add frame counter at memory location 72

add support to output sound on devices that only offer surround configs
update to git version of wasmtime
2026-01-20 11:16:42 +01:00 · 2024-06-16 14:10:18 +02:00 · 2024-06-16 13:21:23 +02:00 · 2024-06-16 13:07:29 +02:00 · 2024-05-26 12:54:59 +02:00 · 2024-04-27 23:22:51 +02:00
38 changed files with 5026 additions and 4153 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "uw8"
-version = "0.2.2"
+version = "0.3.1"
 edition = "2021"

 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -11,21 +11,21 @@ native = ["wasmtime", "uw8-window", "cpal", "rubato" ]
 browser = ["warp", "tokio", "tokio-stream", "webbrowser"]

 [dependencies]
-wasmtime = { version = "5.0.0", optional = true }
+wasmtime = { git = "https://github.com/bytecodealliance/wasmtime.git", rev = "0f48f939b9870036562ca02ff21253547a9f1a5c", optional = true }
 anyhow = "1"
-env_logger = "0.10"
+env_logger = "0.11.3"
 log = "0.4"
 uw8-window = { path = "uw8-window", optional = true }
-notify-debouncer-mini = { version = "0.2.1", default-features = false }
+notify-debouncer-mini = { version = "0.4.1", default-features = false }
 pico-args = "0.5"
 curlywas = { git = "https://github.com/exoticorn/curlywas.git", rev = "0e7ea50" }
 wat = "1"
 uw8-tool = { path = "uw8-tool" }
 same-file = "1"
-warp = { version = "0.3.3", optional = true }
-tokio = { version = "1.24.0", features = ["sync", "rt"], optional = true }
-tokio-stream = { version = "0.1.11", features = ["sync"], optional = true }
-webbrowser = { version = "0.8.6", optional = true }
+warp = { version = "0.3.6", optional = true }
+tokio = { version = "1.37.0", features = ["sync", "rt"], optional = true }
+tokio-stream = { version = "0.1.15", features = ["sync"], optional = true }
+webbrowser = { version = "0.8.13", optional = true }
 ansi_term = "0.12.1"
-cpal = { version = "0.14.2", optional = true }
-rubato = { version = "0.12.0", optional = true }
+cpal = { version = "0.15.3", optional = true }
+rubato = { version = "0.15.0", optional = true }
--- a/README.md
+++ b/README.md
@@ -15,9 +15,9 @@ See [here](https://exoticorn.github.io/microw8/) for more information and docs.

 ## Downloads

-* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-linux.tgz)
-* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-macos.tgz)
-* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-windows.zip)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-windows.zip)

 The download includes

--- a/examples/curlywas/scaled_text.cwa
+++ b/examples/curlywas/scaled_text.cwa
@@ -0,0 +1,14 @@
+include "../include/microw8-api.cwa"
+
+export fn upd() {
+	printString(USER_MEM);
+}
+
+data USER_MEM {
+	// clear screen, switch to graphics text mode, text scale 4
+	i8(12, 5, 30, 4)
+	// text color, position, print two lines
+	i8(15, 86, 31, 8, 80) "Hello," i8(8, 8, 8, 8, 8, 10) "MicroW8!"
+	// print same two lines with different color and slight offset 
+	i8(15, 47, 31, 10, 82) "Hello," i8(8, 8, 8, 8, 8, 10) "MicroW8!" i8(0)
+}
--- a/examples/curlywas/sprites.cwa
+++ b/examples/curlywas/sprites.cwa
@@ -4,13 +4,13 @@ const SPRITE = 0x20000;

 export fn upd() {
 	cls(0);
-	let t = time();
+	let t = time() / 2_f;
 	let i: i32;
 	loop spriteLoop {
-		let inline x = sin(t * -1.3 + i as f32 / 8_f) * 180_f + 160_f;
-		let inline y = sin(t * 1.7 + i as f32 / 9_f) * 140_f + 120_f;
-		blitSprite(SPRITE, 16, x as i32, y as i32, 0x100);
-		branch_if (i +:= 1) < 200: spriteLoop;
+		let inline x = sin(t * -1.3 + i as f32 * (3.141 / 30_f)) * 180_f + 160_f;
+		let inline y = sin(t * 1.7 + i as f32 * (3.141 / 40_f)) * 140_f + 120_f;
+		blitSprite(SPRITE, 16, x as i32, y as i32, (i & 3) * 0x200 + 0x100);
+		branch_if (i +:= 1) < 100: spriteLoop;
 	}
 }

--- a/examples/curlywas/tunnel.cwa
+++ b/examples/curlywas/tunnel.cwa
@@ -3,14 +3,16 @@ include "../include/microw8-api.cwa"
 export fn upd() {
    let i: i32;
    loop pixels {
-        let inline t = time() * 63 as f32;
-        let lazy x = (i % 320 - 160) as f32;
-        let lazy y = (i / 320 - 120) as f32;
-        let inline d = 40000 as f32 / sqrt(x * x + y * y);
-        let inline u = atan2(x, y) * (512.0 / 3.141);
-        let inline c = ((i32.trunc_sat_f32_s(d + t * 2 as f32) ^ i32.trunc_sat_f32_s(u + t)) & 255) >> 4;
+        let inline t = 16!56;
+        let inline x = (i % 320 - 160) as f32;
+        let inline y = (i #/ 320 - 120) as f32;
+        let inline d = 0xa000 as f32 / sqrt(x * x + y * y);
+        let inline a = atan2(x, y) * 163_f; // (512 / pi)
+        let inline u = i32.trunc_sat_f32_s(a) + t;
+        let inline v = i32.trunc_sat_f32_s(d) + t * 2;
+        let inline c = ((v ^ u) #/ 16) % 16;
        i?FRAMEBUFFER = c;

        branch_if (i := i + 1) < 320*240: pixels;
    }
-}
+}
--- a/examples/zig/.gitignore
+++ b/examples/zig/.gitignore
@@ -1,2 +1,2 @@
-zig-cache/
-zig-out/
+/zig-cache/
+/zig-out/
--- a/examples/zig/game/build.zig
+++ b/examples/zig/game/build.zig
@@ -5,7 +5,11 @@ pub fn build(b: *std.build.Builder) void {

    const lib = b.addSharedLibrary("cart", "main.zig", .unversioned);
    lib.setBuildMode(mode);
-    lib.setTarget(.{ .cpu_arch = .wasm32, .os_tag = .freestanding, .cpu_features_add = std.Target.wasm.featureSet(&.{.nontrapping_fptoint}) });
+    lib.setTarget(.{
+        .cpu_arch = .wasm32,
+        .os_tag = .freestanding,
+        .cpu_features_add = std.Target.wasm.featureSet(&.{ .nontrapping_fptoint })
+    });
    lib.import_memory = true;
    lib.initial_memory = 262144;
    lib.max_memory = 262144;
@@ -14,13 +18,19 @@ pub fn build(b: *std.build.Builder) void {
    lib.install();

    if (lib.install_step) |install_step| {
-        const run_filter_exports = b.addSystemCommand(&[_][]const u8{ "uw8", "filter-exports", "zig-out/lib/cart.wasm", "zig-out/lib/cart-filtered.wasm" });
+        const run_filter_exports = b.addSystemCommand(&[_][]const u8{
+            "uw8", "filter-exports", "zig-out/lib/cart.wasm", "zig-out/lib/cart-filtered.wasm"
+        });
        run_filter_exports.step.dependOn(&install_step.step);

-        const run_wasm_opt = b.addSystemCommand(&[_][]const u8{ "wasm-opt", "--enable-nontrapping-float-to-int", "-Oz", "-o", "zig-out/cart.wasm", "zig-out/lib/cart-filtered.wasm" });
+        const run_wasm_opt = b.addSystemCommand(&[_][]const u8{
+            "wasm-opt", "-Oz", "-o", "zig-out/cart.wasm", "zig-out/lib/cart-filtered.wasm"
+        });
        run_wasm_opt.step.dependOn(&run_filter_exports.step);

-        const run_uw8_pack = b.addSystemCommand(&[_][]const u8{ "uw8", "pack", "-l", "5", "zig-out/cart.wasm", "zig-out/cart.uw8" });
+        const run_uw8_pack = b.addSystemCommand(&[_][]const u8{
+            "uw8", "pack", "-l", "9", "zig-out/cart.wasm", "zig-out/cart.uw8"
+        });
        run_uw8_pack.step.dependOn(&run_wasm_opt.step);

