gpu errors

include/renderer/font.hpp

@@ -17,11 +17,16 @@ namespace Game::Renderer {
 
             // Build the texture for the font; Call getSDLTexture() afterwards
             void build(SDL_Color color, std::string text);
+                // Rebuild GPU-backed texture after a renderer/device reset
+                bool reload(SDL_Renderer* renderer);
 
             SDL_Texture* getSDLTexture();
             std::string getId();
         private:
             TTF_Font* mFont;
             SDL_Renderer* mRenderer;
+                // Remember last build params so we can rebuild fonts on device reset
+                std::string mLastText;
+                SDL_Color mLastColor;
     };
 }

include/renderer/texture.hpp

@@ -21,10 +21,15 @@ namespace Game::Renderer {
             float getHeight();
             bool isTiled() { return mIsTiled; }
             void setTiled(bool tiled) { mIsTiled = tiled; }
+                // Reload GPU-backed texture using a new renderer after device reset
+                virtual bool reload(SDL_Renderer* renderer);
 
         protected:
             SDL_Texture* mTex;
             std::string mId;
+                // For textures created from disk, store the path so we can reload on device reset
+                std::string mPath;
+                bool mIsFromFile = false;
         private:
             bool mIsTiled = false; // Whether the texture is a tileset that should be rendered as a single tile or not
     };

src/renderer/font.cpp

@@ -36,6 +36,10 @@ namespace Game::Renderer {
     void Font::build(SDL_Color color, std::string text) {
         if (!mFont) { return; }
 
+        // Store last build parameters so we can rebuild after device resets
+        mLastText = text;
+        mLastColor = color;
+
         SDL_Surface* surf = TTF_RenderText_Blended(mFont, text.c_str(), text.size(), color);
         if (!surf) {
             ERROR("TTF_RenderText_Blended Error: " << SDL_GetError() << " (This object may be unusuable)");
@@ -57,6 +61,14 @@ namespace Game::Renderer {
         
     }
 
+    bool Font::reload(SDL_Renderer* renderer) {
+        mRenderer = renderer;
+        if (mLastText.empty()) return false;
+        // Rebuild the texture using the stored last text and color
+        build(mLastColor, mLastText);
+        return true;
+    }
+
     SDL_Texture* Font::getSDLTexture() { return mTex; }
     std::string Font::getId() { return mId; }
 }

src/renderer/renderer.cpp

@@ -24,12 +24,18 @@ namespace Game::Renderer {
     bool Renderer::init(SDL_Window* window) {
         // Request VSync before/at renderer setup; some backends honor this hint.
         SDL_SetHint(SDL_HINT_RENDER_VSYNC, "1");
-
+        // Create renderer using the portable API. Some SDL3 backends may not support the old flags,
+        // so fall back to a software renderer via hint if the first attempt fails.
         mRenderer = SDL_CreateRenderer(window, nullptr);
         if (!mRenderer) {
-            std::string errorMsg = std::string("Neuspešno ustvarjanje rendererja: ") + std::string(SDL_GetError());
+            WARN("Renderer creation failed, attempting software renderer: " << SDL_GetError());
-            ERROR(errorMsg.c_str());
+            SDL_SetHint(SDL_HINT_RENDER_DRIVER, "software");
-            return false;
+            mRenderer = SDL_CreateRenderer(window, nullptr);
+            if (!mRenderer) {
+                std::string errorMsg = std::string("Neuspešno ustvarjanje rendererja: ") + std::string(SDL_GetError());
+                ERROR(errorMsg.c_str());
+                return false;
+            }
         }
 
         mVSyncEnabled = SDL_SetRenderVSync(mRenderer, 1);

src/renderer/texture.cpp

@@ -7,6 +7,9 @@ namespace Game::Renderer {
 
     Texture::Texture(const std::string& path, SDL_Renderer* renderer, std::string id)
         : mTex(nullptr), mId(id) {
+        mPath = path;
+        mIsFromFile = true;
+
         SDL_Surface* surf = IMG_Load(path.c_str());
         if (!surf) {
             ERROR("Failed to load image at " << path);
@@ -44,6 +47,34 @@ namespace Game::Renderer {
         LOG("Tekstura '" << mId << "' uničena")
     }
 
+    bool Texture::reload(SDL_Renderer* renderer) {
+        if (!mIsFromFile || mPath.empty()) return false;
+        if (mTex) {
+            SDL_DestroyTexture(mTex);
+            mTex = nullptr;
+        }
+
+        SDL_Surface* surf = IMG_Load(mPath.c_str());
+        if (!surf) {
+            ERROR("Failed to reload image at " << mPath);
+            return false;
+        }
+
+        mTex = SDL_CreateTextureFromSurface(renderer, surf);
+        SDL_DestroySurface(surf);
+        if (!mTex) {
+            ERROR("Failed to create texture from surface when reloading " << mPath << ": " << SDL_GetError());
+            return false;
+        }
+
+        // Restore scale mode
+        if (!SDL_SetTextureScaleMode(mTex, SDL_SCALEMODE_NEAREST)) {
+            WARN("Failed to set texture scale mode to NEAREST for '" << mId << "' during reload: " << SDL_GetError());
+        }
+
+        return true;
+    }
+
     SDL_Texture* Texture::getSDLTexture() {
         return mTex;
     }

src/window/window.cpp

@@ -1,6 +1,7 @@
 #include <window/window.hpp>
 
 #include <algorithm>
+#include <renderer/texture.hpp>
 
 namespace Game::Window {
     std::mutex Window::sMutex;
@@ -113,6 +114,45 @@ namespace Game::Window {
                         }
                     });
                 }
+                // Renderer device/targets reset (GPU device removed) - attempt to re-create renderer and reload textures
+                if (event.type == SDL_EVENT_RENDER_DEVICE_RESET || event.type == SDL_EVENT_RENDER_TARGETS_RESET) {
+                    LOG("Renderer device reset event received: attempting to reinitialize renderer and reload textures");
+
+                    // Destroy current renderer and try to re-init
+                    mRenderer.destroy();
+                    bool reinitOk = mRenderer.init(mWindow);
+
+                    // If reinit failed, try forcing the software renderer
+                    if (!reinitOk) {
+                        WARN("Renderer re-init failed, forcing software renderer fallback");
+                        SDL_SetHint(SDL_HINT_RENDER_DRIVER, "software");
+                        reinitOk = mRenderer.init(mWindow);
+                        if (!reinitOk) {
+                            ERROR("Software renderer fallback also failed: " << SDL_GetError());
+                            // Unable to recover; stop running to avoid crashes
+                            mRunning = false;
+                            break;
+                        }
+                    }
+
+                    // Rebuild GPU textures for all entities (fonts and file-based textures)
+                    State::GameState::getInstance().withEntitiesLocked([&](auto& entities) {
+                        for (auto& [name, entity] : entities) {
+                            (void)name;
+                            if (entity) {
+                                auto tex = entity->getTexture();
+                                if (tex) {
+                                    try {
+                                        tex->reload(mRenderer.getSDLRenderer());
+                                    } catch (...) {
+                                        WARN("Exception while reloading texture for entity: " << entity->getName());
+                                    }
+                                }
+                                entity->onWindowResized(mLastWindowWidth, mLastWindowHeight); // ensure layout is correct
+                            }
+                        }
+                    });
+                }
             }
 
             mRenderer.renderFrame();