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-rw-r--r--dhwt-codec/.gitignore2
-rw-r--r--dhwt-codec/Cargo.lock350
-rw-r--r--dhwt-codec/Cargo.toml9
-rwxr-xr-xdhwt-codec/run16
-rw-r--r--dhwt-codec/src/bin/decode.rs54
-rw-r--r--dhwt-codec/src/bin/encode.rs54
-rw-r--r--dhwt-codec/src/bin/export.rs42
-rw-r--r--dhwt-codec/src/bin/import.rs51
-rw-r--r--dhwt-codec/src/io.rs71
-rw-r--r--dhwt-codec/src/lib.rs23
-rw-r--r--dhwt-codec/src/transform.rs42
-rw-r--r--dhwt-codec/src/trim.rs36
-rw-r--r--dhwt-codec/src/view.rs42
-rw-r--r--vgcodec/.gitignore3
-rw-r--r--vgcodec/Cargo.lock1310
-rw-r--r--vgcodec/Cargo.toml13
-rw-r--r--vgcodec/src/app.rs37
-rw-r--r--vgcodec/src/diff.rs120
-rw-r--r--vgcodec/src/diff.wgsl17
-rw-r--r--vgcodec/src/export.rs80
-rw-r--r--vgcodec/src/main.rs76
-rw-r--r--vgcodec/src/paint.rs120
-rw-r--r--vgcodec/src/paint.wgsl19
23 files changed, 2587 insertions, 0 deletions
diff --git a/dhwt-codec/.gitignore b/dhwt-codec/.gitignore
new file mode 100644
index 0000000..495c6ed
--- /dev/null
+++ b/dhwt-codec/.gitignore
@@ -0,0 +1,2 @@
+/target
+/a
diff --git a/dhwt-codec/Cargo.lock b/dhwt-codec/Cargo.lock
new file mode 100644
index 0000000..715ba3e
--- /dev/null
+++ b/dhwt-codec/Cargo.lock
@@ -0,0 +1,350 @@
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+# It is not intended for manual editing.
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diff --git a/dhwt-codec/Cargo.toml b/dhwt-codec/Cargo.toml
new file mode 100644
index 0000000..080fe20
--- /dev/null
+++ b/dhwt-codec/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "dhwt-codec"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+bincode = "2.0.0-rc.2"
+clap = { version = "4.0.26", features = ["derive"] }
+rayon = "1.6.0"
diff --git a/dhwt-codec/run b/dhwt-codec/run
new file mode 100755
index 0000000..9f7013e
--- /dev/null
+++ b/dhwt-codec/run
@@ -0,0 +1,16 @@
+#!/bin/fish
+
+set f $argv[1]
+set x $argv[2]
+set y $argv[3]
+set z $argv[4]
+
+# cat /dev/urandom | cargo run --release --bin import -- -x $x -y $y -z $z a/inp
+ffmpeg -i $f -frames:v $z -filter_complex [0]scale={$x}x{$y},format=rgb24 -f rawvideo pipe:1 | cargo run --release --bin import -- -x $x -y $y -z $z a/inp
+
+time cargo run --release --bin encode -- -x $x -y $y -z $z a/inp a/enc
+time cargo run --release --bin decode -- -x $x -y $y -z $z a/enc a/out
+
+cargo run --release --bin export -- -x (math $x / 2) -y (math $y / 2) -z (math $z / 2) a/enc | ffmpeg -y -pixel_format rgb24 -f rawvideo -video_size (math $x / 2)x(math $y / 2) -i pipe:0 a/enc.webm
+cargo run --release --bin export -- -x $x -y $y -z $z a/out | ffmpeg -y -pixel_format rgb24 -f rawvideo -video_size {$x}x{$y} -i pipe:0 a/out.webm
+# cargo run --release --bin export -- -x $x -y $y -z $z a/raw_out | ffplay -pixel_format rgb24 -f rawvideo -video_size {$x}x{$y} pipe:0
diff --git a/dhwt-codec/src/bin/decode.rs b/dhwt-codec/src/bin/decode.rs
new file mode 100644
index 0000000..35881fc
--- /dev/null
+++ b/dhwt-codec/src/bin/decode.rs
@@ -0,0 +1,54 @@
+use clap::Parser;
+use dhwt_codec::{
+ io::{empty_videobuf, infile, outfile, read_videobuf_small, write_videobuf, VideoBuf},
+ transform, trim,
+ view::{BufferView, IndexMode},
+ CommonArgs,
+};
+use rayon::prelude::{IntoParallelIterator, ParallelIterator};
+
+fn main() {
+ let args = CommonArgs::parse();
+
+ let mut inf = infile(&args.infile);
+ let mut of = outfile(&args.outfile);
+
+ for c in 0..args.channels {
+ eprintln!("encoding channel #{c}");
+ let a = empty_videobuf(args.x, args.y, args.z);
