From 786e0fa4f0a4faa5fd94a8270f9473e75e9f5b86 Mon Sep 17 00:00:00 2001
From: Ivan Molodetskikh <yalterz@gmail.com>
Date: Mon, 4 Sep 2023 10:24:23 +0400
Subject: Re-enable dmabufs but without overlay planes

---
 src/backend/tty.rs | 37 +++++++++++++++++++------------------
 1 file changed, 19 insertions(+), 18 deletions(-)

diff --git a/src/backend/tty.rs b/src/backend/tty.rs
index fb251d4a..194e49a0 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};
@@ -28,11 +28,11 @@ use smithay::reexports::nix::libc::dev_t;
 use smithay::reexports::wayland_protocols::wp::linux_dmabuf::zv1::server::zwp_linux_dmabuf_feedback_v1::TrancheFlags;
 use smithay::reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback;
 use smithay::utils::DeviceFd;
-use smithay::wayland::dmabuf::{DmabufFeedbackBuilder, DmabufState, DmabufFeedback};
+use smithay::wayland::dmabuf::{DmabufFeedbackBuilder, DmabufGlobal, DmabufState, DmabufFeedback};
 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::utils::get_monotonic_time;
 use crate::{LoopData, Niri};
 
@@ -63,7 +63,7 @@ struct OutputDevice {
     drm_scanner: DrmScanner,
     surfaces: HashMap<crtc::Handle, Surface>,
     dmabuf_state: DmabufState,
-    // dmabuf_global: DmabufGlobal,
+    dmabuf_global: DmabufGlobal,
 }
 
 #[derive(Debug, Clone, Copy)]
@@ -368,13 +368,12 @@ impl Tty {
 
         let formats = Bind::<Dmabuf>::supported_formats(&gles).unwrap_or_default();
 
-        let 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);
+        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,
@@ -386,7 +385,7 @@ impl Tty {
             drm_scanner: DrmScanner::new(),
             surfaces: HashMap::new(),
             dmabuf_state,
-            // dmabuf_global,
+            dmabuf_global,
         });
 
         self.device_changed(device_id, niri);
@@ -441,9 +440,9 @@ impl Tty {
         }
 
         let mut device = self.output_device.take().unwrap();
-        // device
-        //     .dmabuf_state
-        //     .destroy_global::<State>(&niri.display_handle, device.dmabuf_global);
+        device
+            .dmabuf_state
+            .destroy_global::<State>(&niri.display_handle, device.dmabuf_global);
         device.gles.unbind_wl_display();
 
         niri.event_loop.remove(device.token);
@@ -514,7 +513,9 @@ impl Tty {
             crtc,
         });
 
-        let planes = surface.planes().unwrap();
+        let mut planes = surface.planes().unwrap();
+        // Disable overlay planes as they cause weird performance issues on my system.
+        planes.overlay.clear();
         let scanout_formats = surface
             .supported_formats(planes.primary.handle)
             .unwrap()
@@ -522,7 +523,7 @@ impl Tty {
             .chain(
                 planes
                     .overlay
-                    .into_iter()
+                    .iter()
                     .flat_map(|p| surface.supported_formats(p.handle).unwrap()),
             )
             .collect::<HashSet<_>>();
@@ -532,7 +533,7 @@ impl Tty {
         let compositor = DrmCompositor::new(
             OutputModeSource::Auto(output.clone()),
             surface,
-            None,
+            Some(planes),
             allocator,
             device.gbm.clone(),
             SUPPORTED_COLOR_FORMATS,
-- 
cgit