From a582ddc51952632dc70217e09b853008eee1d199 Mon Sep 17 00:00:00 2001
From: sebastian <s.boeckelmann3@gmail.com>
Date: Sun, 15 Feb 2026 19:54:34 +0100
Subject: [PATCH] FIX: Handle required texture flipping sometimes

---
 src/engine/renderer/loader/Loader.cpp        | 8 ++++----
 src/engine/renderer/loader/Loader.h          | 4 ++--
 src/engine/renderer/loader/OBJLoader.cpp     | 4 ++--
 src/engine/renderer/loader/TextureLoader.cpp | 4 ++--
 src/engine/renderer/loader/TextureLoader.h   | 2 +-
 5 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/src/engine/renderer/loader/Loader.cpp b/src/engine/renderer/loader/Loader.cpp
index c22dc41..f7d5a1e 100644
--- a/src/engine/renderer/loader/Loader.cpp
+++ b/src/engine/renderer/loader/Loader.cpp
@@ -55,8 +55,8 @@ void Loader::cleanUp() {
     }
 }
 
-ModelTexture Loader::loadTextureFromFile(const std::string &path) {
-    return ModelTexture(loadTexture(path));
+ModelTexture Loader::loadTextureFromFile(const std::string &path, bool flipVertically) {
+    return ModelTexture(loadTexture(path, flipVertically));
 }
 
 TextQuadModel Loader::loadTextModel() {
@@ -77,8 +77,8 @@ TextQuadModel Loader::loadTextModel() {
     return {vaoID, vboID, 4};
 }
 
-GLuint Loader::loadTexture(const std::string &path) {
-    Texture2D texture = TextureLoader::loadTexture(path);
+GLuint Loader::loadTexture(const std::string &path, bool flipVertically) {
+    Texture2D texture = TextureLoader::loadTexture(path, flipVertically);
     textureIDs.push_back(texture.id);
     return texture.id;
 }
diff --git a/src/engine/renderer/loader/Loader.h b/src/engine/renderer/loader/Loader.h
index 9d59c2c..063bc40 100644
--- a/src/engine/renderer/loader/Loader.h
+++ b/src/engine/renderer/loader/Loader.h
@@ -27,11 +27,11 @@ public:
     ~Loader();
     void cleanUp();
 
-    ModelTexture loadTextureFromFile(const std::string& path);
+    ModelTexture loadTextureFromFile(const std::string& path, bool flipVertically = true);
     TextQuadModel loadTextModel();
 private:
     GLuint createVAO();
-    GLuint loadTexture(const std::string &path);
+    GLuint loadTexture(const std::string &path, bool flipVertically);
     void storeDataInAttributeList(int attributeNumber, int coordinateSize, const std::vector<float> &data);
     void bindIndicesBuffer(const std::vector<int> &indices);
     void unbindVAO();
diff --git a/src/engine/renderer/loader/OBJLoader.cpp b/src/engine/renderer/loader/OBJLoader.cpp
index 6564b22..87e12a6 100644
--- a/src/engine/renderer/loader/OBJLoader.cpp
+++ b/src/engine/renderer/loader/OBJLoader.cpp
@@ -72,13 +72,13 @@ std::shared_ptr<TexturedModel> OBJLoader::loadModel(const std::string &modelPath
                 if (!mat.diffuse_texname.empty()) {
                     std::string texFile = mat.diffuse_texname;
                     std::filesystem::path fullTexPath = std::filesystem::path(baseDir) / std::filesystem::path(texFile);
-                    texture = std::make_shared<ModelTexture>(loader.loadTextureFromFile(fullTexPath.string()));
+                    texture = std::make_shared<ModelTexture>(loader.loadTextureFromFile(fullTexPath.string(), false));
                 }
             }
         }
 
         if (!texture) {
-            texture = std::make_shared<ModelTexture>(loader.loadTextureFromFile(texturePath));
+            texture = std::make_shared<ModelTexture>(loader.loadTextureFromFile(texturePath, false));
         }
 
         subModels.emplace_back(
diff --git a/src/engine/renderer/loader/TextureLoader.cpp b/src/engine/renderer/loader/TextureLoader.cpp
index 09bb3e9..00d3045 100644
--- a/src/engine/renderer/loader/TextureLoader.cpp
+++ b/src/engine/renderer/loader/TextureLoader.cpp
@@ -9,10 +9,10 @@
 #define STB_IMAGE_IMPLEMENTATION
 #include "stb_image.h"
 
-Texture2D TextureLoader::loadTexture(const std::string &path) {
+Texture2D TextureLoader::loadTexture(const std::string &path, bool flipVertically) {
     Texture2D texture;
 
-    stbi_set_flip_vertically_on_load(true);
+    stbi_set_flip_vertically_on_load(flipVertically);
 
     texture.pixels = stbi_load(
         path.c_str(),
diff --git a/src/engine/renderer/loader/TextureLoader.h b/src/engine/renderer/loader/TextureLoader.h
index a58227a..5f259c5 100644
--- a/src/engine/renderer/loader/TextureLoader.h
+++ b/src/engine/renderer/loader/TextureLoader.h
@@ -12,7 +12,7 @@
 
 class TextureLoader {
 public:
-    static Texture2D loadTexture(const std::string& path);
+    static Texture2D loadTexture(const std::string& path, bool flipVertically= true);
     static void free(Texture2D& texture);
 };