clamp snd samples into valid -1.0..1.0 range

Cargo.lock

@@ -159,6 +159,12 @@ dependencies = [
  "rustc-demangle",
 ]
 
+[[package]]
+name = "base-x"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cbbc9d0964165b47557570cce6c952866c2678457aca742aafc9fb771d30270"
+
 [[package]]
 name = "base64"
 version = "0.13.0"
@@ -559,27 +565,27 @@ dependencies = [
 
 [[package]]
 name = "cpal"
-version = "0.13.5"
+version = "0.14.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74117836a5124f3629e4b474eed03e479abaf98988b4bb317e29f08cfe0e4116"
+checksum = "e73413ddcb69c398125f5529714492e070c64c6a090ad5b01d8c082b320a0809"
 dependencies = [
  "alsa",
  "core-foundation-sys 0.8.3",
  "coreaudio-rs",
  "jni",
  "js-sys",
- "lazy_static",
  "libc",
  "mach",
- "ndk 0.6.0",
+ "ndk 0.7.0",
- "ndk-glue 0.6.1",
+ "ndk-context",
- "nix 0.23.1",
+ "nix 0.25.0",
  "oboe",
- "parking_lot",
+ "once_cell",
+ "parking_lot 0.12.1",
  "stdweb",
  "thiserror",
  "web-sys",
- "winapi 0.3.9",
+ "windows",
 ]
 
 [[package]]
@@ -863,6 +869,12 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "discard"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
+
 [[package]]
 name = "dispatch"
 version = "0.2.0"
@@ -1588,9 +1600,9 @@ checksum = "884e2677b40cc8c339eaefcb701c32ef1fd2493d71118dc0ca4b6a736c93bd67"
 
 [[package]]
 name = "libc"
-version = "0.2.126"
+version = "0.2.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+checksum = "fc7fcc620a3bff7cdd7a365be3376c97191aeaccc2a603e600951e452615bf89"
 
 [[package]]
 name = "libloading"
@@ -1885,6 +1897,20 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "ndk"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "451422b7e4718271c8b5b3aadf5adedba43dc76312454b387e98fae0fc951aa0"
+dependencies = [
+ "bitflags",
+ "jni-sys",
+ "ndk-sys 0.4.0",
+ "num_enum",
+ "raw-window-handle 0.5.0",
+ "thiserror",
+]
+
 [[package]]
 name = "ndk-context"
 version = "0.1.0"
@@ -1949,6 +1975,15 @@ dependencies = [
  "jni-sys",
 ]
 
+[[package]]
+name = "ndk-sys"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21d83ec9c63ec5bf950200a8e508bdad6659972187b625469f58ef8c08e29046"
+dependencies = [
+ "jni-sys",
+]
+
 [[package]]
 name = "net2"
 version = "0.2.37"
@@ -1986,6 +2021,20 @@ dependencies = [
  "memoffset",
 ]
 
+[[package]]
+name = "nix"
+version = "0.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e322c04a9e3440c327fca7b6c8a63e6890a32fa2ad689db972425f07e0d22abb"
+dependencies = [
+ "autocfg",
+ "bitflags",
+ "cfg-if 1.0.0",
+ "libc",
+ "memoffset",
+ "pin-utils",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.1"
@@ -2158,9 +2207,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.9.0"
+version = "1.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da32515d9f6e6e489d7bc9d84c71b060db7247dc035bbe44eac88cf87486d8d5"
+checksum = "86f0b0d4bf799edbc74508c1e8bf170ff5f41238e5f8225603ca7caaae2b7860"
 
 [[package]]
 name = "opaque-debug"
@@ -2191,7 +2240,17 @@ checksum = "7d17b78036a60663b797adeaee46f5c9dfebb86948d1255007a1d6be0271ff99"
 dependencies = [
  "instant",
  "lock_api",
- "parking_lot_core",
+ "parking_lot_core 0.8.5",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
+dependencies = [
+ "lock_api",
+ "parking_lot_core 0.9.4",
 ]
 
 [[package]]
@@ -2208,6 +2267,19 @@ dependencies = [
  "winapi 0.3.9",
 ]
 
+[[package]]
+name = "parking_lot_core"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4dc9e0dc2adc1c69d09143aff38d3d30c5c3f0df0dad82e6d25547af174ebec0"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "redox_syscall",
+ "smallvec",
+ "windows-sys",
+]
+
 [[package]]
 name = "paste"
 version = "1.0.6"
@@ -2423,6 +2495,15 @@ dependencies = [
  "cty",
 ]
 
+[[package]]
+name = "raw-window-handle"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed7e3d950b66e19e0c372f3fa3fbbcf85b1746b571f74e0c2af6042a5c93420a"
+dependencies = [
+ "cty",
+]
+
 [[package]]
 name = "rayon"
 version = "1.5.1"
@@ -2556,6 +2637,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustfft"
 version = "6.0.1"
@@ -2654,6 +2744,21 @@ dependencies = [
  "version-compare",
 ]
 
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+dependencies = [
+ "semver-parser",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+
 [[package]]
 name = "serde"
 version = "1.0.138"
@@ -2721,6 +2826,21 @@ dependencies = [
  "digest 0.10.3",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c1da05c97445caa12d05e848c4a4fcbbea29e748ac28f7e80e9b010392063770"
+dependencies = [
+ "sha1_smol",
+]
+
+[[package]]
+name = "sha1_smol"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae1a47186c03a32177042e55dbc5fd5aee900b8e0069a8d70fba96a9375cd012"
+
 [[package]]
 name = "sha2"
 version = "0.9.9"
@@ -2814,9 +2934,52 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
 
