Formalize editor skybox wiring and debug presets

editor/src/UI/BuiltInIcons.cpp

@@ -98,6 +98,8 @@ struct BuiltInIconState {
     BuiltInTexture folder;
     BuiltInTexture gameObject;
     BuiltInTexture scene;
+    BuiltInTexture cameraGizmo;
+    BuiltInTexture mainLightGizmo;
     struct CachedAssetPreview {
         BuiltInTexture texture;
         std::unique_ptr<LoadedTexturePixels> decodedPixels;
@@ -150,6 +152,16 @@ std::filesystem::path ResolveSceneIconPath() {
     return (exeDir / ".." / ".." / "resources" / "Icons" / "scene_icon.png").lexically_normal();
 }
 
+std::filesystem::path ResolveCameraGizmoIconPath() {
+    const std::filesystem::path exeDir(Platform::GetExecutableDirectoryUtf8());
+    return (exeDir / ".." / ".." / "resources" / "Icons" / "camera_gizmo.png").lexically_normal();
+}
+
+std::filesystem::path ResolveMainLightGizmoIconPath() {
+    const std::filesystem::path exeDir(Platform::GetExecutableDirectoryUtf8());
+    return (exeDir / ".." / ".." / "resources" / "Icons" / "main_light_gizmo.png").lexically_normal();
+}
+
 std::string NormalizePathKey(const std::filesystem::path& path) {
     std::wstring key = path.lexically_normal().generic_wstring();
     std::transform(key.begin(), key.end(), key.begin(), ::towlower);
@@ -959,6 +971,17 @@ void PruneAssetPreviewCache() {
     }
 }
 
+BuiltInTexture* ResolveEditorTexture(EditorTextureIconKind kind) {
+    switch (kind) {
+    case EditorTextureIconKind::CameraGizmo:
+        return &g_icons.cameraGizmo;
+    case EditorTextureIconKind::MainLightGizmo:
+        return &g_icons.mainLightGizmo;
+    default:
+        return nullptr;
+    }
+}
+
 } // namespace
 
 void InitializeBuiltInIcons(
@@ -985,6 +1008,28 @@ void InitializeBuiltInIcons(
     if (LoadTextureFromFile(backend, device, commandQueue, ResolveSceneIconPath(), g_icons.scene, pendingUpload)) {
         g_icons.pendingIconUploads.push_back(std::move(pendingUpload));
     }
+
+    pendingUpload.reset();
+    if (LoadTextureFromFile(
+            backend,
+            device,
+            commandQueue,
+            ResolveCameraGizmoIconPath(),
+            g_icons.cameraGizmo,
+            pendingUpload)) {
+        g_icons.pendingIconUploads.push_back(std::move(pendingUpload));
+    }
+
+    pendingUpload.reset();
+    if (LoadTextureFromFile(
+            backend,
+            device,
+            commandQueue,
+            ResolveMainLightGizmoIconPath(),
+            g_icons.mainLightGizmo,
+            pendingUpload)) {
+        g_icons.pendingIconUploads.push_back(std::move(pendingUpload));
+    }
 }
 
 void ShutdownBuiltInIcons() {
@@ -997,6 +1042,8 @@ void ShutdownBuiltInIcons() {
     ResetTexture(g_icons.folder);
     ResetTexture(g_icons.gameObject);
     ResetTexture(g_icons.scene);
+    ResetTexture(g_icons.cameraGizmo);
+    ResetTexture(g_icons.mainLightGizmo);
     g_icons.backend = nullptr;
     g_icons.device = nullptr;
     g_icons.commandQueue = nullptr;
@@ -1041,6 +1088,22 @@ void DrawAssetIcon(ImDrawList* drawList, const ImVec2& min, const ImVec2& max, A
     DrawBuiltInFileIcon(drawList, min, max);
 }
 
+bool DrawEditorTextureIcon(
+    ImDrawList* drawList,
+    const ImVec2& min,
+    const ImVec2& max,
+    EditorTextureIconKind kind) {
+    MaintainIconRuntimeState();
+
+    const BuiltInTexture* texture = ResolveEditorTexture(kind);
+    if (texture == nullptr || !texture->IsValid()) {
+        return false;
+    }
+
+    DrawTextureIcon(drawList, *texture, min, max);
+    return true;
+}
+
 bool DrawTextureAssetPreview(
     ImDrawList* drawList,
     const ImVec2& min,

editor/src/UI/BuiltInIcons.h

@@ -19,6 +19,11 @@ enum class AssetIconKind {
     Scene
 };
 
+enum class EditorTextureIconKind {
+    CameraGizmo,
+    MainLightGizmo
+};
+
 void InitializeBuiltInIcons(
     ImGuiBackendBridge& backend,
     ID3D12Device* device,
@@ -27,6 +32,11 @@ void InitializeBuiltInIcons(
 void ShutdownBuiltInIcons();
 
 void DrawAssetIcon(ImDrawList* drawList, const ImVec2& min, const ImVec2& max, AssetIconKind kind);
+bool DrawEditorTextureIcon(
+    ImDrawList* drawList,
+    const ImVec2& min,
+    const ImVec2& max,
+    EditorTextureIconKind kind);
 bool DrawTextureAssetPreview(
     ImDrawList* drawList,
     const ImVec2& min,