        const make_opt = b.step("make_opt", "make size optimized cart");
--- a/examples/zig/game/main.zig
+++ b/examples/zig/game/main.zig
@@ -1,142 +0,0 @@
-const uw8 = @import("uw8.zig");
-
-var redBallSprite: [16 * 16]u8 = undefined;
-var greenBallSprite: [16 * 16]u8 = undefined;
-var blueBallSprite: [16 * 16]u8 = undefined;
-var wallSprite: [24 * 24]u8 = undefined;
-
-const SphereConfigStep = struct { size: u8, color: u8 };
-// zig fmt: off
-const redSphereConfig: [4]SphereConfigStep = .{
-    .{ .size = 0, .color = 0x3d },
-    .{ .size = 2, .color = 0x48 },
-    .{ .size = 6, .color = 0x65 },
-    .{ .size = 9, .color = 0x55 }
-};
-const greenSphereConfig: [4]SphereConfigStep = .{
-    .{ .size = 0, .color = 0x7d },
-    .{ .size = 2, .color = 0x88 },
-    .{ .size = 6, .color = 0x96 },
-    .{ .size = 9, .color = 0xa3 }
-};
-const blueSphereConfig: [4]SphereConfigStep = .{
-    .{ .size = 0, .color = 0x2e },
-    .{ .size = 2, .color = 0x19 },
-    .{ .size = 6, .color = 0x17 },
-    .{ .size = 9, .color = 0x24 }
-};
-
-const levelData: [14] *const [19]u8 = .{
-  "xxxxxxxxxxxxxxxxxxx",
-  "x      x   x      x",
-  "x x xx   x   xx x x",
-  "x x  xxx x xxx  x x",
-  "x xx x       x xx x",
-  "x xx   xxxxx   xx x",
-  "x    x       x    x",
-  "x xx xx xxx xx xx x",
-  "x  x xx     xx x  x",
-  "xx x    x x    x xx",
-  "x  xx xxx xxx xx  x",
-  "x xx   x   x   xx x",
-  "x    x   x   x    x",
-  "xxxxxxxxxxxxxxxxxxx",
-};
-// zig fmt: on
-
-export fn start() void {
-    blitSphere(&redBallSprite, &redSphereConfig);
-    blitSphere(&greenBallSprite, &greenSphereConfig);
-    blitSphere(&blueBallSprite, &blueSphereConfig);
-
-    createWallSprite();
-}
-
-fn blitSphere(sprite: [*]u8, config: []const SphereConfigStep) void {
-    for (config) |circle| {
-        uw8.circle(8, 8, 8, circle.color);
-        uw8.circle(5, 6, @intToFloat(f32, circle.size), 0);
-        uw8.grabSprite(sprite, 16, 0, 0, 0x100);
-    }
-}
-
-fn createWallSprite() void {
-    uw8.cls(0xe4);
-    var i: i32 = 0;
-    while (i < 50) : (i += 1) {
-        const x = uw8.randomf() * 16;
-        const y = uw8.randomf() * 16;
-        const radius = uw8.randomf() * 2 + 1;
-        const c = @intCast(u8, (uw8.random() & 3)) + 0x95;
-        var j: i32 = 0;
-        while (j < 9) : (j += 1) {
-            uw8.circle(x + @intToFloat(f32, @rem(j, 3) * 16), y + @intToFloat(f32, @divFloor(j, 3) * 16), radius, c);
-        }
-    }
-    uw8.grabSprite(&wallSprite, 16, 16, 16, 0);
-}
-
-export fn upd() void {
-    uw8.cls(0);
-
-    var y: usize = 0;
-    while (y < levelData.len) : (y += 1) {
-        var x: usize = 0;
-        while (x < levelData[y].len) : (x += 1) {
-            if (levelData[y][x] == 'x') {
-                uw8.blitSprite(&wallSprite, 16, 8 + @intCast(i32, x) * 16, @intCast(i32, y) * 16, 0);
-            }
-        }
-    }
-
-    updateEnemy(&enemies[0], &redBallSprite);
-    updateEnemy(&enemies[1], &greenBallSprite);
-    updateEnemy(&enemies[2], &blueBallSprite);
-}
-
-const EntityState = struct { x: i32, y: i32, dir: u2 };
-var enemies: [3]EntityState = .{
-    .{ .x = 16, .y = 16, .dir = 1 },
-    .{ .x = 16 * 18, .y = 16, .dir = 3 },
-    .{ .x = 16, .y = 16 * 12, .dir = 1 },
-};
-
-fn updateEnemy(enemy: *EntityState, sprite: [*]u8) void {
-    switch (enemy.dir) {
-        0 => enemy.y -= 1,
-        1 => enemy.x += 1,
-        2 => enemy.y += 1,
-        3 => enemy.x -= 1,
-    }
-    if (((enemy.x | enemy.y) & 15) == 0) {
-        const tx = @intCast(usize, enemy.x) / 16;
-        const ty = @intCast(usize, enemy.y) / 16;
-        var dir = enemy.dir;
-        var count: u32 = 0;
-        if (enemy.dir != 2 and levelData[ty - 1][tx] == ' ') {
-            dir = 0;
-            count += 1;
-        }
-        if (enemy.dir != 3 and levelData[ty][tx + 1] == ' ') {
-            count += 1;
-            if (uw8.random() % count == 0) {
-                dir = 1;
-            }
-        }
-        if (enemy.dir != 0 and levelData[ty + 1][tx] == ' ') {
-            count += 1;
-            if (uw8.random() % count == 0) {
-                dir = 2;
-            }
-        }
-        if (enemy.dir != 1 and levelData[ty][tx - 1] == ' ') {
-            count += 1;
-            if (uw8.random() % count == 0) {
-                dir = 3;
-            }
-        }
-        enemy.dir = dir;
-    }
-
-    uw8.blitSprite(sprite, 16, 8 + enemy.x, enemy.y, 0x100);
-}
--- a/examples/zig/game/uw8.zig
+++ b/examples/zig/game/uw8.zig
@@ -1,10 +0,0 @@
-pub extern fn random() u32;
-pub extern fn randomf() f32;
-pub extern fn time() f32;
-pub extern fn cls(color: u8) void;
-pub extern fn circle(x: f32, y: f32, radiu: f32, color: u8) void;
-pub extern fn blitSprite(spriteData: [*]u8, size: u32, x: i32, y: i32, ctrl: u32) void;
-pub extern fn grabSprite(spriteData: [*]u8, size: u32, x: i32, y: i32, ctrl: u32) void;
-pub extern fn printString(str: [*:0]u8) void;
-pub extern fn printInt(value: i32) void;
-pub extern fn printChar(char: u32) void;
--- a/examples/zig/tunnel/main.zig
+++ b/examples/zig/tunnel/main.zig
@@ -1,11 +1,11 @@
 extern fn atan2(x: f32, y: f32) f32;
 extern fn time() f32;

-pub const FRAMEBUFFER: *[320 * 240]u8 = @intToPtr(*[320 * 240]u8, 120);
+pub const FRAMEBUFFER: *[320*240]u8 = @intToPtr(*[320*240]u8, 120);

 export fn upd() void {
    var i: u32 = 0;
-    while (true) {
+    while(true) {
        var t = time() * 63.0;
        var x = @intToFloat(f32, (@intCast(i32, i % 320) - 160));
        var y = @intToFloat(f32, (@intCast(i32, i / 320) - 120));
@@ -13,10 +13,8 @@ export fn upd() void {
        var u = atan2(x, y) * 512.0 / 3.141;
        var c = @intCast(u8, (@floatToInt(i32, d + t * 2.0) ^ @floatToInt(i32, u + t)) & 255) >> 4;

-        FRAMEBUFFER[i] = c;
+        FRAMEBUFFER[@as(usize, i)] = c;
        i += 1;
-        if (i >= 320 * 240) {
-            break;
-        }
+        if(i >= 320*240) { break; }
    }
-}
+}
--- a/examples/zig/tunnel/build.zig
+++ b/examples/zig/tunnel/build.zig
@@ -1,31 +0,0 @@
-const std = @import("std");
-
-pub fn build(b: *std.build.Builder) void {
-    const mode = std.builtin.Mode.ReleaseSmall;
-
-    const lib = b.addSharedLibrary("cart", "main.zig", .unversioned);
-    lib.setBuildMode(mode);
-    lib.setTarget(.{ .cpu_arch = .wasm32, .os_tag = .freestanding, .cpu_features_add = std.Target.wasm.featureSet(&.{.nontrapping_fptoint}) });
-    lib.import_memory = true;
-    lib.initial_memory = 262144;
-    lib.max_memory = 262144;
-    lib.global_base = 81920;
-    lib.stack_size = 8192;
-    lib.install();
-
-    if (lib.install_step) |install_step| {
-        const run_filter_exports = b.addSystemCommand(&[_][]const u8{ "uw8", "filter-exports", "zig-out/lib/cart.wasm", "zig-out/lib/cart-filtered.wasm" });
-        run_filter_exports.step.dependOn(&install_step.step);
-
-        const run_wasm_opt = b.addSystemCommand(&[_][]const u8{ "wasm-opt", "--enable-nontrapping-float-to-int", "-Oz", "-o", "zig-out/cart.wasm", "zig-out/lib/cart-filtered.wasm" });
-        run_wasm_opt.step.dependOn(&run_filter_exports.step);
-
-        const run_uw8_pack = b.addSystemCommand(&[_][]const u8{ "uw8", "pack", "-l", "9", "zig-out/cart.wasm", "zig-out/cart.uw8" });
-        run_uw8_pack.step.dependOn(&run_wasm_opt.step);
-
-        const make_opt = b.step("make_opt", "make size optimized cart");
-        make_opt.dependOn(&run_uw8_pack.step);
-
-        b.default_step = make_opt;
-    }
-}
--- a/platform/Cargo.lock
+++ b/platform/Cargo.lock
@@ -19,47 +19,54 @@ dependencies = [

 [[package]]
 name = "ahash"
-version = "0.7.6"
+version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
+checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
 dependencies = [
- "getrandom",
+ "cfg-if",
 "once_cell",
 "version_check",
+ "zerocopy",
 ]

 [[package]]
 name = "anyhow"
-version = "1.0.52"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84450d0b4a8bd1ba4144ce8ce718fbc5d071358b1e5384bace6536b3d1f2d5b3"
+checksum = "0952808a6c2afd1aa8947271f3a60f1a6763c7b912d210184c5149b5cf147247"

 [[package]]
 name = "ariadne"
-version = "0.1.3"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7080ae01b2f0c312065d4914cd0f0de045eb8832e9415b355106a6cff3073cb4"
+checksum = "f1cb2a2046bea8ce5e875551f5772024882de0b540c7f93dfc5d6cf1ca8b030c"
 dependencies = [
 "yansi",
 ]

 [[package]]
 name = "autocfg"
-version = "1.0.1"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+checksum = "f1fdabc7756949593fe60f30ec81974b613357de856987752631dea1e3394c80"
+
+[[package]]
+name = "bitflags"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"

 [[package]]
 name = "bytemuck"
-version = "1.7.3"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "439989e6b8c38d1b6570a384ef1e49c8848128f5a97f3914baef02920842712f"
+checksum = "5d6d68c57235a3a081186990eca2867354726650f42f7516ca50c28d6281fd15"

 [[package]]
 name = "cc"
-version = "1.0.72"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22a9137b95ea06864e018375b72adfb7db6e6f68cfc8df5a04d00288050485ee"
+checksum = "2678b2e3449475e95b0aa6f9b506a28e61b3dc8996592b983695e8ebb58a8b41"

 [[package]]
 name = "cdivsufsort"
@@ -88,54 +95,47 @@ dependencies = [

 [[package]]
 name = "const-random"
-version = "0.1.13"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f590d95d011aa80b063ffe3253422ed5aa462af4e9867d43ce8337562bac77c4"
+checksum = "87e00182fe74b066627d63b85fd550ac2998d4b0bd86bfed477a0ae4c7c71359"
 dependencies = [
 "const-random-macro",
- "proc-macro-hack",
 ]

 [[package]]
 name = "const-random-macro"
-version = "0.1.13"
+version = "0.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "615f6e27d000a2bffbc7f2f6a8669179378fa27ee4d0a509e985dfc0a7defb40"
+checksum = "f9d839f2a20b0aee515dc581a6172f2321f96cab76c1a38a4c584a194955390e"
 dependencies = [
 "getrandom",
- "lazy_static",
- "proc-macro-hack",
+ "once_cell",
 "tiny-keccak",
 ]

 [[package]]
 name = "crc32fast"
-version = "1.3.2"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
+checksum = "b3855a8a784b474f333699ef2bbca9db2c4a1f6d9088a90a2d25b1eb53111eaa"
 dependencies = [
 "cfg-if",
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@@ -392,44 +396,57 @@ dependencies = [
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+ "syn 2.0.58",
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 [[package]]
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+checksum = "2c03529cd0c4400a2449f640d2f27cd1b48c3065226d15e26d98e4429ab0adb7"
 dependencies = [
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+ "gimli",
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 "leb128",
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- "wasmparser 0.77.0",
+ "wasm-encoder 0.29.0",
+ "wasmparser 0.80.2",
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 [[package]]
@@ -547,14 +525,14 @@ dependencies = [
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+ "syn 1.0.109",
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+checksum = "18c41dbd92eaebf3612a39be316540b8377c871cb9bde6b064af962984912881"
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 dependencies = [
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+ "bitflags",
+ "indexmap 2.2.6",
+ "semver",
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+name = "zerocopy"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74d4d3961e53fa4c9a25a8637fc2bfaf2595b3d3ae34875568a5cf64787716be"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ce1b18ccd8e73a9321186f97e46f9f04b778851177567b1975109d26a08d2a6"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.58",
+]
--- a/platform/bin/platform.uw8
+++ b/platform/bin/platform.uw8
--- a/platform/src/ges.cwa
+++ b/platform/src/ges.cwa
@@ -62,7 +62,6 @@ export fn sndGes(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 sndGes(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);
                }