 [[package]]
 name = "stdweb"
-version = "0.1.3"
+version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef5430c8e36b713e13b48a9f709cc21e046723fe44ce34587b73a830203b533e"
+checksum = "d022496b16281348b52d0e30ae99e01a73d737b2f45d38fed4edf79f9325a1d5"
+dependencies = [
+ "discard",
+ "rustc_version",
+ "stdweb-derive",
+ "stdweb-internal-macros",
+ "stdweb-internal-runtime",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "stdweb-derive"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_derive",
+ "syn",
+]
+
+[[package]]
+name = "stdweb-internal-macros"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
+dependencies = [
+ "base-x",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "sha1",
+ "syn",
+]
+
+[[package]]
+name = "stdweb-internal-runtime"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
 
 [[package]]
 name = "strength_reduce"
@@ -3171,6 +3334,8 @@ dependencies = [
  "anyhow",
  "cpal",
  "curlywas",
+ "env_logger 0.9.0",
+ "log",
  "notify",
  "pico-args",
  "rubato",
@@ -3207,6 +3372,7 @@ dependencies = [
  "env_logger 0.9.0",
  "log",
  "minifb",
+ "pico-args",
  "pollster",
  "wgpu",
  "winapi 0.3.9",
@@ -3740,7 +3906,7 @@ dependencies = [
  "js-sys",
  "log",
  "naga",
- "parking_lot",
+ "parking_lot 0.11.2",
  "raw-window-handle 0.4.2",
  "smallvec",
  "wasm-bindgen",
@@ -3766,7 +3932,7 @@ dependencies = [
  "fxhash",
  "log",
  "naga",
- "parking_lot",
+ "parking_lot 0.11.2",
  "profiling",
  "raw-window-handle 0.4.2",
  "smallvec",
@@ -3803,7 +3969,7 @@ dependencies = [
  "metal",
  "naga",
  "objc",
- "parking_lot",
+ "parking_lot 0.11.2",
  "profiling",
  "range-alloc",
  "raw-window-handle 0.4.2",
@@ -3873,6 +4039,106 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57b543186b344cc61c85b5aab0d2e3adf4e0f99bc076eff9aa5927bcc0b8a647"
+dependencies = [
+ "windows_aarch64_msvc 0.37.0",
+ "windows_i686_gnu 0.37.0",
+ "windows_i686_msvc 0.37.0",
+ "windows_x86_64_gnu 0.37.0",
+ "windows_x86_64_msvc 0.37.0",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc 0.42.0",
+ "windows_i686_gnu 0.42.0",
+ "windows_i686_msvc 0.42.0",
+ "windows_x86_64_gnu 0.42.0",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc 0.42.0",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2623277cb2d1c216ba3b578c0f3cf9cdebeddb6e66b1b218bb33596ea7769c3a"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3925fd0b0b804730d44d4b6278c50f9699703ec49bcd628020f46f4ba07d9e1"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce907ac74fe331b524c1298683efbf598bb031bc84d5e274db2083696d07c57c"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2babfba0828f2e6b32457d5341427dcbb577ceef556273229959ac23a10af33d"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.37.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4dd6dc7df2d84cf7b33822ed5b86318fb1781948e9663bacd047fc9dd52259d"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
+
 [[package]]
 name = "winit"
 version = "0.26.1"
@@ -3894,7 +4160,7 @@ dependencies = [
  "ndk-glue 0.5.1",
  "ndk-sys 0.2.2",
  "objc",
- "parking_lot",
+ "parking_lot 0.11.2",
  "percent-encoding",
  "raw-window-handle 0.4.2",
  "smithay-client-toolkit",

Cargo.toml

@@ -13,6 +13,8 @@ browser = ["warp", "tokio", "tokio-stream", "webbrowser"]
 [dependencies]
 wasmtime = { version = "0.37.0", optional = true }
 anyhow = "1"
+env_logger = "0.9"
+log = "0.4"
 uw8-window = { path = "uw8-window", optional = true }
 notify = "4"
 pico-args = "0.4"
@@ -25,5 +27,5 @@ tokio = { version = "1.17.0", features = ["sync", "rt"], optional = true }
 tokio-stream = { version = "0.1.8", features = ["sync"], optional = true }
 webbrowser = { version = "0.6.0", optional = true }
 ansi_term = "0.12.1"
-cpal = { version = "0.13.5", optional = true }
+cpal = { version = "0.14.1", optional = true }
 rubato = { version = "0.11.0", optional = true }

README.md

@@ -43,6 +43,27 @@ Options:
 -l LEVEL, --level LEVEL : Compression level (0-9). Higher compression levels are really slow.
 -o FILE, --output FILE  : Write the loaded and optionally packed cart back to disk.
 
+when using the native runtime:
+
+-m, --no-audio          : Disable audio, also reduces cpu load a bit
+--no-gpu                : Force old cpu-only window code
+--filter FILTER         : Select an upscale filter at startup
+--fullscreen            : Start in fullscreen mode
+
+Note that the cpu-only window does not support fullscreen nor upscale filters.
+
+Unless --no-gpu is given, uw8 will first try to open a gpu accelerated window, falling back to the old cpu-only window if that fails.
+Therefore you should rarely need to manually pass --no-gpu. If you prefer the old pixel doubling look to the now default crt filter,
+you can just pass "--filter nearest" or "--filter 1".
+
+The upscale filter options are:
+1, nearest              : Anti-aliased nearest filter
+2, fast_crt             : Very simple, cheap crt filter, not very good below a window size of 960x720
+3, ss_crt               : Super sampled crt filter, a little more demanding on the GPU but scales well to smaller window sizes
+4, chromatic_crt        : Variant of fast_crt with a slight offset of the three color dots of a pixel, still pretty cheap
+5, auto_crt (default)   : ss_crt below 960x720, chromatic_crt otherwise
+
+You can switch the upscale filter at any time using the keys 1-5. You can toggle fullscreen with F.
 
