From 84b019965f63d02f0d8f6e3a108f7d29ffa23076 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Sat, 28 Jan 2023 20:54:41 +0900
Subject: refactor: allocate internal random states in Perlin in heap

---
 src/rtw/texture.zig | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'src/rtw/texture.zig')

diff --git a/src/rtw/texture.zig b/src/rtw/texture.zig
index 537ce47..ebbf4cb 100644
--- a/src/rtw/texture.zig
+++ b/src/rtw/texture.zig
@@ -29,8 +29,8 @@ pub const Texture = union(TextureTag) {
         ) };
     }
 
-    pub fn makeNoise(scale: f64, rng: Random) Texture {
-        return .{ .noise = .{ .perlin = Perlin.init(rng), .scale = scale } };
+    pub fn makeNoise(allocator: std.mem.Allocator, scale: f64, rng: Random) !Texture {
+        return .{ .noise = try NoiseTexture.init(allocator, rng, scale) };
     }
 
     pub fn value(tx: Texture, u: f64, v: f64, p: Vec3) Color {
@@ -85,6 +85,17 @@ pub const NoiseTexture = struct {
     perlin: Perlin,
     scale: f64,
 
+    fn init(allocator: std.mem.Allocator, rng: Random, scale: f64) !NoiseTexture {
+        return .{
+            .perlin = try Perlin.init(allocator, rng),
+            .scale = scale,
+        };
+    }
+
+    fn deinit(tx: NoiseTexture) void {
+        tx.perlin.deinit();
+    }
+
     fn value(tx: NoiseTexture, u: f64, v: f64, p: Vec3) Color {
         _ = u;
         _ = v;
-- 
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