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wip: target emscripten for rust poc

This commit is contained in:
Belén Albeza 2024-09-25 11:00:02 +02:00 committed by Alejandro Alonso
parent 6d26abb9e3
commit c83ef201a1
7 changed files with 838 additions and 7 deletions

View file

@ -265,6 +265,16 @@ RUN set -eux; \
rm rustup-init; \
chmod -R a+w $RUSTUP_HOME $CARGO_HOME;
WORKDIR /usr/local
# Install emscripten SDK and activate it
RUN set -eux; \
git clone https://github.com/emscripten-core/emsdk.git; \
cd emsdk; \
./emsdk install latest; \
./emsdk activate latest; \
rustup target add wasm32-unknown-emscripten;
WORKDIR /home
COPY files/nginx.conf /etc/nginx/nginx.conf

View file

@ -11,6 +11,7 @@ alias lsf='ls -h *(.)'
# init Cargo / Rust env
. "/usr/local/cargo/env"
EMSDK_QUIET=1 . "/usr/local/emsdk/emsdk_env.sh"
# include .bashrc if it exists
if [ -f "$HOME/.bashrc.local" ]; then

657
frontend/renderer/rs/Cargo.lock generated Normal file
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source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
[[package]]
name = "windows_x86_64_msvc"
version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
[[package]]
name = "winnow"
version = "0.6.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "68a9bda4691f099d435ad181000724da8e5899daa10713c2d432552b9ccd3a6f"
dependencies = [
"memchr",
]
[[package]]
name = "xattr"
version = "1.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8da84f1a25939b27f6820d92aed108f83ff920fdf11a7b19366c27c4cda81d4f"
dependencies = [
"libc",
"linux-raw-sys",
"rustix",
]
[[package]]
name = "xml-rs"
version = "0.8.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "af4e2e2f7cba5a093896c1e150fbfe177d1883e7448200efb81d40b9d339ef26"

View file

@ -0,0 +1,21 @@
[package]
name = "renderer"
version = "0.1.0"
edition = "2021"
repository = "https://github.com/penpot/penpot"
license-file = "../../../../LICENSE"
description = "Wasm-based canvas renderer for Penpot"
[features]
default = ["skia-safe/gl"]
[[bin]]
name = "renderer_v2"
path = "src/main.rs"
[dependencies]
gl = "0.14.0"
skia-safe = "0.78.0"
[profile.release]
opt-level = "s"

View file

@ -0,0 +1,134 @@
use std::boxed::Box;
use skia_safe::{
gpu::{self, gl::FramebufferInfo, DirectContext},
Color, Paint, PaintStyle, Surface, Rect
};
extern "C" {
pub fn emscripten_GetProcAddress(
name: *const ::std::os::raw::c_char,
) -> *const ::std::os::raw::c_void;
}
struct GpuState {
context: DirectContext,
framebuffer_info: FramebufferInfo,
}
/// This struct holds the state of the Rust application between JS calls.
///
/// It is created by [init] and passed to the other exported functions. Note that rust-skia data
/// structures are not thread safe, so a state must not be shared between different Web Workers.
pub struct State {
gpu_state: GpuState,
surface: Surface,
}
impl State {
fn new(gpu_state: GpuState, surface: Surface) -> Self {
State { gpu_state, surface }
}
fn set_surface(&mut self, surface: Surface) {
self.surface = surface;
}
}
#[no_mangle]
pub fn add(left: f32, right: f32) -> f32 {
println!("left-> {}", left);
println!("right-> {}", right);
left + right
}
fn init_gl() {
unsafe {
gl::load_with(|addr| {
let addr = std::ffi::CString::new(addr).unwrap();
emscripten_GetProcAddress(addr.into_raw() as *const _) as *const _
});
}
}
/// This needs to be done once per WebGL context.
fn create_gpu_state() -> GpuState {
let interface = skia_safe::gpu::gl::Interface::new_native().unwrap();
let context = skia_safe::gpu::direct_contexts::make_gl(interface, None).unwrap();
let framebuffer_info = {
let mut fboid: gl::types::GLint = 0;
unsafe { gl::GetIntegerv(gl::FRAMEBUFFER_BINDING, &mut fboid) };
FramebufferInfo {
fboid: fboid.try_into().unwrap(),
format: skia_safe::gpu::gl::Format::RGBA8.into(),
protected: skia_safe::gpu::Protected::No,
}
};
GpuState {
context,
framebuffer_info,
}
}
/// Create the Skia surface that will be used for rendering.
fn create_surface(gpu_state: &mut GpuState, width: i32, height: i32) -> Surface {
let backend_render_target =
gpu::backend_render_targets::make_gl((width, height), 1, 8, gpu_state.framebuffer_info);
gpu::surfaces::wrap_backend_render_target(
&mut gpu_state.context,
&backend_render_target,
skia_safe::gpu::SurfaceOrigin::BottomLeft,
skia_safe::ColorType::RGBA8888,
None,
None,
)
.unwrap()
}
fn render_rect(surface: &mut Surface, left: f32, top: f32, right: f32, bottom: f32) {
let mut paint = Paint::default();
paint.set_style(PaintStyle::Fill);
paint.set_color(Color::BLACK);
paint.set_anti_alias(true);
surface.canvas().draw_rect(Rect::new(left, top, right, bottom), &paint);
}
/// This is called from JS after the WebGL context has been created.
#[no_mangle]
pub extern "C" fn init(width: i32, height: i32) -> Box<State> {
let mut gpu_state = create_gpu_state();
let surface = create_surface(&mut gpu_state, width, height);
let state = State::new(gpu_state, surface);
Box::new(state)
}
/// Draw a black rect at the specified coordinates.
/// # Safety
#[no_mangle]
pub unsafe extern "C" fn draw_rect(state: *mut State, left: i32, right: i32, top: i32, bottom: i32) {
let state = unsafe { state.as_mut() }.expect("got an invalid state pointer");
//state.surface.canvas().clear(Color::WHITE);
render_rect(&mut state.surface, left as f32, right as f32, top as f32, bottom as f32);
state
.gpu_state
.context
.flush_and_submit_surface(&mut state.surface, None);
}
fn main() {
init_gl();
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_works() {
let result = add(2, 2);
assert_eq!(result, 4);
}
}

