1 files changed, 49 insertions, 3 deletions

diff --git a/src/screen/drm/crtc/root.zig b/src/screen/drm/crtc/root.zig
index 7601732..3c9d6f9 100644
--- a/src/screen/drm/crtc/root.zig
+++ b/src/screen/drm/crtc/root.zig
@@ -2,9 +2,11 @@ const std = @import("std");
 const Card = @import("../card.zig").Card;
 const Drm = @import("../request.zig").Drm;
 const Connector = @import("../connector/root.zig").Connector;
+const FrameBuffer = @import("../frame-buffer/root.zig").FrameBuffer;
+const Mode = @import("../connector/mode.zig").Mode;
 
 pub const RawCrtc = extern struct {
-    connectors: ?*Connector,
+    connector_ids: ?*u32,
     count_connectors: u32,
     id: u32,
     buffer_id: u32,
@@ -12,15 +14,19 @@ pub const RawCrtc = extern struct {
     y: u32,
     gamma_size: u32,
     mode_valid: u32,
+    mode: Mode,
 };
 
 pub const Crtc = struct {
     const Self = @This();
 
+    connector_ids: ?*u32,
+    count_connectors: u32,
     id: u32,
     buffer_id: u32,
     x: u32,
     y: u32,
+    mode: Mode,
     mode_valid: u32,
     gamma_size: u32,
     card: *Card,
@@ -29,17 +35,57 @@ pub const Crtc = struct {
         var raw = std.mem.zeroInit(RawCrtc, .{ .id = id });
         try Drm.get_crtc.request(card.file.handle, RawCrtc, &raw);
         return .{
+            .connector_ids = raw.connector_ids,
+            .count_connectors = raw.count_connectors,
             .id = raw.id,
             .buffer_id = raw.buffer_id,
             .x = raw.x,
             .y = raw.y,
+            .mode = raw.mode,
             .mode_valid = raw.mode_valid,
             .gamma_size = raw.gamma_size,
             .card = card,
         };
     }
 
-    pub fn deinit(self: *Self) void {
-        _ = self;
+    pub fn attach(self: *Self, frame_buffer: *FrameBuffer, connector: *Connector, mode: Mode) !void {
+        self.connector_ids = &connector.id;
+        self.count_connectors = 1;
+
+        var crtc = RawCrtc {
+            .id = self.id,
+            .x = self.x,
+            .y = self.y,
+            .buffer_id = frame_buffer.id,
+            .connector_ids = self.connector_ids,
+            .count_connectors = self.count_connectors,
+            .mode = mode,
+            .mode_valid = 1,
+            .gamma_size = self.gamma_size,
+        };
+
+        try Drm.set_crtc.request(self.card.file.handle, RawCrtc, &crtc);
+
+        std.debug.print("crtc = {any}\n", .{self});
+    }
+
+    pub fn detach(self: *Self) void {
+        var crtc = RawCrtc {
+            .id = self.id,
+            .x = self.x,
+            .y = self.y,
+            .buffer_id = self.buffer_id,
+            .connector_ids = self.connector_ids,
+            .count_connectors = self.count_connectors,
+            .mode = self.mode,
+            .mode_valid = self.mode_valid,
+            .gamma_size = self.gamma_size,
+        };
+
+        Drm.set_crtc.request(
+            self.card.file.handle,
+            RawCrtc,
+            &crtc
+        ) catch |err| std.debug.panic("set crtc failed on detach: {}", .{err});
     }
 };