalKey) {
+        let entry = self.keys.entry(keyboard_key).or_insert(VBKey::empty());
+        *entry = entry.union(key);
+    }
+
+    pub fn clear_keyboard_mappings(&mut self, key: VBKey) {
+        self.keys.retain(|_, keys| {
+            *keys = keys.difference(key);
+            *keys != VBKey::empty()
+        });
+    }
+
+    pub fn keyboard_mapping_names(&self) -> HashMap<VBKey, String> {
+        let mut results: HashMap<VBKey, Vec<String>> = HashMap::new();
+        for (keyboard_key, keys) in &self.keys {
+            let name = match keyboard_key {
+                PhysicalKey::Code(code) => format!("{code:?}"),
                 k => format!("{:?}", k),
             };
-                (*k, name)
+            for key in keys.iter() {
+                results.entry(key).or_default().push(name.clone());
+            }
+        }
+        results
+            .into_iter()
+            .map(|(k, mut v)| {
+                v.sort();
+                (k, v.join(", "))
             })
             .collect()
     }
+}
 
-    pub fn bind_key(&mut self, vb: VBKey, key: Key) {
+#[derive(Clone)]
-        if let Some(old) = self.vb_bindings.insert(vb, key.clone()) {
+pub struct MappingProvider {
-            self.key_bindings.remove(&old);
+    device_mappings: Arc<RwLock<HashMap<DeviceId, Arc<RwLock<GamepadMapping>>>>>,
-        }
+    sim_mappings: HashMap<SimId, Arc<RwLock<InputMapping>>>,
-        self.key_bindings.insert(key, vb);
+}
-    }
 
-    pub fn clear_binding(&mut self, vb: VBKey) {
+impl MappingProvider {
-        if let Some(old) = self.vb_bindings.remove(&vb) {
+    pub fn new() -> Self {
-            self.key_bindings.remove(&old);
+        let mut mappings = HashMap::new();
+
+        let mut p1_mappings = InputMapping::default();
+        let p2_mappings = InputMapping::default();
+        let mut default_key = |code, key| {
+            p1_mappings.add_keyboard_mapping(key, PhysicalKey::Code(code));
+        };
+        default_key(KeyCode::KeyA, VBKey::SEL);
+        default_key(KeyCode::KeyS, VBKey::STA);
+        default_key(KeyCode::KeyD, VBKey::B);
+        default_key(KeyCode::KeyF, VBKey::A);
+        default_key(KeyCode::KeyE, VBKey::LT);
+        default_key(KeyCode::KeyR, VBKey::RT);
+        default_key(KeyCode::KeyI, VBKey::RU);
+        default_key(KeyCode::KeyJ, VBKey::RL);
+        default_key(KeyCode::KeyK, VBKey::RD);
+        default_key(KeyCode::KeyL, VBKey::RR);
+        default_key(KeyCode::ArrowUp, VBKey::LU);
+        default_key(KeyCode::ArrowLeft, VBKey::LL);
+        default_key(KeyCode::ArrowDown, VBKey::LD);
+        default_key(KeyCode::ArrowRight, VBKey::LR);
+
+        mappings.insert(SimId::Player1, Arc::new(RwLock::new(p1_mappings)));
+        mappings.insert(SimId::Player2, Arc::new(RwLock::new(p2_mappings)));
+        Self {
+            device_mappings: Arc::new(RwLock::new(HashMap::new())),
+            sim_mappings: mappings,
         }
     }
 
-    pub fn key_event(&self, event: &KeyEvent) -> Option<VBKey> {
+    pub fn for_sim(&self, sim_id: SimId) -> &Arc<RwLock<InputMapping>> {
-        self.key_bindings
+        self.sim_mappings.get(&sim_id).unwrap()
-            .get(&event.key_without_modifiers())
+    }
-            .cloned()
+
+    pub fn map_gamepad(&self, sim_id: SimId, gamepad: &Gamepad) {
+        let device_id = DeviceId(
+            gamepad.vendor_id().unwrap_or_default(),
+            gamepad.product_id().unwrap_or_default(),
+        );
+        let mut lock = self.device_mappings.write().unwrap();
+        let gamepad_mapping = match lock.entry(device_id) {
+            Entry::Occupied(entry) => entry.get().clone(),
+            Entry::Vacant(entry) => {
+                let mappings = GamepadMapping::for_gamepad(gamepad);
+                entry.insert(Arc::new(RwLock::new(mappings))).clone()
+            }
+        };
+        drop(lock);
+        self.for_sim(sim_id)
+            .write()
+            .unwrap()
+            .gamepads
+            .insert(gamepad.id(), gamepad_mapping);
     }
 }

src/main.rs

@@ -11,16 +11,27 @@ mod app;
 mod audio;
 mod controller;
 mod emulator;
+mod graphics;
 mod input;
-mod renderer;
-mod shrooms_vb_core;
 
 #[derive(Parser)]
 struct Args {
     rom: Option<PathBuf>,
 }
 
+#[cfg(windows)]
+fn set_process_priority_to_high() -> Result<()> {
+    use windows::Win32::{Foundation, System::Threading};
+    let process = unsafe { Threading::GetCurrentProcess() };
+    unsafe { Threading::SetPriorityClass(process, Threading::HIGH_PRIORITY_CLASS)? };
+    unsafe { Foundation::CloseHandle(process)? };
+    Ok(())
+}
+
 fn main() -> Result<()> {
+    #[cfg(windows)]
+    set_process_priority_to_high()?;
+
     let args = Args::parse();
 
     let (mut builder, client) = EmulatorBuilder::new();

src/renderer.rs

@@ -1,53 +0,0 @@
-use std::sync::Arc;
-
-use wgpu::{
-    Extent3d, ImageCopyTexture, ImageDataLayout, Origin3d, Queue, Texture, TextureDescriptor,
-    TextureFormat, TextureUsages,
-};
-
-#[derive(Debug)]
-pub struct GameRenderer {
-    pub queue: Arc<Queue>,
-    pub eyes: Arc<Texture>,
-}
-
-impl GameRenderer {
-    pub fn render(&self, buffer: &[u8]) {
-        let texture = ImageCopyTexture {
-            texture: &self.eyes,
-            mip_level: 0,
-            origin: Origin3d::ZERO,
-            aspect: wgpu::TextureAspect::All,
-        };
-        let size = Extent3d {
-            width: 384,
-            height: 224,
-            depth_or_array_layers: 1,
-        };
-        let data_layout = ImageDataLayout {
-            offset: 0,
-            bytes_per_row: Some(384 * 2),
-            rows_per_image: Some(224),
-        };
-        self.queue.write_texture(texture, buffer, data_layout, size);
-    }
-    pub fn create_texture(device: &wgpu::Device, name: &str) -> Texture {
-        let desc = TextureDescriptor {
-            label: Some(name),
-            size: Extent3d {
-                width: 384,
-                height: 224,
-                depth_or_array_layers: 1,
-            },
-            mip_level_count: 1,
-            sample_count: 1,
-            dimension: wgpu::TextureDimension::D2,
-            format: TextureFormat::Rg8Unorm,
-            usage: TextureUsages::COPY_SRC
-                | TextureUsages::COPY_DST
-                | TextureUsages::TEXTURE_BINDING,
-            view_formats: &[TextureFormat::Rg8Unorm],
-        };
-        device.create_texture(&desc)
-    }
-}