🚀 Builds on Linux, work on abstraction
Signed-off-by: Julius Koskela <julius.koskela@unikie.com>
This commit is contained in:
parent
bf16edd3aa
commit
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GPG Key ID:
5A7B7F4897C2914B
96
Cargo.lock
generated
96
Cargo.lock
generated
@ -74,7 +74,7 @@ version = "0.2.14"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
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dependencies = [
|
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"hermit-abi",
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"hermit-abi 0.1.19",
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"libc",
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"winapi",
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]
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@ -159,6 +159,12 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "bytes"
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version = "1.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a2bd12c1caf447e69cd4528f47f94d203fd2582878ecb9e9465484c4148a8223"
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[[package]]
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name = "cc"
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version = "1.0.83"
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@ -224,7 +230,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e16e44ab292b1dddfdaf7be62cfd8877df52f2f3fde5858d95bab606be259f20"
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dependencies = [
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"bitflags 2.4.1",
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"libloading 0.7.4",
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"libloading 0.8.1",
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"winapi",
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]
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@ -453,6 +459,12 @@ dependencies = [
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"libc",
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]
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[[package]]
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name = "hermit-abi"
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version = "0.3.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
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[[package]]
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name = "hexf-parse"
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version = "0.2.1"
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@ -591,6 +603,17 @@ dependencies = [
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"adler",
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]
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[[package]]
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name = "mio"
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version = "0.8.10"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8f3d0b296e374a4e6f3c7b0a1f5a51d748a0d34c85e7dc48fc3fa9a87657fe09"
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dependencies = [
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"libc",
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"wasi",
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"windows-sys",
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]
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[[package]]
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name = "naga"
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version = "0.14.2"
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@ -630,6 +653,16 @@ dependencies = [
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"autocfg",
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]
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[[package]]
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name = "num_cpus"
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version = "1.16.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4161fcb6d602d4d2081af7c3a45852d875a03dd337a6bfdd6e06407b61342a43"
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dependencies = [
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"hermit-abi 0.3.3",
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"libc",
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]
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[[package]]
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name = "objc"
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version = "0.2.7"
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@ -728,6 +761,12 @@ dependencies = [
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"indexmap",
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]
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[[package]]
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name = "pin-project-lite"
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version = "0.2.13"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
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[[package]]
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name = "pkg-config"
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version = "0.3.28"
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@ -853,6 +892,15 @@ version = "1.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
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[[package]]
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name = "signal-hook-registry"
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version = "1.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d8229b473baa5980ac72ef434c4415e70c4b5e71b423043adb4ba059f89c99a1"
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dependencies = [
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"libc",
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]
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[[package]]
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name = "slotmap"
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version = "1.0.7"
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@ -868,6 +916,16 @@ version = "1.11.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4dccd0940a2dcdf68d092b8cbab7dc0ad8fa938bf95787e1b916b0e3d0e8e970"
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[[package]]
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name = "socket2"
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version = "0.5.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "7b5fac59a5cb5dd637972e5fca70daf0523c9067fcdc4842f053dae04a18f8e9"
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dependencies = [
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"libc",
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"windows-sys",
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]
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[[package]]
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name = "spin"
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version = "0.9.8"
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@ -933,6 +991,36 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "tokio"
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version = "1.35.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c89b4efa943be685f629b149f53829423f8f5531ea21249408e8e2f8671ec104"
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dependencies = [
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"backtrace",
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"bytes",
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"libc",
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"mio",
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"num_cpus",
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"parking_lot 0.12.1",
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"pin-project-lite",
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"signal-hook-registry",
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"socket2",
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"tokio-macros",
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"windows-sys",
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]
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[[package]]
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name = "tokio-macros"
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version = "2.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.12"
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@ -1110,7 +1198,7 @@ dependencies = [
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"js-sys",
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"khronos-egl",
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"libc",
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"libloading 0.7.4",
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"libloading 0.8.1",
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"log",
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"metal",
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"naga",
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@ -1149,6 +1237,8 @@ dependencies = [