--- a/platform/src/platform.cwa
+++ b/platform/src/platform.cwa
@@ -62,6 +62,7 @@ export fn cls(col: i32) {
    textCursorX = 0;
    textCursorY = 0;
    outputChannel = 0;
+    textScale = 1;
    memory.fill(120, col, 320*240);
 }

@@ -447,6 +448,7 @@ global mut textCursorY = 0;
 global mut textColor = 15;
 global mut bgColor = 0;
 global mut outputChannel = 0;
+global mut textScale = 1;

 export fn printChar(char: i32) {
    loop chars {
@@ -458,6 +460,8 @@ export fn printChar(char: i32) {
 global mut controlCodeLength = 0;

 fn printSingleChar(char: i32) {
+    let charSize = 8 * textScale;
+
    if outputChannel >= 2 & (char < 4 | char > 6) {
        logChar(char);
        return;
@@ -491,9 +495,9 @@ fn printSingleChar(char: i32) {
    }

    if char == 8 {
-        textCursorX = textCursorX - 8;
+        textCursorX = textCursorX - charSize;
        if !outputChannel & textCursorX < 0 {
-            textCursorX = 320-8;
+            textCursorX = 320-charSize;
            printSingleChar(11);
        }
        return;
@@ -503,34 +507,34 @@ fn printSingleChar(char: i32) {
        if !outputChannel & textCursorX >= 320 {
            printChar(0xd0a);
        }
-        textCursorX = textCursorX + 8;
+        textCursorX = textCursorX + charSize;
        return;
    }

    if char == 10 {
-        textCursorY = textCursorY + 8;
+        textCursorY = textCursorY + charSize;
        if !outputChannel & textCursorY >= 240 {
-            textCursorY = 240 - 8;
+            textCursorY = 240 - charSize;
            let i: i32;
            loop scroll_copy {
-                i!120 = i!(120 + 320 * 8);
-                branch_if (i := i + 4) < 320 * (240 - 8): scroll_copy;
+                i!120 = (i + 320 * charSize)!120;
+                branch_if (i := i + 4) < 320 * (240 - charSize): scroll_copy;
            }
-            rectangle(0 as f32, (240 - 8) as f32, 320 as f32, 8 as f32, bgColor);
+            rectangle(0 as f32, (240 - charSize) as f32, 320 as f32, charSize as f32, bgColor);
        }
        return;
    }

    if char == 11 {
-        textCursorY = textCursorY - 8;
+        textCursorY = textCursorY - charSize;
        if !outputChannel & textCursorY < 0 {
            textCursorY = 0;
-            let i = 320 * (240 - 8);
+            let i = 320 * (240 - charSize);
            loop scroll_copy {
-                i!(116 + 320 * 8) = i!116;
+                (i + 320 * charSize)!116 = i!116;
                branch_if (i := i - 4): scroll_copy;
            }
-            rectangle(0 as f32, 0 as f32, 320 as f32, 8 as f32, bgColor);
+            rectangle(0 as f32, 0 as f32, 320 as f32, charSize as f32, bgColor);
        }
        return;
    }
@@ -562,6 +566,12 @@ fn printSingleChar(char: i32) {
        return;
    }

+    if char == 30 {
+        let scale = 0x12d20?1;
+        textScale = select(scale > 0 & scale <= 16, scale, 1);
+        return;
+    }
+
    if char == 31 {
        textCursorX = 0x12d20?1 * (8 - outputChannel * 6);
        textCursorY = 0x12d20?2 * (8 - outputChannel * 7);
@@ -584,7 +594,7 @@ data(0x12d00) {
    1, 1, 1, 1, // 16-19,
    1, 1, 1, 1, // 20-23,
    1, 1, 1, 1, // 24-27,
-    1, 1, 1, 3 // 28-31
+    1, 1, 2, 3 // 28-31
  )
 }

@@ -593,26 +603,28 @@ fn drawChar(char: i32) {
        printChar(0xd0a);
    }

+    let charSize = 8 * textScale;
+
    let y: i32;
    loop rows {
-        let bits = (char * 8 + y)?0x13400;
+        let bits = (char * 8 + y / textScale)?0x13400;
        let x = 0;
        if outputChannel {
            loop pixels {
-                if (bits := bits << 1) & 256 {
+                if (bits << (x / textScale)) & 128 {
                    setPixel(textCursorX + x, textCursorY + y, textColor);
                }
-                branch_if (x := x + 1) < 8: pixels;
+                branch_if (x := x + 1) < charSize: pixels;
            }
        } else {
            loop pixels {
-                setPixel(textCursorX + x, textCursorY + y, select((bits := bits << 1) & 256, textColor, bgColor));
-                branch_if (x := x + 1) < 8: pixels;
+                setPixel(textCursorX + x, textCursorY + y, select((bits << (x / textScale)) & 128, textColor, bgColor));
+                branch_if (x := x + 1) < charSize: pixels;
            }
        }
-        branch_if (y := y + 1) < 8: rows;
+        branch_if (y := y + 1) < charSize: rows;
    }
-    textCursorX = textCursorX + 8;
+    textCursorX = textCursorX + charSize;
 }

 export fn printString(ptr: i32) {
--- a/site/content/_index.md
+++ b/site/content/_index.md
@@ -31,51 +31,20 @@ Examplers for older versions:

 ## Versions

-### v0.2.2
+### v0.3.0

-* [Web runtime](v0.2.2)
-* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-linux.tgz)
-* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-macos.tgz)
-* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-windows.zip)
+* [Web runtime](v0.3.0)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-windows.zip)

 Changes:

-* call `start` function after loading cart if the cart exports one
-* fix `sndGes` having the wrong name and not being included in the auto imports
-* fix control codes 4-6 (change text output mode) being invoked when used as parameters in other control sequences
-* only open browser window once a cart was compiled sucessfully when running with `-b`
-
-### 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)
-* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-linux.tgz)
-* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-macos.tgz)
-* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-windows.zip)
-
-Changes:
-
-* [add sound support!](docs#sound)
-* add support to redirect text output to the console for debugging using control code 6
-* update curlywas:
-  * add support for `else if`
-  * add support for escape sequences in strings
-  * add support for char literals
-  * add support for binop-assignment, eg. `+=`, `^=`, `<<=` etc. (also support for the tee operator: `+:=`)
-  * "integer constant cast to float" literal syntax in CurlyWas (ex. `1_f` is equivalent to `1 as f32`)
+* add blitSprite and grabSprite API calls
+* add support for integer scaling up to 16x for printing text
+* fix incompatibility with sound devices only offering 16bit audio formats
+* add support for br_table instruction in packed carts

 ### Older versions

-[Find older versions here.](versions)
+[Find older versions here.](versions)
--- a/site/content/docs.md
+++ b/site/content/docs.md
@@ -5,7 +5,7 @@ description = "Docs"

 # Overview

-MicroW8 loads WebAssembly modules with a maximum size of 256kb. You module needs to export
+MicroW8 loads WebAssembly modules with a maximum size of 256kb. Your module needs to export
 a function `fn upd()` which will be called once per frame.
 After calling `upd` MicroW8 will display the 320x240 8bpp framebuffer located
 at offset 120 in memory with the 32bpp palette located at 0x13000.
@@ -21,7 +21,7 @@ loaded.
 00000-00040: user memory
 00040-00044: time since module start in ms
 00044-0004c: gamepad state
-0004c-00050: reserved
+0004c-00050: number of frames since module start
 00050-00070: sound data (synced to sound thread)
 00070-00078: reserved
 00078-12c78: frame buffer
@@ -238,6 +238,13 @@ When printing characters only the foreground pixels are set, the background is "

 Moving/printing past any border does not cause any special operation, the cursor just goes off-screen.

+### Text scale
+
+An integer text scale factor in the range 1x-16x can be set with control char 30. An attempt to
+set a scale outside that range will reset the scale to 1x.
+
+After startup and `cls` the scale is initialized to 1x.
+
 ### Control chars

 Characters 0-31 are control characters and don't print by default. They take the next 0-2 following characters as parameters.
@@ -262,7 +269,8 @@ Avoid the reserved control chars, they are currently NOPs but their behavior can
 | 15    | color      | Set the text color                         |
 | 16-23 | -          | Reserved                                   |
 | 24    | -          | Swap text/background colors                |
-| 25-30 | -          | Reserved                                   |
+| 25-29 | -          | Reserved                                   |
+| 30    | scale      | Set text scale (1-16)                      |
 | 31    | x, y       | Set cursor position (*)                    |

 (*) In graphics mode, the x coordinate is doubled when using control char 31 to be able to cover the whole screen with one byte.
@@ -271,7 +279,7 @@ Avoid the reserved control chars, they are currently NOPs but their behavior can

 Control code 6 switches all text output (except codes 4 and 5 to switch output back to the screen) to the console. Where exactly this ends
 up (if at all) is an implementation detail of the runtimes. The native dev-runtime writes the debug output to `stdout`, the web runtime to
-the debug console using `console.log`. Both implementation buffer the output until they encounter a newline character (10) in the output stream.
+the debug console using `console.log`. Both implementations buffer the output until they encounter a newline character (10) in the output stream.

 There may be future runtimes that ignore the debug output completely.

