From 2e116ba47b5725cbedd126ddbb46e6673e336123 Mon Sep 17 00:00:00 2001
From: supersurviveur <julien.thillard38@gmail.com>
Date: Mon, 28 Sep 2026 10:44:06 +0200
Subject: [PATCH] feat: add AA in headless exports

---
 CLAUDE.md  | 3 ++-
 src/app.rs | 3 +++
 src/cli.rs | 4 ++++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CLAUDE.md b/CLAUDE.md
index be2489b..01a20e3 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -41,7 +41,8 @@ Native CLI flags (`src/cli.rs`, applied in `FractalApp::apply_cli`): `--kind`,
 `--power`, `--julia re,im`, `--phoenix-p re,im`, `--lambda-l re,im`,
 `--palette`, `--share <fragment>`,
 `--view re,im,half_height[,iterations]`, `--rendering-kind`,
-`--yaw`/`--pitch` (3D camera, degrees), `--de`, `--buddhabrot`,
+`--yaw`/`--pitch` (3D camera, degrees), `--de`, `--antialias` (2×2),
+`--buddhabrot`,
 `--buddha-palette`. `--headless` (`src/headless.rs`) skips the window
 entirely: it builds the same view from the other flags, creates its own
 offscreen wgpu device, and renders straight to a PNG (`--width`/`--height`,
diff --git a/src/app.rs b/src/app.rs
index bb0d321..604b4e1 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -847,6 +847,9 @@ impl FractalApp {
         if cli.de {
             self.de_coloring = true;
         }
+        if cli.antialias {
+            self.antialias = true;
+        }
         if cli.buddhabrot {
             self.mode = FractalMode::Buddhabrot;
         }
diff --git a/src/cli.rs b/src/cli.rs
index 0107a10..327985a 100644
--- a/src/cli.rs
+++ b/src/cli.rs
@@ -74,6 +74,10 @@ pub struct Cli {
     #[arg(long)]
     pub de: bool,
 
+    /// Enable 2×2 antialiasing (supersampling; ~4× slower).
+    #[arg(long)]
+    pub antialias: bool,
+
     /// Coloring palette index.
     #[arg(long, value_name = "INDEX")]
     pub palette: Option<u32>,