From cc1c9d93254df120fc1041e121cb3b5edd00ffc9 Mon Sep 17 00:00:00 2001
From: Ivan Molodetskikh <yalterz@gmail.com>
Date: Sun, 3 Sep 2023 14:22:04 +0400
Subject: Add initial dmabuf feedback implementation

---
 src/backend/tty.rs | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

(limited to 'src/backend/tty.rs')

diff --git a/src/backend/tty.rs b/src/backend/tty.rs
index eec796f1..2db762fc 100644
--- a/src/backend/tty.rs
+++ b/src/backend/tty.rs
@@ -12,7 +12,7 @@ use smithay::backend::drm::{DrmDevice, DrmDeviceFd, DrmEvent, DrmEventTime};
 use smithay::backend::egl::{EGLContext, EGLDisplay};
 use smithay::backend::libinput::{LibinputInputBackend, LibinputSessionInterface};
 use smithay::backend::renderer::gles::{GlesRenderer, GlesTexture};
-use smithay::backend::renderer::{Bind, DebugFlags, ImportEgl};
+use smithay::backend::renderer::{Bind, DebugFlags, ImportDma, ImportEgl};
 use smithay::backend::session::libseat::LibSeatSession;
 use smithay::backend::session::{Event as SessionEvent, Session};
 use smithay::backend::udev::{self, UdevBackend, UdevEvent};
@@ -27,10 +27,11 @@ use smithay::reexports::nix::fcntl::OFlag;
 use smithay::reexports::nix::libc::dev_t;
 use smithay::reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback;
 use smithay::utils::DeviceFd;
+use smithay::wayland::dmabuf::{DmabufFeedbackBuilder, DmabufGlobal, DmabufState};
 use smithay_drm_extras::drm_scanner::{DrmScanEvent, DrmScanner};
 use smithay_drm_extras::edid::EdidInfo;
 
-use crate::niri::OutputRenderElements;
+use crate::niri::{OutputRenderElements, State};
 use crate::{LoopData, Niri};
 
 const BACKGROUND_COLOR: [f32; 4] = [0.1, 0.1, 0.1, 1.];
@@ -59,6 +60,8 @@ struct OutputDevice {
     formats: HashSet<DrmFormat>,
     drm_scanner: DrmScanner,
     surfaces: HashMap<crtc::Handle, GbmDrmCompositor>,
+    dmabuf_state: DmabufState,
+    dmabuf_global: DmabufGlobal,
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -331,6 +334,13 @@ impl Tty {
 
         let formats = Bind::<Dmabuf>::supported_formats(&gles).unwrap_or_default();
 
+        let mut dmabuf_state = DmabufState::new();
+        let default_feedback = DmabufFeedbackBuilder::new(device_id, gles.dmabuf_formats())
+            .build()
+            .unwrap();
+        let dmabuf_global = dmabuf_state
+            .create_global_with_default_feedback::<State>(&niri.display_handle, &default_feedback);
+
         self.output_device = Some(OutputDevice {
             id: device_id,
             token,
@@ -340,6 +350,8 @@ impl Tty {
             formats,
             drm_scanner: DrmScanner::new(),
             surfaces: HashMap::new(),
+            dmabuf_state,
+            dmabuf_global,
         });
 
         self.device_changed(device_id, niri);
@@ -394,7 +406,11 @@ impl Tty {
         }
 
         let mut device = self.output_device.take().unwrap();
+        device
+            .dmabuf_state
+            .destroy_global::<State>(&niri.display_handle, device.dmabuf_global);
         device.gles.unbind_wl_display();
+
         niri.event_loop.remove(device.token);
     }
 
@@ -582,6 +598,10 @@ impl Tty {
             }
         }
     }
+
+    pub fn dmabuf_state(&mut self) -> &mut DmabufState {
+        &mut self.output_device.as_mut().unwrap().dmabuf_state
+    }
 }
 
 fn refresh_interval(mode: DrmMode) -> Duration {
-- 
cgit