@@ -626,4 +634,4 @@ Pressing F9 opens a download dialog with a screenshot.
 ## Devkit mode

 Append `#devkit` to the web runtime url in order to switch to devkit mode. In devkit mode, standard web assembly modules
-are loaded bypassing the loader, removing all size restrictions. At the same time, the memory limit is increased to 1GB.
+are loaded bypassing the loader, removing all size restrictions. At the same time, the memory limit is increased to 1GB.
--- a/site/content/versions.md
+++ b/site/content/versions.md
@@ -2,9 +2,50 @@
 description = "Versions"
 +++

+### v0.3.0
+
+* [Web runtime](../v0.3.0)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.3.0/microw8-0.3.0-windows.zip)
+
+Changes:
+
+* add blitSprite and grabSprite API calls
+* add support for integer scaling up to 16x for printing text
+* fix incompatibility with sound devices only offering 16bit audio formats
+* add support for br_table instruction in packed carts
+
+### v0.2.2
+
+* [Web runtime](../v0.2.2)
+* [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-linux.tgz)
+* [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-macos.tgz)
+* [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.2/microw8-0.2.2-windows.zip)
+
+Changes:
+
+* call `start` function after loading cart if the cart exports one
+* fix `sndGes` having the wrong name and not being included in the auto imports
+* fix control codes 4-6 (change text output mode) being invoked when used as parameters in other control sequences
+* only open browser window once a cart was compiled sucessfully when running with `-b`
+
+### 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)
+* [Web runtime](../v0.2.0)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0/microw8-0.2.0-windows.zip)
@@ -22,7 +63,7 @@ Changes:

 ### v0.2.0-rc3

-* [Web runtime](v0.2.0-rc3)
+* [Web runtime](../v0.2.0-rc3)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc3/microw8-0.2.0-rc3-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc3/microw8-0.2.0-rc3-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc3/microw8-0.2.0-rc3-windows.zip)
@@ -40,7 +81,7 @@ Changes:

 ### v0.2.0-rc2

-* [Web runtime](v0.2.0-rc2)
+* [Web runtime](../v0.2.0-rc2)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc2/microw8-0.2.0-rc2-windows.zip)
@@ -51,7 +92,7 @@ Changes:

 ### v0.2.0-rc1

-* [Web runtime](v0.2.0-rc1)
+* [Web runtime](../v0.2.0-rc1)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.2.0-rc1/microw8-0.2.0-rc1-windows.zip)
@@ -67,7 +108,7 @@ Known issues:

 ### v0.1.2

-* [Web runtime](v0.1.2)
+* [Web runtime](../v0.1.2)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.2/microw8-0.1.2-windows.zip)
@@ -75,13 +116,13 @@ Known issues:
 Changes:

 * add option to `uw8 run` to run the cart in the browser using the web runtime
-* CurlyWas: implement `include` support
+*../ CurlyWas: implement `include` support
 * CurlyWas: implement support for constants
 * fix crash when trying to draw zero sized line

 ### v0.1.1

-* [Web runtime](v0.1.1)
+* [Web runtime](../v0.1.1)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.1/microw8-0.1.1-windows.zip)
@@ -90,16 +131,16 @@ Changes:

 * implement more robust file watcher
 * add basic video recording on F10 in web runtime
-* add screenshot on F9
+*../ add screenshot on F9
 * add watchdog to interrupt hanging update in native runtime
 * add devkit mode to web runtime
-* add unpack and compile commands to uw8
+*../ add unpack and compile commands to uw8
 * add support for table/element section in pack command
 * disable wayland support (caused missing window decorations in gnome)

 ### v0.1.0

-* [Web runtime](v0.1.0)
+* [Web runtime](../v0.1.0)
 * [Linux](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-linux.tgz)
 * [MacOS](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-macos.tgz)
 * [Windows](https://github.com/exoticorn/microw8/releases/download/v0.1.0/microw8-0.1.0-windows.zip)
--- a/site/static/v0.3.0/index.html
+++ b/site/static/v0.3.0/index.html
--- a/site/templates/index.html
+++ b/site/templates/index.html
@@ -4,7 +4,7 @@
        <section>
            <h1 class="text-center heading-text">A WebAssembly based fantasy console</h1>
        </section>
-        <a href="v0.2.2">
+        <a href="v0.3.0">
            <img class="demonstration-gif" style="width:640px;height:480px;image-rendering:pixelated" src="img/technotunnel.png"></img>
        </a>
    </div>
@@ -15,4 +15,4 @@
 {% endblock hero %}

 {% block footer %}
-{% endblock footer %}
+{% endblock footer %}
--- a/src/filewatcher.rs
+++ b/src/filewatcher.rs
@@ -16,16 +16,14 @@ pub struct FileWatcher {
 impl FileWatcher {
    pub fn new() -> Result<FileWatcher> {
        let (tx, rx) = mpsc::channel();
-        let debouncer = new_debouncer(Duration::from_millis(100), None, move |res| match res {
+        let debouncer = new_debouncer(Duration::from_millis(100), move |res| match res {
            Ok(events) => {
                for event in events {
                    let _ = tx.send(event);
                }
            }
-            Err(errs) => {
-                for err in errs {
-                    eprintln!("Error watching for file changes: {err}");
-                }
+            Err(err) => {
+                eprintln!("Error watching for file changes: {err}");
            }
        })?;
        Ok(FileWatcher {
--- a/src/run-web.html
+++ b/src/run-web.html
--- a/src/run_native.rs
+++ b/src/run_native.rs
@@ -2,12 +2,12 @@ use std::sync::{mpsc, Arc, Mutex};
 use std::time::Duration;
 use std::{thread, time::Instant};

-use anyhow::{anyhow, Result};
+use anyhow::{anyhow, bail, Result};
 use cpal::traits::*;
 use rubato::Resampler;
 use uw8_window::{Window, WindowConfig};
 use wasmtime::{
-    Engine, GlobalType, Memory, MemoryType, Module, Mutability, Store, TypedFunc, ValType,
+    Engine, Func, GlobalType, Memory, MemoryType, Module, Mutability, Store, TypedFunc, ValType,
 };

 pub struct MicroW8 {
@@ -27,6 +27,7 @@ struct UW8Instance {
    end_frame: TypedFunc<(), ()>,
    update: Option<TypedFunc<(), ()>>,
    start_time: Instant,
+    frame_counter: u32,
    watchdog: Arc<Mutex<UW8WatchDog>>,
    sound_tx: Option<mpsc::SyncSender<RegisterUpdate>>,
 }
@@ -90,7 +91,7 @@ impl super::Runtime for MicroW8 {
        let memory = wasmtime::Memory::new(&mut store, MemoryType::new(4, Some(4)))?;

        let mut linker = wasmtime::Linker::new(&self.engine);
-        linker.define("env", "memory", memory)?;
+        linker.define(&store, "env", "memory", memory)?;

        let loader_instance = linker.instantiate(&mut store, &self.loader_module)?;
        let load_uw8 = loader_instance.get_typed_func::<i32, i32>(&mut store, "load_uw8")?;
@@ -159,6 +160,7 @@ impl super::Runtime for MicroW8 {
            end_frame,
            update,
            start_time: Instant::now(),
+            frame_counter: 0,
            watchdog,
            sound_tx,
        });
@@ -181,20 +183,21 @@ impl super::Runtime for MicroW8 {
        if let Some(mut instance) = self.instance.take() {
            let time = (now - instance.start_time).as_millis() as i32;
            let next_frame = {
-                let frame = (time as u32 as u64 * 6 / 100) as u32;
-                let cur_offset = (time as u32).wrapping_sub((frame as u64 * 100 / 6) as u32);
-                let next_time =
-                    ((frame as u64 + 1) * 100 / 6 + cur_offset.max(1).min(4) as u64) as u32;
-                let offset = next_time.wrapping_sub(time as u32);
-                now + Duration::from_millis(offset as u64)
+                let offset = ((time as u32 as i64 * 6) % 100 - 50) / 6;
+                let max = now + Duration::from_millis(17);
+                let next_center = now + Duration::from_millis((16 - offset) as u64);
+                next_center.min(max)
            };

            {
                let mem = instance.memory.data_mut(&mut instance.store);
                mem[64..68].copy_from_slice(&time.to_le_bytes());
                mem[68..72].copy_from_slice(&input.gamepads);
+                mem[72..76].copy_from_slice(&instance.frame_counter.to_le_bytes());
            }

+            instance.frame_counter = instance.frame_counter.wrapping_add(1);
+
            instance.store.set_epoch_deadline(self.timeout as u64);
            if let Some(ref update) = instance.update {
                if let Err(err) = update.call(&mut instance.store, ()) {
@@ -257,15 +260,12 @@ fn add_native_functions(
        }
    })?;
    for i in 0..16 {
-        linker.define(
-            "env",
-            &format!("g_reserved{}", i),
-            wasmtime::Global::new(
-                &mut *store,
-                GlobalType::new(ValType::I32, Mutability::Const),
-                0.into(),
-            )?,
+        let global = wasmtime::Global::new(
+            &mut *store,
+            GlobalType::new(ValType::I32, Mutability::Const),
+            0.into(),
        )?;
+        linker.define(&store, "env", &format!("g_reserved{}", i), global)?;
    }

    Ok(())
@@ -278,14 +278,18 @@ fn instantiate_platform(
 ) -> Result<wasmtime::Instance> {
    let platform_instance = linker.instantiate(&mut *store, &platform_module)?;

-    for export in platform_instance.exports(&mut *store) {
-        linker.define(
-            "env",
-            export.name(),
-            export
-                .into_func()
-                .expect("platform surely only exports functions"),
-        )?;
+    let exports: Vec<(String, Func)> = platform_instance
+        .exports(&mut *store)
+        .map(|e| {
+            (
+                e.name().to_owned(),
+                e.into_func()
+                    .expect("platform surely only exports functions"),
+            )
+        })
+        .collect();
+    for (name, func) in exports {
+        linker.define(&store, "env", &name, func)?;
    }

    Ok(platform_instance)
@@ -312,7 +316,7 @@ fn init_sound(
    let memory = wasmtime::Memory::new(&mut store, MemoryType::new(4, Some(4)))?;

    let mut linker = wasmtime::Linker::new(engine);
-    linker.define("env", "memory", memory)?;
+    linker.define(&store, "env", "memory", memory)?;
    add_native_functions(&mut linker, &mut store)?;