 uw8 pack [<options>] <infile> <outfile>
 

examples/include/microw8-api.cwa

@@ -34,6 +34,7 @@ import "env.rectangle_outline" fn rectangle_outline(f32, f32, f32, f32, i32);
 import "env.circle_outline" fn circle_outline(f32, f32, f32, i32);
 import "env.exp" fn exp(f32) -> f32;
 import "env.playNote" fn playNote(i32, i32);
+import "env.sndGes" fn sndGes(i32) -> f32;
 
 const TIME_MS = 0x40;
 const GAMEPAD = 0x44;

examples/include/microw8-api.wat

@@ -34,6 +34,7 @@
 (import "env" "circle_outline" (func $circle_outline (param f32) (param f32) (param f32) (param i32)))
 (import "env" "exp" (func $exp (param f32) (result f32)))
 (import "env" "playNote" (func $playNote (param i32) (param i32)))
+(import "env" "sndGes" (func $sndGes (param i32) (result f32)))
 
 ;; to use defines, include this file with a preprocessor
 ;; like gpp (https://logological.org/gpp).

platform/Cargo.lock

@@ -391,7 +391,7 @@ checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
 [[package]]
 name = "upkr"
 version = "0.1.0"
-source = "git+https://github.com/exoticorn/upkr.git?rev=2e7983fc#2e7983fc650788d98da2eecef2d16f63e849e4a0"
+source = "git+https://github.com/exoticorn/upkr.git?rev=d93aec186c9fb91d962c488682a2db125c61306c#d93aec186c9fb91d962c488682a2db125c61306c"
 dependencies = [
  "anyhow",
  "cdivsufsort",

platform/src/ges.cwa

@@ -10,7 +10,7 @@ const GesState.Size = GesState.Filter + 8*4;
 const GesStateOffset = 32;
 const GesBufferOffset = 32 + GesState.Size;
 
-export fn gesSnd(t: i32) -> f32 {
+export fn sndGes(t: i32) -> f32 {
     let baseAddr = 0!0x12c78;
     if !(t & 127) {
         let i: i32;
@@ -62,7 +62,6 @@ export fn gesSnd(t: i32) -> f32 {
             let phase = channelState!GesChannelState.Phase;
 
             let inline pulseWidth = channelReg?1;
-            let phaseShift = (pulseWidth - 128) * 255;
             let invPhaseInc = 1 as f32 / phaseInc as f32;
 
             i = 0;
@@ -131,7 +130,7 @@ export fn gesSnd(t: i32) -> f32 {
                 let phaseInc = (freq * (65536.0 / 44100.0)) as i32;
 
                 let phase = channelState!GesChannelState.Phase;
-                if modSrc > ch {
+                if modSrc < ch {
                     phase = phase - (phaseInc << 6);
                 }
 

platform/src/platform.cwa

@@ -372,16 +372,7 @@ export fn printChar(char: i32) {
 global mut controlCodeLength = 0;
 
 fn printSingleChar(char: i32) {
-    if char >= 4 & char <= 6 {
+    if outputChannel >= 2 & (char < 4 | char > 6) {
-        outputChannel = char - 4;
-        if !outputChannel {
-            textCursorX = 0;
-            textCursorY = 0;
-        }
-        return;
-    }
-
-    if outputChannel >= 2 {
         logChar(char);
         return;
     }
@@ -399,6 +390,15 @@ fn printSingleChar(char: i32) {
         return;
     }
 
+    if char >= 4 & char <= 6 {
+        outputChannel = char - 4;
+        if !outputChannel {
+            textCursorX = 0;
+            textCursorY = 0;
+        }
+        return;
+    }
+
     if char == 7 {
         80?0 = 80?0 ^ 2;
         return;

site/content/_index.md

@@ -29,6 +29,19 @@ Examplers for older versions:
 
 ## Versions
 
+### v0.2.1
+
+* [Web runtime](v0.2.1)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.1/microw8-0.2.1-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.1/microw8-0.2.1-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.1/microw8-0.2.1-windows.zip)
+
+Changes:
+
+* new gpu accelerated renderer with (optional) crt filter
+* optimized `hline` function, a big speed-up when drawing large filled circles or rectangles
+* print fractional size of packed `uw8` cart
+
 ### v0.2.0
 
 * [Web runtime](v0.2.0)

site/content/docs.md

@@ -436,6 +436,30 @@ and execution of the cart is stopped. Defaults to 30 (0.5s)
 * `-l LEVEL`, `--level LEVEL`: Compression level (0-9). Higher compression levels are really slow.
 * `-o FILE`, `--output FILE`: Write the loaded and optionally packed cart back to disk.
 
+when using the native runtime:
+
+* `-m`, `--no-audio`: Disable audio, also reduces cpu load a bit
+* `--no-gpu`:  Force old cpu-only window code
+* `--filter FILTER`:  Select an upscale filter at startup
+* `--fullscreen`:  Start in fullscreen mode
+
+Note that the cpu-only window does not support fullscreen nor upscale filters.
+
+Unless --no-gpu is given, uw8 will first try to open a gpu accelerated window, falling back to the old cpu-only window if that fails.
+Therefore you should rarely need to manually pass --no-gpu. If you prefer the old pixel doubling look to the now default crt filter,
+you can just pass `--filter nearest` or `--filter 1`.
+
+The upscale filter options are:
+```
+1, nearest              : Anti-aliased nearest filter
+2, fast_crt             : Very simple, cheap crt filter, not very good below a window size of 960x720
+3, ss_crt               : Super sampled crt filter, a little more demanding on the GPU but scales well to smaller window sizes
+4, chromatic_crt        : Variant of fast_crt with a slight offset of the three color dots of a pixel, still pretty cheap
+5, auto_crt (default)   : ss_crt below 960x720, chromatic_crt otherwise
+```
+
+You can switch the upscale filter at any time using the keys 1-5. You can toggle fullscreen with F.
+
 ## `uw8 pack`
 
