From 53815e69c4898bdd7afb198d8b476efa6cbb978f Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sat, 19 Sep 2026 19:30:02 +0200
Subject: fix(engine): use diffuse map as ambient map if none is specified

---
 engine/src/rendering/main_render_pass.rs | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/engine/src/rendering/main_render_pass.rs b/engine/src/rendering/main_render_pass.rs
index ce6e040..c762231 100644
--- a/engine/src/rendering/main_render_pass.rs
+++ b/engine/src/rendering/main_render_pass.rs
@@ -751,6 +751,12 @@ fn add_set_3d_shader_renderable_bindings(
         .field("lighting")
         .field("material");
 
+    let diffuse_map_obj_id = material
+        .diffuse_map
+        .as_ref()
+        .map(|diffuse_map| ObjectId::Asset(diffuse_map.id()))
+        .unwrap_or(white_1x1_tex_obj_id);
+
     render_pass.commands.extend(
         [
             model_3d_shader_cursor
@@ -779,17 +785,13 @@ fn add_set_3d_shader_renderable_bindings(
                         .ambient_map
                         .as_ref()
                         .map(|ambient_map| ObjectId::Asset(ambient_map.id()))
-                        .unwrap_or(white_1x1_tex_obj_id),
+                        .unwrap_or(diffuse_map_obj_id),
                     ShaderBindingTextureKind::Texture2D,
                 ),
             )?,
             main_3d_shader_cursor.field("diffuse_map").binding(
                 ShaderBindingValue::Texture(
-                    material
-                        .diffuse_map
-                        .as_ref()
-                        .map(|diffuse_map| ObjectId::Asset(diffuse_map.id()))
-                        .unwrap_or(white_1x1_tex_obj_id),
+                    diffuse_map_obj_id,
                     ShaderBindingTextureKind::Texture2D,
                 ),
             )?,
-- 
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