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WayVR: Implement software texture blitting as an alternative to dmabuf (Closes #174) (#178)

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This commit is contained in:
Aleksander
2025-03-11 23:42:37 +01:00
committed by GitHub
parent a1cc41f541
commit 6d39380ebc
8 changed files with 214 additions and 91 deletions
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49
src/backend/wayvr/display.rs
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@@ -1,4 +1,4 @@
use std::{cell::RefCell, rc::Rc};
use std::{cell::RefCell, rc::Rc, sync::Arc};
use smithay::{
backend::renderer::{
@@ -23,7 +23,7 @@ use crate::{
use super::{
client::WayVRCompositor, comp::send_frames_surface_tree, egl_data, event_queue::SyncEventQueue,
process, smithay_wrapper, time, window, WayVRSignal,
process, smithay_wrapper, time, window, BlitMethod, WayVRSignal,
};
fn generate_auth_key() -> String {
@@ -71,7 +71,8 @@ pub struct Display {
gles_texture: GlesTexture, // TODO: drop texture
egl_image: khronos_egl::Image,
egl_data: Rc<egl_data::EGLData>,
pub dmabuf_data: egl_data::DMAbufData,
pub render_data: egl_data::RenderData,
pub tasks: SyncEventQueue<DisplayTask>,
}
@@ -87,6 +88,7 @@ impl Drop for Display {
pub struct DisplayInitParams<'a> {
pub wm: Rc<RefCell<window::WindowManager>>,
pub config: &'a super::Config,
pub renderer: &'a mut GlesRenderer,
pub egl_data: Rc<egl_data::EGLData>,
pub wayland_env: super::WaylandEnv,
@@ -128,7 +130,13 @@ impl Display {
})?;
let egl_image = params.egl_data.create_egl_image(tex_id)?;
let dmabuf_data = params.egl_data.create_dmabuf_data(&egl_image)?;
let render_data = match params.config.blit_method {
BlitMethod::Dmabuf => {
egl_data::RenderData::Dmabuf(params.egl_data.create_dmabuf_data(&egl_image)?)
}
BlitMethod::Software => egl_data::RenderData::Software(None),
};
let opaque = false;
let size = (params.width as i32, params.height as i32).into();
@@ -145,7 +153,7 @@ impl Display {
wayland_env: params.wayland_env,
wm: params.wm,
displayed_windows: Vec::new(),
dmabuf_data,
render_data,
egl_image,
gles_texture,
last_pressed_time_ms: 0,
@@ -292,7 +300,7 @@ impl Display {
}
}
pub fn tick_render(&self, renderer: &mut GlesRenderer, time_ms: u64) -> anyhow::Result<()> {
pub fn tick_render(&mut self, renderer: &mut GlesRenderer, time_ms: u64) -> anyhow::Result<()> {
renderer.bind(self.gles_texture.clone())?;
let size = Size::from((self.width as i32, self.height as i32));
@@ -340,6 +348,35 @@ impl Display {
send_frames_surface_tree(window.toplevel.wl_surface(), time_ms as u32);
}
if let egl_data::RenderData::Software(_) = &self.render_data {
// Read OpenGL texture into memory. Slow!
let pixel_data = renderer.with_context(|gl| unsafe {
gl.BindTexture(ffi::TEXTURE_2D, self.gles_texture.tex_id());
let len = self.width as usize * self.height as usize * 4;
let mut data: Box<[u8]> = Box::new_uninit_slice(len).assume_init();
gl.ReadPixels(
0,
0,
self.width as i32,
self.height as i32,
ffi::RGBA,
ffi::UNSIGNED_BYTE,
data.as_mut_ptr().cast(),
);
let data: Arc<[u8]> = Arc::from(data);
data
})?;
self.render_data =
egl_data::RenderData::Software(Some(egl_data::RenderSoftwarePixelsData {
data: pixel_data,
width: self.width,
height: self.height,
}));
}
Ok(())
}