+ let b = read_videobuf_small(&mut inf);
+
+ eprintln!("\tdecoding Z");
+ (0..args.x).into_par_iter().for_each(|x| {
+ for y in 0..args.y {
+ run_mode(make_mut(&b), make_mut(&a), IndexMode::XY(x, y), args.z)
+ }
+ });
+ eprintln!("\tdecoding Y");
+ (0..args.x).into_par_iter().for_each(|x| {
+ for z in 0..args.z {
+ run_mode(make_mut(&a), make_mut(&b), IndexMode::XZ(x, z), args.y)
+ }
+ });
+ eprintln!("\tdecoding X");
+ (0..args.y).into_par_iter().for_each(|y| {
+ for z in 0..args.z {
+ run_mode(make_mut(&b), make_mut(&a), IndexMode::YZ(y, z), args.x)
+ }
+ });
+ write_videobuf(&mut of, a);
+ }
+}
+
+fn run_mode(a: &mut VideoBuf, b: &mut VideoBuf, mode: IndexMode, size: usize) {
+ trim::untrim(size, &mut BufferView::new(b, mode));
+ transform::decode(
+ size,
+ &mut BufferView::new(a, mode),
+ &mut BufferView::new(b, mode),
+ );
+}
+
+fn make_mut<T>(r: &T) -> &mut T {
+ unsafe { &mut *((r as *const T) as *mut T) }
+}
diff --git a/dhwt-codec/src/bin/encode.rs b/dhwt-codec/src/bin/encode.rs
new file mode 100644
index 0000000..0e711b0
--- /dev/null
+++ b/dhwt-codec/src/bin/encode.rs
@@ -0,0 +1,54 @@
+use clap::Parser;
+use dhwt_codec::{
+ io::{empty_videobuf, infile, outfile, read_videobuf, write_videobuf_small, VideoBuf},
+ transform, trim,
+ view::{BufferView, IndexMode},
+ CommonArgs,
+};
+use rayon::prelude::{IntoParallelIterator, ParallelIterator};
+
+fn main() {
+ let args = CommonArgs::parse();
+
+ let mut inf = infile(&args.infile);
+ let mut of = outfile(&args.outfile);
+
+ for c in 0..args.channels {
+ eprintln!("encoding channel #{c}");
+ let o = empty_videobuf(args.x, args.y, args.z);
+ let i = read_videobuf(&mut inf);
+
+ eprintln!("\tencoding X");
+ (0..args.y).into_par_iter().for_each(|y| {
+ for z in 0..args.z {
+ run_mode(make_mut(&i), make_mut(&o), IndexMode::YZ(y, z), args.x)
+ }
+ });
+ eprintln!("\tencoding Y");
+ (0..args.x).into_par_iter().for_each(|x| {
+ for z in 0..args.z {
+ run_mode(make_mut(&o), make_mut(&i), IndexMode::XZ(x, z), args.y)
+ }
+ });
+ eprintln!("\tencoding Z");
+ (0..args.x).into_par_iter().for_each(|x| {
+ for y in 0..args.y {
+ run_mode(make_mut(&i), make_mut(&o), IndexMode::XY(x, y), args.z)
+ }
+ });
+ write_videobuf_small(&mut of, o);
+ }
+}
+
+fn run_mode(a: &mut VideoBuf, b: &mut VideoBuf, mode: IndexMode, size: usize) {
+ transform::encode(
+ size,
+ &mut BufferView::new(a, mode),
+ &mut BufferView::new(b, mode),
+ );
+ trim::trim(size, &mut BufferView::new(b, mode));
+}
+
+fn make_mut<T>(r: &T) -> &mut T {
+ unsafe { &mut *((r as *const T) as *mut T) }
+}
diff --git a/dhwt-codec/src/bin/export.rs b/dhwt-codec/src/bin/export.rs
new file mode 100644
index 0000000..73f3067
--- /dev/null
+++ b/dhwt-codec/src/bin/export.rs
@@ -0,0 +1,42 @@
+use clap::Parser;
+use dhwt_codec::io::{infile, read_videobuf};
+use std::io::{stdout, BufWriter, Write};
+
+#[derive(Parser)]
+#[clap(about)]
+struct ExportArgs {
+ #[arg(short)]
+ x: usize,
+ #[arg(short)]
+ y: usize,
+ #[arg(short)]
+ z: usize,
+
+ #[arg(short, long, default_value = "3")]
+ channels: usize,
+
+ infile: String,
+}
+
+fn main() {
+ let args = ExportArgs::parse();
+
+ let mut i = infile(&args.infile);
+ let mut writer = BufWriter::new(stdout());
+
+ let mut channels = vec![];
+ for _ in 0..args.channels {
+ channels.push(read_videobuf(&mut i))
+ }
+
+ for z in 0..args.z {
+ for y in 0..args.y {
+ for x in 0..args.x {
+ for c in 0..args.channels {
+ writer.write_all(&[channels[c][x][y][z] as u8]).unwrap();
+ }
+ }
+ }
+ }
+ writer.flush().unwrap();
+}
