From 853abf3524c07fb04f1efe328cbdf271c2b53e44 Mon Sep 17 00:00:00 2001
From: Sergey Yablokov <yablokovsergey1@gmail.com>
Date: Mon, 28 Jul 2025 03:44:42 +0200
Subject: [PATCH] Ignore backmap rotation as well

---
 internal/SceneCPU.cpp | 3 +++
 internal/SceneGPU.h   | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/internal/SceneCPU.cpp b/internal/SceneCPU.cpp
index 09519580..6e89b66d 100644
--- a/internal/SceneCPU.cpp
+++ b/internal/SceneCPU.cpp
@@ -893,6 +893,9 @@ void Ray::Cpu::Scene::Finalize(const std::function<void(int, int, ParallelForFun
     if (env_.env_map != InvalidTextureHandle._index &&
         (env_.env_map == PhysicalSkyTexture._index || env_.env_map == physical_sky_texture_._index)) {
         env_.env_map_rotation = 0.0f;
+        if (env_.back_map == env_.env_map) {
+            env_.back_map_rotation = 0.0f;
+        }
         env_.sky_map_spread_angle = 2 * PI / float(env_.envmap_resolution);
         PrepareSkyEnvMap_nolock(parallel_for);
     }
diff --git a/internal/SceneGPU.h b/internal/SceneGPU.h
index 5cf5f036..d8608cf0 100644
--- a/internal/SceneGPU.h
+++ b/internal/SceneGPU.h
@@ -1489,6 +1489,9 @@ inline void Ray::NS::Scene::Finalize(const std::function<void(int, int, Parallel
     if (env_.env_map != InvalidTextureHandle._index &&
         (env_.env_map == PhysicalSkyTexture._index || env_.env_map == physical_sky_texture_._index)) {
         env_.env_map_rotation = 0.0f;
+        if (env_.back_map == env_.env_map) {
+            env_.back_map_rotation = 0.0f;
+        }
         env_.sky_map_spread_angle = 2 * PI / float(env_.envmap_resolution);
         if (!atmosphere_params_buf_) {
             atmosphere_params_buf_ = Buffer{"Atmosphere Params", ctx_, eBufType::Uniform, sizeof(atmosphere_params_t)};