View file

@ -75,6 +75,7 @@
[app.main.streams :as ms]
[app.main.worker :as uw]
[app.renderer.cpp :as renderer-cpp]
[app.renderer.rs :as renderer-rs]
[app.util.dom :as dom]
[app.util.globals :as ug]
[app.util.http :as http]
@ -356,6 +357,8 @@
(when (contains? cf/flags :renderer-v2-cpp)
(rx/of (renderer-cpp/init)))
(when (contains? cf/flags :renderer-v2-rs)
(rx/of (renderer-rs/init)))
(->> stream
(rx/filter dch/commit?)

View file

@ -49,6 +49,7 @@
[app.main.ui.workspace.viewport.viewport-ref :refer [create-viewport-ref]]
[app.main.ui.workspace.viewport.widgets :as widgets]
[app.renderer.cpp :as renderer-cpp]
[app.renderer.rs :as renderer-rs]
[app.util.debug :as dbg]
[beicon.v2.core :as rx]
[rumext.v2 :as mf]))
@ -133,6 +134,7 @@
;; REFS
[viewport-ref
on-viewport-ref] (create-viewport-ref)
canvas-ref (mf/use-ref nil)
;; VARS
disable-paste (mf/use-var false)
@ -268,10 +270,12 @@
rule-area-size (/ rulers/ruler-area-size zoom)]
(mf/with-effect
[canvas-ref]
;; FIXME:
(let [canvas (mf/ref-val canvas-ref)]
(renderer-cpp/set-canvas canvas)))
[canvas-ref]
(let [canvas (mf/ref-val canvas-ref)]
(when (contains? cf/flags :renderer-v2-cpp)
(renderer-cpp/set-canvas canvas))
(when (contains? cf/flags :renderer-v2-rs)
(renderer-rs/set-canvas canvas))))
(hooks/setup-dom-events zoom disable-paste in-viewport? workspace-read-only? drawing-tool drawing-path?)
(hooks/setup-viewport-size vport viewport-ref)
@ -314,7 +318,8 @@
:layout layout
:viewport-ref viewport-ref}])]
(if (contains? cf/flags :renderer-v2-cpp)
(if (or (contains? cf/flags :renderer-v2-cpp)
(contains? cf/flags :renderer-v2-rs))
[:canvas {:id "render"
:ref canvas-ref
:class (stl/css :render-shapes)
@ -354,7 +359,7 @@
(when (dbg/enabled? :show-export-metadata)
[:& use/export-page {:page page}])
;; We need a "real" background shape so layer transforms work properly in firefox
;; We need a "real" background shape so layer transforms work properly in firefox
[:rect {:width (:width vbox 0)
:height (:height vbox 0)
:x (:x vbox 0)
@ -363,7 +368,7 @@
[:& (mf/provider ctx/current-vbox) {:value vbox'}
[:& (mf/provider use/include-metadata-ctx) {:value (dbg/enabled? :show-export-metadata)}
;; Render root shape
;; Render root shape
[:& shapes/root-shape {:key page-id
:objects base-objects
:active-frames @active-frames}]]]])