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"env_logger",
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"futures-intrusive",
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"pollster",
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"thiserror",
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"tokio",
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"wgpu",
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]
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@ -11,3 +11,5 @@ env_logger = "0.9.1"
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pollster = "0.2.5"
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futures-intrusive = "0.4"
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bytemuck = { version = "1.12.1", features = ["derive"] }
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thiserror = "1.0.51"
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tokio = { version = "1.35.1", features = ["sync", "full"] }
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212
src/main.rs
212
src/main.rs
@ -1,8 +1,8 @@
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mod ppu;
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use bytemuck;
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use std::time::Instant;
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use wgpu::util::DeviceExt;
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use bytemuck;
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async fn run() {
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let instance_desc = wgpu::InstanceDescriptor {
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@ -252,7 +252,8 @@ async fn run() {
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.map(|b| {
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let a = bytemuck::from_bytes::<f32>(b);
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a.clone()
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}).collect::<Vec<f32>>();
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})
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.collect::<Vec<f32>>();
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println!("matrix_c_staging_buf {:?}", parsed);
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}
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@ -269,6 +270,209 @@ async fn run() {
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}
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}
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fn main() {
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pollster::block_on(run());
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use ppu::*;
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use std::fs::File;
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#[tokio::main]
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async fn main() -> Result<(), Error> {
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// Initialize PPU
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let mut ppu = PPU::new().await?;
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// Load Shader from a file
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let shader_source = "
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struct Matrix {
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data: array<array<f32, 4>, 4>, // Corrected: Use a comma instead of a semicolon
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};
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@group(0) @binding(0)
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var<storage, read> matrixA: Matrix;
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@group(0) @binding(1)
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var<storage, read> matrixB: Matrix;
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@group(0) @binding(2)
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var<storage, read_write> matrixC: Matrix;
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@compute @workgroup_size(4, 4)
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fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
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let row: u32 = global_id.y;
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let col: u32 = global_id.x;
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var sum: f32 = 0.0;
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for (var k: u32 = 0u; k < 4u; k = k + 1u) {
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sum = sum + matrixA.data[row][k] * matrixB.data[k][col];
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}
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matrixC.data[row][col] = sum;
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}
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"; // Replace with your shader source
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ppu.load_shader("compute_shader", shader_source)?;
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// Create Bind Group Layout
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let bind_group_layout_entries = [
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wgpu::BindGroupLayoutEntry {
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binding: 0,
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visibility: wgpu::ShaderStages::COMPUTE,
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ty: wgpu::BindingType::Buffer {
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ty: wgpu::BufferBindingType::Storage { read_only: true },
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has_dynamic_offset: false,
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min_binding_size: None,
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},
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count: None,
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},
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wgpu::BindGroupLayoutEntry {
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binding: 1,
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visibility: wgpu::ShaderStages::COMPUTE,
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ty: wgpu::BindingType::Buffer {
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ty: wgpu::BufferBindingType::Storage { read_only: true },
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has_dynamic_offset: false,
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min_binding_size: None,
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},
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count: None,
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},
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wgpu::BindGroupLayoutEntry {
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binding: 2,
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visibility: wgpu::ShaderStages::COMPUTE,
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ty: wgpu::BindingType::Buffer {
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ty: wgpu::BufferBindingType::Storage { read_only: false },
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has_dynamic_offset: false,
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min_binding_size: None,
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},
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count: None,
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},
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];
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ppu.load_bind_group_layout("my_bind_group_layout", &bind_group_layout_entries);
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// Create Bind Group
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let bind_group_entries = [
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wgpu::BindGroupEntry {
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binding: 0,
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resource: ppu.get_buffer("matrix_a").unwrap().as_entire_binding(),
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},
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wgpu::BindGroupEntry {
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binding: 1,
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resource: ppu.get_buffer("matrix_b").unwrap().as_entire_binding(),
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},
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wgpu::BindGroupEntry {
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binding: 2,
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resource: ppu.get_buffer("matrix_c").unwrap().as_entire_binding(),
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},
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];
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ppu.create_bind_group("my_bind_group", "my_bind_group_layout", &bind_group_entries)?;
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// Load Pipeline
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ppu.load_pipeline(
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"my_pipeline",
