Fix MakeCurrent and shader issues with AMD 22.7 driver

src/citra/emu_window/emu_window_sdl2.cpp

@@ -30,7 +30,6 @@ SharedContext_SDL2::SharedContext_SDL2() {
 }
 
 SharedContext_SDL2::~SharedContext_SDL2() {
-    DoneCurrent();
     SDL_GL_DeleteContext(context);
     SDL_DestroyWindow(window);
 }
@@ -185,6 +184,7 @@ EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
 
     window_context = SDL_GL_CreateContext(render_window);
     core_context = CreateSharedContext();
+    last_saved_context = nullptr;
 
     if (window_context == nullptr) {
         LOG_CRITICAL(Frontend, "Failed to create SDL2 GL context: {}", SDL_GetError());
@@ -222,6 +222,14 @@ std::unique_ptr<Frontend::GraphicsContext> EmuWindow_SDL2::CreateSharedContext()
     return std::make_unique<SharedContext_SDL2>();
 }
 
+void EmuWindow_SDL2::SaveContext() {
+    last_saved_context = SDL_GL_GetCurrentContext();
+}
+
+void EmuWindow_SDL2::RestoreContext() {
+    SDL_GL_MakeCurrent(render_window, last_saved_context);
+}
+
 void EmuWindow_SDL2::Present() {
     SDL_GL_MakeCurrent(render_window, window_context);
     SDL_GL_SetSwapInterval(1);

src/citra/emu_window/emu_window_sdl2.h

@@ -49,6 +49,11 @@ public:
     /// Creates a new context that is shared with the current context
     std::unique_ptr<GraphicsContext> CreateSharedContext() const override;
 
+    /// Saves the current context, for the purpose of e.g. creating new shared contexts
+    void SaveContext() override;
+    /// Restores the context previously saved
+    void RestoreContext() override;
+
 private:
     /// Called by PollEvents when a key is pressed or released.
     void OnKeyEvent(int key, u8 state);
@@ -94,6 +99,9 @@ private:
     /// The OpenGL context associated with the window
     SDL_GLContext window_context;
 
+    /// Used by SaveContext and RestoreContext
+    SDL_GLContext last_saved_context;
+
     /// The OpenGL context associated with the core
     std::unique_ptr<Frontend::GraphicsContext> core_context;