bootmanager: Don't create another screenshot request if previous one is not done yet

src/video_core/renderer_base.cpp

@@ -26,6 +26,10 @@ void RendererBase::UpdateCurrentFramebufferLayout() {
     render_window.UpdateCurrentFramebufferLayout(layout.width, layout.height);
 }
 
+bool RendererBase::IsScreenshotPending() const {
+    return renderer_settings.screenshot_requested;
+}
+
 void RendererBase::RequestScreenshot(void* data, std::function<void(bool)> callback,
                                      const Layout::FramebufferLayout& layout) {
     if (renderer_settings.screenshot_requested) {

src/video_core/renderer_base.h

@@ -83,6 +83,9 @@ public:
     /// Refreshes the settings common to all renderers
     void RefreshBaseSettings();
 
+    /// Returns true if a screenshot is being processed
+    bool IsScreenshotPending() const;
+
     /// Request a screenshot of the next frame
     void RequestScreenshot(void* data, std::function<void(bool)> callback,
                            const Layout::FramebufferLayout& layout);