 Usage:

site/templates/index.html

@@ -4,7 +4,7 @@
         <section>
             <h1 class="text-center heading-text">A WebAssembly based fantasy console</h1>
         </section>
-        <a href="v0.2.0">
+        <a href="v0.2.1">
             <img class="demonstration-gif" style="width:640px;height:480px;image-rendering:pixelated" src="img/technotunnel.png"></img>
         </a>
     </div>

src/main.rs

@@ -13,6 +13,7 @@ use uw8::RunWebServer;
 use uw8::Runtime;
 
 fn main() -> Result<()> {
+    env_logger::Builder::from_env(env_logger::Env::default()).init();
     let mut args = Arguments::from_env();
 
     // try to enable ansi support in win10 cmd shell
@@ -35,7 +36,7 @@ fn main() -> Result<()> {
             println!();
             println!("Usage:");
             #[cfg(any(feature = "native", feature = "browser"))]
-            println!("  uw8 run [-t/--timeout <frames>] [--no-gpu] [--b/--browser] [-w/--watch] [-p/--pack] [-u/--uncompressed] [-l/--level] [-o/--output <out-file>] <file>");
+            println!("  uw8 run [-t/--timeout <frames>] [--b/--browser] [-w/--watch] [-p/--pack] [-u/--uncompressed] [-l/--level] [-o/--output <out-file>] <file>");
             println!("  uw8 pack [-u/--uncompressed] [-l/--level] <in-file> <out-file>");
             println!("  uw8 unpack <in-file> <out-file>");
             println!("  uw8 compile [-d/--debug] <in-file> <out-file>");
@@ -54,8 +55,6 @@ fn run(mut args: Arguments) -> Result<()> {
     let watch_mode = args.contains(["-w", "--watch"]);
     #[allow(unused)]
     let timeout: Option<u32> = args.opt_value_from_str(["-t", "--timeout"])?;
-    #[allow(unused)]
-    let gpu = !args.contains("--no-gpu");
 
     let mut config = Config::default();
     if args.contains(["-p", "--pack"]) {
@@ -82,7 +81,17 @@ fn run(mut args: Arguments) -> Result<()> {
     #[cfg(not(feature = "native"))]
     let run_browser = args.contains(["-b", "--browser"]) || true;
 
-    let disable_audio = args.contains(["-m", "--disable-audio"]);
+    #[allow(unused)]
+    let disable_audio = args.contains(["-m", "--no-audio"]);
+
+    #[cfg(feature = "native")]
+    let window_config = {
+        let mut config = uw8_window::WindowConfig::default();
+        if !run_browser {
+            config.parse_arguments(&mut args);
+        }
+        config
+    };
 
     let filename = args.free_from_os_str::<PathBuf, bool>(|s| Ok(s.into()))?;
 
@@ -95,7 +104,7 @@ fn run(mut args: Arguments) -> Result<()> {
         unimplemented!();
         #[cfg(feature = "native")]
         {
-            let mut microw8 = MicroW8::new(timeout, gpu)?;
+            let mut microw8 = MicroW8::new(timeout, window_config)?;
             if disable_audio {
                 microw8.disable_audio();
             }
@@ -167,7 +176,8 @@ fn load_cart(filename: &Path, config: &Config) -> (Result<Vec<u8>>, Vec<PathBuf>
         if let Some(ref pack_config) = config.pack {
             cart = uw8_tool::pack(&cart, pack_config)?;
             println!(
-                "\npacked size: {:.2} bytes",
+                "\npacked size: {} bytes ({:.2})",
+                cart.len(),
                 uw8_tool::compressed_size(&cart)
             );
         }

src/run_native.rs

@@ -5,7 +5,7 @@ use std::{thread, time::Instant};
 use anyhow::{anyhow, Result};
 use cpal::traits::*;
 use rubato::Resampler;
-use uw8_window::Window;
+use uw8_window::{Window, WindowConfig};
 use wasmtime::{
     Engine, GlobalType, Memory, MemoryType, Module, Mutability, Store, TypedFunc, ValType,
 };
@@ -45,7 +45,7 @@ struct UW8WatchDog {
 }
 
 impl MicroW8 {
-    pub fn new(timeout: Option<u32>, gpu: bool) -> Result<MicroW8> {
+    pub fn new(timeout: Option<u32>, window_config: WindowConfig) -> Result<MicroW8> {
         let mut config = wasmtime::Config::new();
         config.cranelift_opt_level(wasmtime::OptLevel::Speed);
         if timeout.is_some() {
@@ -56,7 +56,7 @@ impl MicroW8 {
         let loader_module =
             wasmtime::Module::new(&engine, include_bytes!("../platform/bin/loader.wasm"))?;
 
-        let window = Window::new(gpu)?;
+        let window = Window::new(window_config)?;
 
         Ok(MicroW8 {
             window,
@@ -134,6 +134,10 @@ impl super::Runtime for MicroW8 {
         let end_frame = platform_instance.get_typed_func::<(), (), _>(&mut store, "endFrame")?;
         let update = instance.get_typed_func::<(), (), _>(&mut store, "upd").ok();
 
+        if let Some(start) = instance.get_typed_func::<(), (), _>(&mut store, "start").ok() {
+            start.call(&mut store, ())?;
+        }
+
         let (sound_tx, stream) = if self.disable_audio {
             (None, None)
         } else {
@@ -314,7 +318,7 @@ fn init_sound(
 
     let snd = instance
         .get_typed_func::<(i32,), f32, _>(&mut store, "snd")
-        .or_else(|_| platform_instance.get_typed_func::<(i32,), f32, _>(&mut store, "gesSnd"))?;
+        .or_else(|_| platform_instance.get_typed_func::<(i32,), f32, _>(&mut store, "sndGes"))?;
 
     let host = cpal::default_host();
     let device = host
@@ -342,7 +346,7 @@ fn init_sound(
         .ok_or_else(|| anyhow!("Could not find float output config"))?;
     let sample_rate = cpal::SampleRate(44100)
         .max(config.min_sample_rate())
-        .max(config.max_sample_rate());
+        .min(config.max_sample_rate());
     let config = config.with_sample_rate(sample_rate);
     let buffer_size = match *config.buffer_size() {
         cpal::SupportedBufferSize::Unknown => cpal::BufferSize::Default,
@@ -419,6 +423,14 @@ fn init_sound(
                     mem[64..68].copy_from_slice(&current_time.to_le_bytes());
                 }
 