    let platform_instance = instantiate_platform(&mut linker, &mut store, platform_module)?;
@@ -329,23 +333,37 @@ fn init_sound(
    let mut configs: Vec<_> = device
        .supported_output_configs()?
        .filter(|config| {
-            config.channels() == 2 && config.sample_format() == cpal::SampleFormat::F32
+            config.sample_format() == cpal::SampleFormat::F32
+                || config.sample_format() == cpal::SampleFormat::I16
        })
        .collect();
+
+    if configs.is_empty() {
+        eprintln!(
+            "No suitable audio output config found on device \"{}\", available configs:",
+            device.name()?
+        );
+        for config in device.supported_output_configs()? {
+            eprintln!("  {}ch {}", config.channels(), config.sample_format());
+        }
+        bail!("Failed to configure audio out");
+    }
+
    configs.sort_by_key(|config| {
        let rate = 44100
            .max(config.min_sample_rate().0)
            .min(config.max_sample_rate().0);
-        if rate >= 44100 {
+        let rate_prio = if rate >= 44100 {
            rate - 44100
        } else {
            (44100 - rate) * 1000
-        }
+        };
+        let format_prio = (config.sample_format() == cpal::SampleFormat::I16) as u32;
+        let channels_prio = (config.channels() != 2) as u32 * 16777216;
+        rate_prio + format_prio + channels_prio
    });
-    let config = configs
-        .into_iter()
-        .next()
-        .ok_or_else(|| anyhow!("Could not find float output config"))?;
+    let config = configs.into_iter().next().unwrap();
+
    let sample_rate = cpal::SampleRate(44100)
        .max(config.min_sample_rate())
        .min(config.max_sample_rate());
@@ -356,6 +374,8 @@ fn init_sound(
            cpal::BufferSize::Fixed(256.max(min).min(max))
        }
    };
+    let sample_format = config.sample_format();
+    let num_channels = config.channels();
    let config = cpal::StreamConfig {
        buffer_size,
        ..config.config()
@@ -375,8 +395,8 @@ fn init_sound(
        None
    } else {
        let rs = rubato::FftFixedIn::new(44100, sample_rate, 128, 1, 2)?;
-        let input_buffers = rs.input_buffer_allocate();
-        let output_buffers = rs.output_buffer_allocate();
+        let input_buffers = rs.input_buffer_allocate(true);
+        let output_buffers = rs.output_buffer_allocate(true);
        Some(Resampler {
            resampler: rs,
            input_buffers,
@@ -388,96 +408,220 @@ fn init_sound(
    let mut sample_index = 0;
    let mut pending_updates: Vec<RegisterUpdate> = Vec::with_capacity(30);
    let mut current_time = 0;
-    let stream = device.build_output_stream(
-        &config,
-        move |mut outer_buffer: &mut [f32], _| {
-            let mut first_update = true;
-            while let Ok(update) = rx.try_recv() {
-                if first_update {
-                    current_time += update.time.wrapping_sub(current_time) / 8;
-                    first_update = false;
-                }
-                pending_updates.push(update);
+
+    let mut callback = move |mut outer_buffer: &mut [f32]| {
+        let mut first_update = true;
+        while let Ok(update) = rx.try_recv() {
+            if first_update {
+                current_time += update.time.wrapping_sub(current_time) / 8;
+                first_update = false;
+            }
+            pending_updates.push(update);
+        }
+
+        while !outer_buffer.is_empty() {
+            store.set_epoch_deadline(30);
+            while pending_updates
+                .first()
+                .into_iter()
+                .any(|u| u.time.wrapping_sub(current_time) <= 0)
+            {
+                let update = pending_updates.remove(0);
+                memory.write(&mut store, 80, &update.data).unwrap();
            }

-            while !outer_buffer.is_empty() {
-                store.set_epoch_deadline(30);
-                while pending_updates
-                    .first()
-                    .into_iter()
-                    .any(|u| u.time.wrapping_sub(current_time) <= 0)
-                {
-                    let update = pending_updates.remove(0);
-                    memory.write(&mut store, 80, &update.data).unwrap();
-                }
+            let duration = if let Some(update) = pending_updates.first() {
+                ((update.time.wrapping_sub(current_time) as usize) * sample_rate + 999) / 1000
+            } else {
+                outer_buffer.len()
+            };
+            let step_size = (duration.max(64) * 2).min(outer_buffer.len());

-                let duration = if let Some(update) = pending_updates.first() {
-                    ((update.time.wrapping_sub(current_time) as usize) * sample_rate + 999) / 1000
+            let mut buffer = &mut outer_buffer[..step_size];
+
+            {
+                let mem = memory.data_mut(&mut store);
+                mem[64..68].copy_from_slice(&current_time.to_le_bytes());
+            }
+
+            fn clamp_sample(s: f32) -> f32 {
+                if s.is_nan() {
+                    0.0
                } else {
-                    outer_buffer.len()
-                };
-                let step_size = (duration.max(64) * 2).min(outer_buffer.len());
-
-                let mut buffer = &mut outer_buffer[..step_size];
-
-                {
-                    let mem = memory.data_mut(&mut store);
-                    mem[64..68].copy_from_slice(&current_time.to_le_bytes());
+                    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]
-                            .len()
-                            .saturating_sub(resampler.output_index)
-                            .min(buffer.len() / 2);
-                        if copy_size == 0 {
-                            resampler.input_buffers[0].clear();
-                            resampler.input_buffers[1].clear();
-                            for _ in 0..resampler.resampler.input_frames_next() {
-                                resampler.input_buffers[0]
-                                    .push(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));
-                                sample_index = sample_index.wrapping_add(2);
-                            }
-
-                            resampler
-                                .resampler
-                                .process_into_buffer(
-                                    &resampler.input_buffers,
-                                    &mut resampler.output_buffers,
-                                    None,
-                                )
-                                .unwrap();
-                            resampler.output_index = 0;
-                        } else {
-                            for i in 0..copy_size {
-                                buffer[i * 2] =
-                                    resampler.output_buffers[0][resampler.output_index + i];
-                                buffer[i * 2 + 1] =
-                                    resampler.output_buffers[1][resampler.output_index + i];
-                            }
-                            resampler.output_index += copy_size;
-                            buffer = &mut buffer[copy_size * 2..];
+            if let Some(ref mut resampler) = resampler {
+                while !buffer.is_empty() {
+                    let copy_size = resampler.output_buffers[0]
+                        .len()
+                        .saturating_sub(resampler.output_index)
+                        .min(buffer.len() / 2);
+                    if copy_size == 0 {
+                        resampler.input_buffers[0].clear();
+                        resampler.input_buffers[1].clear();
+                        for _ in 0..resampler.resampler.input_frames_next() {
+                            resampler.input_buffers[0].push(clamp_sample(
+                                snd.call(&mut store, (sample_index,)).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);
                        }
-                    }
-                } else {
-                    for v in buffer {
-                        *v = snd.call(&mut store, (sample_index,)).unwrap_or(0.0);
-                        sample_index = sample_index.wrapping_add(1);
+
+                        resampler
+                            .resampler
+                            .process_into_buffer(
+                                &resampler.input_buffers,
+                                &mut resampler.output_buffers,
+                                None,
+                            )
+                            .unwrap();
+                        resampler.output_index = 0;
+                    } else {
+                        for i in 0..copy_size {
+                            buffer[i * 2] = resampler.output_buffers[0][resampler.output_index + i];
+                            buffer[i * 2 + 1] =
+                                resampler.output_buffers[1][resampler.output_index + i];
+                        }
+                        resampler.output_index += copy_size;
+                        buffer = &mut buffer[copy_size * 2..];
                    }
                }
-
-                outer_buffer = &mut outer_buffer[step_size..];
-                current_time =
-                    current_time.wrapping_add((step_size * 500 / sample_rate).max(1) as i32);
+            } else {
+                for v in buffer {
+                    *v = clamp_sample(snd.call(&mut store, (sample_index,)).unwrap_or(0.0));
+                    sample_index = sample_index.wrapping_add(1);
+                }
            }
-        },
-        move |err| {
-            dbg!(err);
-        },
-    )?;
+
+            outer_buffer = &mut outer_buffer[step_size..];
+            current_time = current_time.wrapping_add((step_size * 500 / sample_rate).max(1) as i32);
+        }
+    };
+
+    fn f32_to_i16<F>(mut buffer: &mut [i16], callback: &mut F)
+    where
+        F: FnMut(&mut [f32]),
+    {
+        let mut float_buffer = [0f32; 256];
+
+        while !buffer.is_empty() {
+            let step_size = buffer.len().min(float_buffer.len());
+            let step_buffer = &mut float_buffer[..step_size];
+            callback(step_buffer);
+            for (dest, src) in buffer.iter_mut().take(step_size).zip(step_buffer.iter()) {
+                *dest = (src.max(-1.0).min(1.0) * 32767.0) as i16;
+            }
+            buffer = &mut buffer[step_size..];
+        }
+    }
+
+    fn stereo_to_mono<F>(mut buffer: &mut [f32], callback: &mut F)
+    where
+        F: FnMut(&mut [f32]),
+    {
+        let mut in_buffer = [0f32; 256];
+
+        while !buffer.is_empty() {
+            let step_size = buffer.len().min(in_buffer.len() / 2);
+            let step_buffer = &mut in_buffer[..step_size * 2];
+            callback(step_buffer);
+            for (index, dest) in buffer.iter_mut().take(step_size).enumerate() {
+                *dest = (step_buffer[index * 2] + step_buffer[index * 2 + 1]) * 0.5;
+            }
+            buffer = &mut buffer[step_size..];
+        }
+    }
+
+    fn stereo_to_surround<F>(mut buffer: &mut [f32], num_channels: usize, callback: &mut F)
+    where
+        F: FnMut(&mut [f32]),
+    {
+        let mut in_buffer = [0f32; 256];
+        buffer.fill(0.);
+
+        while !buffer.is_empty() {
+            let step_size = (buffer.len() / num_channels).min(in_buffer.len() / 2);
+            let step_buffer = &mut in_buffer[..step_size * 2];
+            callback(step_buffer);
+            for index in 0..step_size {
+                buffer[index * num_channels + 0] = step_buffer[index * 2 + 0];
+                buffer[index * num_channels + 1] = step_buffer[index * 2 + 1];
+            }
+            buffer = &mut buffer[step_size * num_channels..];
+        }
+    }
+
+    let stream = if sample_format == cpal::SampleFormat::F32 {
+        if num_channels == 2 {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [f32], _| callback(buffer),
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        } else if num_channels == 1 {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [f32], _| stereo_to_mono(buffer, &mut callback),
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        } else {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [f32], _| {
+                    stereo_to_surround(buffer, num_channels as usize, &mut callback)
+                },
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        }
+    } else {
+        if num_channels == 2 {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [i16], _| f32_to_i16(buffer, &mut callback),
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        } else if num_channels == 1 {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [i16], _| {
+                    f32_to_i16(buffer, &mut |b| stereo_to_mono(b, &mut callback))
+                },
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        } else {
+            device.build_output_stream(
+                &config,
+                move |buffer: &mut [i16], _| {
+                    f32_to_i16(buffer, &mut |b| {
+                        stereo_to_surround(b, num_channels as usize, &mut callback)
+                    })
+                },
+                move |err| {
+                    dbg!(err);
+                },
+                None,
+            )?
+        }
+    };

    Ok(Uw8Sound { stream, tx })
 }
--- a/todo.txt
+++ b/todo.txt
@@ -0,0 +1 @@
+* add support for 16bit sound (not just float)
--- a/uw8-tool/Cargo.lock
+++ b/uw8-tool/Cargo.lock
@@ -4,21 +4,27 @@ version = 3

 [[package]]
 name = "anyhow"
-version = "1.0.52"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84450d0b4a8bd1ba4144ce8ce718fbc5d071358b1e5384bace6536b3d1f2d5b3"
+checksum = "0952808a6c2afd1aa8947271f3a60f1a6763c7b912d210184c5149b5cf147247"

 [[package]]
 name = "autocfg"
-version = "1.0.1"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+checksum = "f1fdabc7756949593fe60f30ec81974b613357de856987752631dea1e3394c80"
+
+[[package]]
+name = "bitflags"
+version = "2.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"

 [[package]]
 name = "cc"
-version = "1.0.72"
+version = "1.0.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22a9137b95ea06864e018375b72adfb7db6e6f68cfc8df5a04d00288050485ee"
+checksum = "2678b2e3449475e95b0aa6f9b506a28e61b3dc8996592b983695e8ebb58a8b41"

 [[package]]
 name = "cdivsufsort"
@@ -30,39 +36,42 @@ dependencies = [
 "sacabase",
 ]