diff --git a/dhwt-codec/src/bin/import.rs b/dhwt-codec/src/bin/import.rs
new file mode 100644
index 0000000..cd2a35e
--- /dev/null
+++ b/dhwt-codec/src/bin/import.rs
@@ -0,0 +1,51 @@
+use clap::Parser;
+use dhwt_codec::io::{outfile, write_videobuf, Value};
+use std::io::{stdin, Read};
+
+#[derive(Parser)]
+#[clap(about)]
+struct ImportArgs {
+ #[arg(short)]
+ x: usize,
+ #[arg(short)]
+ y: usize,
+ #[arg(short)]
+ z: usize,
+
+ #[arg(short, long, default_value = "3")]
+ channels: usize,
+
+ outfile: String,
+}
+
+fn main() {
+ let args = ImportArgs::parse();
+
+ let mut rawbuf = (0..(args.x * args.y * args.z * args.channels))
+ .map(|_| 0u8)
+ .collect::<Vec<_>>();
+ stdin().read_exact(&mut rawbuf).unwrap();
+
+ let mut o = outfile(&args.outfile);
+
+ for c in 0..args.channels {
+ let mut cols = vec![];
+ for x in 0..args.x {
+ let mut col = vec![];
+ for y in 0..args.y {
+ let mut span = vec![];
+ for z in 0..args.z {
+ span.push(
+ rawbuf[c
+ + (x * args.channels)
+ + (y * args.channels * args.x)
+ + (z * args.channels * args.x * args.y)] as Value,
+ );
+ }
+ col.push(span);
+ }
+ cols.push(col)
+ }
+ write_videobuf(&mut o, cols)
+ }
+}
diff --git a/dhwt-codec/src/io.rs b/dhwt-codec/src/io.rs
new file mode 100644
index 0000000..c60bc79
--- /dev/null
+++ b/dhwt-codec/src/io.rs
@@ -0,0 +1,71 @@
+use bincode::config;
+use std::{
+ fs::File,
+ io::{BufReader, BufWriter, Read, Write},
+};
+
+pub type Value = f32;
+pub type VideoBuf = Vec<Vec<Vec<Value>>>;
+pub const ZERO: Value = 0 as Value;
+pub const TWO: Value = 2 as Value;
+
+pub fn empty_videobuf(x: usize, y: usize, z: usize) -> VideoBuf {
+ (0..x)
+ .map(|_| (0..y).map(|_| (0..z).map(|_| ZERO).collect()).collect())
+ .collect()
+}
+
+pub fn outfile(p: &str) -> impl Write {
+ BufWriter::new(File::create(p).unwrap())
+}
+pub fn infile(p: &str) -> impl Read {
+ BufReader::new(File::open(p).unwrap())
+}
+
+pub fn read_videobuf(f: &mut impl Read) -> VideoBuf {
+ bincode::decode_from_std_read(f, config::standard()).unwrap()
+}
+pub fn write_videobuf(f: &mut impl Write, i: VideoBuf) {
+ bincode::encode_into_std_write(i, f, config::standard()).unwrap();
+}
+
+pub fn write_videobuf_small(f: &mut impl Write, mut i: VideoBuf) {
+ for _ in 0..(i.len() / 2) {
+ i.pop();
+ }
+ for i in &mut i {
+ for _ in 0..(i.len() / 2) {
+ i.pop();
+ }
+ for i in i {
+ for _ in 0..(i.len() / 2) {
+ i.pop();
+ }
+ }
+ }
+ write_videobuf(f, i);
+}
+pub fn read_videobuf_small(f: &mut impl Read) -> VideoBuf {
+ let mut i = read_videobuf(f);
+
+ for i in &mut i {
+ for i in i {
+ for _ in 0..i.len() {
+ i.push(ZERO);
+ }
+ }
+ }
+ for i in &mut i {
+ for _ in 0..i.len() {
+ i.push((0..i[0].len()).map(|_| ZERO).collect());
+ }
+ }
+ for _ in 0..i.len() {
+ i.push(
+ (0..i[0].len())
+ .map(|_| ((0..i[0][0].len()).map(|_| ZERO)).collect())
+ .collect(),
+ );
+ }
+ i
+}
diff --git a/dhwt-codec/src/lib.rs b/dhwt-codec/src/lib.rs
new file mode 100644
index 0000000..69d6b4c
--- /dev/null
+++ b/dhwt-codec/src/lib.rs
@@ -0,0 +1,23 @@
+use clap::Parser;
+
+pub mod io;
+pub mod transform;
+pub mod trim;
+pub mod view;
+
+#[derive(Parser)]
+#[clap(about)]
+pub struct CommonArgs {
+ #[arg(short)]
+ pub x: usize,
+ #[arg(short)]
+ pub y: usize,
+ #[arg(short)]
+ pub z: usize,
+
+ #[arg(short, long, default_value = "3")]
+ pub channels: usize,
+
+ pub infile: String,
+ pub outfile: String,
+}
diff --git a/dhwt-codec/src/transform.rs b/dhwt-codec/src/transform.rs
new file mode 100644
index 0000000..82bccd1
--- /dev/null
+++ b/dhwt-codec/src/transform.rs