+                fn clamp_sample(s: f32) -> f32 {
+                    if s.is_nan() {
+                        0.0
+                    } else {
+                        s.max(-1.0).min(1.0)
+                    }
+                }
+
                 if let Some(ref mut resampler) = resampler {
                     while !buffer.is_empty() {
                         let copy_size = resampler.output_buffers[0]
@@ -429,10 +441,12 @@ fn init_sound(
                             resampler.input_buffers[0].clear();
                             resampler.input_buffers[1].clear();
                             for _ in 0..resampler.resampler.input_frames_next() {
-                                resampler.input_buffers[0]
+                                resampler.input_buffers[0].push(clamp_sample(
-                                    .push(snd.call(&mut store, (sample_index,)).unwrap_or(0.0));
+                                    snd.call(&mut store, (sample_index,)).unwrap_or(0.0),
-                                resampler.input_buffers[1]
+                                ));
-                                    .push(snd.call(&mut store, (sample_index + 1,)).unwrap_or(0.0));
+                                resampler.input_buffers[1].push(clamp_sample(
+                                    snd.call(&mut store, (sample_index + 1,)).unwrap_or(0.0),
+                                ));
                                 sample_index = sample_index.wrapping_add(2);
                             }
 
@@ -458,7 +472,7 @@ fn init_sound(
                     }
                 } else {
                     for v in buffer {
-                        *v = snd.call(&mut store, (sample_index,)).unwrap_or(0.0);
+                        *v = clamp_sample(snd.call(&mut store, (sample_index,)).unwrap_or(0.0));
                         sample_index = sample_index.wrapping_add(1);
                     }
                 }

src/run_web.rs

@@ -11,6 +11,7 @@ use warp::{http::Response, Filter};
 pub struct RunWebServer {
     cart: Arc<Mutex<Vec<u8>>>,
     tx: broadcast::Sender<()>,
+    socket_addr: SocketAddr,
 }
 
 impl RunWebServer {
@@ -18,8 +19,13 @@ impl RunWebServer {
         let cart = Arc::new(Mutex::new(Vec::new()));
         let (tx, _) = broadcast::channel(1);
 
+        let socket_addr = "127.0.0.1:3030"
+            .parse::<SocketAddr>()
+            .expect("Failed to parse socket address");
+
         let server_cart = cart.clone();
         let server_tx = tx.clone();
+        let server_addr = socket_addr.clone();
         thread::spawn(move || {
             let rt = tokio::runtime::Builder::new_current_thread()
                 .enable_io()
@@ -47,24 +53,26 @@ impl RunWebServer {
                     warp::sse::reply(warp::sse::keep_alive().stream(event_stream(&server_tx)))
                 });
 
-                let socket_addr = "127.0.0.1:3030"
+                let server_future = warp::serve(html.or(cart).or(events)).bind(server_addr);
-                    .parse::<SocketAddr>()
-                    .expect("Failed to parse socket address");
-
-                let server_future = warp::serve(html.or(cart).or(events)).bind(socket_addr);
-                println!("Point browser at http://{}", socket_addr);
-                let _ignore_result = webbrowser::open(&format!("http://{}", socket_addr));
                 server_future.await
             });
         });
 
-        RunWebServer { cart, tx }
+        RunWebServer {
+            cart,
+            tx,
+            socket_addr,
+        }
     }
 }
 
 impl super::Runtime for RunWebServer {
     fn load(&mut self, module_data: &[u8]) -> Result<()> {
         if let Ok(mut lock) = self.cart.lock() {
+            if lock.is_empty() && !module_data.is_empty() {
+                println!("Point browser at http://{}", self.socket_addr);
+                let _ignore_result = webbrowser::open(&format!("http://{}", self.socket_addr));
+            }
             lock.clear();
             lock.extend_from_slice(module_data);
         }
@@ -86,4 +94,4 @@ impl Default for RunWebServer {
     fn default() -> RunWebServer {
         RunWebServer::new()
     }
-}
+}

test/start_fn.cwa

@@ -0,0 +1,5 @@
+include "../examples/include/microw8-api.cwa"
+
+export fn start() {
+	printChar('Test');
+}

test/text_modes.cwa

@@ -0,0 +1,13 @@
+include "../examples/include/microw8-api.cwa"
+
+export fn upd() {
+	printString(USER_MEM);
+}
+
+data USER_MEM {
+	i8(12, 31, 5, 6) "Text mode"
+	i8(5, 31, 4, 5) "Graphics mode"
+	i8(6) "Console output\nSecond line\n"
+	i8(4, 31, 4, 12) "Back to text mode"
+	i8(0)
+}

todo.txt

@@ -0,0 +1 @@
+* add support for 16bit sound (not just float)

uw8-tool/src/base_module.rs

@@ -167,6 +167,7 @@ impl BaseModule {
         add_function(&mut functions, &type_map, "exp", &[F32], Some(F32));
 
         add_function(&mut functions, &type_map, "playNote", &[I32, I32], None);
+        add_function(&mut functions, &type_map, "sndGes", &[I32], Some(F32));
 
         for i in functions.len()..64 {
             add_function(

uw8-tool/src/pack.rs

@@ -220,6 +220,11 @@ impl<'a> ParsedModule<'a> {
                     validate_table_section(reader)?;
                     table_section = Some(Section::new(range, ()));
                 }
+                Payload::MemorySection(reader) => {
+                    if reader.get_count() != 0 {
+                        bail!("Found non-empty MemorySection. Memory has to be imported!");
+                    }
+                }
                 Payload::ElementSection(mut reader) => {
                     let mut elements = Vec::with_capacity(reader.get_count() as usize);
                     for _ in 0..reader.get_count() {

uw8-window/Cargo.lock

@@ -986,6 +986,12 @@ version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4fd5641d01c8f18a23da7b6fe29298ff4b55afcccdf78973b24cf3175fee32e"
 