-[[package]]
-name = "cfg-if"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
-
 [[package]]
 name = "crossbeam-channel"
-version = "0.5.1"
+version = "0.5.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06ed27e177f16d65f0f0c22a213e17c696ace5dd64b14258b52f9417ccb52db4"
+checksum = "ab3db02a9c5b5121e1e42fbdb1aeb65f5e02624cc58c43f2884c6ccac0b82f95"
 dependencies = [
- "cfg-if",
 "crossbeam-utils",
 ]

 [[package]]
 name = "crossbeam-utils"
-version = "0.8.5"
+version = "0.8.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d82cfc11ce7f2c3faef78d8a684447b40d503d9681acebed6cb728d45940c4db"
-dependencies = [
- "cfg-if",
- "lazy_static",
-]
+checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"

 [[package]]
-name = "form_urlencoded"
-version = "1.1.0"
+name = "equivalent"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9c384f161156f5260c24a097c56119f9be8c798586aecc13afbcbe7b7e26bf8"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
+[[package]]
+name = "fallible-iterator"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4443176a9f2c162692bd3d352d745ef9413eec5782a80d8fd6f8a1ac692a07f7"
+
+[[package]]
+name = "gimli"
+version = "0.26.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "22030e2c5a68ec659fde1e949a745124b48e6fa8b045b7ed5bd1fe4ccc5c4e5d"
 dependencies = [
- "percent-encoding",
+ "fallible-iterator",
+ "indexmap 1.9.3",
+ "stable_deref_trait",
 ]

 [[package]]
@@ -71,6 +80,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"

+[[package]]
+name = "hashbrown"
+version = "0.14.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+
 [[package]]
 name = "heck"
 version = "0.3.3"
@@ -87,31 +102,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25a2bc672d1148e28034f176e01fffebb08b35768468cc954630da77a1449005"

 [[package]]
-name = "idna"
-version = "0.3.0"
+name = "indexmap"
+version = "1.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e14ddfc70884202db2244c223200c204c2bda1bc6e0998d11b5e024d657209e6"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
- "unicode-bidi",
- "unicode-normalization",
+ "autocfg",
+ "hashbrown 0.12.3",
 ]

 [[package]]
 name = "indexmap"
-version = "1.9.2"
+version = "2.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885e79c1fc4b10f0e172c475f458b7f7b93061064d98c3293e98c5ba0c8b399"
+checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
- "autocfg",
- "hashbrown",
+ "equivalent",
+ "hashbrown 0.14.3",
 ]

-[[package]]
-name = "lazy_static"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-
 [[package]]
 name = "leb128"
 version = "0.2.5"
@@ -126,46 +135,36 @@ checksum = "478ee9e62aaeaf5b140bd4138753d1f109765488581444218d3ddda43234f3e8"

 [[package]]
 name = "libc"
-version = "0.2.112"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b03d17f364a3a042d5e5d46b053bbbf82c92c9430c592dd4c064dc6ee997125"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"

 [[package]]
 name = "log"
-version = "0.4.14"
+version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
-dependencies = [
- "cfg-if",
-]
+checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"

 [[package]]
 name = "num-traits"
-version = "0.2.14"
+version = "0.2.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+checksum = "da0df0e5185db44f69b44f26786fe401b6c293d1907744beaa7fa62b2e5a517a"
 dependencies = [
 "autocfg",
 ]

 [[package]]
 name = "pbr"
-version = "1.0.4"
+version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff5751d87f7c00ae6403eb1fcbba229b9c76c9a30de8c1cf87182177b168cea2"
+checksum = "ed5827dfa0d69b6c92493d6c38e633bbaa5937c153d0d7c28bf12313f8c6d514"
 dependencies = [
 "crossbeam-channel",
 "libc",
- "time",
 "winapi",
 ]

-[[package]]
-name = "percent-encoding"
-version = "2.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "478c572c3d73181ff3c2539045f6eb99e5491218eae919370993b890cdbdd98e"
-
 [[package]]
 name = "pico-args"
 version = "0.5.0"
@@ -174,18 +173,18 @@ checksum = "5be167a7af36ee22fe3115051bc51f6e6c7054c9348e28deb4f49bd6f705a315"

 [[package]]
 name = "proc-macro2"
-version = "1.0.36"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
+checksum = "e835ff2298f5721608eb1a980ecaee1aef2c132bf95ecc026a11b7bf3c01c02e"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]

 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "291ec9ab5efd934aaf503a6466c5d5251535d108ee747472c3977cc5acc868ef"
 dependencies = [
 "proc-macro2",
 ]
@@ -200,88 +199,70 @@ dependencies = [
 ]

 [[package]]
-name = "syn"
-version = "1.0.84"
+name = "semver"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ecb2e6da8ee5eb9a61068762a32fa9619cc591ceb055b3687f4cd4051ec2e06b"
+checksum = "92d43fe69e652f3df9bdc2b85b2854a0825b86e4fb76bc44d945137d053639ca"
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3"
+
+[[package]]
+name = "syn"
+version = "1.0.109"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
 dependencies = [
 "proc-macro2",
 "quote",
- "unicode-xid",
+ "unicode-ident",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "44cfb93f38070beee36b3fef7d4f5a16f27751d94b187b666a5cc5e9b0d30687"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
 ]

 [[package]]
 name = "thiserror"
-version = "1.0.38"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a9cd18aa97d5c45c6603caea1da6628790b37f7a34b6ca89522331c5180fed0"
+checksum = "03468839009160513471e86a034bb2c5c0e4baae3b43f79ffc55c4a5427b3297"
 dependencies = [
 "thiserror-impl",
 ]

 [[package]]
 name = "thiserror-impl"
-version = "1.0.38"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fb327af4685e4d03fa8cbcf1716380da910eeb2bb8be417e7f9fd3fb164f36f"
+checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
 dependencies = [
 "proc-macro2",
 "quote",
- "syn",
+ "syn 2.0.58",
 ]

 [[package]]
-name = "time"
-version = "0.1.44"
+name = "unicode-ident"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
-dependencies = [
- "libc",
- "wasi",
- "winapi",
-]
-
-[[package]]
-name = "tinyvec"
-version = "1.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87cc5ceb3875bb20c2890005a4e226a4651264a5c75edb2421b52861a0a0cb50"
-dependencies = [
- "tinyvec_macros",
-]
-
-[[package]]
-name = "tinyvec_macros"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cda74da7e1a664f795bb1f8a87ec406fb89a02522cf6e50620d016add6dbbf5c"
-
-[[package]]
-name = "unicode-bidi"
-version = "0.3.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d54675592c1dbefd78cbd98db9bacd89886e1ca50692a0692baefffdeb92dd58"
-
-[[package]]
-name = "unicode-normalization"
-version = "0.1.22"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c5713f0fc4b5db668a2ac63cdb7bb4469d8c9fed047b1d0292cc7b0ce2ba921"
-dependencies = [
- "tinyvec",
-]
+checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"

 [[package]]
 name = "unicode-segmentation"
-version = "1.8.0"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
-
-[[package]]
-name = "unicode-xid"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
+checksum = "d4c87d22b6e3f4a18d4d40ef354e97c90fcb14dd91d7dc0aa9d8a1172ebf7202"

 [[package]]
 name = "upkr"
@@ -294,17 +275,6 @@ dependencies = [
 "thiserror",
 ]

-[[package]]
-name = "url"
-version = "2.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0d68c799ae75762b8c3fe375feb6600ef5602c883c5d21eb51c09f22b83c4643"
-dependencies = [
- "form_urlencoded",
- "idna",
- "percent-encoding",
-]
-
 [[package]]
 name = "uw8-tool"
 version = "0.1.0"
@@ -314,22 +284,24 @@ dependencies = [
 "pico-args",
 "upkr",
 "walrus",
- "wasm-encoder",
- "wasmparser 0.99.0",
+ "wasm-encoder 0.201.0",
+ "wasmparser 0.201.0",
 ]

 [[package]]
 name = "walrus"
-version = "0.19.0"
+version = "0.20.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4eb08e48cde54c05f363d984bb54ce374f49e242def9468d2e1b6c2372d291f8"
+checksum = "2c03529cd0c4400a2449f640d2f27cd1b48c3065226d15e26d98e4429ab0adb7"
 dependencies = [
 "anyhow",
+ "gimli",
 "id-arena",
 "leb128",
 "log",
 "walrus-macro",
- "wasmparser 0.77.0",
+ "wasm-encoder 0.29.0",
+ "wasmparser 0.80.2",
 ]

 [[package]]
@@ -341,38 +313,42 @@ dependencies = [
 "heck",
 "proc-macro2",
 "quote",
- "syn",
+ "syn 1.0.109",
 ]

 [[package]]
-name = "wasi"
-version = "0.10.0+wasi-snapshot-preview1"
+name = "wasm-encoder"
+version = "0.29.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+checksum = "18c41dbd92eaebf3612a39be316540b8377c871cb9bde6b064af962984912881"
+dependencies = [
+ "leb128",
+]

 [[package]]
 name = "wasm-encoder"
-version = "0.22.0"
+version = "0.201.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef126be0e14bdf355ac1a8b41afc89195289e5c7179f80118e3abddb472f0810"
+checksum = "b9c7d2731df60006819b013f64ccc2019691deccf6e11a1804bc850cd6748f1a"
 dependencies = [
 "leb128",
 ]

 [[package]]
 name = "wasmparser"
-version = "0.77.0"
+version = "0.80.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b35c86d22e720a07d954ebbed772d01180501afe7d03d464f413bb5f8914a8d6"
+checksum = "449167e2832691a1bff24cde28d2804e90e09586a448c8e76984792c44334a6b"

 [[package]]
 name = "wasmparser"
-version = "0.99.0"
+version = "0.201.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ef3b717afc67f848f412d4f02c127dd3e35a0eecd58c684580414df4fde01d3"
+checksum = "84e5df6dba6c0d7fafc63a450f1738451ed7a0b52295d83e868218fa286bf708"
 dependencies = [
- "indexmap",
- "url",
+ "bitflags",
+ "indexmap 2.2.6",
+ "semver",
 ]

 [[package]]
--- a/uw8-tool/Cargo.toml
+++ b/uw8-tool/Cargo.toml
@@ -6,10 +6,10 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-wasmparser = "0.99"
-wasm-encoder = "0.22"
-walrus = "0.19"
+wasmparser = "0.201"
+wasm-encoder = "0.201"
+walrus = { version = "0.20.3", default-features = false }
 anyhow = "1"
 pico-args = "0.5"
 upkr = { git = "https://github.com/exoticorn/upkr.git", rev = "080db40d0088bbee2bdf3c5c75288ac7853d6b7a" }
-pbr = "1"
+pbr = "1"
--- a/uw8-tool/src/filter_exports.rs
+++ b/uw8-tool/src/filter_exports.rs
@@ -8,7 +8,7 @@ pub fn filter_exports(in_path: &Path, out_path: &Path) -> Result<()> {
        .exports
        .iter()
        .filter_map(|export| match export.name.as_str() {
-            "upd" | "snd" | "start" => None,
+            "start" | "upd" | "snd" => None,
            _ => Some(export.id()),
        })
        .collect();
--- a/uw8-tool/src/pack.rs
+++ b/uw8-tool/src/pack.rs
@@ -490,7 +490,6 @@ impl<'a> ParsedModule<'a> {
                element_section.active(
                    None,
                    &wasm_encoder::ConstExpr::i32_const(element.start_index as i32),
-                    ValType::FuncRef,
                    wasm_encoder::Elements::Functions(&functions),
                );
            }
@@ -536,15 +535,18 @@ fn copy_section(module: &mut wasm_encoder::Module, data: &[u8]) -> Result<()> {
 fn read_type_section(reader: TypeSectionReader) -> Result<Vec<base_module::FunctionType>> {
    let mut function_types = vec![];