@@ -0,0 +1,42 @@
+use crate::io::{Value, TWO};
+use std::ops::{Index, IndexMut};
+
+pub fn encode<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>(
+ size: usize,
+ a: &mut X,
+ b: &mut X,
+) {
+ let mut k = size;
+ while k != 1 {
+ k /= 2;
+ for i in 0..k {
+ let x = a[i * 2];
+ let y = a[i * 2 + 1];
+ b[i] = x + y;
+ b[k + i] = x - y;
+ }
+ for i in 0..k {
+ a[i] = b[i]
+ }
+ }
+}
+
+pub fn decode<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>(
+ size: usize,
+ a: &mut X,
+ b: &mut X,
+) {
+ let mut k = 1;
+ while k != size {
+ for i in 0..k {
+ let avr = a[i] / TWO;
+ let spread = a[i + k] / TWO;
+ b[i * 2] = avr + spread;
+ b[i * 2 + 1] = avr - spread;
+ }
+ k *= 2;
+ for i in 0..k {
+ a[i] = b[i]
+ }
+ }
+}
diff --git a/dhwt-codec/src/trim.rs b/dhwt-codec/src/trim.rs
new file mode 100644
index 0000000..85a920a
--- /dev/null
+++ b/dhwt-codec/src/trim.rs
@@ -0,0 +1,36 @@
+use crate::io::{Value, TWO, ZERO};
+use std::ops::{Index, IndexMut};
+
+pub fn trim<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>(
+ size: usize,
+ a: &mut X,
+) {
+ let half = size / 2;
+ let quarter = size / 4;
+ for i in 0..(size / 2 / 4) {
+ let hi = half + i * 4;
+ let qi = quarter + i * 2;
+ a[qi] = (a[qi + 0] + a[qi + 1]) / TWO;
+ a[qi + 1] = (a[hi + 0] + a[hi + 1] + a[hi + 2] + a[hi + 3]) / (TWO * TWO);
+ }
+ for i in half..size {
+ a[i] = ZERO;
+ }
+}
+
+pub fn untrim<X: Index<usize, Output = Value> + IndexMut<usize, Output = Value>>(
+ size: usize,
+ a: &mut X,
+) {
+ let half = size / 2;
+ let quarter = size / 4;
+ for i in 0..(size / 2 / 4) {
+ let hi = half + i * 4;
+ let qi = quarter + i * 2;
+ a[hi + 0] = a[qi + 1];
+ a[hi + 1] = a[qi + 1];
+ a[hi + 2] = a[qi + 1];
+ a[hi + 3] = a[qi + 1];
+ a[qi + 1] = a[qi];
+ }
+}
diff --git a/dhwt-codec/src/view.rs b/dhwt-codec/src/view.rs
new file mode 100644
index 0000000..0f2ecf7
--- /dev/null
+++ b/dhwt-codec/src/view.rs
@@ -0,0 +1,42 @@
+use std::ops::{Index, IndexMut};
+
+use crate::io::{VideoBuf, Value};
+
+#[derive(Copy, Clone, Debug)]
+pub enum IndexMode {
+ XY(usize, usize),
+ XZ(usize, usize),
+ YZ(usize, usize),
+}
+
+pub struct BufferView<'a> {
+ mode: IndexMode,
+ buf: &'a mut VideoBuf,
+}
+
+impl<'a> BufferView<'a> {
+ pub fn new(buf: &'a mut VideoBuf, mode: IndexMode) -> Self {
+ BufferView { mode, buf }
+ }
+}
+
+impl Index<usize> for BufferView<'_> {
+ type Output = Value;
+
+ fn index(&self, a: usize) -> &Self::Output {
+ match self.mode {
+ IndexMode::XY(x, y) => &self.buf[x][y][a],
+ IndexMode::XZ(x, z) => &self.buf[x][a][z],
+ IndexMode::YZ(y, z) => &self.buf[a][y][z],
+ }
+ }
+}
+impl IndexMut<usize> for BufferView<'_> {
+ fn index_mut(&mut self, a: usize) -> &mut Self::Output {
+ match self.mode {
+ IndexMode::XY(x, y) => &mut self.buf[x][y][a],
+ IndexMode::XZ(x, z) => &mut self.buf[x][a][z],
+ IndexMode::YZ(y, z) => &mut self.buf[a][y][z],
+ }
+ }
+}
diff --git a/vgcodec/.gitignore b/vgcodec/.gitignore
new file mode 100644
index 0000000..775fc88
--- /dev/null
+++ b/vgcodec/.gitignore
@@ -0,0 +1,3 @@
+/target
+/a
+
diff --git a/vgcodec/Cargo.lock b/vgcodec/Cargo.lock
new file mode 100644
index 0000000..06a117c
--- /dev/null
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@@ -0,0 +1,1310 @@
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+ "log",
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+ "raw-window-handle",
+ "smallvec",
+ "static_assertions",
+ "wasm-bindgen",
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+ "parking_lot",
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+ "d3d12",