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"compute_shader",
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"main", // Entry point in the shader
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&["my_bind_group_layout"],
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)?;
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// Create a buffer to store the output data
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let output_buffer_label = "output_buffer";
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let output_data: Vec<u32> = vec![0; 10]; // Example: buffer to store 10 unsigned integers
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ppu.load_buffer(
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output_buffer_label,
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&output_data,
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wgpu::BufferUsages::STORAGE | wgpu::BufferUsages::MAP_READ,
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)?;
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// Execute the compute task
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let workgroup_count = (1, 1, 1); // Adjust according to your task's requirements
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let results: Vec<u32> = ppu
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.execute_compute_task(
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"my_pipeline",
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"my_bind_group",
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workgroup_count,
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output_buffer_label,
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std::mem::size_of_val(&output_data[..]),
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)
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.await?;
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// Process results
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println!("Results: {:?}", results);
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Ok(())
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}
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// /// Submit a compute task
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// pub fn submit_task(&self, pipeline: &str, bind_group: &str, workgroup_count: (u32, u32, u32)) {
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// let pipeline = self.get_pipeline(pipeline).unwrap();
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// let bind_group = self.get_bind_group(bind_group).unwrap();
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// let mut encoder = self
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// .device
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// .create_command_encoder(&wgpu::CommandEncoderDescriptor {
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// label: Some("Compute Encoder"),
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// });
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// {
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// let mut compute_pass = encoder.begin_compute_pass(&Default::default());
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// compute_pass.set_pipeline(pipeline);
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// compute_pass.set_bind_group(0, bind_group, &[]);
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// compute_pass.dispatch_workgroups(
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// workgroup_count.0,
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// workgroup_count.1,
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// workgroup_count.2,
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// );
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// }
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// self.queue.submit(Some(encoder.finish()));
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// }
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// /// Complete a compute task
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// pub async fn complete_task<T>(
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// &self,
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// output_buffer: &str,
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// buffer_size: usize,
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// ) -> Result<Vec<T>, Error>
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// where
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// T: bytemuck::Pod + bytemuck::Zeroable,
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// {
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// // Create a staging buffer to read back data into
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// let staging_buffer = self.device.create_buffer(&wgpu::BufferDescriptor {
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// label: Some("Staging Buffer"),
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// size: buffer_size as u64,
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// usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
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// mapped_at_creation: false,
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// });
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// let output_buffer = match self.buffers.get(output_buffer) {
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// Some(buffer) => buffer,
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// None => return Err(Error::BufferNotFound(output_buffer.to_string())),
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// };
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// // Copy data from the compute output buffer to the staging buffer
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// let mut encoder = self
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// .device
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// .create_command_encoder(&wgpu::CommandEncoderDescriptor {
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// label: Some("Readback Encoder"),
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// });
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// encoder.copy_buffer_to_buffer(output_buffer, 0, &staging_buffer, 0, buffer_size as u64);
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// self.queue.submit(Some(encoder.finish()));
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// // Map the buffer asynchronously
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// let buffer_slice = staging_buffer.slice(..);
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// let (sender, receiver) = futures_intrusive::channel::shared::oneshot_channel();
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// buffer_slice.map_async(
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// wgpu::MapMode::Read,
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// move |v: Result<(), wgpu::BufferAsyncError>| {
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// sender.send(v).unwrap();
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// },
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// );
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// // Wait for the buffer to be ready
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// self.device.poll(wgpu::Maintain::Wait);
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// receiver.receive().await.unwrap()?;
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// // Read data from the buffer
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// let data = buffer_slice.get_mapped_range();
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// let result = bytemuck::cast_slice::<_, T>(&data).to_vec();
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// // Unmap the buffer
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// drop(data);
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// staging_buffer.unmap();
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// Ok(result)
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// }
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315
src/ppu.rs
315
src/ppu.rs
@ -1,34 +1,64 @@
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#![allow(unused)]
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use bytemuck;
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// use core::slice::SlicePattern;
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use std::collections::HashMap;
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use std::time::Instant;
|
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|
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use thiserror::Error;
|
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use wgpu::util::DeviceExt;
|
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|
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use bytemuck;
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#[derive(Error, Debug)]
|
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pub enum Error {
|
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#[error("Failed to find an appropriate adapter.")]