+[[package]]
+name = "pico-args"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db8bcd96cb740d03149cbad5518db9fd87126a10ab519c011893b1754134c468"
+
 [[package]]
 name = "pin-project-lite"
 version = "0.2.9"
@@ -1296,6 +1302,7 @@ dependencies = [
  "env_logger",
  "log",
  "minifb",
+ "pico-args",
  "pollster",
  "wgpu",
  "winapi",

uw8-window/Cargo.toml

@@ -9,6 +9,7 @@ edition = "2021"
 winit = "0.26.1"
 env_logger = "0.9"
 log = "0.4"
+pico-args = "0.4"
 wgpu = "0.13.1"
 pollster = "0.2"
 bytemuck = { version = "1.4", features = [ "derive" ] }

uw8-window/src/cpu.rs

@@ -78,6 +78,6 @@ impl WindowImpl for Window {
     }
 
     fn is_open(&self) -> bool {
-        self.window.is_open()
+        self.window.is_open() && !self.window.is_key_down(Key::Escape)
     }
 }

uw8-window/src/gpu/crt.rs

@@ -112,7 +112,7 @@ impl CrtFilter {
 }
 
 impl Filter for CrtFilter {
-    fn resize(&self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
         let uniforms = Uniforms {
             texture_scale: texture_scale_from_resolution(new_size),
         };

uw8-window/src/gpu/fast_crt.rs

@@ -15,6 +15,7 @@ impl FastCrtFilter {
         screen: &wgpu::TextureView,
         resolution: PhysicalSize<u32>,
         surface_format: wgpu::TextureFormat,
+        chromatic: bool,
     ) -> FastCrtFilter {
         let uniforms = Uniforms {
             texture_scale: texture_scale_from_resolution(resolution),
@@ -104,7 +105,11 @@ impl FastCrtFilter {
             },
             fragment: Some(wgpu::FragmentState {
                 module: &shader,
-                entry_point: "fs_main",
+                entry_point: if chromatic {
+                    "fs_main_chromatic"
+                } else {
+                    "fs_main"
+                },
                 targets: &[Some(wgpu::ColorTargetState {
                     format: surface_format,
                     blend: None,
@@ -126,7 +131,7 @@ impl FastCrtFilter {
 }
 
 impl Filter for FastCrtFilter {
-    fn resize(&self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
         let uniforms = Uniforms {
             texture_scale: texture_scale_from_resolution(new_size),
         };

uw8-window/src/gpu/fast_crt.wgsl

@@ -34,10 +34,9 @@ fn col_factor(offset: f32) -> f32 {
     return 1.0 / (1.0 + offset * offset * 16.0);
 }
 
-@fragment
+fn sample_screen(tex_coords: vec2<f32>) -> vec4<f32> {
-fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    let base = round(tex_coords) - vec2<f32>(0.5);
-    let base = round(in.tex_coords) - vec2<f32>(0.5);
+    let frac = tex_coords - base;
-    let frac = in.tex_coords - base;
     
     let top_factor = row_factor(frac.y);
     let bottom_factor = row_factor(frac.y - 1.0);
@@ -52,3 +51,16 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
     return textureSample(screen_texture, linear_sampler, vec2<f32>(u, v) / vec2<f32>(320.0, 240.0)) * (top_factor + bottom_factor) * (left_factor + right_factor) * 1.1;
 }
 
+@fragment
+fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
+    return sample_screen(in.tex_coords);
+}
+
+@fragment
+fn fs_main_chromatic(in: VertexOutput) -> @location(0) vec4<f32> {
+    let r = sample_screen(in.tex_coords + vec2<f32>(0.2, 0.2)).r;
+    let g = sample_screen(in.tex_coords + vec2<f32>(0.07, -0.27)).g;
+    let b = sample_screen(in.tex_coords + vec2<f32>(-0.27, 0.07)).b;
+    return vec4<f32>(r, g, b, 1.0);
+}
+

uw8-window/src/gpu/mod.rs

@@ -1,4 +1,4 @@
-use crate::{Input, WindowImpl};
+use crate::{Input, WindowConfig, WindowImpl};
 use anyhow::{anyhow, Result};
 use std::{num::NonZeroU32, time::Instant};
 
@@ -37,13 +37,18 @@ pub struct Window {
 }
 
 impl Window {
-    pub fn new() -> Result<Window> {
+    pub fn new(window_config: WindowConfig) -> Result<Window> {
-        async fn create() -> Result<Window> {
+        async fn create(window_config: WindowConfig) -> Result<Window> {
             let event_loop = EventLoop::new();
             let window = WindowBuilder::new()
                 .with_inner_size(PhysicalSize::new(640u32, 480))
                 .with_min_inner_size(PhysicalSize::new(320u32, 240))
                 .with_title("MicroW8")
+                .with_fullscreen(if window_config.fullscreen {
+                    Some(Fullscreen::Borderless(None))
+                } else {
+                    None
+                })
                 .build(&event_loop)?;
 
             window.set_cursor_visible(false);
@@ -73,12 +78,13 @@ impl Window {
                 present_mode: wgpu::PresentMode::AutoNoVsync,
             };
 