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+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
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diff --git a/vgcodec/Cargo.toml b/vgcodec/Cargo.toml
new file mode 100644
index 0000000..5b15036
--- /dev/null
+++ b/vgcodec/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "vgcodec"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+wgpu = "0.14.0"
+log = "0.4.17"
+env_logger = "0.9.3"
+pollster = "0.2.5"
+bytemuck = "1.12.3"
+futures-intrusive = "0.5.0"
+image = "0.24.5"
diff --git a/vgcodec/src/app.rs b/vgcodec/src/app.rs
new file mode 100644
index 0000000..0c063a5
--- /dev/null
+++ b/vgcodec/src/app.rs
@@ -0,0 +1,37 @@
+use std::sync::Arc;
+
+use wgpu::{Adapter, Device, Instance, Queue};
+
+pub struct App {
+ pub instance: Instance,
+ pub device: Device,
+ pub adapter: Adapter,
+ pub queue: Queue,
+}
+
+impl App {
+ pub async fn new() -> Arc<Self> {
+ let instance = wgpu::Instance::new(wgpu::Backends::all());
+ let adapter = instance
+ .request_adapter(&wgpu::RequestAdapterOptions::default())
+ .await
+ .unwrap();
+ let (device, queue) = adapter
+ .request_device(
+ &wgpu::DeviceDescriptor {
+ label: None,
+ features: wgpu::Features::empty(),
+ limits: wgpu::Limits::downlevel_defaults(),
+ },
+ None,
+ )
+ .await
+ .unwrap();
+ Arc::new(Self {
+ adapter,
+ device,
+ instance,
+ queue,
+ })
+ }
+}
diff --git a/vgcodec/src/diff.rs b/vgcodec/src/diff.rs
new file mode 100644
index 0000000..44efabe
--- /dev/null
+++ b/vgcodec/src/diff.rs
@@ -0,0 +1,120 @@
+use std::{borrow::Cow, sync::Arc};
+use wgpu::{util::DeviceExt, BindGroup, Buffer, ComputePipeline, Extent3d, Texture};
+
+use crate::app::App;
+
+pub struct Differ {
+ app: Arc<App>,
+ size: Extent3d,
+
+ pipeline: ComputePipeline,
+ bind_group: BindGroup,
+
+ counter_buffer_size: u64,
+ counter_buffer: Buffer,
+ counter_staging_buffer: Buffer,
+}
+
+impl Differ {
+ pub fn new(app: &Arc<App>, extent: Extent3d, tex_a: &Texture, tex_b: &Texture) -> Self {
+ let App { device, .. } = app.as_ref();
+ let cs_module = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+ label: None,
+ source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(include_str!("diff.wgsl"))),
+ });
+
+ let counter_buffer_size = std::mem::size_of::<u32>() as wgpu::BufferAddress;
+ let counter_staging_buffer = device.create_buffer(&wgpu::BufferDescriptor {
+ label: None,
+ size: counter_buffer_size,
+ usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
+ mapped_at_creation: false,
+ });
+ let counter_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+ label: None,
+ contents: bytemuck::cast_slice(&[0u32]),
+ usage: wgpu::BufferUsages::STORAGE
+ | wgpu::BufferUsages::COPY_DST
+ | wgpu::BufferUsages::COPY_SRC,
+ });
+
+ let pipeline = device.create_compute_pipeline(&wgpu::ComputePipelineDescriptor {
+ label: None,
+ layout: None,
+ module: &cs_module,
+ entry_point: "main",
+ });
+
+ let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+ label: None,
+ layout: &pipeline.get_bind_group_layout(0),
+ entries: &[
+ wgpu::BindGroupEntry {
+ binding: 0,
+ resource: wgpu::BindingResource::TextureView(
+ &tex_a.create_view(&wgpu::TextureViewDescriptor::default()),
+ ),
+ },
+ wgpu::BindGroupEntry {
+ binding: 1,
+ resource: wgpu::BindingResource::TextureView(
+ &tex_b.create_view(&wgpu::TextureViewDescriptor::default()),
+ ),
+ },
+ wgpu::BindGroupEntry {
+ binding: 2,
+ resource: counter_buffer.as_entire_binding(),
+ },
+ ],
+ });
+ Self {