|
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AdapterNotFound,
|
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#[error("Failed to create device.")]
|
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DeviceCreationFailed(#[from] wgpu::RequestDeviceError),
|
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#[error("Failed to create query set. {0}")]
|
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QuerySetCreationFailed(String),
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#[error("Failed to async map a buffer.")]
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BufferAsyncError(#[from] wgpu::BufferAsyncError),
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#[error("Failed to create compute pipeline, shader module {0} was not found.")]
|
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ShaderModuleNotFound(String),
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#[error("No buffer found with name {0}.")]
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BufferNotFound(String),
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#[error("Buffer {0} is too small, expected {1} bytes found {2} bytes.")]
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BufferTooSmall(String, usize, usize),
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#[error("No bind group layout found with name {0}.")]
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BindGroupLayoutNotFound(String),
|
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#[error("No pipeline found with name {0}.")]
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PipelineNotFound(String),
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#[error("No bind group found with name {0}.")]
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BindGroupNotFound(String),
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}
|
||||
|
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pub struct PPU {
|
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instance: wgpu::Instance,
|
||||
adapter: wgpu::Adapter,
|
||||
device: wgpu::Device,
|
||||
queue: wgpu::Queue,
|
||||
query_set: Option<wgpu::QuerySet>,
|
||||
// shader: wgpu::ShaderModule,
|
||||
query_set: wgpu::QuerySet,
|
||||
buffers: HashMap<String, wgpu::Buffer>,
|
||||
shader_modules: HashMap<String, wgpu::ShaderModule>,
|
||||
pipelines: HashMap<String, wgpu::ComputePipeline>,
|
||||
bind_group_layouts: HashMap<String, wgpu::BindGroupLayout>,
|
||||
bind_groups: HashMap<String, wgpu::BindGroup>,
|
||||
}
|
||||
|
||||
impl PPU {
|
||||
pub async fn init() -> Self {
|
||||
let instance_desc = wgpu::InstanceDescriptor {
|
||||
backends: wgpu::Backends::VULKAN,
|
||||
dx12_shader_compiler: wgpu::Dx12Compiler::Fxc,
|
||||
gles_minor_version: wgpu::Gles3MinorVersion::default(),
|
||||
flags: wgpu::InstanceFlags::empty(),
|
||||
};
|
||||
let instance = wgpu::Instance::new(instance_desc);
|
||||
/// Initialize a new PPU instance
|
||||
pub async fn new() -> Result<Self, Error> {
|
||||
let instance = wgpu::Instance::default();
|
||||
|
||||
let adapter = instance
|
||||
.request_adapter(&wgpu::RequestAdapterOptions {
|
||||
power_preference: wgpu::PowerPreference::HighPerformance,
|
||||
force_fallback_adapter: true,
|
||||
compatible_surface: None,
|
||||
}).await.expect("Failed to find an appropriate adapter");
|
||||
})
|
||||
.await
|
||||
