1 files changed, 80 insertions, 0 deletions
diff --git a/crates/renderer/src/texture_server.rs b/crates/renderer/src/texture_server.rs
new file mode 100644
index 0000000..5afad70
--- /dev/null
+++ b/crates/renderer/src/texture_server.rs
@@ -0,0 +1,80 @@
+use teleia::*;
+
+use std::io::Write;
+use std::os::fd::FromRawFd;
+use std::os::unix::net::{AncillaryData, SocketAncillary};
+use std::sync::mpsc::{Receiver, channel};
+use std::{os::unix::net::UnixDatagram, thread::{spawn, JoinHandle}};
+
+use glow::HasContext;
+use crate::ffi::egl;
+use crate::ffi::glfw;
+
+const KEY: usize = 42;
+const SOCK_PATH: &'static str = "/tmp/newton.sock";
+
+
+pub struct Server {
+    pub tex: texture::Texture,
+    thread: JoinHandle<()>,
+    receiver: Receiver<i32>,
+}
+impl Server {
+    pub fn new(ctx: &context::Context) -> Self {
+        std::fs::remove_file(SOCK_PATH).expect("failed to remove socket");
+        let sock = UnixDatagram::bind(SOCK_PATH).expect("failed to bind texture server socket");
+
+        let (sender, receiver) = channel::<i32>();
+        let thread = spawn(move || {
+            let mut ancillary_buf = [0; 128];
+            let mut ancillary = SocketAncillary::new(&mut ancillary_buf);
+            loop {
+                match sock.recv_vectored_with_ancillary(&mut [], &mut ancillary) {
+                    Ok(_) => {
+                        for ar in ancillary.messages() {
+                            match ar {
+                                Ok(AncillaryData::ScmRights(mut sr)) => {
+                                    if let Some(fd) = sr.next() {
+                                        if let Err(e) = sender.send(fd) {
+                                            log::warn!("error on channel: {:?}", e);
+                                        }
+                                    }
+                                },
+                                Ok(_) => log::info!("message is not SCM_RIGHTS"),
+                                Err(e) => log::warn!("failed to read ancillary message: {:?}", e),
+                            }
+                        }
+                    },
+                    Err(e) => log::warn!("texture server failed to receive: {}", e),
+                }
+            }
+        });
+        Self {
+            tex: texture::Texture::new_empty(ctx),
+            thread,
+            receiver,
+        }
+    }
+    pub fn update(&self, ctx: &context::Context) {
+        if let Ok(fd) = self.receiver.try_recv() {
+            log::info!("received file descriptor: {}", fd);
+            unsafe {
+                let window = ctx.window.borrow_mut().0.ptr;
+                let d = glfw::glfwGetEGLDisplay();
+                let c = glfw::glfwGetEGLContext(window);
+                let img = egl::eglCreateImage(d, c, egl::EGL_LINUX_DMA_BUF_EXT, std::ptr::null_mut(), [
+                    egl::EGL_WIDTH as _, 16,
+                    egl::EGL_HEIGHT as _, 16,
+                    egl::EGL_LINUX_DRM_FOURCC_EXT as _, 875708993,
+                    egl::EGL_DMA_BUF_PLANE0_FD_EXT as _, fd as _,
+                    egl::EGL_DMA_BUF_PLANE0_OFFSET_EXT as _, 0,
+                    egl::EGL_DMA_BUF_PLANE0_PITCH_EXT as _, 128,
+                    egl::EGL_NONE as _,
+                ].as_ptr());
+                self.tex.bind(ctx);
+                egl::glEGLImageTargetTexture2DOES(glow::TEXTURE_2D, img);
+                log::info!("set up texture");
+            }
+        }
+    }
+}