+ app: app.clone(),
+ size: extent,
+ pipeline,
+ counter_buffer_size,
+ counter_buffer,
+ bind_group,
+ counter_staging_buffer,
+ }
+ }
+
+ pub async fn run(&mut self) -> u32 {
+ let App { device, queue, .. } = self.app.as_ref();
+
+ let mut encoder =
+ device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+ {
+ let mut cpass =
+ encoder.begin_compute_pass(&wgpu::ComputePassDescriptor { label: None });
+ cpass.set_pipeline(&self.pipeline);
+ cpass.set_bind_group(0, &self.bind_group, &[]);
+ cpass.dispatch_workgroups(self.size.width, self.size.height, 1);
+ }
+
+ encoder.copy_buffer_to_buffer(
+ &self.counter_buffer,
+ 0,
+ &self.counter_staging_buffer,
+ 0,
+ self.counter_buffer_size,
+ );
+
+ queue.submit(Some(encoder.finish()));
+
+ let buffer_slice = self.counter_staging_buffer.slice(..);
+ let (sender, receiver) = futures_intrusive::channel::shared::oneshot_channel();
+ buffer_slice.map_async(wgpu::MapMode::Read, move |v| {
+ sender.send(v.unwrap()).unwrap()
+ });
+ device.poll(wgpu::Maintain::Wait);
+ receiver.receive().await;
+
+ let data = buffer_slice.get_mapped_range();
+ let result: u32 = bytemuck::cast_slice(&data).to_vec()[0];
+
+ drop(data);
+ self.counter_staging_buffer.unmap();
+
+ result
+ }
+}
diff --git a/vgcodec/src/diff.wgsl b/vgcodec/src/diff.wgsl
new file mode 100644
index 0000000..bb5a3e1
--- /dev/null
+++ b/vgcodec/src/diff.wgsl
@@ -0,0 +1,17 @@
+@group(0) @binding(0)
+var tex_a: texture_2d<f32>;
+@group(0) @binding(1)
+var tex_b: texture_2d<f32>;
+
+@group(0) @binding(2)
+var<storage, read_write> exp: atomic<u32>;
+
+@compute @workgroup_size(1)
+fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
+ var col_a = textureLoad(tex_a, vec2(i32(global_id.x), i32(global_id.y)), 0);
+ var col_b = textureLoad(tex_b, vec2(i32(global_id.x), i32(global_id.y)), 0);
+ var diff = col_a - col_b;
+ var diffsum = diff.r + diff.g + diff.b;
+ atomicAdd(&exp, u32(diffsum));
+}
+
diff --git a/vgcodec/src/export.rs b/vgcodec/src/export.rs
new file mode 100644
index 0000000..7b02085
--- /dev/null
+++ b/vgcodec/src/export.rs
@@ -0,0 +1,80 @@
+use crate::app::App;
+use image::RgbaImage;
+use std::{num::NonZeroU32, sync::Arc};
+use wgpu::{
+ Buffer, Extent3d, ImageCopyBuffer, ImageCopyTexture, ImageDataLayout, Origin3d, Texture,
+};
+
+pub struct Exporter {
+ app: Arc<App>,
+ size: Extent3d,
+
+ padded_bytes_per_row: u32,
+ export_buffer: Buffer,
+}
+
+impl Exporter {
+ pub fn new(app: &Arc<App>, size: Extent3d) -> Self {
+ let App { device, .. } = app.as_ref();
+
+ let bytes_per_pixel = std::mem::size_of::<u32>() as u32;
+ let unpadded_bytes_per_row = size.width * bytes_per_pixel;
+ let align = wgpu::COPY_BYTES_PER_ROW_ALIGNMENT;
+ let padded_bytes_per_row_padding = (align - unpadded_bytes_per_row % align) % align;
+ let padded_bytes_per_row = unpadded_bytes_per_row + padded_bytes_per_row_padding;
+
+ let export_buffer_size = (padded_bytes_per_row * size.height) as u64;
+ let export_buffer = device.create_buffer(&wgpu::BufferDescriptor {
+ label: None,
+ size: export_buffer_size,
+ usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
+ mapped_at_creation: false,
+ });
+
+ Self {
+ padded_bytes_per_row,
+ app: app.clone(),
+ size,
+ export_buffer,
+ }
+ }
+ pub async fn run(&self, texture: &Texture, save_path: &str) {
+ let App { device, queue, .. } = self.app.as_ref();
+
+ let mut encoder =
+ device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+
+ encoder.copy_texture_to_buffer(
+ ImageCopyTexture {
+ texture,
+ aspect: wgpu::TextureAspect::All,