-    for type_def in reader {
-        match type_def? {
-            wasmparser::Type::Func(fnc) => {
-                if fnc.results().len() > 1 {
-                    bail!("Multi-value not supported");
+    for rec_group in reader {
+        for sub_type in rec_group?.into_types() {
+            match sub_type.composite_type {
+                wasmparser::CompositeType::Func(fnc) => {
+                    if fnc.results().len() > 1 {
+                        bail!("Multi-value not supported");
+                    }
+                    let params = to_val_type_vec(fnc.params())?;
+                    let result = to_val_type_vec(fnc.results())?.into_iter().next();
+                    function_types.push(FunctionType { params, result });
                }
-                let params = to_val_type_vec(fnc.params())?;
-                let result = to_val_type_vec(fnc.results())?.into_iter().next();
-                function_types.push(FunctionType { params, result });
+                _ => bail!("Only function types are supported"),
            }
        }
    }
@@ -557,8 +559,8 @@ fn validate_table_section(reader: TableSectionReader) -> Result<()> {
        bail!("Only up to one table supported");
    }

-    let type_ = reader.into_iter().next().unwrap()?;
-    if type_.element_type != wasmparser::ValType::FuncRef {
+    let table = reader.into_iter().next().unwrap()?;
+    if !table.ty.element_type.is_func_ref() {
        bail!("Only one funcref table is supported");
    }

@@ -647,9 +649,12 @@ impl Element {
            wasmparser::ElementItems::Functions(funcs_reader) => {
                let start_index = if let wasmparser::ElementKind::Active {
                    offset_expr,
-                    table_index: 0,
+                    table_index,
                } = element.kind
                {
+                    if table_index.map(|i| i > 0).unwrap_or(false) {
+                        bail!("Only function table with index 0 is supported");
+                    }
                    let mut init_reader = offset_expr.get_operators_reader();
                    if let wasmparser::Operator::I32Const { value: start_index } =
                        init_reader.read()?
--- a/uw8-window/Cargo.lock
+++ b/uw8-window/Cargo.lock
--- a/uw8-window/Cargo.toml
+++ b/uw8-window/Cargo.toml
@@ -6,13 +6,13 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

 [dependencies]
-winit = "0.27.5"
-env_logger = "0.10"
+winit = "0.29.15"
+env_logger = "0.11.3"
 log = "0.4"
 pico-args = "0.5"
-wgpu = "0.15"
-pollster = "0.2.5"
-bytemuck = { version = "1.13", features = [ "derive" ] }
+wgpu = "0.19.3"
+pollster = "0.3.0"
+bytemuck = { version = "1.15", features = [ "derive" ] }
 anyhow = "1"
-minifb = { version = "0.23.0", default-features = false, features = ["x11"] }
+minifb = { version = "0.25.0", default-features = false, features = ["x11"] }
 winapi = { version = "0.3.9", features = [ "timeapi" ] }
--- a/uw8-window/src/gpu/fast_crt.wgsl
+++ b/uw8-window/src/gpu/fast_crt.wgsl
@@ -30,8 +30,8 @@ fn row_factor(offset: f32) -> f32 {
 }

 fn col_factor(offset: f32) -> f32 {
-    let offset = max(0.0, abs(offset) - 0.4);
-    return 1.0 / (1.0 + offset * offset * 16.0);
+    let o = max(0.0, abs(offset) - 0.4);
+    return 1.0 / (1.0 + o * o * 16.0);
 }

 fn sample_screen(tex_coords: vec2<f32>) -> vec4<f32> {
--- a/uw8-window/src/gpu/mod.rs
+++ b/uw8-window/src/gpu/mod.rs
@@ -1,16 +1,16 @@
 use crate::{Input, WindowConfig, WindowImpl};
 use anyhow::{anyhow, Result};
-use std::{num::NonZeroU32, time::Instant};
+use std::{sync::Arc, time::Instant};

 use winit::{
    dpi::PhysicalSize,
-    event::{Event, VirtualKeyCode, WindowEvent},
+    event::{Event, WindowEvent},
    event_loop::{ControlFlow, EventLoop},
+    keyboard::{Key, KeyCode, NamedKey, PhysicalKey},
+    platform::pump_events::{EventLoopExtPumpEvents, PumpStatus},
    window::{Fullscreen, WindowBuilder},
 };

-use winit::platform::run_return::EventLoopExtRunReturn;
-
 mod crt;
 mod fast_crt;
 mod square;
@@ -21,7 +21,7 @@ use square::SquareFilter;

 pub struct Window {
    _instance: wgpu::Instance,
-    surface: wgpu::Surface,
+    surface: wgpu::Surface<'static>,
    _adapter: wgpu::Adapter,
    device: wgpu::Device,
    queue: wgpu::Queue,
@@ -29,7 +29,7 @@ pub struct Window {
    surface_config: wgpu::SurfaceConfiguration,
    filter: Box<dyn Filter>,
    event_loop: EventLoop<()>,
-    window: winit::window::Window,
+    window: Arc<winit::window::Window>,
    gamepads: [u8; 4],
    next_frame: Instant,
    is_fullscreen: bool,
@@ -39,9 +39,12 @@ pub struct Window {
 impl Window {
    pub fn new(window_config: WindowConfig) -> Result<Window> {
        async fn create(window_config: WindowConfig) -> Result<Window> {
-            let event_loop = EventLoop::new();
+            let event_loop = EventLoop::new()?;
            let window = WindowBuilder::new()
-                .with_inner_size(PhysicalSize::new(640u32, 480))
+                .with_inner_size(PhysicalSize::new(
+                    (320. * window_config.scale).round() as u32,
+                    (240. * window_config.scale).round() as u32,
+                ))
                .with_min_inner_size(PhysicalSize::new(320u32, 240))
                .with_title("MicroW8")
                .with_fullscreen(if window_config.fullscreen {
@@ -53,8 +56,10 @@ impl Window {

            window.set_cursor_visible(false);

+            let window = Arc::new(window);
+
            let instance = wgpu::Instance::new(Default::default());
-            let surface = unsafe { instance.create_surface(&window) }?;
+            let surface = instance.create_surface(window.clone())?;
            let adapter = instance
                .request_adapter(&wgpu::RequestAdapterOptions {
                    power_preference: wgpu::PowerPreference::LowPower,
@@ -72,7 +77,13 @@ impl Window {

            let surface_config = wgpu::SurfaceConfiguration {
                present_mode: wgpu::PresentMode::AutoNoVsync,
-                ..surface.get_default_config(&adapter, window.inner_size().width, window.inner_size().height).expect("Surface incompatible with adapter")
+                ..surface
+                    .get_default_config(
+                        &adapter,
+                        window.inner_size().width,
+                        window.inner_size().height,
+                    )
+                    .expect("Surface incompatible with adapter")
            };

            let filter: Box<dyn Filter> = create_filter(
@@ -110,88 +121,93 @@ impl Window {
 impl WindowImpl for Window {
    fn begin_frame(&mut self) -> Input {
        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) => {
-                        self.surface_config.width = new_size.width;
-                        self.surface_config.height = new_size.height;
-                        self.surface.configure(&self.device, &self.surface_config);
-                        self.filter.resize(&self.queue, new_size);
-                    }
-                    WindowEvent::CloseRequested => {
-                        self.is_open = false;
-                        *control_flow = ControlFlow::Exit;
-                    }
-                    WindowEvent::KeyboardInput { input, .. } => {
-                        fn gamepad_button(input: &winit::event::KeyboardInput) -> u8 {
-                            match input.scancode {
-                                44 => 16,
-                                45 => 32,
-                                30 => 64,
-                                31 => 128,
-                                _ => match input.virtual_keycode {
-                                    Some(VirtualKeyCode::Up) => 1,
-                                    Some(VirtualKeyCode::Down) => 2,
-                                    Some(VirtualKeyCode::Left) => 4,
-                                    Some(VirtualKeyCode::Right) => 8,
-                                    _ => 0,
-                                },
-                            }
+        self.event_loop
+            .set_control_flow(ControlFlow::WaitUntil(self.next_frame));
+        while self.is_open {
+            let timeout = self.next_frame.saturating_duration_since(Instant::now());
+            let status = self.event_loop.pump_events(Some(timeout), |event, elwt| {
+                let mut new_filter = None;
+                match event {
+                    Event::WindowEvent { event, .. } => match event {
+                        WindowEvent::Resized(new_size) => {
+                            self.surface_config.width = new_size.width;
+                            self.surface_config.height = new_size.height;
+                            self.surface.configure(&self.device, &self.surface_config);
+                            self.filter.resize(&self.queue, new_size);
                        }
-                        if input.state == winit::event::ElementState::Pressed {
-                            match input.virtual_keycode {
-                                Some(VirtualKeyCode::Escape) => {
-                                    self.is_open = false;
-                                    *control_flow = ControlFlow::Exit;
+                        WindowEvent::CloseRequested => {
+                            elwt.exit();
+                        }
+                        WindowEvent::KeyboardInput { event, .. } => {
+                            fn gamepad_button(input: &winit::event::KeyEvent) -> u8 {
+                                match input.physical_key {
+                                    PhysicalKey::Code(KeyCode::KeyZ) => 16,
+                                    PhysicalKey::Code(KeyCode::KeyX) => 32,
+                                    PhysicalKey::Code(KeyCode::KeyA) => 64,
+                                    PhysicalKey::Code(KeyCode::KeyS) => 128,
+                                    _ => match input.logical_key {
+                                        Key::Named(NamedKey::ArrowUp) => 1,
+                                        Key::Named(NamedKey::ArrowDown) => 2,
+                                        Key::Named(NamedKey::ArrowLeft) => 4,
+                                        Key::Named(NamedKey::ArrowRight) => 8,
+                                        _ => 0,
+                                    },
                                }
-                                Some(VirtualKeyCode::F) => {
-                                    let fullscreen = if self.window.fullscreen().is_some() {
-                                        None
-                                    } else {
-                                        Some(Fullscreen::Borderless(None))
-                                    };
-                                    self.is_fullscreen = fullscreen.is_some();
-                                    self.window.set_fullscreen(fullscreen);
-                                }
-                                Some(VirtualKeyCode::R) => reset = true,
-                                Some(VirtualKeyCode::Key1) => new_filter = Some(1),
-                                Some(VirtualKeyCode::Key2) => new_filter = Some(2),
-                                Some(VirtualKeyCode::Key3) => new_filter = Some(3),
-                                Some(VirtualKeyCode::Key4) => new_filter = Some(4),
-                                Some(VirtualKeyCode::Key5) => new_filter = Some(5),
-                                _ => (),
                            }
+                            if event.state == winit::event::ElementState::Pressed {
+                                match event.logical_key {
+                                    Key::Named(NamedKey::Escape) => {
+                                        elwt.exit();
+                                    }
+                                    Key::Character(ref c) => match c.as_str() {
+                                        "f" => {
+                                            let fullscreen = if self.window.fullscreen().is_some() {
+                                                None
+                                            } else {
+                                                Some(Fullscreen::Borderless(None))
+                                            };
+                                            self.is_fullscreen = fullscreen.is_some();
+                                            self.window.set_fullscreen(fullscreen);
+                                        }
+                                        "r" => reset = true,
+                                        "1" => new_filter = Some(1),
+                                        "2" => new_filter = Some(2),
+                                        "3" => new_filter = Some(3),
+                                        "4" => new_filter = Some(4),
+                                        "5" => new_filter = Some(5),
+                                        _ => (),
+                                    },
+                                    _ => (),
+                                }