-            let filter: Box<dyn Filter> = Box::new(CrtFilter::new(
+            let filter: Box<dyn Filter> = create_filter(
                 &device,
                 &palette_screen_mode.screen_view,
                 window.inner_size(),
                 surface_config.format,
-            ));
+                window_config.filter,
+            );
 
             surface.configure(&device, &surface_config);
 
@@ -95,12 +101,12 @@ impl Window {
                 filter,
                 gamepads: [0; 4],
                 next_frame: Instant::now(),
-                is_fullscreen: false,
+                is_fullscreen: window_config.fullscreen,
                 is_open: true,
             })
         }
 
-        pollster::block_on(create())
+        pollster::block_on(create(window_config))
     }
 }
 
@@ -109,6 +115,7 @@ impl WindowImpl for Window {
         let mut reset = false;
         self.event_loop.run_return(|event, _, control_flow| {
             *control_flow = ControlFlow::WaitUntil(self.next_frame);
+            let mut new_filter = None;
             match event {
                 Event::WindowEvent { event, .. } => match event {
                     WindowEvent::Resized(new_size) => {
@@ -153,42 +160,24 @@ impl WindowImpl for Window {
                                     self.window.set_fullscreen(fullscreen);
                                 }
                                 Some(VirtualKeyCode::R) => reset = true,
-                                Some(VirtualKeyCode::Key1) => {
+                                Some(VirtualKeyCode::Key1) => new_filter = Some(1),
-                                    self.filter = Box::new(SquareFilter::new(
+                                Some(VirtualKeyCode::Key2) => new_filter = Some(2),
-                                        &self.device,
+                                Some(VirtualKeyCode::Key3) => new_filter = Some(3),
-                                        &self.palette_screen_mode.screen_view,
+                                Some(VirtualKeyCode::Key4) => new_filter = Some(4),
-                                        self.window.inner_size(),
+                                Some(VirtualKeyCode::Key5) => new_filter = Some(5),
-                                        self.surface_config.format,
-                                    ))
-                                }
-                                Some(VirtualKeyCode::Key2) => {
-                                    self.filter = Box::new(FastCrtFilter::new(
-                                        &self.device,
-                                        &self.palette_screen_mode.screen_view,
-                                        self.window.inner_size(),
-                                        self.surface_config.format,
-                                    ))
-                                }
-                                Some(VirtualKeyCode::Key3) => {
-                                    self.filter = Box::new(CrtFilter::new(
-                                        &self.device,
-                                        &self.palette_screen_mode.screen_view,
-                                        self.window.inner_size(),
-                                        self.surface_config.format,
-                                    ))
-                                }
                                 _ => (),
                             }
 
                             self.gamepads[0] |= gamepad_button(&input);
                         } else {
-                            self.gamepads[1] &= !gamepad_button(&input);
+                            self.gamepads[0] &= !gamepad_button(&input);
                         }
                     }
                     _ => (),
                 },
                 Event::RedrawEventsCleared => {
                     if Instant::now() >= self.next_frame
+                        // workaround needed on Wayland until the next winit release
                         && self.window.fullscreen().is_some() == self.is_fullscreen
                     {
                         *control_flow = ControlFlow::Exit
@@ -196,6 +185,15 @@ impl WindowImpl for Window {
                 }
                 _ => (),
             }
+            if let Some(new_filter) = new_filter {
+                self.filter = create_filter(
+                    &self.device,
+                    &self.palette_screen_mode.screen_view,
+                    self.window.inner_size(),
+                    self.surface_config.format,
+                    new_filter,
+                );
+            }
         });
         Input {
             gamepads: self.gamepads,
@@ -250,11 +248,93 @@ impl WindowImpl for Window {
     }
 }
 
+fn create_filter(
+    device: &wgpu::Device,
+    screen_texture: &wgpu::TextureView,
+    window_size: PhysicalSize<u32>,
+    surface_format: wgpu::TextureFormat,
+    filter: u32,
+) -> Box<dyn Filter> {
+    match filter {
+        1 => Box::new(SquareFilter::new(
+            device,
+            screen_texture,
+            window_size,
+            surface_format,
+        )),
+        2 => Box::new(FastCrtFilter::new(
+            device,
+            screen_texture,
+            window_size,
+            surface_format,
+            false,
+        )),
+        3 => Box::new(CrtFilter::new(
+            device,
+            screen_texture,
+            window_size,
+            surface_format,
+        )),
+        4 => Box::new(FastCrtFilter::new(
+            device,
+            screen_texture,
+            window_size,
+            surface_format,
+            true,
+        )),
+        _ => Box::new(AutoCrtFilter::new(
+            device,
+            screen_texture,
+            window_size,
+            surface_format,
+        )),
+    }
+}
+
 trait Filter {
-    fn resize(&self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>);
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>);
     fn render<'a>(&'a self, render_pass: &mut wgpu::RenderPass<'a>);
 }
 
+struct AutoCrtFilter {
+    small: CrtFilter,
+    large: FastCrtFilter,
+    resolution: PhysicalSize<u32>,
+}
+
+impl AutoCrtFilter {
+    fn new(
+        device: &wgpu::Device,
+        screen: &wgpu::TextureView,
+        resolution: PhysicalSize<u32>,
+        surface_format: wgpu::TextureFormat,
+    ) -> AutoCrtFilter {
+        let small = CrtFilter::new(device, screen, resolution, surface_format);
+        let large = FastCrtFilter::new(device, screen, resolution, surface_format, true);
+        AutoCrtFilter {
+            small,
+            large,
+            resolution,
+        }
+    }
+}
+
+impl Filter for AutoCrtFilter {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+        self.small.resize(queue, new_size);
+        self.large.resize(queue, new_size);
+        self.resolution = new_size;
+    }
+
+    fn render<'a>(&'a self, render_pass: &mut wgpu::RenderPass<'a>) {
+        if self.resolution.width < 960 || self.resolution.height < 720 {
+            self.small.render(render_pass);
+        } else {
+            self.large.render(render_pass);
+        }
+    }
+}
+
 struct PaletteScreenMode {
     framebuffer: wgpu::Texture,
     palette: wgpu::Texture,

uw8-window/src/gpu/square.rs

@@ -126,7 +126,7 @@ impl SquareFilter {
 }
 
 impl Filter for SquareFilter {
-    fn resize(&self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
+    fn resize(&mut self, queue: &wgpu::Queue, new_size: PhysicalSize<u32>) {
         let uniforms = Uniforms {
             texture_scale: texture_scale_from_resolution(new_size),
         };

uw8-window/src/lib.rs

@@ -4,31 +4,104 @@ use std::time::Instant;
 mod cpu;
 mod gpu;
 