24
src/backend/wayvr/egl_data.rs
View File

@@ -1,3 +1,5 @@
use std::sync::Arc;
use super::egl_ex;
use anyhow::anyhow;
@@ -23,13 +25,26 @@ pub struct DMAbufModifierInfo {
}
#[derive(Debug, Clone)]
pub struct DMAbufData {
pub struct RenderDMAbufData {
pub fd: i32,
pub stride: i32,
pub offset: i32,
pub mod_info: DMAbufModifierInfo,
}
#[derive(Debug, Clone)]
pub struct RenderSoftwarePixelsData {
pub data: Arc<[u8]>,
pub width: u16,
pub height: u16,
}
#[derive(Debug, Clone)]
pub enum RenderData {
Dmabuf(RenderDMAbufData),
Software(Option<RenderSoftwarePixelsData>), // will be set if the next image data is available
}
impl EGLData {
pub fn load_func(&self, func_name: &str) -> anyhow::Result<extern "system" fn()> {
let raw_fn = self.egl.get_proc_address(func_name).ok_or(anyhow::anyhow!(
@@ -207,7 +222,10 @@ impl EGLData {
}
}
pub fn create_dmabuf_data(&self, egl_image: &khronos_egl::Image) -> anyhow::Result<DMAbufData> {
pub fn create_dmabuf_data(
&self,
egl_image: &khronos_egl::Image,
) -> anyhow::Result<RenderDMAbufData> {
use egl_ex::PFNEGLEXPORTDMABUFIMAGEMESAPROC as FUNC;
unsafe {
let egl_export_dmabuf_image_mesa =
@@ -235,7 +253,7 @@ impl EGLData {
let mod_info = self.query_dmabuf_mod_info()?;
Ok(DMAbufData {
Ok(RenderDMAbufData {
fd: fds[0],
stride: strides[0],
offset: offsets[0],

35
src/backend/wayvr/mod.rs
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@@ -90,11 +90,27 @@ pub enum WayVRSignal {
BroadcastStateChanged(packet_server::WvrStateChanged),
}
pub enum BlitMethod {
Dmabuf,
Software,
}
impl BlitMethod {
pub fn from_string(str: &str) -> Option<BlitMethod> {
match str {
"dmabuf" => Some(BlitMethod::Dmabuf),
"software" => Some(BlitMethod::Software),
_ => None,
}
}
}
pub struct Config {
pub click_freeze_time_ms: u32,
pub keyboard_repeat_delay_ms: u32,
pub keyboard_repeat_rate: u32,
pub auto_hide_delay: Option<u32>, // if None, auto-hide is disabled
pub blit_method: BlitMethod,
}
pub struct WayVRState {
@@ -104,7 +120,7 @@ pub struct WayVRState {
wm: Rc<RefCell<window::WindowManager>>,
egl_data: Rc<egl_data::EGLData>,
pub processes: process::ProcessVec,
config: Config,
pub config: Config,
dashboard_display: Option<display::DisplayHandle>,
pub tasks: SyncEventQueue<WayVRTask>,
pub signals: SyncEventQueue<WayVRSignal>,
@@ -256,7 +272,7 @@ impl WayVR {
Ok(Self { state, ipc_server })
}
pub fn tick_display(&mut self, display: display::DisplayHandle) -> anyhow::Result<()> {
pub fn tick_display(&mut self, display: display::DisplayHandle) -> anyhow::Result<bool> {
// millis since the start of wayvr
let display = self
.state
@@ -266,12 +282,12 @@ impl WayVR {
if !display.wants_redraw {
// Nothing changed, do not render
return Ok(());
return Ok(false);
}
if !display.visible {
// Display is invisible, do not render
return Ok(());
return Ok(false);
}
let time_ms = get_millis() - self.state.time_start;
@@ -279,7 +295,7 @@ impl WayVR {
display.tick_render(&mut self.state.manager.state.gles_renderer, time_ms)?;
display.wants_redraw = false;
Ok(())
Ok(true)
}
pub fn tick_events(&mut self, app: &AppState) -> anyhow::Result<Vec<TickTask>> {
@@ -537,10 +553,13 @@ impl WayVRState {
}
}
pub fn get_dmabuf_data(&self, display: display::DisplayHandle) -> Option<egl_data::DMAbufData> {
pub fn get_render_data(
&self,
display: display::DisplayHandle,
) -> Option<&egl_data::RenderData> {
self.displays
.get(&display)
.map(|display| display.dmabuf_data.clone())
.map(|display| &display.render_data)
}
pub fn create_display(
@@ -555,12 +574,12 @@ impl WayVRState {
egl_data: self.egl_data.clone(),
renderer: &mut self.manager.state.gles_renderer,
wayland_env: self.manager.wayland_env.clone(),
config: &self.config,
width,
height,
name,
primary,
})?;
let handle = self.displays.add(display);
self.signals.send(WayVRSignal::BroadcastStateChanged(