+ mip_level: 0,
+ origin: Origin3d::ZERO,
+ },
+ ImageCopyBuffer {
+ buffer: &self.export_buffer,
+ layout: ImageDataLayout {
+ offset: 0,
+ bytes_per_row: Some(NonZeroU32::new(self.padded_bytes_per_row).unwrap()),
+ rows_per_image: None,
+ },
+ },
+ self.size,
+ );
+
+ queue.submit(Some(encoder.finish()));
+
+ let buffer_slice = self.export_buffer.slice(..);
+ let (sender, receiver) = futures_intrusive::channel::shared::oneshot_channel();
+ buffer_slice.map_async(wgpu::MapMode::Read, move |v| {
+ sender.send(v.unwrap()).unwrap()
+ });
+ device.poll(wgpu::Maintain::Wait);
+ receiver.receive().await;
+
+ let data = buffer_slice.get_mapped_range();
+ let result: Vec<u8> = bytemuck::cast_slice(&data).to_vec();
+ let image = RgbaImage::from_raw(self.size.width, self.size.height, result).unwrap();
+ image.save(save_path).unwrap();
+ }
+}
diff --git a/vgcodec/src/main.rs b/vgcodec/src/main.rs
new file mode 100644
index 0000000..9450894
--- /dev/null
+++ b/vgcodec/src/main.rs
@@ -0,0 +1,76 @@
+pub mod app;
+pub mod diff;
+pub mod export;
+pub mod paint;
+
+use app::App;
+use diff::Differ;
+use image::EncodableLayout;
+use wgpu::{Extent3d, Queue, Texture, TextureUsages};
+
+use crate::export::Exporter;
+
+fn main() {
+ env_logger::init_from_env("LOG");
+ pollster::block_on(run());
+}
+
+async fn run() {
+ let app = app::App::new().await;
+
+ let App { device, queue, .. } = app.as_ref();
+
+ let img_target = image::open("a/a.png").unwrap().into_rgba8();
+ let img_initial = image::open("a/initial.png").unwrap().into_rgba8();
+
+ let size = wgpu::Extent3d {
+ width: img_initial.width(),
+ height: img_initial.height(),
+ depth_or_array_layers: 1,
+ };
+
+ let create_texture = || {
+ device.create_texture(&wgpu::TextureDescriptor {
+ size,
+ mip_level_count: 1,
+ sample_count: 1,
+ dimension: wgpu::TextureDimension::D2,
+ format: wgpu::TextureFormat::Rgba8Unorm,
+ usage: TextureUsages::COPY_DST
+ | TextureUsages::TEXTURE_BINDING
+ | TextureUsages::COPY_SRC,
+ label: None,
+ })
+ };
+
+ let tex_target = create_texture();
+ let tex_approx = create_texture();
+
+ write_texture(queue, &tex_target, img_target.as_bytes(), size);
+ write_texture(queue, &tex_approx, img_initial.as_bytes(), size);
+
+ let mut differ = Differ::new(&app, size, &tex_approx, &tex_target);
+ let exporter = Exporter::new(&app, size);
+
+ println!("{}", differ.run().await);
+
+ exporter.run(&tex_approx, "a/approx.png").await;
+}
+
+pub fn write_texture(queue: &Queue, target: &Texture, data: &[u8], size: Extent3d) {
+ queue.write_texture(
+ wgpu::ImageCopyTexture {
+ texture: &target,
+ mip_level: 0,
+ origin: wgpu::Origin3d::ZERO,
+ aspect: wgpu::TextureAspect::All,
+ },
+ &data,
+ wgpu::ImageDataLayout {
+ offset: 0,
+ bytes_per_row: Some(std::num::NonZeroU32::try_from((size.width * 4) as u32).unwrap()),
+ rows_per_image: None,
+ },
+ size,
+ );
+}
diff --git a/vgcodec/src/paint.rs b/vgcodec/src/paint.rs
new file mode 100644
index 0000000..3da0647
--- /dev/null
+++ b/vgcodec/src/paint.rs
@@ -0,0 +1,120 @@
+use std::{borrow::Cow, sync::Arc};
+use wgpu::{util::DeviceExt, BindGroup, Buffer, ComputePipeline, Extent3d, Texture};
+
+use crate::app::App;
+
+pub struct Painter {
+ app: Arc<App>,
+ size: Extent3d,
+
+ pipeline: ComputePipeline,
+ bind_group: BindGroup,
+
+ uniform_buffer_size: u64,
+ uniform_buffer: Buffer,
+ uniform_staging_buffer: Buffer,
+}
+
+impl Painter {
+ pub fn new(app: &Arc<App>, extent: Extent3d, tex_a: &Texture, tex_b: &Texture) -> Self {
+ let App { device, .. } = app.as_ref();
