From add85f4c6d5dd1730491b76d0625b90e1ca1abbf Mon Sep 17 00:00:00 2001
From: Alexander Bock <alexander.bock@liu.se>
Date: Mon, 8 Dec 2025 20:21:36 +0100
Subject: [PATCH] Add new Lua function to query size of an image

---
 ext/ghoul                          |  2 +-
 src/engine/openspaceengine.cpp     |  1 +
 src/engine/openspaceengine_lua.inl | 11 +++++++++++
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/ext/ghoul b/ext/ghoul
index 50315734cb..90240b2d5b 160000
--- a/ext/ghoul
+++ b/ext/ghoul
@@ -1 +1 @@
-Subproject commit 50315734cb1f3f5bd2fbfb60d599bccdfc2e8262
+Subproject commit 90240b2d5bda2c910ea04c29bc9d4210dbd339b4
diff --git a/src/engine/openspaceengine.cpp b/src/engine/openspaceengine.cpp
index 695cf04c9f..1b708175ec 100644
--- a/src/engine/openspaceengine.cpp
+++ b/src/engine/openspaceengine.cpp
@@ -1738,6 +1738,7 @@ scripting::LuaLibrary OpenSpaceEngine::luaLibrary() {
             codegen::lua::RemoveTag,
             codegen::lua::DownloadFile,
             codegen::lua::CreateSingleColorImage,
+            codegen::lua::ImageSize,
             codegen::lua::SaveBase64File,
             codegen::lua::IsMaster,
             codegen::lua::Version,
diff --git a/src/engine/openspaceengine_lua.inl b/src/engine/openspaceengine_lua.inl
index 305450178c..5d880c6dd5 100644
--- a/src/engine/openspaceengine_lua.inl
+++ b/src/engine/openspaceengine_lua.inl
@@ -34,6 +34,7 @@
 #include <ghoul/filesystem/cachemanager.h>
 #include <ghoul/filesystem/filesystem.h>
 #include <ghoul/glm.h>
+#include <ghoul/io/texture/texturereader.h>
 #include <ghoul/io/texture/texturewriter.h>
 #include <ghoul/logging/logmanager.h>
 #include <ghoul/lua/lua_helper.h>
@@ -209,6 +210,16 @@ namespace {
     return fileName;
 }
 
+/**
+ * This function returns the size in pixels of an image file.
+ *
+ * \param path The location of the image file for which the pixel size will be returned
+ * \return The size of the image in pixels
+ */
+[[codegen::luawrap]] glm::ivec2 imageSize(std::filesystem::path path) {
+    return ghoul::io::TextureReader::ref().imageSize(path);
+}
+
 /**
  * This function takes a base64 encoded data string, decodes it and saves the resulting
  * data to the provided filepath.