26
src/config_wayvr.rs
View File

@@ -112,8 +112,8 @@ fn def_keyboard_repeat_rate() -> u32 {
50
}
fn def_version() -> u32 {
1
fn def_blit_method() -> String {
String::from("dmabuf")
}
#[derive(Deserialize, Serialize)]
@@ -125,8 +125,6 @@ pub struct WayVRDashboard {
#[derive(Deserialize, Serialize)]
pub struct WayVRConfig {
#[serde(default = "def_version")]
pub version: u32,
#[serde(default = "def_false")]
pub run_compositor_at_start: bool,
@@ -150,6 +148,9 @@ pub struct WayVRConfig {
#[serde(default = "def_keyboard_repeat_rate")]
pub keyboard_repeat_rate: u32,
#[serde(default = "def_blit_method")]
pub blit_method: String,
}
impl WayVRConfig {
@@ -173,17 +174,19 @@ impl WayVRConfig {
pub fn get_wayvr_config(
config_general: &crate::config::GeneralConfig,
config_wayvr: &crate::config_wayvr::WayVRConfig,
) -> wayvr::Config {
wayvr::Config {
) -> anyhow::Result<wayvr::Config> {
Ok(wayvr::Config {
click_freeze_time_ms: config_general.click_freeze_time_ms,
keyboard_repeat_delay_ms: config_wayvr.keyboard_repeat_delay,
keyboard_repeat_rate: config_wayvr.keyboard_repeat_rate,
blit_method: wayvr::BlitMethod::from_string(&config_wayvr.blit_method)
.ok_or(anyhow::anyhow!("Unknown blit method"))?,
auto_hide_delay: if config_wayvr.auto_hide {
Some(config_wayvr.auto_hide_delay)
} else {
None
},
}
})
}
pub fn post_load(
@@ -221,7 +224,7 @@ impl WayVRConfig {
if self.run_compositor_at_start {
// Start Wayland server instantly
Ok(Some(Rc::new(RefCell::new(WayVRData::new(
Self::get_wayvr_config(config, self),
Self::get_wayvr_config(config, self)?,
)?))))
} else {
// Lazy-init WayVR later if the user requested
@@ -238,10 +241,5 @@ pub fn load_wayvr() -> WayVRConfig {
config_io::ConfigRoot::WayVR.get_conf_d_path()
);
let config = load_config_with_conf_d::<WayVRConfig>("wayvr.yaml", config_io::ConfigRoot::WayVR);
if config.version != def_version() {
panic!("WayVR config version {} is not supported", config.version);
}
config
load_config_with_conf_d::<WayVRConfig>("wayvr.yaml", config_io::ConfigRoot::WayVR)
}

7
src/graphics/mod.rs
View File

@@ -802,10 +802,9 @@ impl WlxGraphics {
frame: DmabufFrame,
tiling: ImageTiling,
layouts: Vec<SubresourceLayout>,
modifiers: Vec<u64>,
modifiers: &[u64],
) -> anyhow::Result<Arc<Image>> {
let extent = [frame.format.width, frame.format.height, 1];
let format = fourcc_to_vk(frame.format.fourcc)?;
let image = unsafe {
@@ -817,7 +816,7 @@ impl WlxGraphics {
usage: ImageUsage::SAMPLED,
external_memory_handle_types: ExternalMemoryHandleTypes::DMA_BUF,
tiling,
drm_format_modifiers: modifiers,
drm_format_modifiers: modifiers.to_owned(),
drm_format_modifier_plane_layouts: layouts,
..Default::default()
},
@@ -894,7 +893,7 @@ impl WlxGraphics {
tiling = ImageTiling::DrmFormatModifier;
};
self.dmabuf_texture_ex(frame, tiling, layouts, modifiers)
self.dmabuf_texture_ex(frame, tiling, layouts, &modifiers)
}
pub fn render_texture(

