run rendering on another real thread (still bugs)

src/renderer/State.zig

@@ -0,0 +1,40 @@
+//! This is the render state that is given to a renderer.
+
+const std = @import("std");
+const DevMode = @import("../DevMode.zig");
+const terminal = @import("../terminal/main.zig");
+
+/// The mutex that must be held while reading any of the data in the
+/// members of this state. Note that the state itself is NOT protected
+/// by the mutex and is NOT thread-safe, only the members values of the
+/// state (i.e. the terminal, devmode, etc. values).
+mutex: *std.Thread.Mutex,
+
+/// A new screen size if the screen was resized.
+resize: ?Resize = null,
+
+/// Cursor configuration for rendering
+cursor: Cursor,
+
+/// The terminal data.
+terminal: *terminal.Terminal,
+
+/// The devmode data.
+devmode: ?*const DevMode = null,
+
+pub const Cursor = struct {
+    /// Current cursor style. This can be set by escape sequences. To get
+    /// the default style, the config has to be referenced.
+    style: terminal.CursorStyle = .default,
+
+    /// Whether the cursor is visible at all. This should not be used for
+    /// "blink" settings, see "blink" for that. This is used to turn the
+    /// cursor ON or OFF.
+    visible: bool = true,
+
+    /// Whether the cursor is currently blinking. If it is blinking, then
+    /// the cursor will not be rendered.
+    blink: bool = false,
+};
+
+pub const Resize = struct {};