-pub struct Window(Box<dyn WindowImpl>);
+pub struct Window {
+    inner: Box<dyn WindowImpl>,
+    fps_counter: Option<FpsCounter>,
+}
+
+struct FpsCounter {
+    start: Instant,
+    num_frames: u32,
+}
 
 impl Window {
-    pub fn new(gpu: bool) -> Result<Window> {
+    pub fn new(config: WindowConfig) -> Result<Window> {
-        if gpu {
+        let fps_counter = if config.fps_counter {
-            match gpu::Window::new() {
+            Some(FpsCounter {
-                Ok(window) => return Ok(Window(Box::new(window))),
+                start: Instant::now(),
+                num_frames: 0,
+            })
+        } else {
+            None
+        };
+        if config.enable_gpu {
+            match gpu::Window::new(config) {
+                Ok(window) => {
+                    return Ok(Window {
+                        inner: Box::new(window),
+                        fps_counter,
+                    })
+                }
                 Err(err) => eprintln!(
                     "Failed to create gpu window: {}\nFalling back tp cpu window",
                     err
                 ),
             }
         }
-        cpu::Window::new().map(|window| Window(Box::new(window)))
+        cpu::Window::new().map(|window| Window {
+            inner: Box::new(window),
+            fps_counter,
+        })
     }
 
     pub fn begin_frame(&mut self) -> Input {
-        self.0.begin_frame()
+        self.inner.begin_frame()
     }
     pub fn end_frame(&mut self, framebuffer: &[u8], palette: &[u8], next_frame: Instant) {
-        self.0.end_frame(framebuffer, palette, next_frame)
+        self.inner.end_frame(framebuffer, palette, next_frame);
+        if let Some(ref mut fps_counter) = self.fps_counter {
+            fps_counter.num_frames += 1;
+            let elapsed = fps_counter.start.elapsed().as_secs_f32();
+            if elapsed >= 1.0 {
+                println!("fps: {:.1}", fps_counter.num_frames as f32 / elapsed);
+                fps_counter.num_frames = 0;
+                fps_counter.start = Instant::now();
+            }
+        }
     }
 
     pub fn is_open(&self) -> bool {
-        self.0.is_open()
+        self.inner.is_open()
+    }
+}
+
+#[derive(Debug)]
+pub struct WindowConfig {
+    enable_gpu: bool,
+    filter: u32,
+    fullscreen: bool,
+    fps_counter: bool,
+}
+
+impl Default for WindowConfig {
+    fn default() -> WindowConfig {
+        WindowConfig {
+            enable_gpu: true,
+            filter: 5,
+            fullscreen: false,
+            fps_counter: false,
+        }
+    }
+}
+
+impl WindowConfig {
+    pub fn parse_arguments(&mut self, args: &mut pico_args::Arguments) {
+        self.enable_gpu = !args.contains("--no-gpu");
+        if let Some(filter) = args.opt_value_from_str::<_, String>("--filter").unwrap() {
+            self.filter = match filter.as_str() {
+                "1" | "nearest" => 1,
+                "2" | "fast_crt" => 2,
+                "3" | "ss_crt" => 3,
+                "4" | "chromatic" => 4,
+                "5" | "auto_crt" => 5,
+                o => {
+                    println!("Unknown --filter '{}'", o);
+                    std::process::exit(1);
+                }
+            }
+        }
+        self.fullscreen = args.contains("--fullscreen");
+        self.fps_counter = args.contains("--fps");
     }
 }
 

uw8-window/src/main.rs

@@ -1,8 +1,11 @@
 use std::time::Instant;
+use uw8_window::WindowConfig;
 
 fn main() {
     env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
 
+    let mut args = pico_args::Arguments::from_env();
+
     let mut framebuffer = vec![0u8; 320 * 240];
     let mut start_time = Instant::now();
 
@@ -18,7 +21,10 @@ fn main() {
     let mut fps_start = Instant::now();
     let mut fps_counter = 0;
 
-    let mut window = uw8_window::Window::new(true).unwrap();
+    let mut window_config = WindowConfig::default();
+    window_config.parse_arguments(&mut args);
+
+    let mut window = uw8_window::Window::new(window_config).unwrap();
 
     while window.is_open() {
         let input = window.begin_frame();

web/src/audiolet.js

@@ -63,7 +63,7 @@ class APU extends AudioWorkletProcessor {
 
         this.memory = memory;
 
-        this.snd = instance.exports.snd || platform_instance.exports.gesSnd;
+        this.snd = instance.exports.snd || platform_instance.exports.sndGes;
 
         this.port.postMessage(2);
     }

web/src/microw8.js

@@ -263,6 +263,10 @@ export default function MicroW8(screen, config = {}) {
             window.addEventListener('blur', () => updateVisibility(false), { signal: abortController.signal });
             updateVisibility(document.hasFocus());
 
+            if (instance.exports.start) {
+                instance.exports.start();
+            }
+
             function mainloop() {
                 if (!keepRunning) {
                     return;