91
src/overlays/wayvr.rs
View File

@@ -1,6 +1,9 @@
use glam::{vec3a, Affine2, Vec3, Vec3A};
use std::{cell::RefCell, collections::HashMap, rc::Rc, sync::Arc};
use vulkano::image::SubresourceLayout;
use vulkano::{
command_buffer::CommandBufferUsage,
image::{view::ImageView, SubresourceLayout},
};
use wayvr_ipc::packet_server::{self, PacketServer, WvrStateChanged};
use wlx_capture::frame::{DmabufFrame, FourCC, FrameFormat, FramePlane};
@@ -170,8 +173,8 @@ impl InteractionHandler for WayVRInteractionHandler {
}
pub struct WayVRRenderer {
dmabuf_image: Option<Arc<vulkano::image::Image>>,
view: Option<Arc<vulkano::image::view::ImageView>>,
vk_image: Option<Arc<vulkano::image::Image>>,
vk_image_view: Option<Arc<vulkano::image::view::ImageView>>,
context: Rc<RefCell<WayVRContext>>,
graphics: Arc<WlxGraphics>,
}
@@ -184,8 +187,8 @@ impl WayVRRenderer {
) -> anyhow::Result<Self> {
Ok(Self {
context: Rc::new(RefCell::new(WayVRContext::new(wvr, display)?)),
dmabuf_image: None,
view: None,
vk_image: None,
vk_image_view: None,
graphics: app.graphics.clone(),
})
}
@@ -551,8 +554,37 @@ where
}
impl WayVRRenderer {
fn ensure_dmabuf(&mut self, data: wayvr::egl_data::DMAbufData) -> anyhow::Result<()> {
if self.dmabuf_image.is_none() {
fn ensure_software_data(
&mut self,
data: &wayvr::egl_data::RenderSoftwarePixelsData,
) -> anyhow::Result<()> {
let mut upload = self
.graphics
.create_command_buffer(CommandBufferUsage::OneTimeSubmit)?;
let tex = upload.texture2d_raw(
data.width as u32,
data.height as u32,
vulkano::format::Format::R8G8B8A8_UNORM,
&data.data,
)?;
upload.build_and_execute_now()?;
self.vk_image = Some(tex.clone());
self.vk_image_view = Some(ImageView::new_default(tex).unwrap());
Ok(())
}
fn ensure_dmabuf_data(
&mut self,
data: &wayvr::egl_data::RenderDMAbufData,
) -> anyhow::Result<()> {
if self.vk_image.is_some() {
return Ok(()); // already initialized and automatically updated due to direct zero-copy textue access
}
// First init
let mut planes = [FramePlane::default(); 4];
planes[0].fd = Some(data.fd);
@@ -561,7 +593,10 @@ impl WayVRRenderer {
let ctx = self.context.borrow_mut();
let wayvr = ctx.wayvr.borrow_mut();
if let Some(disp) = wayvr.data.state.displays.get(&ctx.display) {
let Some(disp) = wayvr.data.state.displays.get(&ctx.display) else {
anyhow::bail!("Failed to fetch WayVR display")
};
let frame = DmabufFrame {
format: FrameFormat {
width: disp.width as u32,
@@ -590,15 +625,11 @@ impl WayVRRenderer {
frame,
vulkano::image::ImageTiling::DrmFormatModifier,
layouts,
data.mod_info.modifiers,
&data.mod_info.modifiers,
)?;
self.dmabuf_image = Some(tex.clone());
self.view = Some(vulkano::image::view::ImageView::new_default(tex).unwrap());
} else {
anyhow::bail!("Failed to fetch WayVR display")
}
}
self.vk_image = Some(tex.clone());
self.vk_image_view = Some(vulkano::image::view::ImageView::new_default(tex).unwrap());
Ok(())
}
}
@@ -626,34 +657,48 @@ impl OverlayRenderer for WayVRRenderer {
let ctx = self.context.borrow();
let mut wayvr = ctx.wayvr.borrow_mut();
match wayvr.data.tick_display(ctx.display) {
Ok(_) => {}
let redrawn = match wayvr.data.tick_display(ctx.display) {
Ok(r) => r,
Err(e) => {
log::error!("tick_display failed: {}", e);
return Ok(()); // do not proceed further
}
};
if !redrawn {
return Ok(());
}
let dmabuf_data = wayvr
let data = wayvr
.data
.state
.get_dmabuf_data(ctx.display)
.ok_or(anyhow::anyhow!("Failed to fetch dmabuf data"))?
.get_render_data(ctx.display)
.ok_or(anyhow::anyhow!("Failed to fetch render data"))?
.clone();
drop(wayvr);
drop(ctx);
self.ensure_dmabuf(dmabuf_data.clone())?;
match data {
wayvr::egl_data::RenderData::Dmabuf(data) => {
self.ensure_dmabuf_data(&data)?;
}
wayvr::egl_data::RenderData::Software(data) => {
if let Some(new_frame) = &data {
self.ensure_software_data(new_frame)?;
}
}
}
Ok(())
}
fn view(&mut self) -> Option<Arc<vulkano::image::view::ImageView>> {
self.view.clone()
self.vk_image_view.clone()
}
fn frame_transform(&mut self) -> Option<FrameTransform> {
self.view.as_ref().map(|view| FrameTransform {
self.vk_image_view.as_ref().map(|view| FrameTransform {
extent: view.image().extent(),
..Default::default()
})

7
src/res/wayvr.yaml
View File

@@ -5,6 +5,13 @@
version: 1
# If your gpu has some issues with zero-copy textures, you can set this option to "software".
#
# Possible options:
# "dmabuf": Use zero-copy texture access (from EGL to Vulkan) - no performance impact
# "software": Read pixel data to memory via glReadPixels() every time a content has been updated. Minor performance impact on large resolutions
blit_method: "dmabuf"
# Set to true if you want to make Wyland server instantly available.
# By default, WayVR starts only when it's needed.
# (this option is primarily used for remote starting external processes and development purposes)

2
src/state.rs
View File

@@ -139,7 +139,7 @@ impl AppState {
Ok(wvr.clone())
} else {
let wayvr = Rc::new(RefCell::new(WayVRData::new(
WayVRConfig::get_wayvr_config(&self.session.config, &self.session.wayvr_config),
WayVRConfig::get_wayvr_config(&self.session.config, &self.session.wayvr_config)?,
)?));
self.wayvr = Some(wayvr.clone());
Ok(wayvr)