.ok_or(Error::AdapterNotFound)?;
|
||||
|
||||
let features = adapter.features();
|
||||
|
||||
let (device, queue) = adapter
|
||||
.request_device(
|
||||
&wgpu::DeviceDescriptor {
|
||||
@ -38,25 +68,270 @@ impl PPU {
|
||||
},
|
||||
None,
|
||||
)
|
||||
.await
|
||||
.unwrap();
|
||||
.await?;
|
||||
|
||||
let query_set = if features.contains(wgpu::Features::TIMESTAMP_QUERY) {
|
||||
Some(device.create_query_set(&wgpu::QuerySetDescriptor {
|
||||
device.create_query_set(&wgpu::QuerySetDescriptor {
|
||||
count: 2,
|
||||
ty: wgpu::QueryType::Timestamp,
|
||||
label: None,
|
||||
}))
|
||||
})
|
||||
} else {
|
||||
None
|
||||
return Err(Error::QuerySetCreationFailed(
|
||||
"Timestamp query is not supported".to_string(),
|
||||
));
|
||||
};
|
||||
println!("PPU initialized");
|
||||
Self {
|
||||
|
||||
Ok(Self {
|
||||
instance,
|
||||
adapter,
|
||||
device,
|
||||
queue,
|
||||
query_set,
|
||||
buffers: HashMap::new(),
|
||||
shader_modules: HashMap::new(),
|
||||
pipelines: HashMap::new(),
|
||||
bind_group_layouts: HashMap::new(),
|
||||
bind_groups: HashMap::new(),
|
||||
})
|
||||
}
|
||||
|
||||
/// Create a compute buffer
|
||||
pub fn load_buffer<T: bytemuck::Pod>(
|
||||
&mut self,
|
||||
label: &str,
|
||||
data: &[T],
|
||||
usage: wgpu::BufferUsages,
|
||||
) -> Result<(), Error> {
|
||||
let buffer = self
|
||||
.device
|
||||
.create_buffer_init(&wgpu::util::BufferInitDescriptor {
|
||||
label: Some(label),
|
||||
contents: bytemuck::cast_slice(data),
|
||||
usage,
|
||||
});
|
||||
|
||||
self.buffers.insert(label.to_string(), buffer);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Update a compute buffer
|
||||
pub fn update_buffer<T>(&self, label: &str, data: &[T]) -> Result<(), Error>
|
||||
where
|
||||
T: bytemuck::Pod,
|
||||
{
|
||||
let buffer = match self.buffers.get(label) {
|
||||
Some(buffer) => buffer,
|
||||
None => return Err(Error::BufferNotFound(label.to_string())),
|
||||
};
|
||||
|
||||
let data_bytes = bytemuck::cast_slice(data);
|
||||
let data_len = data_bytes.len() as wgpu::BufferAddress;
|
||||
|
||||
if buffer.size() < data_len {
|
||||
return Err(Error::BufferTooSmall(
|
||||
label.to_string(),
|
||||
data_len as usize,
|
||||
buffer.size() as usize,
|
||||
));
|
||||
}
|
||||
|
||||
self.queue.write_buffer(buffer, 0, data_bytes);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Retrieve a buffer by name
|
||||
pub fn get_buffer(&self, label: &str) -> Option<&wgpu::Buffer> {
|
||||
self.buffers.get(label)
|
||||
}
|
||||
|
||||
pub fn load_bind_group_layout(
|
||||
&mut self,
|
||||
label: &str,
|
||||
layout_entries: &[wgpu::BindGroupLayoutEntry],
|
||||
) {
|
||||
let bind_group_layout = self.device.create_bind_group_layout(&wgpu::BindGroupLayoutDescriptor {
|
||||
label: Some(label),
|
||||
entries: layout_entries,
|
||||
});
|
||||
|
||||
self.bind_group_layouts.insert(label.to_string(), bind_group_layout);
|
||||
}
|
||||
|
||||
pub fn get_bind_group_layout(&self, label: &str) -> Option<&wgpu::BindGroupLayout> {
|
||||
self.bind_group_layouts.get(label)
|
||||
}
|
||||
|
||||
/// Create and store a bind group
|
||||
pub fn create_bind_group(
|
||||
&self,
|
||||
name: &str,
|
||||
layout_name: &str,
|
||||
entries: &[wgpu::BindGroupEntry],
|
||||
) -> Result<wgpu::BindGroup, Error> {
|
||||
let layout = self.bind_group_layouts.get(layout_name)
|
||||