+ let cs_module = device.create_shader_module(wgpu::ShaderModuleDescriptor {
+ label: None,
+ source: wgpu::ShaderSource::Wgsl(Cow::Borrowed(include_str!("paint.wgsl"))),
+ });
+
+ let uniform_buffer_size = std::mem::size_of::<u32>() as wgpu::BufferAddress;
+ let uniform_staging_buffer = device.create_buffer(&wgpu::BufferDescriptor {
+ label: None,
+ size: uniform_buffer_size,
+ usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
+ mapped_at_creation: false,
+ });
+ let uniform_buffer = device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
+ label: None,
+ contents: bytemuck::cast_slice(&[0u32]),
+ usage: wgpu::BufferUsages::STORAGE
+ | wgpu::BufferUsages::COPY_DST
+ | wgpu::BufferUsages::COPY_SRC,
+ });
+
+ let pipeline = device.create_compute_pipeline(&wgpu::ComputePipelineDescriptor {
+ label: None,
+ layout: None,
+ module: &cs_module,
+ entry_point: "main",
+ });
+
+ let bind_group = device.create_bind_group(&wgpu::BindGroupDescriptor {
+ label: None,
+ layout: &pipeline.get_bind_group_layout(0),
+ entries: &[
+ wgpu::BindGroupEntry {
+ binding: 0,
+ resource: wgpu::BindingResource::TextureView(
+ &tex_a.create_view(&wgpu::TextureViewDescriptor::default()),
+ ),
+ },
+ wgpu::BindGroupEntry {
+ binding: 1,
+ resource: wgpu::BindingResource::TextureView(
+ &tex_b.create_view(&wgpu::TextureViewDescriptor::default()),
+ ),
+ },
+ wgpu::BindGroupEntry {
+ binding: 2,
+ resource: uniform_buffer.as_entire_binding(),
+ },
+ ],
+ });
+ Self {
+ app: app.clone(),
+ size: extent,
+ pipeline,
+ uniform_buffer_size,
+ uniform_buffer,
+ bind_group,
+ uniform_staging_buffer,
+ }
+ }
+
+ pub async fn run(&mut self) -> u32 {
+ let App { device, queue, .. } = self.app.as_ref();
+
+ let mut encoder =
+ device.create_command_encoder(&wgpu::CommandEncoderDescriptor { label: None });
+ {
+ let mut cpass =
+ encoder.begin_compute_pass(&wgpu::ComputePassDescriptor { label: None });
+ cpass.set_pipeline(&self.pipeline);
+ cpass.set_bind_group(0, &self.bind_group, &[]);
+ cpass.dispatch_workgroups(self.size.width, self.size.height, 1);
+ }
+
+ encoder.copy_buffer_to_buffer(
+ &self.uniform_buffer,
+ 0,
+ &self.uniform_staging_buffer,
+ 0,
+ self.uniform_buffer_size,
+ );
+
+ queue.submit(Some(encoder.finish()));
+
+ let buffer_slice = self.uniform_staging_buffer.slice(..);
+ let (sender, receiver) = futures_intrusive::channel::shared::oneshot_channel();
+ buffer_slice.map_async(wgpu::MapMode::Read, move |v| {
+ sender.send(v.unwrap()).unwrap()
+ });
+ device.poll(wgpu::Maintain::Wait);
+ receiver.receive().await;
+
+ let data = buffer_slice.get_mapped_range();
+ let result: u32 = bytemuck::cast_slice(&data).to_vec()[0];
+
+ drop(data);
+ self.uniform_staging_buffer.unmap();
+
+ result
+ }
+}
diff --git a/vgcodec/src/paint.wgsl b/vgcodec/src/paint.wgsl
new file mode 100644
index 0000000..02acd8e
--- /dev/null
+++ b/vgcodec/src/paint.wgsl
@@ -0,0 +1,19 @@
+struct Uniforms {
+ x: f32,
+ y: f32,
+ radius: f32,
+ r: f32,
+ g: f32,
+ b: f32
+};
+
+@group(0) @binding(0) var<uniform> uniforms: Uniforms;
+@group(0) @binding(1) var tex: texture_storage_2d<rgba8unorm, write>;
+
+@compute @workgroup_size(1)
+fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
+ let coords = vec2<i32>(global_id.xy);
+ if distance(vec2<f32>(coords), vec2(uniforms.x, uniforms.y)) < uniforms.radius {
+ textureStore(tex, coords.xy, vec4<f32>(vec3<f32>(uniforms.r, uniforms.g, uniforms.b), 1.0));
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.51.0) at 2025-10-08 07:16:58 +0000