-                            self.gamepads[0] |= gamepad_button(&input);
-                        } else {
-                            self.gamepads[0] &= !gamepad_button(&input);
+                                self.gamepads[0] |= gamepad_button(&event);
+                            } else {
+                                self.gamepads[0] &= !gamepad_button(&event);
+                            }
                        }
-                    }
+                        _ => (),
+                    },
                    _ => (),
-                },
-                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
-                    }
                }
+                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,
+                    );
+                }
+            });
+            match status {
+                PumpStatus::Exit(_) => self.is_open = false,
                _ => (),
            }
-            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,
-                );
+
+            if Instant::now() >= self.next_frame {
+                break;
            }
-        });
+        }
        Input {
            gamepads: self.gamepads,
            reset,
@@ -227,10 +243,12 @@ impl WindowImpl for Window {
                            b: 0.0,
                            a: 1.0,
                        }),
-                        store: true,
+                        store: wgpu::StoreOp::Store,
                    },
                })],
                depth_stencil_attachment: None,
+                timestamp_writes: None,
+                occlusion_query_set: None,
            });

            self.filter.render(&mut render_pass);
@@ -354,7 +372,7 @@ impl PaletteScreenMode {
            format: wgpu::TextureFormat::R8Uint,
            usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
            label: None,
-            view_formats: &[]
+            view_formats: &[],
        });

        let palette_texture = device.create_texture(&wgpu::TextureDescriptor {
@@ -369,7 +387,7 @@ impl PaletteScreenMode {
            format: wgpu::TextureFormat::Rgba8UnormSrgb,
            usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::COPY_DST,
            label: None,
-            view_formats: &[]
+            view_formats: &[],
        });

        let screen_texture = device.create_texture(&wgpu::TextureDescriptor {
@@ -384,7 +402,7 @@ impl PaletteScreenMode {
            format: wgpu::TextureFormat::Rgba8UnormSrgb,
            usage: wgpu::TextureUsages::TEXTURE_BINDING | wgpu::TextureUsages::RENDER_ATTACHMENT,
            label: None,
-            view_formats: &[]
+            view_formats: &[],
        });

        let framebuffer_texture_view =
@@ -491,7 +509,7 @@ impl PaletteScreenMode {
            &bytemuck::cast_slice(pixels),
            wgpu::ImageDataLayout {
                offset: 0,
-                bytes_per_row: NonZeroU32::new(320),
+                bytes_per_row: Some(320),
                rows_per_image: None,
            },
            wgpu::Extent3d {
@@ -513,7 +531,7 @@ impl PaletteScreenMode {
            &bytemuck::cast_slice(palette),
            wgpu::ImageDataLayout {
                offset: 0,
-                bytes_per_row: NonZeroU32::new(256 * 4),
+                bytes_per_row: Some(256 * 4),
                rows_per_image: None,
            },
            wgpu::Extent3d {
@@ -532,10 +550,12 @@ impl PaletteScreenMode {
                resolve_target: None,
                ops: wgpu::Operations {
                    load: wgpu::LoadOp::Load,
-                    store: true,
+                    store: wgpu::StoreOp::Store,
                },
            })],
            depth_stencil_attachment: None,
+            timestamp_writes: None,
+            occlusion_query_set: None,
        });

        render_pass.set_pipeline(&self.pipeline);
--- a/uw8-window/src/lib.rs
+++ b/uw8-window/src/lib.rs
@@ -15,7 +15,7 @@ struct FpsCounter {
 }

 impl Window {
-    pub fn new(config: WindowConfig) -> Result<Window> {
+    pub fn new(mut config: WindowConfig) -> Result<Window> {
        let fps_counter = if config.fps_counter {
            Some(FpsCounter {
                start: Instant::now(),
@@ -24,6 +24,7 @@ impl Window {
        } else {
            None
        };
+        config.scale = config.scale.max(1.).min(20.);
        if config.enable_gpu {
            match gpu::Window::new(config) {
                Ok(window) => {
@@ -71,6 +72,7 @@ pub struct WindowConfig {
    filter: u32,
    fullscreen: bool,
    fps_counter: bool,
+    scale: f32,
 }

 impl Default for WindowConfig {
@@ -80,6 +82,7 @@ impl Default for WindowConfig {
            filter: 5,
            fullscreen: false,
            fps_counter: false,
+            scale: 2.,
        }
    }
 }
@@ -102,6 +105,10 @@ impl WindowConfig {
        }
        self.fullscreen = args.contains("--fullscreen");
        self.fps_counter = args.contains("--fps");
+        self.scale = args
+            .opt_value_from_str("--scale")
+            .unwrap()
+            .unwrap_or(self.scale);
    }
 }

--- a/web/package.json
+++ b/web/package.json
@@ -4,5 +4,6 @@
    "@parcel/optimizer-data-url": "^2.0.0",
    "@parcel/transformer-inline-string": "^2.0.0",
    "parcel": "^2.0.0"
-  }
+  },
+  "dependencies": {}
 }
--- a/web/src/index.html
+++ b/web/src/index.html
@@ -10,7 +10,7 @@
    </head>
    <body>
        <div id="uw8">
-            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.2.2
+            <a href="https://exoticorn.github.io/microw8">MicroW8</a> 0.3.1
        </div>
        <div id="centered">
            <canvas class="screen" id="screen" width="320" height="240">
@@ -27,4 +27,4 @@
    <script type="module">
        import "./main.js";
    </script>
-</html>
+</html>
--- a/web/src/microw8.js
+++ b/web/src/microw8.js
@@ -240,6 +240,7 @@ export default function MicroW8(screen, config = {}) {
            await audioReadyPromise;
    
            let startTime = Date.now();
+            let frameCounter = 0;
    
            const timePerFrame = 1000 / 60;

@@ -274,7 +275,7 @@ export default function MicroW8(screen, config = {}) {
    
                try {
                    let restart = false;
-                    let nextFrame = 0;
+                    let thisFrame;
                    if (!isPaused) {
                        let gamepads = navigator.getGamepads();
                        let gamepad = 0;
@@ -306,6 +307,7 @@ export default function MicroW8(screen, config = {}) {
                        let time = Date.now() - startTime;
                        u32Mem[16] = time;
                        u32Mem[17] = pad | gamepad;
+                        u32Mem[18] = frameCounter++;
                        if(instance.exports.upd) {
                            instance.exports.upd();
                        }
@@ -321,12 +323,13 @@ export default function MicroW8(screen, config = {}) {
                        }
                        canvasCtx.putImageData(imageData, 0, 0);

-                        let thisFrame = Math.floor(time * 6 / 100);
-                        let timeOffset = time - thisFrame * 100 / 6;
-                        nextFrame = Math.ceil(startTime + (thisFrame + 1) * 100 / 6 + Math.min(4, timeOffset));
+                        let timeOffset = ((time * 6) % 100 - 50) / 6;
+                        thisFrame = startTime + time - timeOffset / 8;
+                    } else {
+                        thisFrame = Date.now();
                    }
                    let now = Date.now();
-                    nextFrame = Math.max(nextFrame, now);
+                    let nextFrame = Math.max(thisFrame + timePerFrame, now);
    
                    if (restart) {
                        runModule(currentData);
--- a/web/yarn.lock
+++ b/web/yarn.lock
Author	SHA1	Message	Date
Dennis Ranke	fb3fd5e8bb	add frame counter at memory location 72	2024-06-16 14:10:18 +02:00
Dennis Ranke	b85f96b0bb	add support to output sound on devices that only offer surround configs	2024-06-16 13:21:23 +02:00
Dennis Ranke	b69055b58d	update to git version of wasmtime fixes performance regressions since microw8 0.2.1	2024-06-16 13:07:29 +02:00
Dennis Ranke	0878aa3f02	add support for mono-only audio devices	2024-05-26 12:54:59 +02:00
Dennis Ranke	5cd1ecb98a	prepare for 0.3.0 release	2024-04-27 23:22:51 +02:00
Dennis Ranke	842cf9f139	update some more dependencies	2024-04-10 00:04:12 +02:00
Dennis Ranke	d5ed809dc7	minimal text scale docs + reset on cls()	2024-04-10 00:03:54 +02:00
Dennis Ranke	285d9aee2c	add example for scaled text	2024-04-09 00:09:27 +02:00
Dennis Ranke	4e18d38538	add untested implementation of text scale	2024-04-07 23:59:14 +02:00
Dennis Ranke	d4bad3ba8b	add sprite flipping to example	2024-04-07 23:20:13 +02:00
Dennis Ranke	6ddda24156	Merge branch 'sprites'	2024-04-07 22:58:26 +02:00
Dennis Ranke	7003db3a05	update dependencies	2024-04-03 10:26:41 +02:00
Dennis Ranke	8258bc1854	fix typo	2023-09-13 07:36:24 +02:00
Dennis Ranke	a651107104	add start and snd functions to filter exports exclude list	2023-09-03 10:19:30 +02:00
Dennis Ranke	22c35e37f4	remove debug trace	2023-09-02 15:37:27 +02:00
Dennis Ranke	805c939097	add support for sound devices that only accept 16bit audio	2023-08-23 23:03:23 +02:00
Dennis Ranke	440e150896	update dependencies	2023-08-23 00:52:51 +02:00
Dennis Ranke	77b2e27346	clamp snd samples into valid -1.0..1.0 range	2023-08-23 00:20:35 +02:00
Dennis Ranke	09e4fcbf14	add --scale option	2023-08-11 23:52:19 +02:00
				`@@ -0,0 +1 @@`
				`* add support for 16bit sound (not just float)`