From a26026f7088dd49775a785779308ddd9abc12722 Mon Sep 17 00:00:00 2001
From: Consolatis <35009135+Consolatis@users.noreply.github.com>
Date: Mon, 4 Dec 2023 06:12:37 +0100
Subject: [PATCH] [wip] Add dmabuf feedback

Fixes #1268
---
 include/labwc.h |  1 +
 src/server.c    | 24 ++++++++++++++++++++++--
 2 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/include/labwc.h b/include/labwc.h
index 70cef947..9d59b2cf 100644
--- a/include/labwc.h
+++ b/include/labwc.h
@@ -209,6 +209,7 @@ struct server {
 		char pending_output_name[4096];
 	} headless;
 	struct wlr_session *session;
+	struct wlr_linux_dmabuf_v1 *linux_dmabuf;
 
 	struct wlr_xdg_shell *xdg_shell;
 	struct wlr_layer_shell_v1 *layer_shell;
diff --git a/src/server.c b/src/server.c
index c0ee7682..df6d2278 100644
--- a/src/server.c
+++ b/src/server.c
@@ -6,6 +6,7 @@
 #include <wlr/backend/headless.h>
 #include <wlr/backend/multi.h>
 #include <wlr/types/wlr_data_control_v1.h>
+#include <wlr/types/wlr_drm.h>
 #include <wlr/types/wlr_export_dmabuf_v1.h>
 #include <wlr/types/wlr_fractional_scale_v1.h>
 #include <wlr/types/wlr_gamma_control_v1.h>
@@ -35,6 +36,7 @@
 
 #define LAB_WLR_COMPOSITOR_VERSION 5
 #define LAB_WLR_FRACTIONAL_SCALE_V1_VERSION 1
+#define LAB_WLR_LINUX_DMABUF_VERSION 4
 
 static struct wlr_compositor *compositor;
 static struct wl_event_source *sighup_source;
@@ -285,7 +287,22 @@ server_init(struct server *server)
 		exit(EXIT_FAILURE);
 	}
 
-	wlr_renderer_init_wl_display(server->renderer, server->wl_display);
+	if (!wlr_renderer_init_wl_shm(server->renderer, server->wl_display)) {
+		wlr_log(WLR_ERROR, "Failed to initialize shared memory pool");
+		exit(EXIT_FAILURE);
+	}
+
+	if (wlr_renderer_get_dmabuf_texture_formats(server->renderer)) {
+		if (wlr_renderer_get_drm_fd(server->renderer) >= 0) {
+			wlr_log(WLR_ERROR, "initializing wlr_drm");
+			wlr_drm_create(server->wl_display, server->renderer);
+		}
+		wlr_log(WLR_ERROR, "initializing dmabuf");
+		server->linux_dmabuf = wlr_linux_dmabuf_v1_create_with_renderer(
+			server->wl_display, LAB_WLR_LINUX_DMABUF_VERSION, server->renderer);
+	} else {
+		wlr_log(WLR_ERROR, "NOT initializing dmabuf");
+	}
 
 	/*
 	 * Autocreates an allocator for us. The allocator is the bridge between
@@ -390,7 +407,10 @@ server_init(struct server *server)
 		exit(EXIT_FAILURE);
 	}
 	wlr_scene_set_presentation(server->scene, presentation);
-
+	if (server->linux_dmabuf) {
+		wlr_log(WLR_ERROR, "initializing scene dmabuf");
+		wlr_scene_set_linux_dmabuf_v1(server->scene, server->linux_dmabuf);
+	}
 	wlr_export_dmabuf_manager_v1_create(server->wl_display);
 	wlr_screencopy_manager_v1_create(server->wl_display);
 	wlr_data_control_manager_v1_create(server->wl_display);