.ok_or_else(|| Error::BindGroupLayoutNotFound(layout_name.to_string()))?;
|
||||
|
||||
let bind_group = self.device.create_bind_group(&wgpu::BindGroupDescriptor {
|
||||
label: Some(name),
|
||||
layout,
|
||||
entries,
|
||||
});
|
||||
Ok(bind_group)
|
||||
}
|
||||
|
||||
/// Retrieve a bind group by name
|
||||
pub fn get_bind_group(&self, name: &str) -> Option<&wgpu::BindGroup> {
|
||||
self.bind_groups.get(name)
|
||||
}
|
||||
|
||||
/// Load a shader and store it in the hash map
|
||||
pub fn load_shader(&mut self, name: &str, source: &str) -> Result<(), Error> {
|
||||
let shader_module = self
|
||||
.device
|
||||
.create_shader_module(wgpu::ShaderModuleDescriptor {
|
||||
label: Some(name),
|
||||
source: wgpu::ShaderSource::Wgsl(source.into()),
|
||||
});
|
||||
self.shader_modules.insert(name.to_string(), shader_module);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Get a shader from the hash map
|
||||
pub fn get_shader(&self, name: &str) -> Option<&wgpu::ShaderModule> {
|
||||
self.shader_modules.get(name)
|
||||
}
|
||||
|
||||
pub fn load_pipeline(
|
||||
&mut self,
|
||||
name: &str,
|
||||
shader_module_name: &str,
|
||||
entry_point: &str,
|
||||
bind_group_layout_names: &[&str], // Use names of bind group layouts
|
||||
) -> Result<(), Error> {
|
||||
// Retrieve the shader module
|
||||
let shader_module = self.get_shader(shader_module_name)
|
||||
.ok_or(Error::ShaderModuleNotFound(shader_module_name.to_string()))?;
|
||||
|
||||
// Retrieve the bind group layouts
|
||||
let bind_group_layouts = bind_group_layout_names
|
||||
.iter()
|
||||
.map(|layout_name| {
|
||||
self.bind_group_layouts.get(*layout_name) // Assuming you have a HashMap for BindGroupLayouts
|
||||
.ok_or_else(|| Error::BindGroupLayoutNotFound(layout_name.to_string()))
|
||||
})
|
||||
.collect::<Result<Vec<_>, _>>()?;
|
||||
|
||||
// Create the pipeline layout
|
||||
let pipeline_layout = self.device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor {
|
||||
label: Some(name),
|
||||
bind_group_layouts: &bind_group_layouts.iter().map(|layout| *layout).collect::<Vec<_>>(),
|
||||
push_constant_ranges: &[],
|
||||
});
|
||||
|
||||
// Create the compute pipeline
|
||||
let pipeline = self.device.create_compute_pipeline(&wgpu::ComputePipelineDescriptor {
|
||||
label: Some(name),
|
||||
layout: Some(&pipeline_layout),
|
||||
module: shader_module,
|
||||
entry_point,
|
||||
});
|
||||
|
||||
// Store the pipeline
|
||||
self.pipelines.insert(name.to_string(), pipeline);
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn get_pipeline(&self, name: &str) -> Option<&wgpu::ComputePipeline> {
|
||||
self.pipelines.get(name)
|
||||
}
|
||||
|
||||
/// Execute a compute task and retrieve the result
|
||||
pub async fn execute_compute_task<T>(
|
||||
&self,
|
||||
pipeline_name: &str,
|
||||
bind_group_name: &str,
|
||||
workgroup_count: (u32, u32, u32),
|
||||
output_buffer_name: &str,
|
||||
buffer_size: usize,
|
||||
) -> Result<Vec<T>, Error>
|
||||
where
|
||||
T: bytemuck::Pod + bytemuck::Zeroable,
|
||||
{
|
||||
// Retrieve the pipeline and bind group
|
||||
let pipeline = self.get_pipeline(pipeline_name)
|
||||
.ok_or_else(|| Error::PipelineNotFound(pipeline_name.to_string()))?;
|
||||
let bind_group = self.get_bind_group(bind_group_name)
|
||||
.ok_or_else(|| Error::BindGroupNotFound(bind_group_name.to_string()))?;
|
||||
|
||||
// Dispatch the compute task
|
||||
let mut encoder = self.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
|
||||
label: Some("Compute Task Encoder"),
|
||||
});
|
||||
{
|
||||
let mut compute_pass = encoder.begin_compute_pass(&Default::default());
|
||||
compute_pass.set_pipeline(pipeline);
|
||||
compute_pass.set_bind_group(0, bind_group, &[]);
|
||||
compute_pass.dispatch_workgroups(workgroup_count.0, workgroup_count.1, workgroup_count.2);
|
||||
}
|
||||
self.queue.submit(Some(encoder.finish()));
|
||||
|
||||
// Wait for the task to complete
|
||||
self.device.poll(wgpu::Maintain::Wait);
|
||||
|
||||
// Retrieve and return the data from the output buffer
|
||||
self.complete_task::<T>(output_buffer_name, buffer_size).await
|
||||
}
|
||||
|
||||
/// Complete a compute task and retrieve the data from an output buffer
|
||||
pub async fn complete_task<T>(
|
||||
&self,
|
||||
output_buffer_name: &str,
|
||||
buffer_size: usize,
|
||||
) -> Result<Vec<T>, Error>
|
||||
where
|
||||
T: bytemuck::Pod + bytemuck::Zeroable,
|
||||
{
|
||||
let output_buffer = self.buffers.get(output_buffer_name)
|
||||
.ok_or_else(|| Error::BufferNotFound(output_buffer_name.to_string()))?;
|
||||
|
||||
// Create a staging buffer to read back data into
|
||||
let staging_buffer = self.device.create_buffer(&wgpu::BufferDescriptor {
|
||||
label: Some("Staging Buffer"),
|
||||
size: buffer_size as u64,
|
||||
usage: wgpu::BufferUsages::MAP_READ | wgpu::BufferUsages::COPY_DST,
|
||||
mapped_at_creation: false,
|
||||
});
|
||||
|
||||
// Copy data from the compute output buffer to the staging buffer
|
||||
let mut encoder = self.device.create_command_encoder(&wgpu::CommandEncoderDescriptor {
|
||||
label: Some("Readback Encoder"),
|
||||
});
|
||||
encoder.copy_buffer_to_buffer(output_buffer, 0, &staging_buffer, 0, buffer_size as u64);
|
||||
self.queue.submit(Some(encoder.finish()));
|
||||
|
||||
// Map the buffer asynchronously
|
||||
let buffer_slice = staging_buffer.slice(..);
|
||||
let (sender, receiver) = futures_intrusive::channel::shared::oneshot_channel();
|
||||
|
||||
buffer_slice.map_async(wgpu::MapMode::Read, move |v: Result<(), wgpu::BufferAsyncError>| {
|
||||
sender.send(v).unwrap();
|
||||
});
|
||||
|
||||
// Wait for the buffer to be ready
|
||||
self.device.poll(wgpu::Maintain::Wait);
|
||||
receiver.receive().await.unwrap()?;
|
||||
let data = buffer_slice.get_mapped_range();
|
||||
|
||||
// Read data from the buffer
|
||||
let result = bytemuck::cast_slice::<_, T>(&data).to_vec();
|
||||
|
||||
// Unmap the buffer
|
||||
drop(data);
|
||||
staging_buffer.unmap();
|
||||
|
||||
Ok(result)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -1,25 +0,0 @@
|
||||
#version 450
|
||||
|
||||
layout(set = 0, binding = 0) buffer MatrixA {
|
||||
float data[4][4];
|
||||
} matrixA;
|
||||
|
||||
layout(set = 0, binding = 1) buffer MatrixB {
|
||||
float data[4][4];
|
||||
} matrixB;
|
||||
|
||||
layout(set = 0, binding = 2) buffer MatrixC {
|
||||
float data[4][4];
|
||||
} matrixC;
|
||||
|
||||
void main() {
|
||||
uint row = gl_GlobalInvocationID.y;
|
||||
uint col = gl_GlobalInvocationID.x;
|
||||
float sum = 0.0;
|
||||
|
||||
for (uint k = 0; k < 4; ++k) {
|
||||
sum += matrixA.data[row][k] * matrixB.data[k][col];
|
||||
}
|
||||
|
||||
matrixC.data[row][col] = sum;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user